{ "instance": { "onegas10-qx6302020.htm": { "axisCustom": 2, "axisStandard": 7, "contextCount": 146, "dts": { "calculationLink": { "local": [ "ogs-20200630_cal.xml" ] }, "definitionLink": { "local": [ "ogs-20200630_def.xml" ], "remote": [ "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-eedm-def-2019-01-31.xml", "http://xbrl.fasb.org/srt/2019/elts/srt-eedm1-def-2019-01-31.xml" ] }, "inline": { "local": [ "onegas10-qx6302020.htm" ] }, "labelLink": { "local": [ "ogs-20200630_lab.xml" ], "remote": [ "https://xbrl.sec.gov/dei/2019/dei-doc-2019-01-31.xml", "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-doc-2019-01-31.xml" ] }, "presentationLink": { "local": [ "ogs-20200630_pre.xml" ] }, "referenceLink": { "remote": [ "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-ref-2019-01-31.xml", "https://xbrl.sec.gov/dei/2019/dei-ref-2019-01-31.xml" ] }, "schema": { "local": [ "ogs-20200630.xsd" ], "remote": [ "http://xbrl.fasb.org/srt/2019/elts/srt-types-2019-01-31.xsd", "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd", "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd", "http://www.xbrl.org/2003/xl-2003-12-31.xsd", "http://www.xbrl.org/2003/xlink-2003-12-31.xsd", "http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd", "http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd", "http://www.xbrl.org/2006/ref-2006-02-27.xsd", "http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd", "http://www.xbrl.org/2005/xbrldt-2005.xsd", "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd", "http://xbrl.fasb.org/us-gaap/2019/elts/us-roles-2019-01-31.xsd", "http://xbrl.fasb.org/srt/2019/elts/srt-roles-2019-01-31.xsd", "https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd", "http://xbrl.fasb.org/us-gaap/2019/elts/us-types-2019-01-31.xsd", "http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd", "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd", "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd", "https://xbrl.sec.gov/currency/2019/currency-2019-01-31.xsd", "https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd", "https://xbrl.sec.gov/exch/2019/exch-2019-01-31.xsd", "http://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd", "http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd", "https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd", "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd", "http://xbrl.fasb.org/us-gaap/2019/elts/us-parts-codification-2019-01-31.xsd", "http://www.xbrl.org/lrr/role/deprecated-2009-12-16.xsd" ] } }, "elementCount": 352, "entityCount": 1, "hidden": { "http://fasb.org/us-gaap/2019-01-31": 25, "http://www.onegas.com/20200630": 2, "http://xbrl.sec.gov/dei/2019-01-31": 5, "total": 32 }, "keyCustom": 35, "keyStandard": 248, "memberCustom": 21, "memberStandard": 13, "nsprefix": "ogs", "nsuri": "http://www.onegas.com/20200630", "report": { "R1": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "dei:Security12bTitle", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "document", "isDefault": "true", "longName": "0001000 - Document - Document And Entity Information", "role": "http://www.onegas.com/role/DocumentAndEntityInformation", "shortName": "Document And Entity Information", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "dei:Security12bTitle", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R10": { "firstAnchor": { "ancestors": [ "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RevenueRecognitionPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2105100 - Disclosure - REVENUE (Notes)", "role": "http://www.onegas.com/role/RevenueNotes", "shortName": "REVENUE (Notes)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RevenueRecognitionPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R11": { "firstAnchor": { "ancestors": [ "span", "div", "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2118100 - Disclosure - REGULATORY ASSETS AND LIABILITIES (Notes)", "role": "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesNotes", "shortName": "REGULATORY ASSETS AND LIABILITIES (Notes)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R12": { "firstAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ShortTermDebtTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2120100 - Disclosure - CREDIT FACILITIES (Notes)", "role": "http://www.onegas.com/role/CreditFacilitiesNotes", "shortName": "CREDIT FACILITIES (Notes)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ShortTermDebtTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R13": { "firstAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LongTermDebtTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2121100 - Disclosure - LONG-TERM DEBT (Notes)", "role": "http://www.onegas.com/role/LongTermDebtNotes", "shortName": "LONG-TERM DEBT (Notes)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LongTermDebtTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R14": { "firstAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LeasesOfLesseeDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2122100 - Disclosure - LEASES (Notes)", "role": "http://www.onegas.com/role/LeasesNotes", "shortName": "LEASES (Notes)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LeasesOfLesseeDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R15": { "firstAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2123100 - Disclosure - EQUITY (Notes)", "role": "http://www.onegas.com/role/EquityNotes", "shortName": "EQUITY (Notes)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R16": { "firstAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ComprehensiveIncomeNoteTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2124100 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Notes)", "role": "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossNotes", "shortName": "ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Notes)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ComprehensiveIncomeNoteTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R17": { "firstAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:EarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2125100 - Disclosure - EARNINGS PER SHARE (Notes)", "role": "http://www.onegas.com/role/EarningsPerShareNotes", "shortName": "EARNINGS PER SHARE (Notes)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:EarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R18": { "firstAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2126100 - Disclosure - EMPLOYEE BENEFIT PLANS (Notes)", "role": "http://www.onegas.com/role/EmployeeBenefitPlansNotes", "shortName": "EMPLOYEE BENEFIT PLANS (Notes)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R19": { "firstAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:IncomeTaxDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2127100 - Disclosure - INCOME TAXES (Notes)", "role": "http://www.onegas.com/role/IncomeTaxesNotes", "shortName": "INCOME TAXES (Notes)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:IncomeTaxDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R2": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2QTD", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:RegulatedOperatingRevenue", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1001000 - Statement - STATEMENTS OF INCOME", "role": "http://www.onegas.com/role/StatementsOfIncome", "shortName": "STATEMENTS OF INCOME", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2QTD", "decimals": "-3", "lang": null, "name": "us-gaap:CostOfGoodsAndServicesSold", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R20": { "firstAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OtherNonoperatingIncomeAndExpenseTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2128100 - Disclosure - OTHER INCOME AND OTHER EXPENSE (Notes)", "role": "http://www.onegas.com/role/OtherIncomeAndOtherExpenseNotes", "shortName": "OTHER INCOME AND OTHER EXPENSE (Notes)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OtherNonoperatingIncomeAndExpenseTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R21": { "firstAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2129100 - Disclosure - COMMITMENTS AND CONTINGENCIES (Notes)", "role": "http://www.onegas.com/role/CommitmentsAndContingenciesNotes", "shortName": "COMMITMENTS AND CONTINGENCIES (Notes)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R22": { "firstAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2130100 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Notes)", "role": "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsNotes", "shortName": "DERIVATIVE FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Notes)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R23": { "firstAnchor": { "ancestors": [ "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicy", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2201201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)", "role": "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesPolicies", "shortName": "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)", "subGroupType": "policies", "uniqueAnchor": { "ancestors": [ "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "lang": "en-US", "name": "us-gaap:UseOfEstimates", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R24": { "firstAnchor": { "ancestors": [ "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DerivativesReportingOfDerivativeActivity", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2230201 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS DERIVATIVE FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Policies)", "role": "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDerivativeFinancialInstrumentsAndFairValueMeasurementsPolicies", "shortName": "DERIVATIVE FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS DERIVATIVE FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Policies)", "subGroupType": "policies", "uniqueAnchor": { "ancestors": [ "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DerivativesReportingOfDerivativeActivity", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R25": { "firstAnchor": { "ancestors": [ "us-gaap:RevenueRecognitionPolicyTextBlock", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2305301 - Disclosure - REVENUE (Tables)", "role": "http://www.onegas.com/role/RevenueTables", "shortName": "REVENUE (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:RevenueRecognitionPolicyTextBlock", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R26": { "firstAnchor": { "ancestors": [ "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "ogs:SCHEDULEOFREGULATEDASSETSANDLIABILITIESTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2318301 - Disclosure - REGULATORY ASSETS AND LIABILITIES (Tables)", "role": "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesTables", "shortName": "REGULATORY ASSETS AND LIABILITIES (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "ogs:SCHEDULEOFREGULATEDASSETSANDLIABILITIESTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R27": { "firstAnchor": { "ancestors": [ "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2324301 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)", "role": "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossTables", "shortName": "ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R28": { "firstAnchor": { "ancestors": [ "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2325301 - Disclosure - EARNINGS PER SHARE (Tables)", "role": "http://www.onegas.com/role/EarningsPerShareTables", "shortName": "EARNINGS PER SHARE (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R29": { "firstAnchor": { "ancestors": [ "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfNetBenefitCostsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2326301 - Disclosure - EMPLOYEE BENEFIT PLANS (Tables)", "role": "http://www.onegas.com/role/EmployeeBenefitPlansTables", "shortName": "EMPLOYEE BENEFIT PLANS (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfNetBenefitCostsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R3": { "firstAnchor": null, "groupType": "statement", "isDefault": "false", "longName": "1003001 - Statement - STATEMENTS OF COMPREHENSIVE INCOME STATEMENTS OF COMPREHENSIVE INCOME Parenthetical", "role": "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncomeParenthetical", "shortName": "STATEMENTS OF COMPREHENSIVE INCOME STATEMENTS OF COMPREHENSIVE INCOME Parenthetical", "subGroupType": "parenthetical", "uniqueAnchor": null }, "R30": { "firstAnchor": { "ancestors": [ "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2328301 - Disclosure - OTHER INCOME AND OTHER EXPENSE (Tables)", "role": "http://www.onegas.com/role/OtherIncomeAndOtherExpenseTables", "shortName": "OTHER INCOME AND OTHER EXPENSE (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R31": { "firstAnchor": { "ancestors": [ "span", "span", "span", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentPeriodEndDate", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2401402 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)", "role": "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesDetails", "shortName": "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": "-5", "lang": null, "name": "us-gaap:CapitalExpendituresIncurredButNotYetPaid", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R32": { "firstAnchor": { "ancestors": [ "span", "span", "div", "us-gaap:RevenueRecognitionPolicyTextBlock", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2020Q2", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:UnbilledReceivablesCurrent", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2405402 - Disclosure - REVENUE (Details)", "role": "http://www.onegas.com/role/RevenueDetails", "shortName": "REVENUE (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "us-gaap:RevenueRecognitionPolicyTextBlock", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2019Q4", "decimals": "-5", "lang": null, "name": "us-gaap:UnbilledReceivablesCurrent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R33": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2020Q2", "decimals": "-5", "first": true, "lang": null, "name": "ogs:KansasGasServicetaxreformregulatoryliability", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2418402 - Disclosure - REGULATORY ASSETS AND LIABILITIES (Details)", "role": "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails", "shortName": "REGULATORY ASSETS AND LIABILITIES (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": "2", "lang": null, "name": "us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R34": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2020Q2", "decimals": "-6", "first": true, "lang": null, "name": "ogs:LineofCreditFacilitySublimit", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2420401 - Disclosure - CREDIT FACILITIES (Details)", "role": "http://www.onegas.com/role/CreditFacilitiesDetails", "shortName": "CREDIT FACILITIES (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2019Q3", "decimals": "-6", "lang": null, "name": "ogs:Commercialpapermaximumborrowingcapacity", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R35": { "firstAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2020Q2_us-gaap_LongtermDebtTypeAxis_ogs_NotePayableDue2024Member", "decimals": "-6", "first": true, "lang": null, "name": "us-gaap:DebtInstrumentCarryingAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2421401 - Disclosure - LONG-TERM DEBT (Details)", "role": "http://www.onegas.com/role/LongTermDebtDetails", "shortName": "LONG-TERM DEBT (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2020Q2_us-gaap_LongtermDebtTypeAxis_ogs_NotePayableDue2024Member", "decimals": "-6", "first": true, "lang": null, "name": "us-gaap:DebtInstrumentCarryingAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R36": { "firstAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q1QTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422401 - Disclosure - LEASES (Details)", "role": "http://www.onegas.com/role/LeasesDetails", "shortName": "LEASES (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q1QTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R37": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2020Q2", "decimals": "-6", "first": true, "lang": null, "name": "ogs:AttheMarketEquityProgramAggregateOfferingPriceLimit", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2423401 - Disclosure - EQUITY (Details)", "role": "http://www.onegas.com/role/EquityDetails", "shortName": "EQUITY (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2020Q2", "decimals": "-6", "first": true, "lang": null, "name": "ogs:AttheMarketEquityProgramAggregateOfferingPriceLimit", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R38": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2QTD", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2424402 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details)", "role": "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossDetails", "shortName": "ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2QTD", "decimals": "-3", "lang": null, "name": "ogs:Othercomprehensiveincomelossreclassificationadjustmentbeforetaxandregulatoryadjustments", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R39": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2QTD", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2425402 - Disclosure - EARNINGS PER SHARE (Details)", "role": "http://www.onegas.com/role/EarningsPerShareDetails", "shortName": "EARNINGS PER SHARE (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2QTD", "decimals": "-3", "lang": null, "name": "us-gaap:DilutiveSecurities", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R4": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2QTD", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1003500 - Statement - STATEMENTS OF COMPREHENSIVE INCOME STATEMENTS OF COMPREHENSIVE INCOME", "role": "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncome", "shortName": "STATEMENTS OF COMPREHENSIVE INCOME STATEMENTS OF COMPREHENSIVE INCOME", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2QTD", "decimals": "-3", "lang": null, "name": "us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R40": { "firstAnchor": { "ancestors": [ "span", "span", "span", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentPeriodEndDate", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2426402 - Disclosure - EMPLOYEE BENEFIT PLANS (Details)", "role": "http://www.onegas.com/role/EmployeeBenefitPlansDetails", "shortName": "EMPLOYEE BENEFIT PLANS (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2019Q4", "decimals": "-5", "lang": null, "name": "ogs:Capitalizednonservicecostcomponentsasaregulatoryasset", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R41": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2020Q2", "decimals": "-5", "first": true, "lang": null, "name": "ogs:KansasGasServicetaxreformregulatoryliability", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2427401 - Disclosure - INCOME TAXES INCOME TAXES (Details)", "role": "http://www.onegas.com/role/IncomeTaxesIncomeTaxesDetails", "shortName": "INCOME TAXES INCOME TAXES (Details)", "subGroupType": "details", "uniqueAnchor": null }, "R42": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2QTD", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:OtherNonoperatingIncomeExpense", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2428402 - Disclosure - OTHER INCOME AND OTHER EXPENSE (Details)", "role": "http://www.onegas.com/role/OtherIncomeAndOtherExpenseDetails", "shortName": "OTHER INCOME AND OTHER EXPENSE (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2QTD_ogs_OTHERINCOMEANDOTHEREXPENSEAxis_ogs_NetperiodiccostotherthanservicecostMember", "decimals": "-3", "lang": null, "name": "us-gaap:OtherNonoperatingIncomeExpense", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R43": { "firstAnchor": { "ancestors": [ "span", "span", "span", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentPeriodEndDate", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2429401 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details)", "role": "http://www.onegas.com/role/CommitmentsAndContingenciesDetails", "shortName": "COMMITMENTS AND CONTINGENCIES (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2017Q4", "decimals": "0", "lang": null, "name": "ogs:NumberOfFormerManufacturedGasSitesWhereWeOwnOrRetainLegalResponsibilityForEnvironmentalConditions", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R44": { "firstAnchor": { "ancestors": [ "span", "span", "span", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentPeriodEndDate", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2430402 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Details)", "role": "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails", "shortName": "DERIVATIVE FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2019Q4", "decimals": "0", "lang": null, "name": "us-gaap:DerivativeNonmonetaryNotionalAmount", "reportCount": 1, "unique": true, "unitRef": "mmcf", "xsiNil": "false" } }, "R5": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2020Q2", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:PublicUtilitiesPropertyPlantAndEquipmentPlantInService", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1004000 - Statement - BALANCE SHEETS", "role": "http://www.onegas.com/role/BalanceSheets", "shortName": "BALANCE SHEETS", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2020Q2", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:PublicUtilitiesPropertyPlantAndEquipmentPlantInService", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R6": { "firstAnchor": null, "groupType": "statement", "isDefault": "false", "longName": "1004001 - Statement - BALANCE SHEETS BALANCE SHEETS Parenthetical", "role": "http://www.onegas.com/role/BalanceSheetsBalanceSheetsParenthetical", "shortName": "BALANCE SHEETS BALANCE SHEETS Parenthetical", "subGroupType": "parenthetical", "uniqueAnchor": null }, "R7": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1005000 - Statement - STATEMENTS OF CASH FLOWS", "role": "http://www.onegas.com/role/StatementsOfCashFlows", "shortName": "STATEMENTS OF CASH FLOWS", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": "-3", "lang": null, "name": "us-gaap:DeferredIncomeTaxExpenseBenefit", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R8": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FI2018Q4_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:CommonStockSharesIssued", "reportCount": 1, "unitRef": "shares", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1006000 - Statement - STATEMENT OF CHANGES IN EQUITY", "role": "http://www.onegas.com/role/StatementOfChangesInEquity", "shortName": "STATEMENT OF CHANGES IN EQUITY", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2019Q1QTD_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember", "decimals": "-3", "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R9": { "firstAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SignificantAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2101100 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Notes)", "role": "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesNotes", "shortName": "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Notes)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "onegas10-qx6302020.htm", "contextRef": "FD2020Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SignificantAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } } }, "segmentCount": 34, "tag": { "dei_AmendmentFlag": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.", "label": "Amendment Flag", "terseLabel": "Amendment Flag" } } }, "localname": "AmendmentFlag", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_CityAreaCode": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Area code of city", "label": "City Area Code", "terseLabel": "City Area Code" } } }, "localname": "CityAreaCode", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_CurrentFiscalYearEndDate": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "End date of current fiscal year in the format --MM-DD.", "label": "Current Fiscal Year End Date", "terseLabel": "Current Fiscal Year End Date" } } }, "localname": "CurrentFiscalYearEndDate", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "gMonthDayItemType" }, "dei_DocumentDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Type of the document as assigned by the filer, corresponding to SEC document naming convention standards.", "label": "Document [Domain]", "terseLabel": "Document [Domain]" } } }, "localname": "DocumentDomain", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "domainItemType" }, "dei_DocumentFiscalPeriodFocus": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Fiscal period values are FY, Q1, Q2, and Q3. 1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY.", "label": "Document Fiscal Period Focus", "terseLabel": "Document Fiscal Period Focus" } } }, "localname": "DocumentFiscalPeriodFocus", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "fiscalPeriodItemType" }, "dei_DocumentFiscalYearFocus": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.", "label": "Document Fiscal Year Focus", "terseLabel": "Document Fiscal Year Focus" } } }, "localname": "DocumentFiscalYearFocus", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/DocumentAndEntityInformation", "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "gYearItemType" }, "dei_DocumentInformationDocumentAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table.", "label": "Document Information, Document [Axis]", "terseLabel": "Document Information, Document [Axis]" } } }, "localname": "DocumentInformationDocumentAxis", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "stringItemType" }, "dei_DocumentInformationLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Document Information [Line Items]", "terseLabel": "Document Information [Line Items]" } } }, "localname": "DocumentInformationLineItems", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "stringItemType" }, "dei_DocumentInformationTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Container to support the formal attachment of each official or unofficial, public or private document as part of a submission package.", "label": "Document Information [Table]", "terseLabel": "Document Information [Table]" } } }, "localname": "DocumentInformationTable", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "stringItemType" }, "dei_DocumentPeriodEndDate": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.", "label": "Document Period End Date", "terseLabel": "Document Period End Date" } } }, "localname": "DocumentPeriodEndDate", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/CommitmentsAndContingenciesDetails", "http://www.onegas.com/role/CreditFacilitiesDetails", "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails", "http://www.onegas.com/role/DocumentAndEntityInformation", "http://www.onegas.com/role/EmployeeBenefitPlansDetails", "http://www.onegas.com/role/StatementOfChangesInEquity", "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "dateItemType" }, "dei_DocumentQuarterlyReport": { "auth_ref": [ "r239" ], "lang": { "en-US": { "role": { "documentation": "Boolean flag that is true only for a form used as an quarterly report.", "label": "Document Quarterly Report", "terseLabel": "Document Quarterly Report" } } }, "localname": "DocumentQuarterlyReport", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_DocumentTransitionReport": { "auth_ref": [ "r240" ], "lang": { "en-US": { "role": { "documentation": "Boolean flag that is true only for a form used as a transition report.", "label": "Document Transition Report", "terseLabel": "Document Transition Report" } } }, "localname": "DocumentTransitionReport", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_DocumentType": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.", "label": "Document Type", "terseLabel": "Document Type" } } }, "localname": "DocumentType", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "submissionTypeItemType" }, "dei_EntityAddressAddressLine1": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Address Line 1 such as Attn, Building Name, Street Name", "label": "Entity Address, Address Line One", "terseLabel": "Entity Address, Address Line One" } } }, "localname": "EntityAddressAddressLine1", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressCityOrTown": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Name of the City or Town", "label": "Entity Address, City or Town", "terseLabel": "Entity Address, City or Town" } } }, "localname": "EntityAddressCityOrTown", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressPostalZipCode": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Code for the postal or zip code", "label": "Entity Address, Postal Zip Code", "terseLabel": "Entity Address, Postal Zip Code" } } }, "localname": "EntityAddressPostalZipCode", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressStateOrProvince": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Name of the state or province.", "label": "Entity Address, State or Province", "terseLabel": "Entity Address, State or Province" } } }, "localname": "EntityAddressStateOrProvince", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "stateOrProvinceItemType" }, "dei_EntityCentralIndexKey": { "auth_ref": [ "r241" ], "lang": { "en-US": { "role": { "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.", "label": "Entity Central Index Key", "terseLabel": "Entity Central Index Key" } } }, "localname": "EntityCentralIndexKey", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "centralIndexKeyItemType" }, "dei_EntityCommonStockSharesOutstanding": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.", "label": "Entity Common Stock, Shares Outstanding", "terseLabel": "Entity Common Stock, Shares Outstanding" } } }, "localname": "EntityCommonStockSharesOutstanding", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "sharesItemType" }, "dei_EntityCurrentReportingStatus": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure.", "label": "Entity Current Reporting Status", "terseLabel": "Entity Current Reporting Status" } } }, "localname": "EntityCurrentReportingStatus", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "yesNoItemType" }, "dei_EntityEmergingGrowthCompany": { "auth_ref": [ "r241" ], "lang": { "en-US": { "role": { "documentation": "Indicate if registrant meets the emerging growth company criteria.", "label": "Entity Emerging Growth Company", "terseLabel": "Entity Emerging Growth Company" } } }, "localname": "EntityEmergingGrowthCompany", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_EntityFileNumber": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.", "label": "Entity File Number", "terseLabel": "Entity File Number" } } }, "localname": "EntityFileNumber", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "fileNumberItemType" }, "dei_EntityFilerCategory": { "auth_ref": [ "r241" ], "lang": { "en-US": { "role": { "documentation": "Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.", "label": "Entity Filer Category", "terseLabel": "Entity Filer Category" } } }, "localname": "EntityFilerCategory", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "filerCategoryItemType" }, "dei_EntityIncorporationStateCountryCode": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Two-character EDGAR code representing the state or country of incorporation.", "label": "Entity Incorporation, State or Country Code", "terseLabel": "Entity Incorporation, State or Country Code" } } }, "localname": "EntityIncorporationStateCountryCode", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "edgarStateCountryItemType" }, "dei_EntityInteractiveDataCurrent": { "auth_ref": [ "r242" ], "lang": { "en-US": { "role": { "documentation": "Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).", "label": "Entity Interactive Data Current", "terseLabel": "Entity Interactive Data Current" } } }, "localname": "EntityInteractiveDataCurrent", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "yesNoItemType" }, "dei_EntityRegistrantName": { "auth_ref": [ "r241" ], "lang": { "en-US": { "role": { "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.", "label": "Entity Registrant Name", "terseLabel": "Entity Registrant Name" } } }, "localname": "EntityRegistrantName", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityShellCompany": { "auth_ref": [ "r241" ], "lang": { "en-US": { "role": { "documentation": "Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act.", "label": "Entity Shell Company", "terseLabel": "Entity Shell Company" } } }, "localname": "EntityShellCompany", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_EntitySmallBusiness": { "auth_ref": [ "r241" ], "lang": { "en-US": { "role": { "documentation": "Indicates that the company is a Smaller Reporting Company (SRC).", "label": "Entity Small Business", "terseLabel": "Entity Small Business" } } }, "localname": "EntitySmallBusiness", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_EntityTaxIdentificationNumber": { "auth_ref": [ "r241" ], "lang": { "en-US": { "role": { "documentation": "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.", "label": "Entity Tax Identification Number", "terseLabel": "Entity Tax Identification Number" } } }, "localname": "EntityTaxIdentificationNumber", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "employerIdItemType" }, "dei_LocalPhoneNumber": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Local phone number for entity.", "label": "Local Phone Number", "terseLabel": "Local Phone Number" } } }, "localname": "LocalPhoneNumber", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_Security12bTitle": { "auth_ref": [ "r237" ], "lang": { "en-US": { "role": { "documentation": "Title of a 12(b) registered security.", "label": "Title of 12(b) Security", "terseLabel": "Title of 12(b) Security" } } }, "localname": "Security12bTitle", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "securityTitleItemType" }, "dei_SecurityExchangeName": { "auth_ref": [ "r238" ], "lang": { "en-US": { "role": { "documentation": "Name of the Exchange on which a security is registered.", "label": "Security Exchange Name", "terseLabel": "Security Exchange Name" } } }, "localname": "SecurityExchangeName", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "edgarExchangeCodeItemType" }, "dei_TradingSymbol": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Trading symbol of an instrument as listed on an exchange.", "label": "Trading Symbol", "terseLabel": "Trading Symbol" } } }, "localname": "TradingSymbol", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.onegas.com/role/DocumentAndEntityInformation" ], "xbrltype": "tradingSymbolItemType" }, "ogs_AAOassociatedwithMGPcostsrequestedamountcap": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "AAO associated with MGP costs incurred requested amount, cap", "label": "AAO associated with MGP costs requested amount, cap", "terseLabel": "AAO associated with MGP costs requested amount, cap" } } }, "localname": "AAOassociatedwithMGPcostsrequestedamountcap", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/CommitmentsAndContingenciesDetails" ], "xbrltype": "monetaryItemType" }, "ogs_AdvaloremtaxMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Ad valorem tax represents an increase in Kansas Gas Service\u2019s taxes above the amount approved in a rate case. Kansas law permits a utility to file a tariff to recover additional ad valorem tax expense incurred above the amount currently recovered in the cost of service rate. This excess amount is recoverable through a surcharge and can be recovered, provided the utility reports the change in rates to the KCC, on an annual basis.", "label": "Ad valorem tax [Member]", "terseLabel": "Ad valorem tax [Member]" } } }, "localname": "AdvaloremtaxMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "ogs_AttheMarketEquityProgramAggregateOfferingPriceLimit": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "At-the-Market Equity Program, Aggregate Offering Price Limit", "label": "At-the-Market Equity Program, Aggregate Offering Price Limit", "terseLabel": "At-the-Market Equity Program, Aggregate Offering Price Limit" } } }, "localname": "AttheMarketEquityProgramAggregateOfferingPriceLimit", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/EquityDetails" ], "xbrltype": "monetaryItemType" }, "ogs_AttheMarketEquityProgramEquityAvailableforIssuance": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "At-the-Market Equity Program, Equity Available for Issuance", "label": "At-the-Market Equity Program, Equity Available for Issuance", "terseLabel": "At-the-Market Equity Program, Equity Available for Issuance" } } }, "localname": "AttheMarketEquityProgramEquityAvailableforIssuance", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/EquityDetails" ], "xbrltype": "monetaryItemType" }, "ogs_AttheMarketEquityProgramSharesIssued": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "At-the-Market Equity Program, Shares Issued", "label": "At-the-Market Equity Program, Shares Issued", "terseLabel": "At-the-Market Equity Program, Shares Issued" } } }, "localname": "AttheMarketEquityProgramSharesIssued", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/EquityDetails" ], "xbrltype": "monetaryItemType" }, "ogs_Capitalizednonservicecostcomponentsasaregulatoryasset": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Capitalized non-service cost components as a regulatory asset", "label": "Capitalized non-service cost components as a regulatory asset", "terseLabel": "Capitalized non-service cost components as a regulatory asset" } } }, "localname": "Capitalizednonservicecostcomponentsasaregulatoryasset", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/EmployeeBenefitPlansDetails" ], "xbrltype": "monetaryItemType" }, "ogs_Commercialpapermaximumborrowingcapacity": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Maximum borrowing capacity under the commercial paper program.", "label": "Commercial paper maximum borrowing capacity", "terseLabel": "Commercial paper maximum borrowing capacity" } } }, "localname": "Commercialpapermaximumborrowingcapacity", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails" ], "xbrltype": "monetaryItemType" }, "ogs_CommitmentsandContingenciesLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "[Line Items] for Disclosure of commitments and contingencies [Table]", "label": "Commitments and Contingencies [Line Items]", "terseLabel": "Commitments and Contingencies [Line Items]" } } }, "localname": "CommitmentsandContingenciesLineItems", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/CommitmentsAndContingenciesDetails", "http://www.onegas.com/role/CommitmentsAndContingenciesNotes" ], "xbrltype": "stringItemType" }, "ogs_CommitmentsandContingenciesTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of commitments and contingencies [Table]", "label": "Commitments and Contingencies [Table]", "terseLabel": "Commitments and Contingencies [Table]" } } }, "localname": "CommitmentsandContingenciesTable", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/CommitmentsAndContingenciesDetails", "http://www.onegas.com/role/CommitmentsAndContingenciesNotes" ], "xbrltype": "stringItemType" }, "ogs_CommonStockDividendsDeclaredAnnualizedBasis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Dividends declared during the period for each share of common stock outstanding, on an annualized basis.", "label": "Common Stock, Dividends, Declared, Annualized Basis", "terseLabel": "Common Stock, Dividends, Declared, Annualized Basis" } } }, "localname": "CommonStockDividendsDeclaredAnnualizedBasis", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/EquityDetails" ], "xbrltype": "perShareItemType" }, "ogs_Corporatebondsinotherassets": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Corporate bonds in other current and noncurrent assets", "label": "Corporate bonds in other assets", "terseLabel": "Corporate bonds in other assets" } } }, "localname": "Corporatebondsinotherassets", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "ogs_DERIVATIVEFINANCIALINSTRUMENTSANDFAIRVALUEMEASUREMENTSAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "DERIVATIVE FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS [Abstract]", "label": "DERIVATIVE FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS [Abstract]" } } }, "localname": "DERIVATIVEFINANCIALINSTRUMENTSANDFAIRVALUEMEASUREMENTSAbstract", "nsuri": "http://www.onegas.com/20200630", "xbrltype": "stringItemType" }, "ogs_DocumentAndEntityInformationAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "4eba46a2-97a9-0056-c25c-d1cfa3a911f6", "label": "Document and Entity Information [Abstract]" } } }, "localname": "DocumentAndEntityInformationAbstract", "nsuri": "http://www.onegas.com/20200630", "xbrltype": "stringItemType" }, "ogs_EARNINGSPERSHAREOFCOMMONSTOCKBASICANDDILUTEDLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "[Line Items] for Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.", "label": "EARNINGS PER SHARE OF COMMON STOCK, BASIC AND DILUTED [Line Items]", "terseLabel": "EARNINGS PER SHARE [Line Items]" } } }, "localname": "EARNINGSPERSHAREOFCOMMONSTOCKBASICANDDILUTEDLineItems", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/EarningsPerShareDetails", "http://www.onegas.com/role/EarningsPerShareNotes", "http://www.onegas.com/role/EarningsPerShareTables" ], "xbrltype": "stringItemType" }, "ogs_EARNINGSPERSHAREOFCOMMONSTOCKBASICANDDILUTEDTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.", "label": "EARNINGS PER SHARE OF COMMON STOCK, BASIC AND DILUTED [Table]", "terseLabel": "EARNINGS PER SHARE [Table]" } } }, "localname": "EARNINGSPERSHAREOFCOMMONSTOCKBASICANDDILUTEDTable", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/EarningsPerShareDetails", "http://www.onegas.com/role/EarningsPerShareNotes", "http://www.onegas.com/role/EarningsPerShareTables" ], "xbrltype": "stringItemType" }, "ogs_EarningslossesoninvestmentsassociatedwithnonqualifiedemployeebenefitplansMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Earnings (losses) on investments associated with nonqualified employee benefit plans [Member]", "label": "Earnings (losses) on investments associated with nonqualified employee benefit plans [Member]", "terseLabel": "Earnings (losses) on investments associated with nonqualified employee benefit plans [Member]" } } }, "localname": "EarningslossesoninvestmentsassociatedwithnonqualifiedemployeebenefitplansMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/OtherIncomeAndOtherExpenseDetails" ], "xbrltype": "domainItemType" }, "ogs_EarningsonInvestmentsAssociatedwithNonqualifiedEmployeeBenefitPlans": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Earnings on Investments Associated with Nonqualified Employee Benefit Plans", "label": "Earnings on Investments Associated with Nonqualified Employee Benefit Plans", "terseLabel": "Earnings on Investments Associated with Nonqualified Employee Benefit Plans" } } }, "localname": "EarningsonInvestmentsAssociatedwithNonqualifiedEmployeeBenefitPlans", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/OtherIncomeAndOtherExpenseDetails" ], "xbrltype": "monetaryItemType" }, "ogs_EnvironmentalReserveEstimateRangeHigh": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Potential costs associated with environmental remediation, high-end range.", "label": "Environmental Reserve Estimate Range, High", "terseLabel": "Environmental Reserve Estimate Range, High" } } }, "localname": "EnvironmentalReserveEstimateRangeHigh", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/CommitmentsAndContingenciesDetails" ], "xbrltype": "monetaryItemType" }, "ogs_EnvironmentalReserveEstimateRangeLow": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Potential costs associated with environmental remediation, low-end range.", "label": "Environmental Reserve Estimate Range, Low", "terseLabel": "Environmental Reserve Estimate Range, Low" } } }, "localname": "EnvironmentalReserveEstimateRangeLow", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/CommitmentsAndContingenciesDetails" ], "xbrltype": "monetaryItemType" }, "ogs_FairValueAssetsTransfersbetweenLevels": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of transfers of assets measured on a recurring basis between levels of the fair value hierarchy.", "label": "Fair Value Assets, Transfers between Levels", "terseLabel": "Fair Value Assets, Transfers between Levels" } } }, "localname": "FairValueAssetsTransfersbetweenLevels", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "ogs_Fairvaluenaturalgascalloptions": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The fair value of purchased natural gas call options held.", "label": "Fair value, natural gas call options", "terseLabel": "Fair value, natural gas call options" } } }, "localname": "Fairvaluenaturalgascalloptions", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "ogs_IncometaxratechangesMemberDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Income tax rate changes [Member] [Domain]", "label": "Income tax rate changes [Member] [Domain]", "terseLabel": "Income tax rate changes [Member] [Domain]" } } }, "localname": "IncometaxratechangesMemberDomain", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "ogs_InvestmentsAndOtherAssetsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "e5171b7a-202d-b2ed-e1e6-d1c8d50b4c9b", "label": "Investments and other assets [Abstract]", "verboseLabel": "Goodwill and other assets" } } }, "localname": "InvestmentsAndOtherAssetsAbstract", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "stringItemType" }, "ogs_KansasGasServicetaxreformregulatoryliability": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Kansas Gas Service tax reform regulatory liability", "label": "Kansas Gas Service tax reform regulatory liability", "terseLabel": "Kansas Gas Service tax reform regulatory liability" } } }, "localname": "KansasGasServicetaxreformregulatoryliability", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/IncomeTaxesIncomeTaxesDetails", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "ogs_LineofCreditFacilityOptiontoIncreaseBorrowingCapacity": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "This item represents the total amount the facility my increase to.", "label": "Line of Credit Facility Option to Increase Borrowing Capacity", "terseLabel": "Line of Credit Facility Option to Increase Borrowing Capacity" } } }, "localname": "LineofCreditFacilityOptiontoIncreaseBorrowingCapacity", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails" ], "xbrltype": "monetaryItemType" }, "ogs_LineofCreditFacilitySublimit": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "This item represents the amount of sublimit for the issuance of standby letters of credit.", "label": "Line of Credit Facility Sublimit", "terseLabel": "Line of Credit Facility Sublimit" } } }, "localname": "LineofCreditFacilitySublimit", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails" ], "xbrltype": "monetaryItemType" }, "ogs_MGPCostsMemberMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Estimate of manufactured gas plant (MGP) costs expected to be incurred that have been recorded as a regulatory asset.", "label": "MGP Costs [Member] [Member]", "terseLabel": "MGP Costs [Member] [Member]" } } }, "localname": "MGPCostsMemberMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "ogs_MiscellaneousrevenuesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Miscellaneous revenues from contracts with customers represent implied contracts established by our tariff rates approved by the regulatory authorities and includes one-time miscellaneous service charges with the performance obligation satisfied at a point in time when services are rendered to the customer.", "label": "Miscellaneous revenues [Member]", "terseLabel": "Miscellaneous revenues [Member]" } } }, "localname": "MiscellaneousrevenuesMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RevenueDetails" ], "xbrltype": "domainItemType" }, "ogs_NaturalgassalestocustomersMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Natural gas sales to customers represent revenue from contracts with customers through implied contracts established by our tariff rates approved by the regulatory authorities and includes residential, commercial, industrial, wholesale and public authority customers. For natural gas sales, the customer receives the benefits of our performance when the commodity is received and simultaneously consumed by the customer. The performance obligation is satisfied over time as the customer consumes the natural gas.", "label": "Natural gas sales to customers [Member]", "terseLabel": "Natural gas sales to customers [Member]" } } }, "localname": "NaturalgassalestocustomersMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RevenueDetails" ], "xbrltype": "domainItemType" }, "ogs_NetperiodiccostotherthanservicecostMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Net periodic cost other than service cost [Member]", "label": "Net periodic cost other than service cost [Member]", "terseLabel": "Net periodic cost other than service cost [Member]" } } }, "localname": "NetperiodiccostotherthanservicecostMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/OtherIncomeAndOtherExpenseDetails" ], "xbrltype": "domainItemType" }, "ogs_Netregulatoryassetsandliabilitiescurrent": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The net amount of all current regulatory assets less all current regulatory liabilities as of the end of the period.", "label": "Net regulatory assets and liabilities, current", "terseLabel": "Net regulatory assets (liabilities), current" } } }, "localname": "Netregulatoryassetsandliabilitiescurrent", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "ogs_Netregulatoryassetsandliabilitiesnoncurrent": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The net amount of noncurrent regulatory assets less all noncurrent regulatory liabilities as of the end of the period.", "label": "Net regulatory assets and liabilities, noncurrent", "terseLabel": "Net regulatory assets (liabilities), noncurrent" } } }, "localname": "Netregulatoryassetsandliabilitiesnoncurrent", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "ogs_NotePayableDue2024Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Note Payable Due 2024 [Member]", "label": "Note Payable Due 2024 [Member]", "terseLabel": "Note Payable Due 2024 [Member]" } } }, "localname": "NotePayableDue2024Member", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "ogs_NotePayableDue2030MemberDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Note Payable Due 2030 [Member]", "label": "Note Payable Due 2030 [Member] [Domain]", "terseLabel": "Note Payable Due 2030 [Member] [Domain]" } } }, "localname": "NotePayableDue2030MemberDomain", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "ogs_NotePayableDue2048Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Note Payable Due 2048", "label": "Note Payable Due 2048 [Member]", "terseLabel": "Note Payable Due 2048 [Member]" } } }, "localname": "NotePayableDue2048Member", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "ogs_NotesPayableDue2044Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A written promise to pay a note.", "label": "Notes Payable Due 2044 [Member]", "terseLabel": "Notes Payable Due 2044 [Member]" } } }, "localname": "NotesPayableDue2044Member", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "ogs_NumberOfFormerManufacturedGasSitesWhereWeOwnOrRetainLegalResponsibilityForEnvironmentalConditions": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of former manufactured gas sites where we own or retain legal responsibility.", "label": "Number Of Former Manufactured Gas Sites Where We Own Or Retain Legal Responsibility For Environmental Conditions", "terseLabel": "Number Of Former Manufactured Gas Sites Where We Own Or Retain Legal Responsibility For Environmental Conditions" } } }, "localname": "NumberOfFormerManufacturedGasSitesWhereWeOwnOrRetainLegalResponsibilityForEnvironmentalConditions", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/CommitmentsAndContingenciesDetails" ], "xbrltype": "integerItemType" }, "ogs_NumberOfNaturalGasDistributionServicesCustomers": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of customers the natural gas distribution service segment services.", "label": "Number of natural gas distribution services customers", "terseLabel": "Number of natural gas distribution services customers" } } }, "localname": "NumberOfNaturalGasDistributionServicesCustomers", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "integerItemType" }, "ogs_NumberOfSitesWhereRegulatoryClosureHasBeenAchieved": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of sites where regulatory closure has been achieved", "label": "Number of sites where regulatory closure has been achieved", "terseLabel": "Number of sites where regulatory closure has been achieved" } } }, "localname": "NumberOfSitesWhereRegulatoryClosureHasBeenAchieved", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/CommitmentsAndContingenciesDetails" ], "xbrltype": "integerItemType" }, "ogs_Numberofsiteswithongoinggroundwatermonitoring": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of sites where groundwater continues to be monitored in accordance to plans approved by the KDHE.", "label": "Number of sites with ongoing groundwater monitoring", "terseLabel": "Number of sites with ongoing groundwater monitoring" } } }, "localname": "Numberofsiteswithongoinggroundwatermonitoring", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/CommitmentsAndContingenciesDetails" ], "xbrltype": "integerItemType" }, "ogs_OTHERINCOMEANDOTHEREXPENSEAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Detail of other income and other expense.", "label": "OTHER INCOME AND OTHER EXPENSE [Axis]", "terseLabel": "OTHER INCOME AND OTHER EXPENSE [Axis]" } } }, "localname": "OTHERINCOMEANDOTHEREXPENSEAxis", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/OtherIncomeAndOtherExpenseDetails" ], "xbrltype": "stringItemType" }, "ogs_OTHERINCOMEANDOTHEREXPENSEDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "[Domain] for Detail of other income and other expense.", "label": "OTHER INCOME AND OTHER EXPENSE [Domain]", "terseLabel": "OTHER INCOME AND OTHER EXPENSE [Domain]" } } }, "localname": "OTHERINCOMEANDOTHEREXPENSEDomain", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/OtherIncomeAndOtherExpenseDetails" ], "xbrltype": "domainItemType" }, "ogs_OperatingLeaseLiabilityIncurred": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Operating Lease Liability Incurred", "label": "Operating Lease Liability Incurred", "terseLabel": "Operating Lease Liability Incurred" } } }, "localname": "OperatingLeaseLiabilityIncurred", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/LeasesDetails" ], "xbrltype": "monetaryItemType" }, "ogs_OthercomprehensiveincomelossreclassificationRegulatoryadjustments": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Other comprehensive income (loss) reclassification - Regulatory adjustments represent pension and other postretirement benefit costs expected to be recovered through rates and are deferred as part of our regulatory assets.", "label": "Other comprehensive income (loss) reclassification - Regulatory adjustments", "terseLabel": "Regulatory adjustments" } } }, "localname": "OthercomprehensiveincomelossreclassificationRegulatoryadjustments", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "monetaryItemType" }, "ogs_Othercomprehensiveincomelossreclassificationadjustmentbeforetaxandregulatoryadjustments": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Other comprehensive income (loss) reclassification adjustment, before tax and regulatory adjustments", "label": "Other comprehensive income (loss) reclassification adjustment, before tax and regulatory adjustments", "terseLabel": "Reclassification adjustment, before tax and regulatory adjustments" } } }, "localname": "Othercomprehensiveincomelossreclassificationadjustmentbeforetaxandregulatoryadjustments", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "monetaryItemType" }, "ogs_OthernetMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Other Income and Expense, net", "label": "Other, net [Member]", "terseLabel": "Other, net [Member]" } } }, "localname": "OthernetMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/OtherIncomeAndOtherExpenseDetails" ], "xbrltype": "domainItemType" }, "ogs_OtherregulatoryassetsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Represents other regulatory assets.", "label": "Other regulatory assets [Member]", "terseLabel": "Other regulatory assets [Member]" } } }, "localname": "OtherregulatoryassetsMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "ogs_OtherrevenuesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Other revenues [Member]", "label": "Other revenues [Member]", "terseLabel": "Other revenues [Member]" } } }, "localname": "OtherrevenuesMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RevenueDetails" ], "xbrltype": "domainItemType" }, "ogs_Otherrevenuesnaturalgassalesrelated": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Miscellaneous revenues from contracts with customers from implied contracts established by our tariff rates approved by the regulatory authorities and includes miscellaneous service charges with the performance obligation satisfied at a point in time when services are rendered to the customer", "label": "Other revenues - natural gas sales related", "terseLabel": "Other revenues - natural gas sales related" } } }, "localname": "Otherrevenuesnaturalgassalesrelated", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RevenueDetails" ], "xbrltype": "monetaryItemType" }, "ogs_OtherrevenuesnaturalgassalesrelatedMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Other revenues - natural gas sales related [Member]", "label": "Other revenues - natural gas sales related [Member]", "terseLabel": "Other revenues - natural gas sales related [Member]" } } }, "localname": "OtherrevenuesnaturalgassalesrelatedMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RevenueDetails" ], "xbrltype": "domainItemType" }, "ogs_OverrecoveredpurchasedgascostsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Represents the amount of over-recovered purchased-gas costs.", "label": "Over-recovered purchased-gas costs [Member]", "terseLabel": "Over-recovered purchased-gas costs [Member]" } } }, "localname": "OverrecoveredpurchasedgascostsMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "ogs_Percentageyieldofhighconsequencepipelineareas": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Minimum percentage yield required to test pipelines previously untested in high-consequence areas.", "label": "PercentageYieldOfHighConsequencePipelineAreas", "terseLabel": "Percentage yield of high consequence pipeline areas" } } }, "localname": "Percentageyieldofhighconsequencepipelineareas", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/CommitmentsAndContingenciesDetails" ], "xbrltype": "percentItemType" }, "ogs_Premiumsrecordedinothercurrentassetsonnaturalgascontractsheld": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of premiums recorded in other current assets on natural gas contracts held", "label": "Premiums recorded in other current assets on natural gas contracts held", "terseLabel": "Premiums recorded in other current assets on natural gas contracts held" } } }, "localname": "Premiumsrecordedinothercurrentassetsonnaturalgascontractsheld", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "ogs_REVENUEAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Revenues disaggregated by source.", "label": "REVENUE [Axis]", "terseLabel": "REVENUE [Axis]" } } }, "localname": "REVENUEAxis", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RevenueDetails" ], "xbrltype": "stringItemType" }, "ogs_REVENUEDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "[Domain] for Revenues disaggregated by source.", "label": "REVENUE [Domain]", "terseLabel": "REVENUE [Domain]" } } }, "localname": "REVENUEDomain", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RevenueDetails" ], "xbrltype": "domainItemType" }, "ogs_ReductioninincometaxexpensefortheamortizationoftheregulatoryliabilityassociatedwithexcessADITthatwasreturnedtocustomers": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Reduction in income tax expense for the amortization of the regulatory liability associated with excess ADIT that was returned to customers", "label": "Reduction in income tax expense for the amortization of the regulatory liability associated with excess ADIT that was returned to customers", "terseLabel": "Reduction in income tax expense for the amortization of the regulatory liability associated with excess ADIT that was returned to customers" } } }, "localname": "ReductioninincometaxexpensefortheamortizationoftheregulatoryliabilityassociatedwithexcessADITthatwasreturnedtocustomers", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "ogs_RegulatedOperatingRevenueOtherCredit": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Regulated Operating Revenue, Other Credit", "label": "Regulated Operating Revenue, Other Credit", "terseLabel": "Regulated Operating Revenue, Other Credit" } } }, "localname": "RegulatedOperatingRevenueOtherCredit", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RevenueDetails" ], "xbrltype": "monetaryItemType" }, "ogs_RegulatoryAssetsandLiabilitiesAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by type of regulatory asset/liabilities itemized in a table of regulatory assets/liabilities.", "label": "Regulatory Assets and Liabilities [Axis]", "terseLabel": "Regulatory Assets and Liabilities [Axis]" } } }, "localname": "RegulatoryAssetsandLiabilitiesAxis", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesTables" ], "xbrltype": "stringItemType" }, "ogs_RegulatoryAssetsandLiabilitiesDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "[Domain] for Information by type of regulatory asset/liabilities itemized in a table of regulatory assets/liabilities.", "label": "Regulatory Assets and Liabilities [Domain]", "terseLabel": "Regulatory Assets and Liabilities [Domain]" } } }, "localname": "RegulatoryAssetsandLiabilitiesDomain", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesTables" ], "xbrltype": "domainItemType" }, "ogs_SCHEDULEOFREGULATEDASSETSANDLIABILITIESLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "[Line Items] for Tabular disclosure of assets and liabilities that result from rate actions of a regulator. Regulatory assets are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet. Rate actions of a regulator can impose a liability on a regulated enterprise resulting in a regulatory liability.", "label": "SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]", "terseLabel": "SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]" } } }, "localname": "SCHEDULEOFREGULATEDASSETSANDLIABILITIESLineItems", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesNotes", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesTables" ], "xbrltype": "stringItemType" }, "ogs_SCHEDULEOFREGULATEDASSETSANDLIABILITIESTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of assets and liabilities that result from rate actions of a regulator. Regulatory assets are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet. Rate actions of a regulator can impose a liability on a regulated enterprise resulting in a regulatory liability.", "label": "SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Table]", "terseLabel": "SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Table]" } } }, "localname": "SCHEDULEOFREGULATEDASSETSANDLIABILITIESTable", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesNotes", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesTables" ], "xbrltype": "stringItemType" }, "ogs_SCHEDULEOFREGULATEDASSETSANDLIABILITIESTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "[Table Text Block] for Tabular disclosure of assets and liabilities that result from rate actions of a regulator. Regulatory assets are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet. Rate actions of a regulator can impose a liability on a regulated enterprise resulting in a regulatory liability.", "label": "SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Table Text Block]", "terseLabel": "SCHEDULE OF REGULATED ASSETS AND LIABILITIES" } } }, "localname": "SCHEDULEOFREGULATEDASSETSANDLIABILITIESTableTextBlock", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesTables" ], "xbrltype": "textBlockItemType" }, "ogs_STATEMENTSOFCOMPREHENSIVEINCOMEParentheticalAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "STATEMENTS OF COMPREHENSIVE INCOME Parenthetical [Abstract]", "label": "STATEMENTS OF COMPREHENSIVE INCOME Parenthetical [Abstract]" } } }, "localname": "STATEMENTSOFCOMPREHENSIVEINCOMEParentheticalAbstract", "nsuri": "http://www.onegas.com/20200630", "xbrltype": "stringItemType" }, "ogs_SignificantAccountingPoliciesLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items for Significant accounting policies of the reporting entity.", "label": "Significant Accounting Policies [Line Items]", "terseLabel": "Significant Accounting Policies [Line Items]" } } }, "localname": "SignificantAccountingPoliciesLineItems", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesDetails", "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesNotes", "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "stringItemType" }, "ogs_SignificantAccountingPoliciesTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Significant accounting policies of the reporting entity.", "label": "Significant Accounting Policies [Table]", "terseLabel": "Significant Accounting Policies [Table]" } } }, "localname": "SignificantAccountingPoliciesTable", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesDetails", "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesNotes", "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "stringItemType" }, "ogs_StrandedDeferredTaxRemeasurementBenefit": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Stranded Deferred Tax Remeasurement Benefit", "label": "Stranded Deferred Tax Remeasurement Benefit", "terseLabel": "Stranded Deferred Tax Remeasurement Benefit" } } }, "localname": "StrandedDeferredTaxRemeasurementBenefit", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "monetaryItemType" }, "ogs_TotalDeferredCreditsAndOtherLiabilities": { "auth_ref": [], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 3.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Total obligations, excluding long-term debt, incurred as part of normal operations that is expected to be repaid beyond the following twelve months or one business cycle.", "label": "Total deferred credits and other liabilities", "totalLabel": "Total deferred credits and other liabilities" } } }, "localname": "TotalDeferredCreditsAndOtherLiabilities", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "ogs_Totalgoodwillandotherassets": { "auth_ref": [], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 3.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets, excluding property, plant and equipment, that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer.", "label": "Total goodwill and other assets", "totalLabel": "Total goodwill and other assets" } } }, "localname": "Totalgoodwillandotherassets", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "ogs_TotalregulatedliabilitiesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Represents the amount of total regulated liabilities.", "label": "Total regulated liabilities [Member]", "terseLabel": "Total regulated liabilities [Member]" } } }, "localname": "TotalregulatedliabilitiesMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "ogs_TotalregulatoryassetsnetofamortizationMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Total regulatory assets, net of amortization", "label": "Total regulatory assets, net of amortization [Member]", "terseLabel": "Total regulatory assets, net of amortization [Member]" } } }, "localname": "TotalregulatoryassetsnetofamortizationMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "ogs_TransportationrevenuesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Transportation revenues represent revenue from contracts with customers through implied contracts established by our tariff rates approved by the regulatory authorities and tariff-based negotiated contracts. The customer receives the benefits of our performance when the commodity is delivered to the customer and the performance obligation is satisfied over time as the customer consumes the natural gas.", "label": "Transportation revenues [Member]", "terseLabel": "Transportation revenues [Member]" } } }, "localname": "TransportationrevenuesMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RevenueDetails" ], "xbrltype": "domainItemType" }, "ogs_Treasurynotesinotherassets": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Treasury notes in other current and noncurrent assets", "label": "Treasury notes in other assets", "terseLabel": "Treasury notes in other assets" } } }, "localname": "Treasurynotesinotherassets", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "ogs_UnderrecoveredpurchasedgascostsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Represents the amount of under-recovered purchased-gas costs [Member]", "label": "Under-recovered purchased-gas costs [Member]", "terseLabel": "Under-recovered purchased-gas costs [Member]" } } }, "localname": "UnderrecoveredpurchasedgascostsMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "ogs_WeathernormalizationMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Weather normalization represents revenue over- or under-recovered through the weather normalization adjustment rider in Kansas.", "label": "Weather normalization [Member]", "terseLabel": "Weather normalization [Member]" } } }, "localname": "WeathernormalizationMember", "nsuri": "http://www.onegas.com/20200630", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "srt_RangeAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statistical Measurement [Axis]", "terseLabel": "Statistical Measurement [Axis]" } } }, "localname": "RangeAxis", "nsuri": "http://fasb.org/srt/2019-01-31", "presentation": [ "http://www.onegas.com/role/LeasesDetails" ], "xbrltype": "stringItemType" }, "srt_RangeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statistical Measurement [Domain]", "terseLabel": "Statistical Measurement [Domain]" } } }, "localname": "RangeMember", "nsuri": "http://fasb.org/srt/2019-01-31", "presentation": [ "http://www.onegas.com/role/LeasesDetails" ], "xbrltype": "domainItemType" }, "srt_ScenarioUnspecifiedDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Scenario [Domain]", "terseLabel": "Scenario [Domain]" } } }, "localname": "ScenarioUnspecifiedDomain", "nsuri": "http://fasb.org/srt/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/BalanceSheetsBalanceSheetsParenthetical", "http://www.onegas.com/role/CommitmentsAndContingenciesDetails", "http://www.onegas.com/role/CommitmentsAndContingenciesNotes", "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails", "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsNotes", "http://www.onegas.com/role/EarningsPerShareDetails", "http://www.onegas.com/role/EarningsPerShareNotes", "http://www.onegas.com/role/EarningsPerShareTables", "http://www.onegas.com/role/EmployeeBenefitPlansDetails", "http://www.onegas.com/role/EmployeeBenefitPlansNotes", "http://www.onegas.com/role/EmployeeBenefitPlansTables", "http://www.onegas.com/role/EquityDetails", "http://www.onegas.com/role/OtherIncomeAndOtherExpenseNotes", "http://www.onegas.com/role/OtherIncomeAndOtherExpenseTables", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesNotes", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesTables", "http://www.onegas.com/role/RevenueNotes", "http://www.onegas.com/role/RevenueTables", "http://www.onegas.com/role/StatementsOfCashFlows", "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncome", "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesDetails", "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesNotes", "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "domainItemType" }, "srt_StatementScenarioAxis": { "auth_ref": [ "r116", "r203" ], "lang": { "en-US": { "role": { "label": "Scenario [Axis]", "terseLabel": "Scenario [Axis]" } } }, "localname": "StatementScenarioAxis", "nsuri": "http://fasb.org/srt/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/BalanceSheetsBalanceSheetsParenthetical", "http://www.onegas.com/role/CommitmentsAndContingenciesDetails", "http://www.onegas.com/role/CommitmentsAndContingenciesNotes", "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails", "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsNotes", "http://www.onegas.com/role/EarningsPerShareDetails", "http://www.onegas.com/role/EarningsPerShareNotes", "http://www.onegas.com/role/EarningsPerShareTables", "http://www.onegas.com/role/EmployeeBenefitPlansDetails", "http://www.onegas.com/role/EmployeeBenefitPlansNotes", "http://www.onegas.com/role/EmployeeBenefitPlansTables", "http://www.onegas.com/role/EquityDetails", "http://www.onegas.com/role/OtherIncomeAndOtherExpenseNotes", "http://www.onegas.com/role/OtherIncomeAndOtherExpenseTables", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesNotes", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesTables", "http://www.onegas.com/role/RevenueNotes", "http://www.onegas.com/role/RevenueTables", "http://www.onegas.com/role/StatementsOfCashFlows", "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncome", "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesDetails", "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesNotes", "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "stringItemType" }, "us-gaap_AccountingPoliciesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Accounting Policies [Abstract]" } } }, "localname": "AccountingPoliciesAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_AccountsPayableCurrent": { "auth_ref": [ "r20" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 2.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).", "label": "Accounts Payable, Current", "terseLabel": "Accounts payable" } } }, "localname": "AccountsPayableCurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccrualForEnvironmentalLossContingenciesIncreaseDecreaseForRevisionInEstimates": { "auth_ref": [ "r117" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of expense (reversal of expense) which increases (decreases) the accrual for environmental loss contingencies from revisions in estimates to existing obligations. Excludes changes related to business acquisitions, divestitures, or currency movement.", "label": "Accrual for Environmental Loss Contingencies, Revision in Estimates", "terseLabel": "Accrual for Environmental Loss Contingencies, Revision in Estimates" } } }, "localname": "AccrualForEnvironmentalLossContingenciesIncreaseDecreaseForRevisionInEstimates", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CommitmentsAndContingenciesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent": { "auth_ref": [ "r4", "r22", "r168" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 3.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Carrying value as of the balance sheet date of obligations incurred and payable for real and property taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).", "label": "Accrual for Taxes Other than Income Taxes, Current", "terseLabel": "Accrued taxes other than income" } } }, "localname": "AccrualForTaxesOtherThanIncomeTaxesCurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Accumulated Other Comprehensive Income (Loss) [Line Items]", "terseLabel": "Accumulated Other Comprehensive Income (Loss) [Line Items]" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossLineItems", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossDetails", "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossNotes", "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossTables" ], "xbrltype": "stringItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax": { "auth_ref": [ "r35", "r37", "r38" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 3.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.", "label": "Accumulated Other Comprehensive Income (Loss), Net of Tax", "terseLabel": "Accumulated other comprehensive loss" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossNetOfTax", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about components of accumulated other comprehensive income (loss).", "label": "Accumulated Other Comprehensive Income (Loss) [Table]", "terseLabel": "Accumulated Other Comprehensive Income (Loss) [Table]" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossTable", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossDetails", "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossNotes", "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossTables" ], "xbrltype": "stringItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeMember": { "auth_ref": [ "r34", "r38", "r41", "r181" ], "lang": { "en-US": { "role": { "documentation": "Accumulated increase (decrease) in equity from transactions and other events and circumstances from non-owner sources, attributable to the parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners.", "label": "AOCI Attributable to Parent [Member]", "terseLabel": "Accumulated Other Comprehensive Income (Loss) [Member]" } } }, "localname": "AccumulatedOtherComprehensiveIncomeMember", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementOfChangesInEquity" ], "xbrltype": "domainItemType" }, "us-gaap_AdditionalPaidInCapital": { "auth_ref": [ "r12" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 2.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.", "label": "Additional Paid in Capital", "terseLabel": "Paid-in Capital" } } }, "localname": "AdditionalPaidInCapital", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdditionalPaidInCapitalMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders.", "label": "Additional Paid-in Capital [Member]", "terseLabel": "Paid-in Capital [Member]" } } }, "localname": "AdditionalPaidInCapitalMember", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementOfChangesInEquity" ], "xbrltype": "domainItemType" }, "us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]", "terseLabel": "Adjustments to reconcile net income to net cash provided by operating activities:" } } }, "localname": "AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables": { "auth_ref": [ "r108" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet.", "label": "Allowance for Doubtful Accounts, Premiums and Other Receivables", "terseLabel": "Allowance for Doubtful Accounts, Premiums and Other Receivables" } } }, "localname": "AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_Assets": { "auth_ref": [ "r105", "r208", "r221" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.", "label": "Assets", "totalLabel": "Total assets" } } }, "localname": "Assets", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Assets [Abstract]", "verboseLabel": "Assets" } } }, "localname": "AssetsAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_AssetsCurrent": { "auth_ref": [ "r0", "r1", "r32" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 2.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.", "label": "Assets, Current", "totalLabel": "Total current assets" } } }, "localname": "AssetsCurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsCurrentAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Assets, Current [Abstract]", "verboseLabel": "Current assets" } } }, "localname": "AssetsCurrentAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_CapitalExpendituresIncurredButNotYetPaid": { "auth_ref": [ "r73", "r74", "r75" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Future cash outflow to pay for purchases of fixed assets that have occurred.", "label": "Capital Expenditures Incurred but Not yet Paid", "terseLabel": "Capital Expenditures Incurred but Not yet Paid" } } }, "localname": "CapitalExpendituresIncurredButNotYetPaid", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CapitalizationLongtermDebtAndEquity": { "auth_ref": [], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 1.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "This element represents the total consolidated (as applicable) capitalization of the entity which is comprised of its long-term debt and equity instruments. The table may be detailed by subsidiary (legal entity) and include information by type of debt or equity detailed by instrument.", "label": "Capitalization, Long-term Debt and Equity", "totalLabel": "Total equity and long-term debt" } } }, "localname": "CapitalizationLongtermDebtAndEquity", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_CapitalizationLongtermDebtAndEquityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Capitalization, Long-term Debt and Equity [Abstract]", "terseLabel": "Equity and long-term debt" } } }, "localname": "CapitalizationLongtermDebtAndEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents": { "auth_ref": [ "r66", "r71", "r76" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 1.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents", "periodEndLabel": "Cash and cash equivalents at end of period", "periodStartLabel": "Cash and cash equivalents at beginning of period", "terseLabel": "Cash and cash equivalents" } } }, "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect": { "auth_ref": [ "r66", "r190" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect", "totalLabel": "Change in cash and cash equivalents" } } }, "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ClassOfStockDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Share of stock differentiated by the voting rights the holder receives. Examples include, but are not limited to, common stock, redeemable preferred stock, nonredeemable preferred stock, and convertible stock.", "label": "Class of Stock [Domain]", "terseLabel": "Class of Stock [Domain]" } } }, "localname": "ClassOfStockDomain", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheetsBalanceSheetsParenthetical", "http://www.onegas.com/role/EquityNotes" ], "xbrltype": "domainItemType" }, "us-gaap_ClassOfStockLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Class of Stock [Line Items]", "terseLabel": "Class of Stock [Line Items]" } } }, "localname": "ClassOfStockLineItems", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EquityNotes" ], "xbrltype": "stringItemType" }, "us-gaap_CommercialPaper": { "auth_ref": [ "r5", "r209", "r222" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 1.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.", "label": "Commercial Paper", "terseLabel": "Commercial Paper", "verboseLabel": "Commercial Paper" } } }, "localname": "CommercialPaper", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/CreditFacilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CommitmentsAndContingencies": { "auth_ref": [ "r27", "r115", "r212", "r226" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.", "label": "Commitments and Contingencies", "terseLabel": "Commitments and contingencies" } } }, "localname": "CommitmentsAndContingencies", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Commitments and Contingencies Disclosure [Abstract]" } } }, "localname": "CommitmentsAndContingenciesDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock": { "auth_ref": [ "r114", "r118" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for commitments and contingencies.", "label": "Commitments and Contingencies Disclosure [Text Block]", "verboseLabel": "COMMITMENTS AND CONTINGENCIES" } } }, "localname": "CommitmentsAndContingenciesDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CommitmentsAndContingenciesNotes" ], "xbrltype": "textBlockItemType" }, "us-gaap_CommonStockDividendsPerShareCashPaid": { "auth_ref": [ "r134" ], "lang": { "en-US": { "role": { "documentation": "Aggregate dividends paid during the period for each share of common stock outstanding.", "label": "Common Stock, Dividends, Per Share, Cash Paid", "terseLabel": "Dividends declared per share of stock" } } }, "localname": "CommonStockDividendsPerShareCashPaid", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockDividendsPerShareDeclared": { "auth_ref": [ "r134" ], "lang": { "en-US": { "role": { "documentation": "Aggregate dividends declared during the period for each share of common stock outstanding.", "label": "Common Stock, Dividends, Per Share, Declared", "terseLabel": "Common Stock, Dividends, Per Share, Declared" } } }, "localname": "CommonStockDividendsPerShareDeclared", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EquityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Stock that is subordinate to all other stock of the issuer.", "label": "Common Stock [Member]", "terseLabel": "Common Stock [Member]" } } }, "localname": "CommonStockMember", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementOfChangesInEquity", "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "domainItemType" }, "us-gaap_CommonStockParOrStatedValuePerShare": { "auth_ref": [ "r10" ], "lang": { "en-US": { "role": { "documentation": "Face amount or stated value per share of common stock.", "label": "Common Stock, Par or Stated Value Per Share", "terseLabel": "Common stock, par value per share" } } }, "localname": "CommonStockParOrStatedValuePerShare", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheetsBalanceSheetsParenthetical" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockSharesAuthorized": { "auth_ref": [ "r10" ], "lang": { "en-US": { "role": { "documentation": "The maximum number of common shares permitted to be issued by an entity's charter and bylaws.", "label": "Common Stock, Shares Authorized", "terseLabel": "Common stock, shares authorized" } } }, "localname": "CommonStockSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheetsBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesIssued": { "auth_ref": [ "r10" ], "lang": { "en-US": { "role": { "documentation": "Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.", "label": "Common Stock, Shares, Issued", "periodEndLabel": "Shares issued, ending balance", "periodStartLabel": "Shares issued, beginning balance", "terseLabel": "Common stock, shares issued" } } }, "localname": "CommonStockSharesIssued", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheetsBalanceSheetsParenthetical", "http://www.onegas.com/role/StatementOfChangesInEquity" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesOutstanding": { "auth_ref": [ "r10", "r127" ], "lang": { "en-US": { "role": { "documentation": "Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.", "label": "Common Stock, Shares, Outstanding", "terseLabel": "Common stock, shares outstanding" } } }, "localname": "CommonStockSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheetsBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockValue": { "auth_ref": [ "r10" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 1.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.", "label": "Common Stock, Value, Issued", "verboseLabel": "Common stock, $0.01 par value: authorized 250,000,000 shares; issued and outstanding 52,920,530 shares at June 30, 2020; issued and outstanding 52,771,749 shares at December 31, 2019" } } }, "localname": "CommonStockValue", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_ComprehensiveIncomeNetOfTax": { "auth_ref": [ "r44", "r46", "r47" ], "calculation": { "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncome": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.", "label": "Comprehensive Income (Loss), Net of Tax, Attributable to Parent", "totalLabel": "Comprehensive income" } } }, "localname": "ComprehensiveIncomeNetOfTax", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_ComprehensiveIncomeNoteTextBlock": { "auth_ref": [ "r57" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.", "label": "Comprehensive Income (Loss) Note [Text Block]", "terseLabel": "Comprehensive Income (Loss) Note [Text Block]" } } }, "localname": "ComprehensiveIncomeNoteTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossNotes" ], "xbrltype": "textBlockItemType" }, "us-gaap_CostOfGoodsAndServicesSold": { "auth_ref": [ "r54" ], "calculation": { "http://www.onegas.com/role/StatementsOfIncome": { "order": 2.0, "parentTag": "us-gaap_OperatingIncomeLoss", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.", "label": "Cost of Goods and Services Sold", "terseLabel": "Cost of natural gas" } } }, "localname": "CostOfGoodsAndServicesSold", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_CreditFacilityAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by type of credit facility. Credit facilities provide capital to borrowers without the need to structure a loan for each borrowing.", "label": "Credit Facility [Axis]", "terseLabel": "Credit Facility [Axis]" } } }, "localname": "CreditFacilityAxis", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails", "http://www.onegas.com/role/CreditFacilitiesNotes" ], "xbrltype": "stringItemType" }, "us-gaap_CreditFacilityDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Type of credit facility. Credit facilities provide capital to borrowers without the need to structure a loan for each borrowing.", "label": "Credit Facility [Domain]", "terseLabel": "Credit Facility [Domain]" } } }, "localname": "CreditFacilityDomain", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails", "http://www.onegas.com/role/CreditFacilitiesNotes" ], "xbrltype": "domainItemType" }, "us-gaap_CustomerDepositsCurrent": { "auth_ref": [ "r22" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 5.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The current portion of money or property received from customers which is either to be returned upon satisfactory contract completion or applied to customer receivables in accordance with the terms of the contract or the understandings.", "label": "Customer Deposits, Current", "terseLabel": "Customer deposits" } } }, "localname": "CustomerDepositsCurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtInstrumentCarryingAmount": { "auth_ref": [ "r6", "r120", "r210", "r220" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.", "label": "Long-term Debt, Gross", "terseLabel": "Long-term Debt, Gross" } } }, "localname": "DebtInstrumentCarryingAmount", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/LongTermDebtDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtInstrumentCovenantDescription": { "auth_ref": [ "r6", "r218" ], "lang": { "en-US": { "role": { "documentation": "Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants.", "label": "Debt Instrument, Covenant Description", "terseLabel": "Debt Instrument, Covenant Description" } } }, "localname": "DebtInstrumentCovenantDescription", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails", "http://www.onegas.com/role/LongTermDebtDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentInterestRateStatedPercentage": { "auth_ref": [ "r24" ], "lang": { "en-US": { "role": { "documentation": "Contractual interest rate for funds borrowed, under the debt agreement.", "label": "Debt Instrument, Interest Rate, Stated Percentage", "terseLabel": "Debt Instrument, Interest Rate, Stated Percentage" } } }, "localname": "DebtInstrumentInterestRateStatedPercentage", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/LongTermDebtDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DebtInstrumentLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Debt Instrument [Line Items]", "terseLabel": "Debt Instrument [Line Items]" } } }, "localname": "DebtInstrumentLineItems", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/LongTermDebtDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentTable": { "auth_ref": [ "r25", "r82", "r128", "r131", "r132", "r133", "r192", "r193", "r195", "r219" ], "lang": { "en-US": { "role": { "documentation": "A table or schedule providing information pertaining to long-term debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.", "label": "Schedule of Long-term Debt Instruments [Table]", "terseLabel": "Schedule of Long-term Debt Instruments [Table]" } } }, "localname": "DebtInstrumentTable", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/LongTermDebtDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet": { "auth_ref": [ "r121", "r194" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of unamortized debt discount (premium) and debt issuance costs.", "label": "Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net", "terseLabel": "Debt issuance costs" } } }, "localname": "DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheetsBalanceSheetsParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredIncomeTaxExpenseBenefit": { "auth_ref": [ "r69", "r80", "r174", "r176" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Deferred Income Tax Expense (Benefit)", "terseLabel": "Deferred income taxes" } } }, "localname": "DeferredIncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredIncomeTaxLiabilitiesNet": { "auth_ref": [ "r170", "r173" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 1.0, "parentTag": "ogs_TotalDeferredCreditsAndOtherLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting.", "label": "Deferred Income Tax Liabilities, Net", "terseLabel": "Deferred income taxes" } } }, "localname": "DeferredIncomeTaxLiabilitiesNet", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Defined Benefit Plan [Abstract]" } } }, "localname": "DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses": { "auth_ref": [ "r151", "r162", "r164" ], "calculation": { "http://www.onegas.com/role/EmployeeBenefitPlansDetails": { "order": 5.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.", "label": "Defined Benefit Plan, Amortization of Gain (Loss)", "negatedTerseLabel": "Amortization of net loss", "terseLabel": "Amortization of net loss" } } }, "localname": "DefinedBenefitPlanAmortizationOfGainsLosses", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossDetails", "http://www.onegas.com/role/EmployeeBenefitPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit": { "auth_ref": [ "r152", "r163", "r164" ], "calculation": { "http://www.onegas.com/role/EmployeeBenefitPlansDetails": { "order": 4.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan.", "label": "Defined Benefit Plan, Amortization of Prior Service Cost (Credit)", "negatedTerseLabel": "Amortization of unrecognized prior service cost", "terseLabel": "Amortization of unrecognized prior service cost" } } }, "localname": "DefinedBenefitPlanAmortizationOfPriorServiceCostCredit", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossDetails", "http://www.onegas.com/role/EmployeeBenefitPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets": { "auth_ref": [ "r150", "r161", "r164" ], "calculation": { "http://www.onegas.com/role/EmployeeBenefitPlansDetails": { "order": 3.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.", "label": "Defined Benefit Plan, Expected Return (Loss) on Plan Assets", "negatedTerseLabel": "Expected return on assets" } } }, "localname": "DefinedBenefitPlanExpectedReturnOnPlanAssets", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EmployeeBenefitPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanInterestCost": { "auth_ref": [ "r143", "r149", "r160", "r164" ], "calculation": { "http://www.onegas.com/role/EmployeeBenefitPlansDetails": { "order": 2.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cost recognized for passage of time related to defined benefit plan.", "label": "Defined Benefit Plan, Interest Cost", "terseLabel": "Interest cost" } } }, "localname": "DefinedBenefitPlanInterestCost", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EmployeeBenefitPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost": { "auth_ref": [ "r147", "r158", "r164" ], "calculation": { "http://www.onegas.com/role/EmployeeBenefitPlansDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of net periodic benefit cost (credit) for defined benefit plan.", "label": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit)", "totalLabel": "Net periodic benefit cost" } } }, "localname": "DefinedBenefitPlanNetPeriodicBenefitCost", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EmployeeBenefitPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]", "terseLabel": "Components of net periodic benefit cost:" } } }, "localname": "DefinedBenefitPlanNetPeriodicBenefitCostAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EmployeeBenefitPlansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanServiceCost": { "auth_ref": [ "r142", "r148", "r159", "r164" ], "calculation": { "http://www.onegas.com/role/EmployeeBenefitPlansDetails": { "order": 1.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.", "label": "Defined Benefit Plan, Service Cost", "terseLabel": "Service cost" } } }, "localname": "DefinedBenefitPlanServiceCost", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EmployeeBenefitPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable": { "auth_ref": [ "r154", "r155", "r156", "r157", "r164" ], "lang": { "en-US": { "role": { "documentation": "Disclosures and provisions pertaining to defined benefit pension plans or other postretirement defined benefit plans. The arrangements are generally based on terms and conditions stipulated by the entity, and which contain a promise by the employer to pay certain amounts or awards at designated future dates, including a period after retirement, upon compliance with stipulated requirements. Excludes disclosures pertaining to defined contribution plans.", "label": "Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table]", "terseLabel": "Employee Benefit Plans [Table]" } } }, "localname": "DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EmployeeBenefitPlansDetails", "http://www.onegas.com/role/EmployeeBenefitPlansNotes", "http://www.onegas.com/role/EmployeeBenefitPlansTables" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]", "terseLabel": "Employee Benefit Plans [Line Items]" } } }, "localname": "DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EmployeeBenefitPlansDetails", "http://www.onegas.com/role/EmployeeBenefitPlansNotes", "http://www.onegas.com/role/EmployeeBenefitPlansTables" ], "xbrltype": "stringItemType" }, "us-gaap_DerivativeNonmonetaryNotionalAmount": { "auth_ref": [ "r183", "r184" ], "lang": { "en-US": { "role": { "documentation": "Nominal number of units used to calculate payment on derivative.", "label": "Derivative, Nonmonetary Notional Amount", "terseLabel": "Derivative, Nonmonetary Notional Amount" } } }, "localname": "DerivativeNonmonetaryNotionalAmount", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails" ], "xbrltype": "decimalItemType" }, "us-gaap_DerivativesReportingOfDerivativeActivity": { "auth_ref": [ "r77", "r83", "r182" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for derivatives entered into for trading purposes and those entered into for purposes other than trading including where and when derivative financial instruments and derivative commodity instruments and their related gains or losses are reported in the entity's statements of financial position, cash flows, and results of operations.", "label": "Derivatives, Reporting of Derivative Activity [Policy Text Block]", "terseLabel": "Derivatives" } } }, "localname": "DerivativesReportingOfDerivativeActivity", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDerivativeFinancialInstrumentsAndFairValueMeasurementsPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_DilutiveSecurities": { "auth_ref": [ "r93" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise stock options, restrictive stock units (RSUs), convertible preferred stock of an employee stock ownership plan (ESOP), and other dilutive convertible securities.", "label": "Dilutive Securities, Effect on Basic Earnings Per Share", "terseLabel": "Effect of dilutive securities on income" } } }, "localname": "DilutiveSecurities", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EarningsPerShareDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DividendPayableDateToBePaidDayMonthAndYear": { "auth_ref": [ "r73" ], "lang": { "en-US": { "role": { "documentation": "Date the declared dividend will be paid, in CCYY-MM-DD format.", "label": "Dividends Payable, Date to be Paid", "terseLabel": "Dividends Payable, Date to be Paid" } } }, "localname": "DividendPayableDateToBePaidDayMonthAndYear", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EquityDetails" ], "xbrltype": "dateItemType" }, "us-gaap_DividendsCommonStock": { "auth_ref": [ "r134", "r217" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).", "label": "Dividends, Common Stock", "negatedTerseLabel": "Common stock dividends - $0.54 and $0.50 per share per quarter as of 2020 and 2019, respectively" } } }, "localname": "DividendsCommonStock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementOfChangesInEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_DividendsPayableDateOfRecordDayMonthAndYear": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.", "label": "Dividends Payable, Date of Record", "terseLabel": "Dividends Payable, Date of Record" } } }, "localname": "DividendsPayableDateOfRecordDayMonthAndYear", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EquityDetails" ], "xbrltype": "dateItemType" }, "us-gaap_EarningsPerShareAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Earnings Per Share [Abstract]", "terseLabel": "Earnings per share" } } }, "localname": "EarningsPerShareAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareBasic": { "auth_ref": [ "r52", "r86", "r89", "r90", "r91", "r92", "r94", "r215", "r228" ], "lang": { "en-US": { "role": { "documentation": "The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.", "label": "Earnings Per Share, Basic", "terseLabel": "Basic", "verboseLabel": "Earnings Per Share, Basic" } } }, "localname": "EarningsPerShareBasic", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EarningsPerShareDetails", "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareBasicAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Earnings Per Share, Basic [Abstract]", "terseLabel": "Basic EPS Calculation" } } }, "localname": "EarningsPerShareBasicAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EarningsPerShareDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareDiluted": { "auth_ref": [ "r52", "r86", "r89", "r90", "r91", "r92", "r94", "r215", "r228" ], "lang": { "en-US": { "role": { "documentation": "The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.", "label": "Earnings Per Share, Diluted", "terseLabel": "Diluted", "verboseLabel": "Earnings Per Share, Diluted" } } }, "localname": "EarningsPerShareDiluted", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EarningsPerShareDetails", "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareDilutedAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Earnings Per Share, Diluted [Abstract]", "terseLabel": "Diluted EPS Calculation" } } }, "localname": "EarningsPerShareDilutedAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EarningsPerShareDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareTextBlock": { "auth_ref": [ "r95" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for earnings per share.", "label": "Earnings Per Share [Text Block]", "terseLabel": "Earnings Per Share [Text Block]" } } }, "localname": "EarningsPerShareTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EarningsPerShareNotes" ], "xbrltype": "textBlockItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate": { "auth_ref": [ "r171", "r172", "r175" ], "lang": { "en-US": { "role": { "documentation": "Percentage of domestic federal statutory tax rate applicable to pretax income (loss).", "label": "Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent", "terseLabel": "Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent" } } }, "localname": "EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "percentItemType" }, "us-gaap_EquityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Equity [Abstract]" } } }, "localname": "EquityAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_EquityComponentDomain": { "auth_ref": [ "r127" ], "lang": { "en-US": { "role": { "documentation": "Components of equity are the parts of the total Equity balance including that which is allocated to common, preferred, treasury stock, retained earnings, etc.", "label": "Equity Component [Domain]", "terseLabel": "Equity Component [Domain]" } } }, "localname": "EquityComponentDomain", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossDetails", "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossNotes", "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossTables", "http://www.onegas.com/role/StatementOfChangesInEquity", "http://www.onegas.com/role/StatementsOfCashFlows", "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "domainItemType" }, "us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities": { "auth_ref": [ "r167" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 6.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.", "label": "Excess Tax Benefit from Share-based Compensation, Financing Activities", "terseLabel": "Tax withholdings related to net share settlements of stock compensation" } } }, "localname": "ExcessTaxBenefitFromShareBasedCompensationFinancingActivities", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]", "terseLabel": "Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails", "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsNotes" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable": { "auth_ref": [ "r185", "r186", "r187", "r189" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about asset and liability measured at fair value on recurring and nonrecurring basis.", "label": "Fair Value, Recurring and Nonrecurring [Table]", "terseLabel": "Fair Value, Recurring and Nonrecurring [Table]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails", "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsNotes" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByFairValueHierarchyLevelAxis": { "auth_ref": [ "r145", "r146", "r164", "r186", "r204" ], "lang": { "en-US": { "role": { "documentation": "Information by level within fair value hierarchy and fair value measured at net asset value per share as practical expedient.", "label": "Fair Value Hierarchy and NAV [Axis]", "terseLabel": "Fair Value Hierarchy and NAV [Axis]" } } }, "localname": "FairValueByFairValueHierarchyLevelAxis", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueDisclosuresTextBlock": { "auth_ref": [ "r188" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.", "label": "Fair Value Disclosures [Text Block]", "terseLabel": "Fair Value Disclosures" } } }, "localname": "FairValueDisclosuresTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsNotes" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueInputsLevel1Member": { "auth_ref": [ "r145", "r146", "r164", "r186", "r205" ], "lang": { "en-US": { "role": { "documentation": "Quoted prices in active markets for identical assets or liabilities that the reporting entity can access at the measurement date.", "label": "Fair Value, Inputs, Level 1 [Member]", "terseLabel": "Fair Value, Inputs, Level 1 [Member]" } } }, "localname": "FairValueInputsLevel1Member", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel2Member": { "auth_ref": [ "r145", "r146", "r164", "r186", "r206" ], "lang": { "en-US": { "role": { "documentation": "Inputs other than quoted prices included within level 1 that are observable for an asset or liability, either directly or indirectly, including, but not limited to, quoted prices for similar assets or liabilities in active markets, or quoted prices for identical or similar assets or liabilities in inactive markets.", "label": "Fair Value, Inputs, Level 2 [Member]", "terseLabel": "Fair Value, Inputs, Level 2 [Member]" } } }, "localname": "FairValueInputsLevel2Member", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementPolicyPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for fair value measurements of financial and non-financial assets, liabilities and instruments classified in shareholders' equity. Disclosures include, but are not limited to, how an entity that manages a group of financial assets and liabilities on the basis of its net exposure measures the fair value of those assets and liabilities.", "label": "Fair Value Measurement, Policy [Policy Text Block]", "terseLabel": "Fair Value Measurement" } } }, "localname": "FairValueMeasurementPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDerivativeFinancialInstrumentsAndFairValueMeasurementsPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueMeasurementsFairValueHierarchyDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Categories used to prioritize the inputs to valuation techniques to measure fair value.", "label": "Fair Value Hierarchy and NAV [Domain]", "terseLabel": "Fair Value, Measurements, Fair Value Hierarchy [Domain]" } } }, "localname": "FairValueMeasurementsFairValueHierarchyDomain", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_Goodwill": { "auth_ref": [ "r112", "r113" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 2.0, "parentTag": "ogs_Totalgoodwillandotherassets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.", "label": "Goodwill", "terseLabel": "Goodwill" } } }, "localname": "Goodwill", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest": { "auth_ref": [ "r50", "r86", "r207", "r213", "r229" ], "calculation": { "http://www.onegas.com/role/StatementsOfIncome": { "order": 1.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.", "label": "Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest", "totalLabel": "Income before income taxes" } } }, "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeStatementAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Income Statement [Abstract]" } } }, "localname": "IncomeStatementAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Income Tax Disclosure [Abstract]" } } }, "localname": "IncomeTaxDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxDisclosureTextBlock": { "auth_ref": [ "r179" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.", "label": "Income Tax Disclosure [Text Block]", "terseLabel": "Income Tax Disclosure" } } }, "localname": "IncomeTaxDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/IncomeTaxesNotes" ], "xbrltype": "textBlockItemType" }, "us-gaap_IncomeTaxEffectsAllocatedDirectlyToEquityCumulativeEffectOfChangeInAccountingPrinciple": { "auth_ref": [ "r177" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cumulative tax effect on beginning retained earnings from change in accounting principle.", "label": "Income Tax Effects Allocated Directly to Equity, Cumulative Effect of Change in Accounting Principle", "terseLabel": "Income Tax Effects Allocated Directly to Equity, Cumulative Effect of Change in Accounting Principle" } } }, "localname": "IncomeTaxEffectsAllocatedDirectlyToEquityCumulativeEffectOfChangeInAccountingPrinciple", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementOfChangesInEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeTaxExpenseBenefit": { "auth_ref": [ "r80", "r104", "r178" ], "calculation": { "http://www.onegas.com/role/StatementsOfIncome": { "order": 2.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.", "label": "Income Tax Expense (Benefit)", "negatedLabel": "Income taxes" } } }, "localname": "IncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInAccountsPayable": { "auth_ref": [ "r68" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 10.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.", "label": "Increase (Decrease) in Accounts Payable", "terseLabel": "Accounts payable" } } }, "localname": "IncreaseDecreaseInAccountsPayable", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInCustomerDeposits": { "auth_ref": [ "r68" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 12.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The increase (decrease) during the period in the amount of customer money held in customer accounts, including security deposits, collateral for a current or future transactions, initial payment of the cost of acquisition or for the right to enter into a contract or agreement.", "label": "Increase (Decrease) in Customer Deposits", "terseLabel": "Customer deposits" } } }, "localname": "IncreaseDecreaseInCustomerDeposits", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInInventories": { "auth_ref": [ "r68" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 7.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.", "label": "Increase (Decrease) in Inventories", "negatedLabel": "Natural gas in storage" } } }, "localname": "IncreaseDecreaseInInventories", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInMaterialsAndSupplies": { "auth_ref": [ "r68" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 6.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The increase (decrease) during the period in the carrying amount of capitalized costs of materials, supplies, or both, which are not included in inventory.", "label": "Increase (Decrease) in Materials and Supplies", "negatedTerseLabel": "Materials and supplies" } } }, "localname": "IncreaseDecreaseInMaterialsAndSupplies", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInOperatingCapitalAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Increase (Decrease) in Operating Capital [Abstract]", "terseLabel": "Changes in assets and liabilities:" } } }, "localname": "IncreaseDecreaseInOperatingCapitalAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet": { "auth_ref": [ "r68" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 13.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) in operating assets after deduction of operating liabilities classified as other.", "label": "Increase (Decrease) in Other Operating Assets and Liabilities, Net", "negatedTerseLabel": "Other assets and liabilities" } } }, "localname": "IncreaseDecreaseInOtherOperatingCapitalNet", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInOtherRegulatoryAssets": { "auth_ref": [ "r68" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 8.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The increase (decrease) during the reporting period in the value of other assets that are created when regulatory agencies permits public utilities to defer costs to the balance sheet.", "label": "Increase (Decrease) in Other Regulatory Assets", "negatedTerseLabel": "Increase (Decrease) in Other Regulatory Assets" } } }, "localname": "IncreaseDecreaseInOtherRegulatoryAssets", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInPropertyAndOtherTaxesPayable": { "auth_ref": [ "r68" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 11.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The increase (decrease) during the period in the amount of cash payments due to taxing authorities for non-income-related taxes.", "label": "Increase (Decrease) in Property and Other Taxes Payable", "terseLabel": "Accrued taxes other than income" } } }, "localname": "IncreaseDecreaseInPropertyAndOtherTaxesPayable", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInReceivables": { "auth_ref": [ "r68" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 5.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The increase (decrease) during the reporting period in the total amount due within one year (or one operating cycle) from all parties, associated with underlying transactions that are classified as operating activities.", "label": "Increase (Decrease) in Receivables", "negatedLabel": "Accounts receivable" } } }, "localname": "IncreaseDecreaseInReceivables", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities": { "auth_ref": [ "r68" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 9.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The increase (decrease) during the reporting period in the value of assets that are created when regulatory agencies permits public utilities to defer costs (revenues) to the balance sheet. This element is a the increase (decrease) of regulatory assets and liabilities combined.", "label": "Increase (Decrease) in Regulatory Assets and Liabilities", "negatedTerseLabel": "Regulatory assets and liabilities" } } }, "localname": "IncreaseDecreaseInRegulatoryAssetsAndLiabilities", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestExpense": { "auth_ref": [ "r49", "r103", "r191", "r194", "r216" ], "calculation": { "http://www.onegas.com/role/StatementsOfIncome": { "order": 1.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of the cost of borrowed funds accounted for as interest expense.", "label": "Interest Expense", "negatedLabel": "Interest expense, net" } } }, "localname": "InterestExpense", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_LeaseArrangementTypeAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by group of related lease arrangements. For example, but not limited to, leases grouped by facility or contractual terms.", "label": "Lease Arrangement, Type [Axis]", "terseLabel": "Lease Arrangement, Type [Axis]" } } }, "localname": "LeaseArrangementTypeAxis", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/LeasesNotes" ], "xbrltype": "stringItemType" }, "us-gaap_LeaseArrangementTypeDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Group of related lease arrangements. For example, but not limited to, leases grouped by facility or contractual terms.", "label": "Lease Arrangement, Type [Domain]", "terseLabel": "Lease Arrangement, Type [Domain]" } } }, "localname": "LeaseArrangementTypeDomain", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/LeasesNotes" ], "xbrltype": "domainItemType" }, "us-gaap_LeasesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Leases [Abstract]" } } }, "localname": "LeasesAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_LeasesOfLesseeDisclosureTextBlock": { "auth_ref": [ "r196" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for lessee entity's leasing arrangements including, but not limited to, all of the following: (a.) The basis on which contingent rental payments are determined, (b.) The existence and terms of renewal or purchase options and escalation clauses, (c.) Restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing.", "label": "Leases of Lessee Disclosure [Text Block]", "terseLabel": "Leases of Lessee Disclosure [Text Block]" } } }, "localname": "LeasesOfLesseeDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/LeasesNotes" ], "xbrltype": "textBlockItemType" }, "us-gaap_LesseeLeaseDescriptionLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Lessee, Lease, Description [Line Items]", "terseLabel": "Lessee, Lease, Description [Line Items]" } } }, "localname": "LesseeLeaseDescriptionLineItems", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/LeasesDetails", "http://www.onegas.com/role/LeasesNotes" ], "xbrltype": "stringItemType" }, "us-gaap_LesseeLeaseDescriptionTable": { "auth_ref": [ "r199" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about lessee's leases.", "label": "Lessee, Lease, Description [Table]", "terseLabel": "Lessee, Lease, Description [Table]" } } }, "localname": "LesseeLeaseDescriptionTable", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/LeasesDetails", "http://www.onegas.com/role/LeasesNotes" ], "xbrltype": "stringItemType" }, "us-gaap_LettersOfCreditOutstandingAmount": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.", "label": "Letters of Credit Outstanding, Amount", "terseLabel": "Letters of Credit Outstanding, Amount" } } }, "localname": "LettersOfCreditOutstandingAmount", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesAndStockholdersEquity": { "auth_ref": [ "r16", "r211", "r224" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.", "label": "Liabilities and Equity", "totalLabel": "Total liabilities and equity" } } }, "localname": "LiabilitiesAndStockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesAndStockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Liabilities and Equity [Abstract]", "terseLabel": "Equity and Liabilities" } } }, "localname": "LiabilitiesAndStockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilitiesCurrent": { "auth_ref": [ "r23" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 2.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.", "label": "Liabilities, Current", "totalLabel": "Total current liabilities" } } }, "localname": "LiabilitiesCurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesCurrentAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Liabilities, Current [Abstract]", "verboseLabel": "Current liabilities" } } }, "localname": "LiabilitiesCurrentAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilitiesNoncurrentAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Liabilities, Noncurrent [Abstract]", "terseLabel": "Deferred credits and other liabilities" } } }, "localname": "LiabilitiesNoncurrentAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_LineOfCreditFacilityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Line of Credit Facility [Abstract]" } } }, "localname": "LineOfCreditFacilityAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_LineOfCreditFacilityAxis": { "auth_ref": [ "r21", "r82" ], "lang": { "en-US": { "role": { "documentation": "Information by name of lender, which may be a single entity (for example, but not limited to, a bank, pension fund, venture capital firm) or a group of entities that participate in the line of credit.", "label": "Lender Name [Axis]", "terseLabel": "Lender Name [Axis]" } } }, "localname": "LineOfCreditFacilityAxis", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesNotes" ], "xbrltype": "stringItemType" }, "us-gaap_LineOfCreditFacilityDescription": { "auth_ref": [ "r21" ], "lang": { "en-US": { "role": { "documentation": "Description of the terms of a credit facility arrangement. Terms typically include interest rate, collateral required, guarantees required, repayment requirements, and restrictions on use of assets and activities of the entity.", "label": "Line of Credit Facility, Description", "terseLabel": "Line of Credit Facility, Description" } } }, "localname": "LineOfCreditFacilityDescription", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LineOfCreditFacilityLenderDomain": { "auth_ref": [ "r21" ], "lang": { "en-US": { "role": { "documentation": "Identification of the lender, which may be a single entity (for example, a bank, pension fund, venture capital firm) or a group of entities that participate in the line of credit, including a letter of credit facility.", "label": "Line of Credit Facility, Lender [Domain]", "terseLabel": "Line of Credit Facility, Lender [Domain]" } } }, "localname": "LineOfCreditFacilityLenderDomain", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesNotes" ], "xbrltype": "domainItemType" }, "us-gaap_LineOfCreditFacilityLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Line of Credit Facility [Line Items]", "terseLabel": "Short-term Debt [Line Items]" } } }, "localname": "LineOfCreditFacilityLineItems", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails", "http://www.onegas.com/role/CreditFacilitiesNotes" ], "xbrltype": "stringItemType" }, "us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity": { "auth_ref": [ "r21" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).", "label": "Line of Credit Facility, Remaining Borrowing Capacity", "terseLabel": "Line of Credit Facility, Remaining Borrowing Capacity" } } }, "localname": "LineOfCreditFacilityRemainingBorrowingCapacity", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LineOfCreditFacilityTable": { "auth_ref": [ "r21", "r82" ], "lang": { "en-US": { "role": { "documentation": "A table or schedule providing information pertaining to short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line.", "label": "Line of Credit Facility [Table]", "terseLabel": "Line of Credit Facility [Table]" } } }, "localname": "LineOfCreditFacilityTable", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails", "http://www.onegas.com/role/CreditFacilitiesNotes" ], "xbrltype": "stringItemType" }, "us-gaap_LineOfCreditMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars.", "label": "Line of Credit [Member]", "terseLabel": "Line of Credit [Member]" } } }, "localname": "LineOfCreditMember", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LongTermDebt": { "auth_ref": [ "r6", "r122", "r210", "r222" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.", "label": "Long-term Debt", "terseLabel": "Long-term Debt" } } }, "localname": "LongTermDebt", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Long-term Debt, Unclassified [Abstract]" } } }, "localname": "LongTermDebtAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_LongTermDebtFairValue": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.", "label": "Long-term Debt, Fair Value", "terseLabel": "Long-term Debt, Fair Value" } } }, "localname": "LongTermDebtFairValue", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtNoncurrent": { "auth_ref": [ "r25" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 2.0, "parentTag": "us-gaap_CapitalizationLongtermDebtAndEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.", "label": "Long-term Debt, Excluding Current Maturities", "terseLabel": "Long-term Debt, including current maturities", "verboseLabel": "Long-term debt, excluding current maturities and net issuance costs of $13,540 and $10,936, respectively" } } }, "localname": "LongTermDebtNoncurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/DerivativeFinancialInstrumentsAndFairValueMeasurementsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtTextBlock": { "auth_ref": [ "r123" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for long-term debt.", "label": "Long-term Debt [Text Block]", "terseLabel": "Long-term Debt [Text Block]" } } }, "localname": "LongTermDebtTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/LongTermDebtNotes" ], "xbrltype": "textBlockItemType" }, "us-gaap_LongtermDebtTypeAxis": { "auth_ref": [ "r25" ], "lang": { "en-US": { "role": { "documentation": "Information by type of long-term debt.", "label": "Long-term Debt, Type [Axis]", "terseLabel": "Long-term Debt, Type [Axis]" } } }, "localname": "LongtermDebtTypeAxis", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails", "http://www.onegas.com/role/LongTermDebtDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LongtermDebtTypeDomain": { "auth_ref": [ "r25", "r119" ], "lang": { "en-US": { "role": { "documentation": "Type of long-term debt arrangement, such as notes, line of credit, commercial paper, asset-based financing, project financing, letter of credit financing. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.", "label": "Long-term Debt, Type [Domain]", "terseLabel": "Long-term Debt, Type [Domain]" } } }, "localname": "LongtermDebtTypeDomain", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails", "http://www.onegas.com/role/LongTermDebtDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LossOnReacquiredDebtMember": { "auth_ref": [ "r231", "r235" ], "lang": { "en-US": { "role": { "documentation": "Rate action of a regulator resulting in capitalization or accrual of loss incurred on reacquisition or refinancing of debt.", "label": "Loss on Reacquired Debt [Member]", "terseLabel": "Reacquired debt costs [Member]" } } }, "localname": "LossOnReacquiredDebtMember", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MaterialsSuppliesAndOther": { "auth_ref": [], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 3.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The carrying amount of capitalized costs of materials, supplies, and other assets, which are not included in inventory but used in production.", "label": "Materials, Supplies, and Other", "terseLabel": "Materials and supplies" } } }, "localname": "MaterialsSuppliesAndOther", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivities": { "auth_ref": [ "r66" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 3.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.", "label": "Net Cash Provided by (Used in) Financing Activities", "totalLabel": "Cash used in financing activities" } } }, "localname": "NetCashProvidedByUsedInFinancingActivities", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]", "terseLabel": "Financing activities" } } }, "localname": "NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivities": { "auth_ref": [ "r66" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 2.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.", "label": "Net Cash Provided by (Used in) Investing Activities", "totalLabel": "Cash used in investing activities" } } }, "localname": "NetCashProvidedByUsedInInvestingActivities", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]", "terseLabel": "Investing activities" } } }, "localname": "NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivities": { "auth_ref": [ "r66", "r67", "r70" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 1.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.", "label": "Net Cash Provided by (Used in) Operating Activities", "totalLabel": "Cash provided by operating activities" } } }, "localname": "NetCashProvidedByUsedInOperatingActivities", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]", "terseLabel": "Operating activities" } } }, "localname": "NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_NetIncomeLoss": { "auth_ref": [ "r42", "r45", "r51", "r70", "r93", "r214", "r227" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 14.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 }, "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncome": { "order": 1.0, "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax", "weight": 1.0 }, "http://www.onegas.com/role/StatementsOfIncome": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.", "label": "Net Income (Loss) Attributable to Parent", "terseLabel": "Net income", "totalLabel": "Net income", "verboseLabel": "Net income available for common stock" } } }, "localname": "NetIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EarningsPerShareDetails", "http://www.onegas.com/role/StatementOfChangesInEquity", "http://www.onegas.com/role/StatementsOfCashFlows", "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncome", "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetRegulatoryAssets": { "auth_ref": [ "r232" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The net amount of all regulatory assets less all regulatory liabilities as of the end of the period.", "label": "Net Regulatory Assets", "terseLabel": "Net Regulatory Assets" } } }, "localname": "NetRegulatoryAssets", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact.", "label": "New Accounting Pronouncements, Policy [Policy Text Block]", "terseLabel": "Recently Issued Accounting Standards Update" } } }, "localname": "NewAccountingPronouncementsPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_OperatingExpensesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Operating Expenses [Abstract]", "verboseLabel": "Operating expenses" } } }, "localname": "OperatingExpensesAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "stringItemType" }, "us-gaap_OperatingIncomeLoss": { "auth_ref": [], "calculation": { "http://www.onegas.com/role/StatementsOfIncome": { "order": 2.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The net result for the period of deducting operating expenses from operating revenues.", "label": "Operating Income (Loss)", "totalLabel": "Operating income" } } }, "localname": "OperatingIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseLiability": { "auth_ref": [ "r198" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease.", "label": "Operating Lease, Liability", "terseLabel": "Operating Lease, Liability" } } }, "localname": "OperatingLeaseLiability", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseRightOfUseAsset": { "auth_ref": [ "r197" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of lessee's right to use underlying asset under operating lease.", "label": "Operating Lease, Right-of-Use Asset", "terseLabel": "Operating Lease, Right-of-Use Asset" } } }, "localname": "OperatingLeaseRightOfUseAsset", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherAssetsCurrent": { "auth_ref": [ "r31" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 6.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of current assets classified as other.", "label": "Other Assets, Current", "terseLabel": "Other current assets" } } }, "localname": "OtherAssetsCurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherAssetsNoncurrent": { "auth_ref": [ "r19" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 3.0, "parentTag": "ogs_Totalgoodwillandotherassets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of noncurrent assets classified as other.", "label": "Other Assets, Noncurrent", "terseLabel": "Other assets" } } }, "localname": "OtherAssetsNoncurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTax": { "auth_ref": [ "r43", "r46", "r48", "r127" ], "calculation": { "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncome": { "order": 2.0, "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after tax and reclassification adjustments of other comprehensive income (loss).", "label": "Other Comprehensive Income (Loss), Net of Tax", "terseLabel": "Other comprehensive income", "totalLabel": "Other comprehensive income, net of tax" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTax", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementOfChangesInEquity", "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Other Comprehensive Income (Loss), Net of Tax [Abstract]", "terseLabel": "Other comprehensive income (loss), net of tax" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncome" ], "xbrltype": "stringItemType" }, "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax": { "auth_ref": [ "r33", "r35" ], "calculation": { "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncome": { "order": 1.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.", "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax", "negatedTerseLabel": "Change in pension and postemployment benefit plan liability, net of tax of $(75), $(53), $(149) and $(106), respectively" } } }, "localname": "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax": { "auth_ref": [ "r33", "r36", "r180" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan.", "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax", "terseLabel": "Pension and other postemployment benefit plans, tax" } } }, "localname": "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncomeParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax": { "auth_ref": [ "r35", "r39", "r40" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for net period benefit cost (credit) of defined benefit plan.", "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax", "terseLabel": "Reclassification adjustment, before tax" } } }, "localname": "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax": { "auth_ref": [ "r35", "r39", "r40", "r153" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after tax, of reclassification adjustment from accumulated other comprehensive (income) loss for net periodic benefit cost (credit) of defined benefit plan.", "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax", "terseLabel": "Reclassification adjustment, net of tax" } } }, "localname": "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax": { "auth_ref": [ "r36", "r180" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of tax (expense) benefit for reclassification adjustment from accumulated other comprehensive (income) loss of defined benefit plan.", "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax", "terseLabel": "Reclassification adjustment, Tax" } } }, "localname": "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherIncomeAndExpensesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Other Income and Expenses [Abstract]" } } }, "localname": "OtherIncomeAndExpensesAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock": { "auth_ref": [ "r137", "r169" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions.", "label": "Other Income and Other Expense Disclosure [Text Block]", "terseLabel": "Other Income and Other Expense Disclosure" } } }, "localname": "OtherIncomeAndOtherExpenseDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/OtherIncomeAndOtherExpenseTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_OtherLiabilitiesCurrent": { "auth_ref": [ "r2", "r3", "r22" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 6.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer.", "label": "Other Liabilities, Current", "terseLabel": "Other current liabilities" } } }, "localname": "OtherLiabilitiesCurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherLiabilitiesNoncurrent": { "auth_ref": [ "r26" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 4.0, "parentTag": "ogs_TotalDeferredCreditsAndOtherLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.", "label": "Other Liabilities, Noncurrent", "terseLabel": "Other deferred credits" } } }, "localname": "OtherLiabilitiesNoncurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherNonoperatingIncomeAndExpenseTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for the components of non-operating income or non-operating expense, including, but not limited to, amounts earned from dividends, interest on securities, gain (loss) on securities sold, equity earnings of unconsolidated affiliates, gain (loss) on sales of business, interest expense and other miscellaneous income or expense items.", "label": "Other Nonoperating Income and Expense [Text Block]", "terseLabel": "Other Income and Other Expense Disclosure [Text Block]" } } }, "localname": "OtherNonoperatingIncomeAndExpenseTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/OtherIncomeAndOtherExpenseNotes" ], "xbrltype": "textBlockItemType" }, "us-gaap_OtherNonoperatingIncomeExpense": { "auth_ref": [ "r56" ], "calculation": { "http://www.onegas.com/role/StatementsOfIncome": { "order": 3.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of income (expense) related to nonoperating activities, classified as other.", "label": "Other Nonoperating Income (Expense)", "netLabel": "Other, net", "terseLabel": "Other expense, net" } } }, "localname": "OtherNonoperatingIncomeExpense", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/OtherIncomeAndOtherExpenseDetails", "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember": { "auth_ref": [ "r139", "r154", "r155", "r165" ], "lang": { "en-US": { "role": { "documentation": "Plan designed to provide other postretirement benefits. Includes, but is not limited to, defined benefit and defined contribution plans. Excludes pension benefits.", "label": "Other Postretirement Benefits Plan [Member]", "terseLabel": "ONE Gas Postretirement Benefit Plans [Member]" } } }, "localname": "OtherPostretirementBenefitPlansDefinedBenefitMember", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EmployeeBenefitPlansDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PaymentsForProceedsFromOtherInvestingActivities": { "auth_ref": [ "r58", "r60", "r84" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash (inflow) outflow from investing activities classified as other.", "label": "Payments for (Proceeds from) Other Investing Activities", "negatedTerseLabel": "Other" } } }, "localname": "PaymentsForProceedsFromOtherInvestingActivities", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsOfDebtIssuanceCosts": { "auth_ref": [ "r65" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.", "label": "Payments of Debt Issuance Costs", "negatedTerseLabel": "Payments of Debt Issuance Costs" } } }, "localname": "PaymentsOfDebtIssuanceCosts", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsOfDividends": { "auth_ref": [ "r63" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 5.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.", "label": "Payments of Dividends", "negatedTerseLabel": "Dividends paid" } } }, "localname": "PaymentsOfDividends", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquirePropertyPlantAndEquipment": { "auth_ref": [ "r59" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.", "label": "Payments to Acquire Property, Plant, and Equipment", "negatedLabel": "Capital expenditures" } } }, "localname": "PaymentsToAcquirePropertyPlantAndEquipment", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock": { "auth_ref": [ "r166" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for pension and other postretirement benefits.", "label": "Pension and Other Postretirement Benefits Disclosure [Text Block]", "terseLabel": "EMPLOYEE BENEFIT PLANS" } } }, "localname": "PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EmployeeBenefitPlansNotes" ], "xbrltype": "textBlockItemType" }, "us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent": { "auth_ref": [ "r7", "r140", "r141", "r144" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 3.0, "parentTag": "ogs_TotalDeferredCreditsAndOtherLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.", "label": "Liability, Defined Benefit Plan, Noncurrent", "terseLabel": "Employee benefit obligations" } } }, "localname": "PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_PensionCostsMember": { "auth_ref": [ "r236" ], "lang": { "en-US": { "role": { "documentation": "Rate action of a regulator resulting in capitalization or accrual of pension costs.", "label": "Pension Costs [Member]", "terseLabel": "Pension and postretirement benefit costs [Member]" } } }, "localname": "PensionCostsMember", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PensionPlansDefinedBenefitMember": { "auth_ref": [ "r138", "r154", "r155", "r165" ], "lang": { "en-US": { "role": { "documentation": "Plan designed to provide participant with pension benefits. Includes, but is not limited to, defined benefit and defined contribution plans. Excludes other postretirement benefits.", "label": "Pension Plan [Member]", "terseLabel": "ONE Gas Pension Plans [Member]" } } }, "localname": "PensionPlansDefinedBenefitMember", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EmployeeBenefitPlansDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ProceedsFromIssuanceOfCommonStock": { "auth_ref": [ "r61" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow from the additional capital contribution to the entity.", "label": "Proceeds from Issuance of Common Stock", "terseLabel": "Proceeds from Issuance of Common Stock" } } }, "localname": "ProceedsFromIssuanceOfCommonStock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt": { "auth_ref": [ "r62" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).", "label": "Proceeds from Issuance of Senior Long-term Debt", "terseLabel": "Proceeds from Issuance of Senior Long-term Debt" } } }, "localname": "ProceedsFromIssuanceOfSeniorLongTermDebt", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromRepaymentsOfCommercialPaper": { "auth_ref": [ "r62", "r64", "r72" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The net cash inflow or cash outflow from issuing (borrowing) and repaying commercial paper.", "label": "Proceeds from (Repayments of) Commercial Paper", "terseLabel": "Repayments of notes payable, net" } } }, "localname": "ProceedsFromRepaymentsOfCommercialPaper", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities": { "auth_ref": [ "r58" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow from the sale of other assets recognized in investing activities.", "label": "Proceeds from Sale of Other Assets, Investing Activities", "terseLabel": "Proceeds from Sale of Other Assets, Investing Activities" } } }, "localname": "ProceedsFromSaleOfOtherAssetsInvestingActivities", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromUnsecuredLinesOfCredit": { "auth_ref": [ "r62" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity that is uncollateralized (where debt is not backed by the pledge of collateral).", "label": "Proceeds from Unsecured Lines of Credit", "terseLabel": "Proceeds from Unsecured Lines of Credit" } } }, "localname": "ProceedsFromUnsecuredLinesOfCredit", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PropertyPlantAndEquipmentNetAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Property, Plant and Equipment, Net [Abstract]", "terseLabel": "Property, plant and equipment" } } }, "localname": "PropertyPlantAndEquipmentNetAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_ProvisionForDoubtfulAccounts": { "auth_ref": [ "r53", "r111" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of expense (reversal of expense) for expected credit loss on accounts receivable.", "label": "Accounts Receivable, Credit Loss Expense (Reversal)", "terseLabel": "Provision for doubtful accounts" } } }, "localname": "ProvisionForDoubtfulAccounts", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PublicUtilitiesInventory": { "auth_ref": [ "r18" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 4.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The period end amount for a type of inventory held by the utility in a schedule of inventories.", "label": "Public Utilities, Inventory", "terseLabel": "Natural gas in storage" } } }, "localname": "PublicUtilitiesInventory", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation": { "auth_ref": [], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 1.0, "parentTag": "us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Period end book value of accumulated depreciation on property, plant and equipment (PPE) that is owned by the regulated operations of the public utility.", "label": "Public Utilities, Property, Plant and Equipment, Accumulated Depreciation", "verboseLabel": "Accumulated depreciation and amortization" } } }, "localname": "PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet": { "auth_ref": [], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 1.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Period end amount of total net PPE.", "label": "Public Utilities, Property, Plant and Equipment, Net", "totalLabel": "Net property, plant and equipment" } } }, "localname": "PublicUtilitiesPropertyPlantAndEquipmentNet", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService": { "auth_ref": [], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 2.0, "parentTag": "us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Period end amount of total gross PPE.", "label": "Public Utilities, Property, Plant and Equipment, Plant in Service", "terseLabel": "Property, plant and equipment" } } }, "localname": "PublicUtilitiesPropertyPlantAndEquipmentPlantInService", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_RatioOfIndebtednessToNetCapital1": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Indebtedness divided by net capital.", "label": "Ratio of Indebtedness to Net Capital", "terseLabel": "Ratio of Indebtedness to Net Capital" } } }, "localname": "RatioOfIndebtednessToNetCapital1", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesDetails" ], "xbrltype": "pureItemType" }, "us-gaap_ReceivablesNetCurrent": { "auth_ref": [ "r11", "r17", "r225", "r230" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 2.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.", "label": "Receivables, Net, Current", "terseLabel": "Accounts receivable, net" } } }, "localname": "ReceivablesNetCurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicy": { "auth_ref": [ "r17", "r77", "r109" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for determining the allowance for doubtful accounts for trade and other accounts receivable balances, and when impairments, charge-offs or recoveries are recognized.", "label": "Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block]", "terseLabel": "Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block]" } } }, "localname": "ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicy", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesDetails", "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss).", "label": "Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]", "terseLabel": "Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]" } } }, "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_RegulatedOperatingRevenue": { "auth_ref": [], "calculation": { "http://www.onegas.com/role/StatementsOfIncome": { "order": 1.0, "parentTag": "us-gaap_OperatingIncomeLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The total amount of regulated operating revenues recognized during the period.", "label": "Regulated Operating Revenue", "terseLabel": "Regulated Operating Revenue" } } }, "localname": "RegulatedOperatingRevenue", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/RevenueDetails", "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatedOperatingRevenueGas": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of regulated gas operating revenues recognized during the period.", "label": "Regulated Operating Revenue, Gas", "terseLabel": "Regulated Operating Revenue, Gas" } } }, "localname": "RegulatedOperatingRevenueGas", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/RevenueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatedOperatingRevenueOther": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of regulated other operating revenues recognized during the period.", "label": "Regulated Operating Revenue, Other", "verboseLabel": "Regulated Operating Revenue, Other" } } }, "localname": "RegulatedOperatingRevenueOther", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/RevenueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatoryAssetAxis": { "auth_ref": [ "r232", "r233", "r236" ], "lang": { "en-US": { "role": { "documentation": "Information by type of regulatory asset.", "label": "Regulatory Asset [Axis]", "terseLabel": "Regulatory Asset [Axis]" } } }, "localname": "RegulatoryAssetAxis", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RegulatoryAssetDomain": { "auth_ref": [ "r232" ], "lang": { "en-US": { "role": { "documentation": "Rate action of a regulator resulting in capitalization of costs incurred.", "label": "Regulatory Asset [Domain]", "terseLabel": "Regulatory Asset [Domain]" } } }, "localname": "RegulatoryAssetDomain", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RegulatoryAssets": { "auth_ref": [ "r232" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.", "label": "Regulatory Assets", "terseLabel": "Regulatory Assets" } } }, "localname": "RegulatoryAssets", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatoryAssetsAndLiabilitiesDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Regulatory Assets and Liabilities Disclosure [Abstract]" } } }, "localname": "RegulatoryAssetsAndLiabilitiesDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_RegulatoryAssetsCurrent": { "auth_ref": [ "r232" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 5.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost.", "label": "Regulatory Assets, Current", "terseLabel": "Regulatory assets", "verboseLabel": "Regulatory Assets, Current" } } }, "localname": "RegulatoryAssetsCurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatoryAssetsNoncurrent": { "auth_ref": [ "r232" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 1.0, "parentTag": "ogs_Totalgoodwillandotherassets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer.", "label": "Regulatory Assets, Noncurrent", "terseLabel": "Regulatory assets", "verboseLabel": "Regulatory Assets, Noncurrent" } } }, "localname": "RegulatoryAssetsNoncurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatoryLiabilities": { "auth_ref": [ "r234" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.", "label": "Regulatory Liabilities", "negatedTerseLabel": "Regulatory Liabilities" } } }, "localname": "RegulatoryLiabilities", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatoryLiabilityAxis": { "auth_ref": [ "r234" ], "lang": { "en-US": { "role": { "documentation": "Information by type of regulatory liability.", "label": "Regulatory Liability [Axis]", "terseLabel": "Regulatory Liability [Axis]" } } }, "localname": "RegulatoryLiabilityAxis", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RegulatoryLiabilityCurrent": { "auth_ref": [ "r234" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 4.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount for the individual regulatory current liability as itemized in a table of regulatory current liabilities as of the end of the period.", "label": "Regulatory Liability, Current", "negatedTerseLabel": "Regulatory Liability, Current", "terseLabel": "Regulatory Liability, Current" } } }, "localname": "RegulatoryLiabilityCurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RegulatoryLiabilityDomain": { "auth_ref": [ "r234" ], "lang": { "en-US": { "role": { "documentation": "Rate action of a regulator resulting in accrual of costs or expenses.", "label": "Regulatory Liability [Domain]", "terseLabel": "Regulatory Liability [Domain]" } } }, "localname": "RegulatoryLiabilityDomain", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RegulatoryLiabilityNoncurrent": { "auth_ref": [ "r26" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 2.0, "parentTag": "ogs_TotalDeferredCreditsAndOtherLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period.", "label": "Regulatory Liability, Noncurrent", "negatedTerseLabel": "Regulatory Liability, Noncurrent", "terseLabel": "Regulatory Liability, Noncurrent" } } }, "localname": "RegulatoryLiabilityNoncurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RetainedEarningsAccumulatedDeficit": { "auth_ref": [ "r13", "r134", "r223" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 4.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.", "label": "Retained Earnings (Accumulated Deficit)", "terseLabel": "Retained earnings" } } }, "localname": "RetainedEarningsAccumulatedDeficit", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_RetainedEarningsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.", "label": "Retained Earnings [Member]", "terseLabel": "Retained Earnings [Member]" } } }, "localname": "RetainedEarningsMember", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementOfChangesInEquity", "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "domainItemType" }, "us-gaap_RetirementPlanTypeAxis": { "auth_ref": [ "r138", "r139", "r154", "r155", "r165" ], "lang": { "en-US": { "role": { "documentation": "Information by type of retirement benefit plan. Includes, but is not limited to, retirement benefit arrangement for defined benefit pension and other postretirement plans, retirement benefit arrangement for defined contribution pension and other postretirement plans, and special and contractual termination benefits payable upon retirement.", "label": "Retirement Plan Type [Axis]", "terseLabel": "Retirement Plan Type [Axis]" } } }, "localname": "RetirementPlanTypeAxis", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EmployeeBenefitPlansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RetirementPlanTypeDomain": { "auth_ref": [ "r138", "r139", "r154", "r155", "r165" ], "lang": { "en-US": { "role": { "documentation": "Type of plan designed to provide participants with retirement benefits. Includes, but is not limited to, retirement benefit arrangement for defined benefit pension and other postretirement plans, retirement benefit arrangement for defined contribution pension and other postretirement plans, and special and contractual termination benefits payable upon retirement.", "label": "Retirement Plan Type [Domain]", "terseLabel": "Retirement Plan Type [Domain]" } } }, "localname": "RetirementPlanTypeDomain", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EmployeeBenefitPlansDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RevenueRecognitionPolicyTextBlock": { "auth_ref": [ "r78", "r79" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for revenue. Includes revenue from contract with customer and from other sources.", "label": "Revenue [Policy Text Block]", "terseLabel": "Revenue [Policy Text Block]" } } }, "localname": "RevenueRecognitionPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/RevenueNotes" ], "xbrltype": "textBlockItemType" }, "us-gaap_RevenuesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Revenues [Abstract]" } } }, "localname": "RevenuesAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability": { "auth_ref": [ "r200", "r201" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of increase in right-of-use asset obtained in exchange for operating lease liability.", "label": "Right-of-Use Asset Obtained in Exchange for Operating Lease Liability", "terseLabel": "Right-of-Use Asset Obtained in Exchange for Operating Lease Liability" } } }, "localname": "RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/LeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock": { "auth_ref": [ "r93" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.", "label": "Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]", "terseLabel": "Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]" } } }, "localname": "ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EarningsPerShareTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock": { "auth_ref": [ "r106" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of entity-wide revenues from external customers for each product or service or each group of similar products or services if the information is not provided as part of the reportable operating segment information.", "label": "Revenue from External Customers by Products and Services [Table Text Block]", "terseLabel": "Revenues Disaggregated by Source [Table]" } } }, "localname": "ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/RevenueTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfNetBenefitCostsTableTextBlock": { "auth_ref": [ "r147" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.", "label": "Schedule of Net Benefit Costs [Table Text Block]", "terseLabel": "Schedule of Net Benefit Costs [Table Text Block]" } } }, "localname": "ScheduleOfNetBenefitCostsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EmployeeBenefitPlansTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for detailed information about regulatory assets and liabilities, including current and noncurrent assets created when regulatory agencies permit the deferral of costs to the balance sheet that would otherwise be required to appear on the company's income statement and would be charged against current expenses or revenues, as well as current and noncurrent liabilities created when regulatory agencies permit.", "label": "Schedule of Regulatory Assets and Liabilities [Text Block]", "terseLabel": "Schedule of Regulatory Assets and Liabilities" } } }, "localname": "ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesNotes" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfStockByClassTable": { "auth_ref": [ "r28", "r81", "r124", "r125", "r126", "r128", "r129", "r130", "r131", "r132", "r133", "r134" ], "lang": { "en-US": { "role": { "documentation": "Schedule detailing information related to equity by class of stock. Class of stock includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. It also includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity.", "label": "Schedule of Stock by Class [Table]", "terseLabel": "Schedule of Stock by Class [Table]" } } }, "localname": "ScheduleOfStockByClassTable", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EquityNotes" ], "xbrltype": "stringItemType" }, "us-gaap_SegmentReportingDisclosureOfMajorCustomers": { "auth_ref": [ "r107" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of the extent of enterprise reliance on its major customers. For example, includes revenues from transactions with a single external customer amounting to 10 percent or more of the entity's revenues, the total amount of revenues from each such customer, and the identity of the segment or segments reporting the revenues. A group of entities that the entity knows to be under common control generally will be considered a single customer for inclusion in this item. The federal government, a state government, a local government (for example, a county or municipality), or a foreign government each will generally be considered as a single customer for inclusion in this item.", "label": "Segment Reporting, Disclosure of Major Customers", "terseLabel": "Segment Reporting, Disclosure of Major Customers" } } }, "localname": "SegmentReportingDisclosureOfMajorCustomers", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SegmentReportingPolicyPolicyTextBlock": { "auth_ref": [ "r77" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for segment reporting.", "label": "Segment Reporting, Policy [Policy Text Block]", "terseLabel": "Segments" } } }, "localname": "SegmentReportingPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ShareBasedCompensation": { "auth_ref": [ "r68" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of noncash expense for share-based payment arrangement.", "label": "Share-based Payment Arrangement, Noncash Expense", "terseLabel": "Share-based compensation expense" } } }, "localname": "ShareBasedCompensation", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShortTermDebtTextBlock": { "auth_ref": [ "r123" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for short-term debt.", "label": "Short-term Debt [Text Block]", "terseLabel": "Short-term Debt [Text Block]" } } }, "localname": "ShortTermDebtTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CreditFacilitiesNotes" ], "xbrltype": "textBlockItemType" }, "us-gaap_SignificantAccountingPoliciesTextBlock": { "auth_ref": [ "r85" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for all significant accounting policies of the reporting entity.", "label": "Significant Accounting Policies [Text Block]", "terseLabel": "SIGNIFICANT ACCOUNTING POLICIES" } } }, "localname": "SignificantAccountingPoliciesTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesNotes" ], "xbrltype": "textBlockItemType" }, "us-gaap_StatementClassOfStockAxis": { "auth_ref": [ "r8", "r9", "r10", "r127" ], "lang": { "en-US": { "role": { "documentation": "Information by the different classes of stock of the entity.", "label": "Class of Stock [Axis]", "terseLabel": "Class of Stock [Axis]" } } }, "localname": "StatementClassOfStockAxis", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheetsBalanceSheetsParenthetical", "http://www.onegas.com/role/EquityNotes" ], "xbrltype": "stringItemType" }, "us-gaap_StatementEquityComponentsAxis": { "auth_ref": [ "r30", "r127" ], "lang": { "en-US": { "role": { "documentation": "Information by component of equity.", "label": "Equity Components [Axis]", "terseLabel": "Equity Components [Axis]" } } }, "localname": "StatementEquityComponentsAxis", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossDetails", "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossNotes", "http://www.onegas.com/role/AccumulatedOtherComprehensiveIncomeLossTables", "http://www.onegas.com/role/StatementOfChangesInEquity", "http://www.onegas.com/role/StatementsOfCashFlows", "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "stringItemType" }, "us-gaap_StatementLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Statement [Line Items]", "terseLabel": "Statement [Line Items]" } } }, "localname": "StatementLineItems", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/BalanceSheetsBalanceSheetsParenthetical", "http://www.onegas.com/role/EquityDetails", "http://www.onegas.com/role/OtherIncomeAndOtherExpenseDetails", "http://www.onegas.com/role/OtherIncomeAndOtherExpenseNotes", "http://www.onegas.com/role/OtherIncomeAndOtherExpenseTables", "http://www.onegas.com/role/RevenueDetails", "http://www.onegas.com/role/RevenueNotes", "http://www.onegas.com/role/RevenueTables", "http://www.onegas.com/role/StatementOfChangesInEquity", "http://www.onegas.com/role/StatementsOfCashFlows", "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncome", "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "stringItemType" }, "us-gaap_StatementOfCashFlowsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement of Cash Flows [Abstract]" } } }, "localname": "StatementOfCashFlowsAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfFinancialPositionAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement of Financial Position [Abstract]" } } }, "localname": "StatementOfFinancialPositionAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement of Comprehensive Income [Abstract]" } } }, "localname": "StatementOfIncomeAndComprehensiveIncomeAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfStockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement of Stockholders' Equity [Abstract]" } } }, "localname": "StatementOfStockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule reflecting a Statement of Income, Statement of Cash Flows, Statement of Financial Position, Statement of Shareholders' Equity and Other Comprehensive Income, or other statement as needed.", "label": "Statement [Table]", "terseLabel": "Statement [Table]" } } }, "localname": "StatementTable", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/BalanceSheetsBalanceSheetsParenthetical", "http://www.onegas.com/role/EquityDetails", "http://www.onegas.com/role/OtherIncomeAndOtherExpenseDetails", "http://www.onegas.com/role/OtherIncomeAndOtherExpenseNotes", "http://www.onegas.com/role/OtherIncomeAndOtherExpenseTables", "http://www.onegas.com/role/RevenueDetails", "http://www.onegas.com/role/RevenueNotes", "http://www.onegas.com/role/RevenueTables", "http://www.onegas.com/role/StatementOfChangesInEquity", "http://www.onegas.com/role/StatementsOfCashFlows", "http://www.onegas.com/role/StatementsOfComprehensiveIncomeStatementsOfComprehensiveIncome", "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "stringItemType" }, "us-gaap_StockIssuedDuringPeriodSharesNewIssues": { "auth_ref": [ "r9", "r10", "r127", "r134" ], "lang": { "en-US": { "role": { "documentation": "Number of new stock issued during the period.", "label": "Stock Issued During Period, Shares, New Issues", "terseLabel": "Common stock issued, shares" } } }, "localname": "StockIssuedDuringPeriodSharesNewIssues", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementOfChangesInEquity" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodValueNewIssues": { "auth_ref": [ "r9", "r10", "r127", "r134" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.", "label": "Stock Issued During Period, Value, New Issues", "terseLabel": "Common stock issued, value" } } }, "localname": "StockIssuedDuringPeriodValueNewIssues", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementOfChangesInEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquity": { "auth_ref": [ "r10", "r14", "r15", "r110" ], "calculation": { "http://www.onegas.com/role/BalanceSheets": { "order": 1.0, "parentTag": "us-gaap_CapitalizationLongtermDebtAndEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.", "label": "Stockholders' Equity Attributable to Parent", "periodEndLabel": "Equity, ending balance", "periodStartLabel": "Equity, beginning balance", "totalLabel": "Total equity" } } }, "localname": "StockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/BalanceSheets", "http://www.onegas.com/role/StatementOfChangesInEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquityNoteDisclosureTextBlock": { "auth_ref": [ "r136" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.", "label": "Stockholders' Equity Note Disclosure [Text Block]", "terseLabel": "Stockholders' Equity Note Disclosure [Text Block]" } } }, "localname": "StockholdersEquityNoteDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EquityNotes" ], "xbrltype": "textBlockItemType" }, "us-gaap_SubsequentEventMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Identifies event that occurred after the balance sheet date but before financial statements are issued or available to be issued.", "label": "Subsequent Event [Member]", "terseLabel": "Subsequent Event [Member]" } } }, "localname": "SubsequentEventMember", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CommitmentsAndContingenciesDetails", "http://www.onegas.com/role/EquityDetails", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SubsequentEventTypeAxis": { "auth_ref": [ "r202" ], "lang": { "en-US": { "role": { "documentation": "Information by event that occurred after the balance sheet date but before financial statements are issued or available to be issued.", "label": "Subsequent Event Type [Axis]", "terseLabel": "Subsequent Event Type [Axis]" } } }, "localname": "SubsequentEventTypeAxis", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CommitmentsAndContingenciesDetails", "http://www.onegas.com/role/EquityDetails", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SubsequentEventTypeDomain": { "auth_ref": [ "r202" ], "lang": { "en-US": { "role": { "documentation": "Event that occurred after the balance sheet date but before financial statements are issued or available to be issued.", "label": "Subsequent Event Type [Domain]", "terseLabel": "Subsequent Event Type [Domain]" } } }, "localname": "SubsequentEventTypeDomain", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/CommitmentsAndContingenciesDetails", "http://www.onegas.com/role/EquityDetails", "http://www.onegas.com/role/RegulatoryAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_TreasuryStockMember": { "auth_ref": [ "r29", "r135" ], "lang": { "en-US": { "role": { "documentation": "Shares of an entity that have been repurchased by the entity. This stock has no voting rights and receives no dividends. Note that treasury stock may be recorded at its total cost or separately as par (or stated) value and additional paid in capital. Classified within stockholders' equity if nonredeemable or redeemable solely at the option of the issuer. Classified within temporary equity if redemption is outside the control of the issuer.", "label": "Treasury Stock [Member]", "terseLabel": "Treasury Stock [Member]" } } }, "localname": "TreasuryStockMember", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementOfChangesInEquity" ], "xbrltype": "domainItemType" }, "us-gaap_UnbilledReceivablesCurrent": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer.", "label": "Unbilled Receivables, Current", "terseLabel": "Unbilled Receivables, Current" } } }, "localname": "UnbilledReceivablesCurrent", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/RevenueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UseOfEstimates": { "auth_ref": [ "r96", "r97", "r98", "r99", "r100", "r101", "r102" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.", "label": "Use of Estimates, Policy [Policy Text Block]", "terseLabel": "Use of Estimates" } } }, "localname": "UseOfEstimates", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_UtilitiesOperatingExpense": { "auth_ref": [ "r55" ], "calculation": { "http://www.onegas.com/role/StatementsOfIncome": { "order": 3.0, "parentTag": "us-gaap_OperatingIncomeLoss", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of operating expense of regulated operation.", "label": "Utilities Operating Expense", "totalLabel": "Total operating expenses" } } }, "localname": "UtilitiesOperatingExpense", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization": { "auth_ref": [ "r55" ], "calculation": { "http://www.onegas.com/role/StatementsOfCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 }, "http://www.onegas.com/role/StatementsOfIncome": { "order": 1.0, "parentTag": "us-gaap_UtilitiesOperatingExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of operating expense for depreciation and amortization of regulated operation.", "label": "Utilities Operating Expense, Depreciation and Amortization", "terseLabel": "Depreciation and amortization" } } }, "localname": "UtilitiesOperatingExpenseDepreciationAndAmortization", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfCashFlows", "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations": { "auth_ref": [ "r55" ], "calculation": { "http://www.onegas.com/role/StatementsOfIncome": { "order": 3.0, "parentTag": "us-gaap_UtilitiesOperatingExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of operating expense for routine plant maintenance, repairs and operations of regulated operation.", "label": "Utilities Operating Expense, Maintenance and Operations", "verboseLabel": "Operations and maintenance" } } }, "localname": "UtilitiesOperatingExpenseMaintenanceAndOperations", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_UtilitiesOperatingExpenseTaxes": { "auth_ref": [ "r55" ], "calculation": { "http://www.onegas.com/role/StatementsOfIncome": { "order": 2.0, "parentTag": "us-gaap_UtilitiesOperatingExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of operating expense for taxes other than income taxes of regulated operation.", "label": "Utilities Operating Expense, Taxes", "terseLabel": "General taxes" } } }, "localname": "UtilitiesOperatingExpenseTaxes", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment": { "auth_ref": [ "r92" ], "lang": { "en-US": { "role": { "documentation": "The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.", "label": "Weighted Average Number Diluted Shares Outstanding Adjustment", "terseLabel": "Effect of dilutive securities on shares" } } }, "localname": "WeightedAverageNumberDilutedSharesOutstandingAdjustment", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EarningsPerShareDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding": { "auth_ref": [ "r88", "r92" ], "lang": { "en-US": { "role": { "documentation": "The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.", "label": "Weighted Average Number of Shares Outstanding, Diluted", "terseLabel": "Diluted", "verboseLabel": "Weighted Average Number of Shares Outstanding, Diluted" } } }, "localname": "WeightedAverageNumberOfDilutedSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EarningsPerShareDetails", "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Weighted Average Number of Shares Outstanding, Diluted [Abstract]", "terseLabel": "Weighted Average Number of Shares Outstanding, Diluted [Abstract]" } } }, "localname": "WeightedAverageNumberOfSharesOutstandingAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "stringItemType" }, "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic": { "auth_ref": [ "r87", "r92" ], "lang": { "en-US": { "role": { "documentation": "Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.", "label": "Weighted Average Number of Shares Outstanding, Basic", "terseLabel": "Basic", "verboseLabel": "Weighted Average Number of Shares Outstanding, Basic" } } }, "localname": "WeightedAverageNumberOfSharesOutstandingBasic", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/EarningsPerShareDetails", "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Weighted Average Number of Shares Outstanding, Basic [Abstract]", "terseLabel": "Weighted Average Number of Shares Outstanding, Basic [Abstract]" } } }, "localname": "WeightedAverageNumberOfSharesOutstandingBasicAbstract", "nsuri": "http://fasb.org/us-gaap/2019-01-31", "presentation": [ "http://www.onegas.com/role/StatementsOfIncome" ], "xbrltype": "stringItemType" } }, "unitCount": 5 } }, "std_ref": { "r0": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765" }, "r1": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6801-107765" }, "r10": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(29))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r100": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6061-108592" }, "r101": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6132-108592" }, "r102": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6143-108592" }, "r103": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599" }, "r104": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599" }, "r105": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599" }, "r106": { "Name": "Accounting Standards Codification", "Paragraph": "40", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e9031-108599" }, "r107": { "Name": "Accounting Standards Codification", "Paragraph": "42", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e9054-108599" }, "r108": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=118936363&loc=d3e5074-111524" }, "r109": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=118936363&loc=d3e5144-111524" }, "r11": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(3))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r110": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 4.E)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707" }, "r111": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447" }, "r112": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266" }, "r113": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975" }, "r114": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "440", "URI": "http://asc.fasb.org/topic&trid=2144648" }, "r115": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349" }, "r116": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=118942415&loc=d3e14615-108349" }, "r117": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "20", "Subparagraph": "(SAB TOPIC 5.Y.Q2)", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751" }, "r118": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "450", "URI": "http://asc.fasb.org/topic&trid=2127136" }, "r119": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=6802200&loc=SL6230698-112601" }, "r12": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(1))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r120": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(1)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870" }, "r121": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870" }, "r122": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870" }, "r123": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "470", "URI": "http://asc.fasb.org/topic&trid=2208564" }, "r124": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(CFRR 211.02)", "Topic": "480", "URI": "http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764" }, "r125": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=65888546&loc=d3e21300-112643" }, "r126": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21553-112644" }, "r127": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644" }, "r128": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644" }, "r129": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21484-112644" }, "r13": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(3))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r130": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21488-112644" }, "r131": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644" }, "r132": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644" }, "r133": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644" }, "r134": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.3-04)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770" }, "r135": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655" }, "r136": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "505", "URI": "http://asc.fasb.org/topic&trid=2208762" }, "r137": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "610", "URI": "http://asc.fasb.org/topic&trid=49130413" }, "r138": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "15", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "712", "URI": "http://asc.fasb.org/extlink&oid=6410066&loc=d3e79218-111664" }, "r139": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "15", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "712", "URI": "http://asc.fasb.org/extlink&oid=6410066&loc=d3e79218-111664" }, "r14": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r140": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=109237824&loc=d3e1703-114919" }, "r141": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=109237824&loc=d3e1731-114919" }, "r142": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r143": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r144": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r145": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(ii)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r146": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(01)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r147": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r148": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r149": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r15": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(31))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r150": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r151": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r152": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(5)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r153": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(i)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r154": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r155": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2410-114920" }, "r156": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2417-114920" }, "r157": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2439-114920" }, "r158": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920" }, "r159": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920" }, "r16": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(32))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r160": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920" }, "r161": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920" }, "r162": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920" }, "r163": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(5)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920" }, "r164": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921" }, "r165": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "70", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942" }, "r166": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "715", "URI": "http://asc.fasb.org/topic&trid=2235017" }, "r167": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=118258462&loc=d3e11374-113907" }, "r168": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "720", "URI": "http://asc.fasb.org/extlink&oid=6419918&loc=d3e35281-107843" }, "r169": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "720", "URI": "http://asc.fasb.org/topic&trid=2122503" }, "r17": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(4))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r170": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=116821951&loc=d3e31931-109318" }, "r171": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319" }, "r172": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319" }, "r173": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319" }, "r174": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319" }, "r175": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB TOPIC 6.I)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817" }, "r176": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 6.I.7)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817" }, "r177": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=109238882&loc=d3e39076-109324" }, "r178": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324" }, "r179": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "740", "URI": "http://asc.fasb.org/topic&trid=2144680" }, "r18": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(6)(a))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r180": { "Name": "Accounting Standards Codification", "Paragraph": "19", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683" }, "r181": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c),(3)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684" }, "r182": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5579240-113959" }, "r183": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959" }, "r184": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959" }, "r185": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258" }, "r186": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258" }, "r187": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bb)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258" }, "r188": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258" }, "r189": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258" }, "r19": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.17)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r190": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "230", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=98513438&loc=d3e33268-110906" }, "r191": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391" }, "r192": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399" }, "r193": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399" }, "r194": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399" }, "r195": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400" }, "r196": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "840", "URI": "http://asc.fasb.org/topic&trid=2208923" }, "r197": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977" }, "r198": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977" }, "r199": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980" }, "r2": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6904-107765" }, "r20": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19(a))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r200": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(2)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980" }, "r201": { "Name": "Accounting Standards Codification", "Paragraph": "53", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971" }, "r202": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "855", "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662" }, "r203": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "855", "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314020-165662" }, "r204": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=118948506&loc=d3e107207-111719" }, "r205": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=118948506&loc=d3e107207-111719" }, "r206": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=118948506&loc=d3e107207-111719" }, "r207": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "20", "Topic": "940", "URI": "http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953" }, "r208": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(11))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r209": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(13)(2))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r21": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19(b),22(b))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r210": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(16))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r211": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(23))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r212": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.17)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r213": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(15))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260" }, "r214": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(22))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260" }, "r215": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(23))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260" }, "r216": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.9)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260" }, "r217": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "405", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817" }, "r218": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "470", "Subparagraph": "(g)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823" }, "r219": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "470", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823" }, "r22": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.20)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r220": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(16))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910" }, "r221": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(12))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910" }, "r222": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(16))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910" }, "r223": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(23)(a)(4))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910" }, "r224": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(25))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910" }, "r225": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(5))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910" }, "r226": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.(a),19)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910" }, "r227": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(18))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263" }, "r228": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(19))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263" }, "r229": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(8))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263" }, "r23": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.21)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r230": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.6-06(3))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=6488278&loc=d3e604059-122996" }, "r231": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "340", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=77907324&loc=d3e43603-110378" }, "r232": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "340", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382" }, "r233": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "340", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6499975&loc=d3e44264-110382" }, "r234": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "405", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394" }, "r235": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "40", "SubTopic": "470", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6500971&loc=d3e49673-110406" }, "r236": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "715", "Topic": "980", "URI": "http://asc.fasb.org/extlink&oid=6501251&loc=d3e52485-110419" }, "r237": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "b" }, "r238": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "d1-1" }, "r239": { "Name": "Form 10-Q", "Number": "240", "Publisher": "SEC", "Section": "13", "Subsection": "a-13" }, "r24": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.22(a)(1))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r240": { "Name": "Forms 10-K, 10-Q, 20-F", "Number": "240", "Publisher": "SEC", "Section": "13", "Subsection": "a-1-" }, "r241": { "Name": "Regulation 12B", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "b-2" }, "r242": { "Name": "Regulation S-T", "Number": "232", "Publisher": "SEC", "Section": "405" }, "r25": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.22)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r26": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.24)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r27": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.25)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r28": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.28,29)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r29": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.29,30)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r3": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6911-107765" }, "r30": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.29-31)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r31": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.8)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r32": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.9)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r33": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(i-k)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580" }, "r34": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580" }, "r35": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=d3e637-108580" }, "r36": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=d3e640-108580" }, "r37": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=d3e681-108580" }, "r38": { "Name": "Accounting Standards Codification", "Paragraph": "14A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580" }, "r39": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=d3e689-108580" }, "r4": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6935-107765" }, "r40": { "Name": "Accounting Standards Codification", "Paragraph": "17A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL34724391-108580" }, "r41": { "Name": "Accounting Standards Codification", "Paragraph": "17B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL34724394-108580" }, "r42": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580" }, "r43": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580" }, "r44": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580" }, "r45": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580" }, "r46": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580" }, "r47": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=d3e557-108580" }, "r48": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=118951672&loc=d3e1436-108581" }, "r49": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(210.5-03(11))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227" }, "r5": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(19)(a)(3))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r50": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(10))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227" }, "r51": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(20))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227" }, "r52": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(21))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227" }, "r53": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(5))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227" }, "r54": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.2(a),(d))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227" }, "r55": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.2(b))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227" }, "r56": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.9)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227" }, "r57": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "220", "URI": "http://asc.fasb.org/topic&trid=2134417" }, "r58": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585" }, "r59": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585" }, "r6": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(22))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r60": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585" }, "r61": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585" }, "r62": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585" }, "r63": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585" }, "r64": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585" }, "r65": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585" }, "r66": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585" }, "r67": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585" }, "r68": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585" }, "r69": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585" }, "r7": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(24))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r70": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585" }, "r71": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3044-108585" }, "r72": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3098-108585" }, "r73": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586" }, "r74": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586" }, "r75": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586" }, "r76": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586" }, "r77": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790" }, "r78": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18823-107790" }, "r79": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18823-107790" }, "r8": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(27))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r80": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(h))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r81": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(d),(e))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r82": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(e),(f))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r83": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(n)(7))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r84": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-04(a))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690" }, "r85": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "235", "URI": "http://asc.fasb.org/topic&trid=2122369" }, "r86": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794" }, "r87": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1448-109256" }, "r88": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1505-109256" }, "r89": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1252-109256" }, "r9": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(28))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r90": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=117326831&loc=SL5780133-109256" }, "r91": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1337-109256" }, "r92": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257" }, "r93": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257" }, "r94": { "Name": "Accounting Standards Codification", "Paragraph": "52", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=117327953&loc=d3e4984-109258" }, "r95": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "260", "URI": "http://asc.fasb.org/topic&trid=2144383" }, "r96": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592" }, "r97": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592" }, "r98": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6161-108592" }, "r99": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6191-108592" } }, "version": "2.1" }