3.8.0.1 html 359 415 1 false 126 0 false 11 false false R1.htm 0001000 - Document - Document and Entity Information Sheet http://www.tenethealth.com/role/DocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 1001000 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS Sheet http://www.tenethealth.com/role/CondensedConsolidatedBalanceSheets CONDENSED CONSOLIDATED BALANCE SHEETS Statements 2 false false R3.htm 1001501 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://www.tenethealth.com/role/CondensedConsolidatedBalanceSheetsParenthetical CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 3 false false R4.htm 1002000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS Sheet http://www.tenethealth.com/role/CondensedConsolidatedStatementsOfOperations CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS Statements 4 false false R5.htm 1003000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OTHER COMPREHENSIVE INCOME Sheet http://www.tenethealth.com/role/CondensedConsolidatedStatementsOfOtherComprehensiveIncome CONDENSED CONSOLIDATED STATEMENTS OF OTHER COMPREHENSIVE INCOME Statements 5 false false R6.htm 1004000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.tenethealth.com/role/CondensedConsolidatedStatementsOfCashFlows CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 6 false false R7.htm 2101100 - Disclosure - BASIS OF PRESENTATION Sheet http://www.tenethealth.com/role/BasisOfPresentation BASIS OF PRESENTATION Notes 7 false false R8.htm 2102100 - Disclosure - ACCOUNTS RECEIVABLE Sheet http://www.tenethealth.com/role/AccountsReceivable ACCOUNTS RECEIVABLE Notes 8 false false R9.htm 2103100 - Disclosure - CONTRACT BALANCES Sheet http://www.tenethealth.com/role/ContractBalances CONTRACT BALANCES Notes 9 false false R10.htm 2104100 - Disclosure - ASSETS AND LIABILITIES HELD FOR SALE Sheet http://www.tenethealth.com/role/AssetsAndLiabilitiesHeldForSale ASSETS AND LIABILITIES HELD FOR SALE Notes 10 false false R11.htm 2105100 - Disclosure - IMPAIRMENT AND RESTRUCTURING CHARGES, AND ACQUISITION-RELATED COSTS Sheet http://www.tenethealth.com/role/ImpairmentAndRestructuringChargesAndAcquisitionRelatedCosts IMPAIRMENT AND RESTRUCTURING CHARGES, AND ACQUISITION-RELATED COSTS Notes 11 false false R12.htm 2106100 - Disclosure - LONG-TERM DEBT AND LEASE OBLIGATIONS Sheet http://www.tenethealth.com/role/LongTermDebtAndLeaseObligations LONG-TERM DEBT AND LEASE OBLIGATIONS Notes 12 false false R13.htm 2107100 - Disclosure - GUARANTEES Sheet http://www.tenethealth.com/role/Guarantees GUARANTEES Notes 13 false false R14.htm 2108100 - Disclosure - EMPLOYEE BENEFIT PLANS Sheet http://www.tenethealth.com/role/EmployeeBenefitPlans EMPLOYEE BENEFIT PLANS Notes 14 false false R15.htm 2109100 - Disclosure - EQUITY Sheet http://www.tenethealth.com/role/Equity EQUITY Notes 15 false false R16.htm 2110100 - Disclosure - NET OPERATING REVENUES Sheet http://www.tenethealth.com/role/NetOperatingRevenues NET OPERATING REVENUES Notes 16 false false R17.htm 2111100 - Disclosure - PROPERTY AND PROFESSIONAL AND GENERAL LIABILITY INSURANCE Sheet http://www.tenethealth.com/role/PropertyAndProfessionalAndGeneralLiabilityInsurance PROPERTY AND PROFESSIONAL AND GENERAL LIABILITY INSURANCE Notes 17 false false R18.htm 2112100 - Disclosure - CLAIMS AND LAWSUITS Sheet http://www.tenethealth.com/role/ClaimsAndLawsuits CLAIMS AND LAWSUITS Notes 18 false false R19.htm 2113100 - Disclosure - REDEEMABLE NONCONTROLLING INTERESTS IN EQUITY OF CONSOLIDATED SUBSIDIARIES Sheet http://www.tenethealth.com/role/RedeemableNoncontrollingInterestsInEquityOfConsolidatedSubsidiaries REDEEMABLE NONCONTROLLING INTERESTS IN EQUITY OF CONSOLIDATED SUBSIDIARIES Notes 19 false false R20.htm 2114100 - Disclosure - INCOME TAXES Sheet http://www.tenethealth.com/role/IncomeTaxes INCOME TAXES Notes 20 false false R21.htm 2115100 - Disclosure - EARNINGS (LOSS) PER COMMON SHARE Sheet http://www.tenethealth.com/role/EarningsLossPerCommonShare EARNINGS (LOSS) PER COMMON SHARE Notes 21 false false R22.htm 2116100 - Disclosure - FAIR VALUE MEASUREMENTS Sheet http://www.tenethealth.com/role/FairValueMeasurements FAIR VALUE MEASUREMENTS Notes 22 false false R23.htm 2117100 - Disclosure - ACQUISITIONS Sheet http://www.tenethealth.com/role/Acquisitions ACQUISITIONS Notes 23 false false R24.htm 2118100 - Disclosure - SEGMENT INFORMATION Sheet http://www.tenethealth.com/role/SegmentInformation SEGMENT INFORMATION Notes 24 false false R25.htm 2119100 - Disclosure - RECENT ACCOUNTING STANDARDS Sheet http://www.tenethealth.com/role/RecentAccountingStandards RECENT ACCOUNTING STANDARDS Notes 25 false false R26.htm 2120100 - Disclosure - SUBSEQUENT EVENTS Sheet http://www.tenethealth.com/role/SubsequentEvents SUBSEQUENT EVENTS Notes 26 false false R27.htm 2201201 - Disclosure - BASIS OF PRESENTATION (Policies) Sheet http://www.tenethealth.com/role/BasisOfPresentationPolicies BASIS OF PRESENTATION (Policies) Policies 27 false false R28.htm 2301302 - Disclosure - BASIS OF PRESENTATION (Tables) Sheet http://www.tenethealth.com/role/BasisOfPresentationTables BASIS OF PRESENTATION (Tables) Tables http://www.tenethealth.com/role/BasisOfPresentation 28 false false R29.htm 2302301 - Disclosure - ACCOUNTS RECEIVABLE (Tables) Sheet http://www.tenethealth.com/role/AccountsReceivableTables ACCOUNTS RECEIVABLE (Tables) Tables http://www.tenethealth.com/role/AccountsReceivable 29 false false R30.htm 2303301 - Disclosure - CONTRACT BALANCES (Tables) Sheet http://www.tenethealth.com/role/ContractBalancesTables CONTRACT BALANCES (Tables) Tables http://www.tenethealth.com/role/ContractBalances 30 false false R31.htm 2304301 - Disclosure - ASSETS AND LIABILITIES HELD FOR SALE ASSETS AND LIABILITIES HELD FOR SALE (Tables) Sheet http://www.tenethealth.com/role/AssetsAndLiabilitiesHeldForSaleAssetsAndLiabilitiesHeldForSaleTables ASSETS AND LIABILITIES HELD FOR SALE ASSETS AND LIABILITIES HELD FOR SALE (Tables) Tables 31 false false R32.htm 2306301 - Disclosure - LONG-TERM DEBT AND LEASE OBLIGATIONS (Tables) Sheet http://www.tenethealth.com/role/LongTermDebtAndLeaseObligationsTables LONG-TERM DEBT AND LEASE OBLIGATIONS (Tables) Tables http://www.tenethealth.com/role/LongTermDebtAndLeaseObligations 32 false false R33.htm 2308301 - Disclosure - EMPLOYEE BENEFIT PLANS (Tables) Sheet http://www.tenethealth.com/role/EmployeeBenefitPlansTables EMPLOYEE BENEFIT PLANS (Tables) Tables http://www.tenethealth.com/role/EmployeeBenefitPlans 33 false false R34.htm 2309301 - Disclosure - EQUITY (Tables) Sheet http://www.tenethealth.com/role/EquityTables EQUITY (Tables) Tables http://www.tenethealth.com/role/Equity 34 false false R35.htm 2310301 - Disclosure - NET OPERATING REVENUES (Tables) Sheet http://www.tenethealth.com/role/NetOperatingRevenuesTables NET OPERATING REVENUES (Tables) Tables http://www.tenethealth.com/role/NetOperatingRevenues 35 false false R36.htm 2312301 - Disclosure - CLAIMS AND LAWSUITS (Tables) Sheet http://www.tenethealth.com/role/ClaimsAndLawsuitsTables CLAIMS AND LAWSUITS (Tables) Tables http://www.tenethealth.com/role/ClaimsAndLawsuits 36 false false R37.htm 2313301 - Disclosure - REDEEMABLE NONCONTROLLING INTERESTS IN EQUITY OF CONSOLIDATED SUBSIDIARIES (Tables) Sheet http://www.tenethealth.com/role/RedeemableNoncontrollingInterestsInEquityOfConsolidatedSubsidiariesTables REDEEMABLE NONCONTROLLING INTERESTS IN EQUITY OF CONSOLIDATED SUBSIDIARIES (Tables) Tables http://www.tenethealth.com/role/RedeemableNoncontrollingInterestsInEquityOfConsolidatedSubsidiaries 37 false false R38.htm 2314301 - Disclosure - INCOME TAXES (Tables) Sheet http://www.tenethealth.com/role/IncomeTaxesTables INCOME TAXES (Tables) Tables http://www.tenethealth.com/role/IncomeTaxes 38 false false R39.htm 2315301 - Disclosure - EARNINGS (LOSS) PER COMMON SHARE (Tables) Sheet http://www.tenethealth.com/role/EarningsLossPerCommonShareTables EARNINGS (LOSS) PER COMMON SHARE (Tables) Tables http://www.tenethealth.com/role/EarningsLossPerCommonShare 39 false false R40.htm 2316301 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) Sheet http://www.tenethealth.com/role/FairValueMeasurementsTables FAIR VALUE MEASUREMENTS (Tables) Tables http://www.tenethealth.com/role/FairValueMeasurements 40 false false R41.htm 2317301 - Disclosure - ACQUISITIONS (Tables) Sheet http://www.tenethealth.com/role/AcquisitionsTables ACQUISITIONS (Tables) Tables http://www.tenethealth.com/role/Acquisitions 41 false false R42.htm 2318301 - Disclosure - SEGMENT INFORMATION (Tables) Sheet http://www.tenethealth.com/role/SegmentInformationTables SEGMENT INFORMATION (Tables) Tables http://www.tenethealth.com/role/SegmentInformation 42 false false R43.htm 2401403 - Disclosure - BASIS OF PRESENTATION (Details) Sheet http://www.tenethealth.com/role/BasisOfPresentationDetails BASIS OF PRESENTATION (Details) Details http://www.tenethealth.com/role/BasisOfPresentationTables 43 false false R44.htm 2401404 - Disclosure - BASIS OF PRESENTATION - ASU Adoption (Details) Sheet http://www.tenethealth.com/role/BasisOfPresentationAsuAdoptionDetails BASIS OF PRESENTATION - ASU Adoption (Details) Details 44 false false R45.htm 2401405 - Disclosure - BASIS OF PRESENTATION - Cash and Cash Equivalents (Details) Sheet http://www.tenethealth.com/role/BasisOfPresentationCashAndCashEquivalentsDetails BASIS OF PRESENTATION - Cash and Cash Equivalents (Details) Details 45 false false R46.htm 2401406 - Disclosure - BASIS OF PRESENTATION - Intangible Assets Summary (Details) Sheet http://www.tenethealth.com/role/BasisOfPresentationIntangibleAssetsSummaryDetails BASIS OF PRESENTATION - Intangible Assets Summary (Details) Details 46 false false R47.htm 2401407 - Disclosure - BASIS OF PRESENTATION - Amortization of Intangible Assets (Details) Sheet http://www.tenethealth.com/role/BasisOfPresentationAmortizationOfIntangibleAssetsDetails BASIS OF PRESENTATION - Amortization of Intangible Assets (Details) Details 47 false false R48.htm 2401408 - Disclosure - BASIS OF PRESENTATION - Investments in Unconsolidated Affiliates (Details) Sheet http://www.tenethealth.com/role/BasisOfPresentationInvestmentsInUnconsolidatedAffiliatesDetails BASIS OF PRESENTATION - Investments in Unconsolidated Affiliates (Details) Details 48 false false R49.htm 2402402 - Disclosure - ACCOUNTS RECEIVABLE - Components (Details) Sheet http://www.tenethealth.com/role/AccountsReceivableComponentsDetails ACCOUNTS RECEIVABLE - Components (Details) Details 49 false false R50.htm 2402403 - Disclosure - ACCOUNTS RECEIVABLE - Allowance (Details) Sheet http://www.tenethealth.com/role/AccountsReceivableAllowanceDetails ACCOUNTS RECEIVABLE - Allowance (Details) Details 50 false false R51.htm 2402404 - Disclosure - ACCOUNTS RECEIVABLE - Other Receivables (Details) Sheet http://www.tenethealth.com/role/AccountsReceivableOtherReceivablesDetails ACCOUNTS RECEIVABLE - Other Receivables (Details) Details 51 false false R52.htm 2403402 - Disclosure - CONTRACT BALANCES - Hospital Operations and Other Segment (Details) Sheet http://www.tenethealth.com/role/ContractBalancesHospitalOperationsAndOtherSegmentDetails CONTRACT BALANCES - Hospital Operations and Other Segment (Details) Details 52 false false R53.htm 2403403 - Disclosure - CONTRACT BALANCES - Conifer Segment (Details) Sheet http://www.tenethealth.com/role/ContractBalancesConiferSegmentDetails CONTRACT BALANCES - Conifer Segment (Details) Details 53 false false R54.htm 2403404 - Disclosure - CONTRACT BALANCES - Contract Costs (Details) Sheet http://www.tenethealth.com/role/ContractBalancesContractCostsDetails CONTRACT BALANCES - Contract Costs (Details) Details 54 false false R55.htm 2404402 - Disclosure - ASSETS AND LIABILITIES HELD FOR SALE (Details) Sheet http://www.tenethealth.com/role/AssetsAndLiabilitiesHeldForSaleDetails ASSETS AND LIABILITIES HELD FOR SALE (Details) Details http://www.tenethealth.com/role/AssetsAndLiabilitiesHeldForSaleAssetsAndLiabilitiesHeldForSaleTables 55 false false R56.htm 2404403 - Disclosure - ASSETS AND LIABILITIES HELD FOR SALE - Net Assets Held For Sale (Details) Sheet http://www.tenethealth.com/role/AssetsAndLiabilitiesHeldForSaleNetAssetsHeldForSaleDetails ASSETS AND LIABILITIES HELD FOR SALE - Net Assets Held For Sale (Details) Details 56 false false R57.htm 2404404 - Disclosure - ASSETS AND LIABILITIES HELD FOR SALE - Significant Disposals (Details) Sheet http://www.tenethealth.com/role/AssetsAndLiabilitiesHeldForSaleSignificantDisposalsDetails ASSETS AND LIABILITIES HELD FOR SALE - Significant Disposals (Details) Details 57 false false R58.htm 2405401 - Disclosure - IMPAIRMENT AND RESTRUCTURING CHARGES, AND ACQUISITION-RELATED COSTS (Details) Sheet http://www.tenethealth.com/role/ImpairmentAndRestructuringChargesAndAcquisitionRelatedCostsDetails IMPAIRMENT AND RESTRUCTURING CHARGES, AND ACQUISITION-RELATED COSTS (Details) Details http://www.tenethealth.com/role/ImpairmentAndRestructuringChargesAndAcquisitionRelatedCosts 58 false false R59.htm 2406402 - Disclosure - LONG-TERM DEBT AND LEASE OBLIGATIONS - Schedule of Debt (Details) Sheet http://www.tenethealth.com/role/LongTermDebtAndLeaseObligationsScheduleOfDebtDetails LONG-TERM DEBT AND LEASE OBLIGATIONS - Schedule of Debt (Details) Details 59 false false R60.htm 2406403 - Disclosure - LONG-TERM DEBT AND LEASE OBLIGATIONS - Senior Secured and Senior Secured Notes (Details) Notes http://www.tenethealth.com/role/LongTermDebtAndLeaseObligationsSeniorSecuredAndSeniorSecuredNotesDetails LONG-TERM DEBT AND LEASE OBLIGATIONS - Senior Secured and Senior Secured Notes (Details) Details 60 false false R61.htm 2406404 - Disclosure - LONG-TERM DEBT AND LEASE OBLIGATIONS - Credit Agreement and Letter of Credit Facility (Details) Sheet http://www.tenethealth.com/role/LongTermDebtAndLeaseObligationsCreditAgreementAndLetterOfCreditFacilityDetails LONG-TERM DEBT AND LEASE OBLIGATIONS - Credit Agreement and Letter of Credit Facility (Details) Details 61 false false R62.htm 2407401 - Disclosure - GUARANTEES (Details) Sheet http://www.tenethealth.com/role/GuaranteesDetails GUARANTEES (Details) Details http://www.tenethealth.com/role/Guarantees 62 false false R63.htm 2408402 - Disclosure - EMPLOYEE BENEFIT PLANS (Details) Sheet http://www.tenethealth.com/role/EmployeeBenefitPlansDetails EMPLOYEE BENEFIT PLANS (Details) Details http://www.tenethealth.com/role/EmployeeBenefitPlansTables 63 false false R64.htm 2408403 - Disclosure - EMPLOYEE BENEFIT PLANS - Stock Options (Details) Sheet http://www.tenethealth.com/role/EmployeeBenefitPlansStockOptionsDetails EMPLOYEE BENEFIT PLANS - Stock Options (Details) Details 64 false false R65.htm 2408404 - Disclosure - EMPLOYEE BENEFIT PLANS - Range of Exercise Prices (Details) Sheet http://www.tenethealth.com/role/EmployeeBenefitPlansRangeOfExercisePricesDetails EMPLOYEE BENEFIT PLANS - Range of Exercise Prices (Details) Details 65 false false R66.htm 2408405 - Disclosure - EMPLOYEE BENEFIT PLANS - Restricted Stock Units (Details) Sheet http://www.tenethealth.com/role/EmployeeBenefitPlansRestrictedStockUnitsDetails EMPLOYEE BENEFIT PLANS - Restricted Stock Units (Details) Details 66 false false R67.htm 2408406 - Disclosure - EMPLOYEE BENEFIT PLANS - Employee Retirement Plans (Details) Sheet http://www.tenethealth.com/role/EmployeeBenefitPlansEmployeeRetirementPlansDetails EMPLOYEE BENEFIT PLANS - Employee Retirement Plans (Details) Details 67 false false R68.htm 2409402 - Disclosure - EQUITY - Changes in Shareholders' Equity (Details) Sheet http://www.tenethealth.com/role/EquityChangesInShareholdersEquityDetails EQUITY - Changes in Shareholders' Equity (Details) Details 68 false false R69.htm 2409403 - Disclosure - EQUITY - Changes in Shareholders' Equity - Noncontrolling interests (Details) Sheet http://www.tenethealth.com/role/EquityChangesInShareholdersEquityNoncontrollingInterestsDetails EQUITY - Changes in Shareholders' Equity - Noncontrolling interests (Details) Details 69 false false R70.htm 2410402 - Disclosure - NET OPERATING REVENUES (Details) Sheet http://www.tenethealth.com/role/NetOperatingRevenuesDetails NET OPERATING REVENUES (Details) Details http://www.tenethealth.com/role/NetOperatingRevenuesTables 70 false false R71.htm 2410403 - Disclosure - NET OPERATING REVENUES - Ambulatory Care (Details) Sheet http://www.tenethealth.com/role/NetOperatingRevenuesAmbulatoryCareDetails NET OPERATING REVENUES - Ambulatory Care (Details) Details 71 false false R72.htm 2410404 - Disclosure - NET OPERATING REVENUES - Conifer (Details) Sheet http://www.tenethealth.com/role/NetOperatingRevenuesConiferDetails NET OPERATING REVENUES - Conifer (Details) Details 72 false false R73.htm 2410405 - Disclosure - NET OPERATING REVENUES - Performance Obligations (Details) Sheet http://www.tenethealth.com/role/NetOperatingRevenuesPerformanceObligationsDetails NET OPERATING REVENUES - Performance Obligations (Details) Details 73 false false R74.htm 2411401 - Disclosure - PROPERTY AND PROFESSIONAL AND GENERAL LIABILITY INSURANCE (Details) Sheet http://www.tenethealth.com/role/PropertyAndProfessionalAndGeneralLiabilityInsuranceDetails PROPERTY AND PROFESSIONAL AND GENERAL LIABILITY INSURANCE (Details) Details http://www.tenethealth.com/role/PropertyAndProfessionalAndGeneralLiabilityInsurance 74 false false R75.htm 2411402 - Disclosure - PROPERTY AND PROFESSIONAL AND GENERAL LIABILITY INSURANCE - Professional and General Liability Reserves (Details) Sheet http://www.tenethealth.com/role/PropertyAndProfessionalAndGeneralLiabilityInsuranceProfessionalAndGeneralLiabilityReservesDetails PROPERTY AND PROFESSIONAL AND GENERAL LIABILITY INSURANCE - Professional and General Liability Reserves (Details) Details 75 false false R76.htm 2412402 - Disclosure - CLAIMS AND LAWSUITS (Details) Sheet http://www.tenethealth.com/role/ClaimsAndLawsuitsDetails CLAIMS AND LAWSUITS (Details) Details http://www.tenethealth.com/role/ClaimsAndLawsuitsTables 76 false false R77.htm 2412403 - Disclosure - CLAIMS AND LAWSUITS - Reconciliations (Details) Sheet http://www.tenethealth.com/role/ClaimsAndLawsuitsReconciliationsDetails CLAIMS AND LAWSUITS - Reconciliations (Details) Details 77 false false R78.htm 2413402 - Disclosure - REDEEMABLE NONCONTROLLING INTERESTS IN EQUITY OF CONSOLIDATED SUBSIDIARIES - Ownership percentage (Details) Sheet http://www.tenethealth.com/role/RedeemableNoncontrollingInterestsInEquityOfConsolidatedSubsidiariesOwnershipPercentageDetails REDEEMABLE NONCONTROLLING INTERESTS IN EQUITY OF CONSOLIDATED SUBSIDIARIES - Ownership percentage (Details) Details 78 false false R79.htm 2413403 - Disclosure - REDEEMABLE NONCONTROLLING INTERESTS IN EQUITY OF CONSOLIDATED SUBSIDIARIES - Changes in Redeemable Noncontrolling Interests (Details) Sheet http://www.tenethealth.com/role/RedeemableNoncontrollingInterestsInEquityOfConsolidatedSubsidiariesChangesInRedeemableNoncontrollingInterestsDetails REDEEMABLE NONCONTROLLING INTERESTS IN EQUITY OF CONSOLIDATED SUBSIDIARIES - Changes in Redeemable Noncontrolling Interests (Details) Details 79 false false R80.htm 2413404 - Disclosure - REDEEMABLE NONCONTROLLING INTERESTS IN EQUITY OF CONSOLIDATED SUBSIDIARIES - Segment Details (Details) Sheet http://www.tenethealth.com/role/RedeemableNoncontrollingInterestsInEquityOfConsolidatedSubsidiariesSegmentDetailsDetails REDEEMABLE NONCONTROLLING INTERESTS IN EQUITY OF CONSOLIDATED SUBSIDIARIES - Segment Details (Details) Details http://www.tenethealth.com/role/RedeemableNoncontrollingInterestsInEquityOfConsolidatedSubsidiariesTables 80 false false R81.htm 2414402 - Disclosure - INCOME TAXES (Details) Sheet http://www.tenethealth.com/role/IncomeTaxesDetails INCOME TAXES (Details) Details http://www.tenethealth.com/role/IncomeTaxesTables 81 false false R82.htm 2414403 - Disclosure - INCOME TAXES - Federal Tax Reconciliation (Details) Sheet http://www.tenethealth.com/role/IncomeTaxesFederalTaxReconciliationDetails INCOME TAXES - Federal Tax Reconciliation (Details) Details 82 false false R83.htm 2415402 - Disclosure - EARNINGS (LOSS) PER COMMON SHARE (Details) Sheet http://www.tenethealth.com/role/EarningsLossPerCommonShareDetails EARNINGS (LOSS) PER COMMON SHARE (Details) Details http://www.tenethealth.com/role/EarningsLossPerCommonShareTables 83 false false R84.htm 2415403 - Disclosure - EARNINGS (LOSS) PER COMMON SHARE - Antidilutive securities (Details) Sheet http://www.tenethealth.com/role/EarningsLossPerCommonShareAntidilutiveSecuritiesDetails EARNINGS (LOSS) PER COMMON SHARE - Antidilutive securities (Details) Details http://www.tenethealth.com/role/EarningsLossPerCommonShareTables 84 false false R85.htm 2416402 - Disclosure - FAIR VALUE MEASUREMENTS (Details) Sheet http://www.tenethealth.com/role/FairValueMeasurementsDetails FAIR VALUE MEASUREMENTS (Details) Details http://www.tenethealth.com/role/FairValueMeasurementsTables 85 false false R86.htm 2417402 - Disclosure - ACQUISITIONS - Purchase Price Allocation (Details) Sheet http://www.tenethealth.com/role/AcquisitionsPurchasePriceAllocationDetails ACQUISITIONS - Purchase Price Allocation (Details) Details 86 false false R87.htm 2418402 - Disclosure - SEGMENT INFORMATION - General Information and Customer Concentration (Details) Sheet http://www.tenethealth.com/role/SegmentInformationGeneralInformationAndCustomerConcentrationDetails SEGMENT INFORMATION - General Information and Customer Concentration (Details) Details 87 false false R88.htm 2418403 - Disclosure - SEGMENT INFORMATION - Reconciling Items (Details) Sheet http://www.tenethealth.com/role/SegmentInformationReconcilingItemsDetails SEGMENT INFORMATION - Reconciling Items (Details) Details 88 false false R89.htm 2420401 - Disclosure - SUBSEQUENT EVENTS (Details) Sheet http://www.tenethealth.com/role/SubsequentEventsDetails SUBSEQUENT EVENTS (Details) Details http://www.tenethealth.com/role/SubsequentEvents 89 false false All Reports Book All Reports thc-20180331.xml thc-20180331.xsd thc-20180331_cal.xml thc-20180331_def.xml thc-20180331_lab.xml thc-20180331_pre.xml http://fasb.org/us-gaap/2017-01-31 http://xbrl.sec.gov/dei/2014-01-31 true true