Commitments and Contingencies Disclosure [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Subsidiaries Subsidiaries [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Spirit Realty, Inc. Spirit Realty, Inc. [Member] Spirit Realty, Inc. [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Haggen Operations Holdings, LLC Haggen Operations Holdings, LLC [Member] Haggen Operations Holdings, LLC [Member] Albertons, LLC Albertons, LLC [Member] Albertons, LLC [Member] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] Haggen Operations Holdings, LLC Bankruptcy Claim Haggen Operations Holdings, LLC Bankruptcy Claim [Member] Haggen Operations Holdings, LLC Bankruptcy Claim [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Number of leased properties Property Subject to or Available for Operating Lease, Number of Units Initial litigation settlement Litigation Settlement, Amount Awarded to Other Party Bankruptcy claims settled Bankruptcy Claims, Amount of Claims Settled Stipulated claims collected Proceeds from Legal Settlements Remaining claims Other Receivables Outstanding claims Loss Contingency, Pending Claims, Number Total commitments Commitments To Purchase Capital Assets Commitments To Purchase Capital Assets Total commitments relating to future acquisitions Commitments to Purchase Capital Assets Relating to Future Acquisitions Commitments to Purchase Capital Assets Relating to Future Acquisitions Funded commitments Commitments to Purchase Capital Assets Relating to Future Acquisitions Expected to be Funded Within One Year Commitments to Purchase Capital Assets Relating to Future Acquisitions Expected to be Funded Within One Year Contingently liable amount of debt owed by tenant Contingently Liable For Guarantees Of Indebtedness Owed By Affiliates And Third Parties Contingently Liable For Guarantees Of Indebtedness Owed By Affiliates And Third Parties Number of tenants indemnified by Number Of Tenants Indemnified By Number Of Tenants Indemnified By Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Extinguishment of Debt [Axis] Extinguishment of Debt [Axis] Extinguishment of Debt, Type [Domain] Extinguishment of Debt, Type [Domain] Master Trust Notes Mortgages [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Debt extinguished Extinguishment of Debt, Amount Weighted average contractual interest rate Debt, Weighted Average Interest Rate Gain (loss) on debt extinguishment Gain (Loss) on Extinguishment of Debt Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Series 2014-1 Class A2 Series 2014-1, Class A2 Notes [Member] Series 2014-1, Class A2 Notes [Member] Series 2014-2 Series 2014-2 Notes [Member] Series 2014-2 Notes [Member] Series 2014-3 Series 2014-3 Notes [Member] Series 2014-3 Notes [Member] Series 2014-4 Class A1 Series 2014-4, Class A-1 Notes [Member] Series 2014-4, Class A-1 Notes [Member] Series 2014-4 Class A2 Series 2014-4, Class A-2 Notes [Member] Series 2014-4, Class A-2 Notes [Member] Series 2017-1 Class A Series 2017-1 Class A [Member] Series 2017-1 Class A [Member] Series 2017-1 Class B Series 2017-1 Class B [Member] Series 2017-1 Class B [Member] Total Master Trust 2014 notes Series 2014 Notes [Member] Series 2014 Notes [Member] Series 2013-1 Class A Series 2013-1, Class A Notes [Member] Series 2013-1, Class A Notes [Member] Series 2013-2 Class A Series 2013-2, Class A Notes [Member] Series 2013-2, Class A Notes [Member] Total Master Trust 2013 notes Series 2013 Notes [Member] Series 2013 Notes [Member] Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Weighted average interest rate Long-term Debt, Weighted Average Interest Rate, at Point in Time Maturity Debt Instrument, Term Total debt, gross Long-term Debt, Gross Debt discount, net Debt Instrument, Unamortized Discount (Premium), Net Deferred financing costs, net Debt Issuance Costs, Net Total debt, net Long-term Debt Aggregate principal amount of debt Debt Instrument, Face Amount Equity [Abstract] Stockholders' Equity and Partners' Capital Stockholders' Equity Note Disclosure [Text Block] Investments in and Advances to Affiliates, Schedule of Investments [Abstract] Summary of Real Estate and Loan Activity, Net of Accumulated Depreciation and Amortization Schedule Of Gross Real Estate And Loans Activity [Table Text Block] Schedule of Gross Real Estate and Loans Activity. Schedule of Minimum Future Contractual Rent to be Received Lessee, Operating Lease, Disclosure [Table Text Block] Schedule of Loans Receivable, Net of Premium and Allowance for Loan Losses Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of Lease Intangible Assets and Liabilities, Net of Accumulated Amortization Schedule of Capital Leased Assets [Table Text Block] Schedule of Components of Real Estate Investments Held Under Direct Financing Leases Investments in Direct Financing Leases Schedule [Table Text Block] Investments in Direct Financing Leases Schedule [Table Text Block] Schedule of Activity in Real Estate Assets Held for Sale Schedule of Real Estate Properties [Table Text Block] Summary of Total Impairment Losses Recognized Details of Impairment of Long-Lived Assets Held and Used by Asset [Table Text Block] Summary of Debt Schedule of Long-term Debt Instruments [Table Text Block] Schedule of Debt Maturities Schedule of Maturities of Long-term Debt [Table Text Block] Summary of Components of Interest Expense Related to Borrowings Schedule Of Interest Expense On Debt [Table Text Block] Schedule Of Interest Expense On Debt. Fair Value Disclosures [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Minimum lease payments receivable Capital Leases, Net Investment in Direct Financing Leases, Minimum Payments to be Received Estimated residual value of leased assets Capital Leases, Net Investment in Direct Financing Leases, Unguaranteed Residual Values of Leased Property Unearned income Capital Leases, Net Investment in Direct Financing Leases, Deferred Income Real estate assets under direct financing leases, net Capital Leases, Net Investment in Direct Financing Leases External Credit Rating by Grouping [Axis] External Credit Rating by Grouping [Axis] External Credit Rating by Grouping [Domain] External Credit Rating by Grouping [Domain] Achievement of Two of Three Credit Ratings, S&P at least BBB-, Fitch at least BBB-, Moody's at least Baa3 Achievement of Two of Three Credit Ratings, S&P at least BBB-, Fitch at least BBB-, Moody's at least Baa3 [Member] Achievement of Two of Three Credit Ratings, S&P at least BBB-, Fitch at least BBB-, Moody's at least Baa3 [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Term Loan Term Loan [Member] Term Loan [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR London Interbank Offered Rate (LIBOR) [Member] Number of one-year extension options Debt Instrument, Number Of Extension Options Debt Instrument, Number Of Extension Options Extension option, term Debt Instrument, Extension Option, Term Debt Instrument, Extension Option, Term Accordion feature, maximum borrowing capacity Line of Credit Facility, Accordion Feature, Higher Borrowing Capacity Option Line of Credit Facility, Accordion Feature, Higher Borrowing Capacity Option Reborrow period after repayment Debt Instrument, Period to Reborrow After Repayment Debt Instrument, Period to Reborrow After Repayment Period subject to occurrence limitation Debt Instrument, Period Subject to Occurrence Limitations Debt Instrument, Period Subject to Occurrence Limitations Amount outstanding Long-term Line of Credit Available borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Origination costs Debt Issuance Costs, Gross Unamortized deferred financing costs Earnings Per Share [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Unvested performance shares Unvested Performance Shares [Member] Unvested Performance Shares [Member] Stock options Employee Stock Options [Member] Employee Stock Options [Member] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Unvested shares of restricted stock Restricted Stock [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Basic and diluted income: Earnings Per Share, Basic and Diluted [Abstract] Income (loss) before (loss) gain on disposition of assets Income (Loss) before Gain (Loss) on Sale of Properties (Loss) gain on disposition of assets Gain (Loss) on Disposition of Assets Less: income attributable to unvested restricted stock Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units Less: dividends paid to preferred stockholders Preferred Stock Dividends, Income Statement Impact Net income attributable to common stockholders used in basic and diluted income per share Net Income (Loss) Available to Common Stockholders, Diluted Basic weighted average shares of common stock outstanding: Weighted Average Number of Shares Outstanding, Basic [Abstract] Weighted average shares of common stock outstanding Weighted Average Shares Outstanding including Unvested Shares Weighted Average Shares Outstanding including Unvested Shares Less: unvested weighted average shares of restricted stock Weighted Average Shares Outstanding, Unvested Shares Adjustment Weighted Average Shares Outstanding, Unvested Shares Adjustment Weighted average shares of common stock outstanding used in basic income per share Weighted Average Number of Shares Outstanding, Basic Net income per share attributable to common stockholders—basic (in USD per share) Earnings Per Share, Basic Dilutive weighted average shares of common stock outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Unvested performance share/stock options (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Convertible debt (in shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities Weighted average shares of common stock outstanding used in diluted income per share Weighted Average Number of Shares Outstanding, Diluted Net income per share attributable to common stockholders—diluted (in USD per share) Earnings Per Share, Diluted Potentially dilutive shares of common stock Earnings Per Share, Potentially Dilutive Securities [Abstract] Earnings Per Share, Potentially Dilutive Securities [Abstract] Potentially dilutive shares Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Schedule of Capital Leased Assets [Table] Schedule of Capital Leased Assets [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] In-place leases In Place Leases [Member] In Place Leases [Member] Above-market leases Above Market Lease [Member] Above Market Lease [Member] Below-market leases Below Market Lease [Member] Below Market Lease [Member] Capital Leased Assets [Line Items] Capital Leased Assets [Line Items] Intangible lease assets, gross Intangible Lease Assets Gross Intangible Lease Assets Gross Less: accumulated amortization Accumulated Amortization Of Intangible Lease Assets Accumulated Amortization Of Intangible Lease Assets Intangible lease assets, net Intangible Lease Assets Intangible Lease Assets Intangible lease liabilities, gross Intangible Lease Liabilities Gross Intangible Lease Liabilities Gross Less: accumulated amortization Accumulated Amortization Of Intangible Lease Liabilities Accumulated Amortization Of Intangible Lease Liabilities Intangible lease liabilities, net Intangible Lease Liabilities Intangible Lease Liabilities Schedule of Assets at Fair Value on Nonrecurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Fair Value Inputs of Long-Lived Assets Held and Used and Held for Sale Fair Value Inputs, Assets, Quantitative Information [Table Text Block] Schedule of Carrying Amount and Estimated Fair Value of Financial Instruments Schedule Of Carrying Amount And Estimated Fair Value Of Financial Instruments [Table Text Block] Schedule Of Carrying Amount And Estimated Fair Value Of Financial Instruments [Table Text Block] Schedule of Real Estate Properties [Table] Schedule of Real Estate Properties [Table] Real Estate Property Ownership [Axis] Real Estate Property Ownership [Axis] Real Estate Properties [Domain] Real Estate Properties [Domain] Owned Properties Wholly Owned Properties [Member] Financed Properties Financed Properties [Member] Financed Properties [Member] Real Estate Properties [Line Items] Real Estate Properties [Line Items] Number of Properties Number of Real Estate Properties Owned [Roll Forward] Number of Real Estate Properties Owned [Roll Forward] Gross balance, beginning balance (in properties) Number of Real Estate Properties Acquisitions/improvements (in properties) Number Of Real Estate Properties Acquisitions Improvements Number of Real Estate Properties Acquisitions Improvements Dispositions of real estate (in properties) Number of Real Estate Properties, Disposed Number of Real Estate Properties, Disposed Principal payments and payoffs (in properties) Number Of Real Estate Properties Principal Payment Number of Real Estate Properties Principal Payment Impairments (in properties) Number Of Real Estate Properties Impairments Number of Real Estate Properties Impairments Write-off of gross lease intangibles (in properties) Number of Real Estate Properties Write Off Number of Real Estate Properties Write Off Loan premium amortization and other (in properties) Number Of Real Estate Properties Loan Premium Amortization And Other Number of Real Estate Properties Loan Premium Amortization And Other Gross balance, ending balance (in properties) Dollar Amount of Investments Real Estate and Loan Activity [Roll Forward] Real Estate and Loan Activity [Roll Forward] Gross balance, beginning balance Real Estate Investment Property Gross Real Estate Investment Property Gross Acquisitions/improvements Real Estate Investment Property At Cost Acquisitions Improvements Real Estate Investment Property At Cost Acquisitions Improvements Dispositions of real estate Real Estate Investment Property At Cost, Disposal Real Estate Investment Property At Cost, Disposal Principal payments and payoffs Real Estate Investment Property At Cost Principal Payment Real Estate Investment Property At Cost Principal Payment Impairments Real Estate Investment Property At Cost Impairments Real Estate Investment Property At Cost Impairments Write-off of gross lease intangibles Real Estate Properties at Cost, Write-offs Real Estate Properties at Cost, Write-offs Loan premium amortization and other Real Estate Investment Property At Cost Loan Premium Amortization And Other Real Estate Investment Property At Cost Loan Premium Amortization And Other Gross balance, ending balance Accumulated depreciation and amortization Accumulated Depreciation And Amortization Accumulated Depreciation And Amortization Other Real Estate Investments, Other Net balance, ending balance Real Estate Investments, Net Summary of Dividends Declared Dividends Declared [Table Text Block] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Period Prior to June 15, 2026 Debt Instrument, Redemption, Period One [Member] Unsecured Debt Unsecured Debt [Member] Principal amount issued Debt Instrument, Percentage of Principal Amount Issued Debt Instrument, Percentage of Principal Amount Issued Proceeds from issuance of debt Proceeds from Issuance of Unsecured Debt Redemption price, percent of principal amount Debt Instrument, Redemption Price, Percentage Deferred financing costs Unamortized discount Debt Instrument, Unamortized Discount Scheduled Principal Payments For Borrowings [Table] Scheduled Principal Payments For Borrowings [Table] Scheduled Principal Payments For Borrowings [Table] Mortgages and Notes Payable Mortgages And Notes Payable [Member] Mortgages And Notes Payable [Member] Debt Payment Type [Axis] Debt Payment Type [Axis] Debt Payment Type [Axis] Debt Payment Type [Domain] Debt Payment Type [Domain] Debt Payment Type [Domain] Scheduled Principal Scheduled Principal [Member] Scheduled Principal [Member] Balloon Payment Balloon Payment [Member] Balloon Payment [Member] Scheduled Principal Payments For Borrowings [Line Items] Scheduled Principal Payments For Borrowings [Line Items] Scheduled Principal Payments For Borrowings [Line Items] Scheduled Debt Maturities Long-term Debt, Fiscal Year Maturity [Abstract] Remainder of 2018 Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 2019 Long-term Debt, Maturities, Repayments of Principal in Year Two 2020 Long-term Debt, Maturities, Repayments of Principal in Year Three 2021 Long-term Debt, Maturities, Repayments of Principal in Year Four 2022 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Risks and Uncertainties [Abstract] Significant Credit and Revenue Concentration Significant Credit And Revenue Concentration Disclosure [Text Block] Significant Credit and Revenue Concentration Disclosure. Debt Debt Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Preferred Stock Preferred Stock Including Additional Paid in Capital [Member] Common Stock Common Stock [Member] Capital in Excess of Par Value Capital Units [Member] Accumulated Deficit Retained Earnings [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Preferred shares outstanding, beginning balance Preferred Stock, Shares Outstanding Beginning balance, value Stockholders' Equity Attributable to Parent Common shares outstanding, beginning balance Shares, Outstanding Net income Net Income (Loss) Attributable to Parent Dividends declared on preferred stock Dividends, Preferred Stock Net income available to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Dividends declared on common stock Dividends, Common Stock Tax withholdings related to net stock settlements (in shares) Shares Paid for Tax Withholding for Share Based Compensation Tax withholdings related to net stock settlements Adjustments Related to Tax Withholding for Share-based Compensation Repurchase of common shares (in shares) Stock Repurchased During Period, Shares Repurchase of common shares Stock Repurchased During Period, Value Stock-based compensation, net (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Stock-based compensation, net Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Preferred shares outstanding, ending balance Ending balance, value Common shares outstanding, ending balance 10-year Mid-Market Swap Rate 10-year Mid-Market Swap Rate [Member] 10-year Mid-Market Swap Rate [Member] Lender Name [Axis] Lender Name [Axis] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Societe Generale And Barclays Bank PLC Societe Generale And Barclays Bank PLC [Member] Societe Generale And Barclays Bank PLC [Member] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Discontinued Operations, Disposed of by Sale Discontinued Operations, Disposed of by Sale [Member] CMBS Loans CMBS Loans [Member] CMBS Loans [Member] Non-Recourse CMBS Loan Agreement Non-Recourse CMBS Loan Agreement [Member] Non-Recourse CMBS Loan Agreement [Member] CMBS Commercial Mortgage Backed Securities - Fixed-Rate [Member] Commercial Mortgage Backed Securities - Fixed-Rate [Member] Loans Payable Loans Payable [Member] Number of loans secured by mortgage on leased properties and related assets Debt Instrument, Number of Loans, Secured by Mortgage on Leased Properties and Related Assets Debt Instrument, Number of Loans, Secured by Mortgage on Leased Properties and Related Assets Number of loans in default Debt Instrument, Debt Default, Number of loans in default Debt Instrument, Debt Default, Number of Loans in Default Weighted average stated interest rate, excluding defaulted loans Debt Instrument, Debt Default, Weighted Average Stated Interest Rate, Percent Debt Instrument, Debt Default, Weighted Average Stated Interest Rate, Percent Number of properties securing borrowings Debt Instrument, Number of Properties Securing Borrowings Debt Instrument, Number of Properties Securing Borrowings Proceeds from issuance of debt Proceeds from Issuance of Debt Number of properties securing loans Debt Instrument, Collateral for Secured Borrowings, Number of Properties Debt Instrument, Collateral for Secured Borrowings, Number of Properties Default interest rate Debt Instrument, Debt Default, Percentage Debt Instrument, Debt Default, Percentage Debt default amount Debt Instrument, Debt Default, Amount Capitalized interest Interest Costs Capitalized Master Trust 2014 notes Master Trust 2013 notes Number of securitization trusts within program Number of Securitization Trusts within Program Number of Securitization Trusts within Program Debt issued by, number of subsidiaries Number Of Subsidiaries Number Of Subsidiaries Income Per Share and Partnership Unit Earnings Per Share [Text Block] Line of Credit Facility [Table] Line of Credit Facility [Table] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Deferred Costs And Other Assets Deferred Charges And Other Assets [Member] Deferred Charges And Other Assets [Member] Revolving Credit Facility Revolving Credit Facility [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Line of credit facility, accordion feature, increase limit Line Of Credit Facility, Accordion Feature, Increase Limit Line Of Credit Facility, Accordion Feature, Increase Limit Commitment fee Line of Credit Facility, Commitment Fee Percentage Unamortized deferred financing costs Deferred Costs Line of credit facility, remaining borrowing capacity Accounting Policies [Abstract] Basis of Accounting Basis of Accounting, Policy [Policy Text Block] Consolidation Consolidation, Policy [Policy Text Block] Special Purpose Entities Consolidation, Variable Interest Entity, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Segment Reporting Segment Reporting, Policy [Policy Text Block] Allowance for Doubtful Accounts Provision For Doubtful Accounts Policy [Policy Text Block] Provision For Doubtful Accounts. Cash, Cash Equivalents and Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] New Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Schedule of Subsidiary of Limited Liability Company or Limited Partnership [Table] Schedule of Subsidiary of Limited Liability Company or Limited Partnership [Table] Partner Type [Axis] Partner Type [Axis] Partner Type of Partners' Capital Account, Name [Domain] Partner Type of Partners' Capital Account, Name [Domain] General Partner General Partner [Member] Limited Partner Limited Partner [Member] Subsidiary of Limited Liability Company or Limited Partnership [Line Items] Subsidiary of Limited Liability Company or Limited Partnership [Line Items] Ownership of operating partnership Percentage Of Ownership Percentage Of Ownership Transaction costs Professional Fees Restrictions on Cash and Cash Equivalents [Table] Restrictions on Cash and Cash Equivalents [Table] Restricted Cash and Cash Equivalents [Axis] Restricted Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Collateral deposits Collateral Deposits [Member] Collateral Deposits [Member] Tenant improvements, repairs, and leasing commissions Tenant Improvements, Repairs and Leasing Commissions [Member] Tenant Improvements, Repairs and Leasing Commissions [Member] Master Trust Release Master Trust Release [Member] Master Trust Release [Member] Liquidity reserve Liquidity Reserve [Member] Liquidity Reserve [Member] Other Other Restricted Cash and Escrow Deposits [Member] Other Restricted Cash and Escrow Deposits [Member] Restricted Cash and Cash Equivalents Items [Line Items] Restricted Cash and Cash Equivalents Items [Line Items] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Restricted cash Restricted Cash and Investments Total cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Stock repurchase program, remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Stock repurchased during period (in shares) Stock repurchased, weighted average price (in dollars per share) Treasury Stock Acquired, Average Cost Per Share Stock repurchase program, authorized amount Stock Repurchase Program, Authorized Amount Stock repurchase program, period in force Stock Repurchase Program, Period in Force Spin-off transaction, stock issuance ratio Stockholders' Equity Note, Spinoff Transaction, Share Issuance Ratio Stockholders' Equity Note, Spinoff Transaction, Share Issuance Ratio Reconciliation of the Numerator and Denominator Used in the Computation of Basic and Diluted Income Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Subsequent Events Subsequent Events [Text Block] Preferred stock, dividend per share (in dollars per share) Preferred Stock, Dividends Per Share, Declared Preferred stock, total amount Common stock, dividend per share (in dollars per share) Common Stock, Dividends, Per Share, Declared Preferred stock, total amount Revolving Credit Facility Revolving Credit Facilities [Member] Revolving Credit Facilities - Credit Facility and Line of Credit [Member] Convertible Notes Convertible Notes Payable [Member] Senior Unsecured Notes Senior Notes [Member] Weighted Average Weighted Average [Member] Weighted average effective interest rate Debt Instrument, Interest Rate, Effective Percentage Weighted average stated rate Weighted average maturity Schedule of Impaired Long-Lived Assets Held and Used [Table] Schedule of Impaired Long-Lived Assets Held and Used [Table] Valuation Technique [Axis] Valuation Technique [Axis] Valuation Technique [Domain] Valuation Technique [Domain] Fair Value Estimated Using Comparable Properties Fair Value Estimated Using Comparable Properties [Member] Fair Value Estimated Using Comparable Properties [Member] Fair Value Estimated Using Listing Price or Broker Opinion of Value Fair Value Estimated Using Listing Price Or Broker Opinion Of Value [Member] Fair Value Estimated Using Listing Price Or Broker Opinion Of Value [Member] Fair Value Estimated Using Signed Purchase and Sale Agreement Fair Value Estimated Using Signed Purchase And Sale Agreements [Member] Fair Value Estimated Using Signed Purchase And Sale Agreements [Member] Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Real Estate [Domain] Real Estate [Domain] Retail Retail Site [Member] Industrial Industrial Property [Member] Office Office Building [Member] Impaired Long-Lived Assets Held and Used [Line Items] Impaired Long-Lived Assets Held and Used [Line Items] Weighted average price (in USD per sqft) Fair Value Inputs, Weighted Average Price Per Square Foot Fair Value Inputs, Weighted Average Price Per Square Foot Square footage (in sqft) Fair Value Inputs, Square Feet Fair Value Inputs, Square Feet Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Carrying Value Reported Value Measurement [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Loans receivable, net Loans Receivable, Fair Value Disclosure Revolving Credit Facility Lines of Credit, Fair Value Disclosure Term Loan, net Loans Payable, Fair Value Disclosure Notes payable, net Notes Payable, Fair Value Disclosure Convertible notes, net Convertible Debt, Fair Value Disclosures Loans and Leases Receivable Disclosure [Table] Loans and Leases Receivable Disclosure [Table] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Mortgage Loans Mortgage Receivable [Member] Notes Receivable Notes Receivable [Member] Loans and Leases Receivable Disclosure [Line Items] Loans and Leases Receivable Disclosure [Line Items] Loans and leases receivable, gross Loans and Leases Receivable, before Fees, Gross Mortgage loans - premium, net of amortization Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums Allowance for loan losses Loans and Leases Receivable, Allowance Total loans receivable, net Loans and Leases Receivable, Net Amount Document and Entity Information [Abstract] Document and Entity Information [Abstract] Document Information [Table] Document Information [Table] Spirit Realty, L.P. Spirit Realty, L.P. [Member] Spirit Realty, L.P. [Member] Document Information [Line Items] Document Information [Line Items] Entity Registrant Name Entity Registrant Name Trading Symbol Trading Symbol Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Impaired long-lived assets held and used, properties Impaired Long-Lived Assets Held and Used, Properties Impaired Impaired Long-Lived Assets Held and Used, Properties Impaired Impaired long-lived assets held for sale, properties Impaired Long Lived Assets Held-For-Sale, Properties Impaired Impaired Long Lived Assets Held-For-Sale, Properties Impaired Income Statement [Abstract] Revenues: Revenues [Abstract] Rentals Operating Leases, Income Statement, Lease Revenue Interest income on loans receivable Interest Income On Loans Receivable Interest Income On Loans Receivable Earned income from direct financing leases Capital Leases, Income Statement, Direct Financing Lease Revenue Tenant reimbursement income Tenant Reimbursements Other income Interest Income, Other Total revenues Revenues Expenses: Costs and Expenses [Abstract] General and administrative General and Administrative Expense Property costs (including reimbursable) Cost of Property Repairs and Maintenance Real estate acquisition costs Acquisition Costs, Period Cost Interest Interest Expense Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Impairments Impairment Expense Impairment Expense Total expenses Costs and Expenses Income (loss) before other income/(expense) and income tax expense Operating Income (Loss) Other income (expense): Other Income and Expenses [Abstract] Total other income (expense) Nonoperating Income (Expense) Income (loss) before income tax expense Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Income (loss) before (loss) gain on disposition of assets Net income Total comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Dividends paid to preferred stockholders/ preferred distributions Net Income attributable to common stockholders/ net income after preferred distributions Net income attributable to the general partner Net Income (Loss) Allocated to General Partners Net income attributable to the limited partners Net Income (Loss) Allocated to Limited Partners Net income per partnership unit - basic (in USD per share) Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax Net income per partnership unit - diluted (in USD per share) Net Income (Loss), Net of Tax, Per Outstanding Limited Partnership Unit, Diluted Weighted average shares of common stock outstanding: Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] Basic (in shares) Diluted (in shares) Weighted average partnership units outstanding: Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax [Abstract] Basic (in shares) Weighted Average Limited Partnership Units Outstanding, Basic Diluted (in shares) Weighted Average Limited Partnership Units Outstanding, Diluted Dividends declared per common share/distributions declared per partnership unit issued (in USD per share) Operating Leases, Future Contractual Rent Receivable Operating Leases, Future Minimum Payments Receivable [Abstract] Remainder of 2018 Operating Leases, Future Minimum Payments Receivable, Current 2019 Operating Leases, Future Minimum Payments Receivable, in Two Years 2020 Operating Leases, Future Minimum Payments Receivable, in Three Years 2021 Operating Leases, Future Minimum Payments Receivable, in Four Years 2022 Operating Leases, Future Minimum Payments Receivable, in Five Years Thereafter Operating Leases, Future Minimum Payments Receivable, Thereafter Total future minimum rentals Operating Leases, Future Minimum Payments Receivable Investment [Table] Investment [Table] Shopko Shopko [Member] Shopko [Member] Operating Partnership and Several Banks Syndicate Operating Partnership And Several Banks Syndicate [Member] Operating Partnership And Several Banks Syndicate [Member] B-1 Term Loan B-1 Term Loan [Member] B-1 Term Loan [Member] Shopko Asset-Backed Lending Facility Shopko Asset-Backed Lending Facility [Member] Shopko Asset-Backed Lending Facility [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Texas Texas [Member] Texas [Member] Secured Debt Secured Debt [Member] Investment [Line Items] Investment [Line Items] Gross investment in real estate properties and loans Number of real estate properties Portfolio disbursement, number of states Number Of States Real Estate Properties Located Number Of States Real Estate Properties Located Investment in real estate properties Percentage Of Investment In Real Estate Properties Percentage Of Investment In Real Estate Properties Minimum of investment in real estate properties Minimum Percentage Of Investment In Real Estate Properties Over Which Investment To Be Disclosed Minimum Percentage Of Investment In Real Estate Properties Over Which Investment To Be Disclosed Number of other notes receivable Financing Receivable, Number of Financing Receivables Financing Receivable, Number of Financing Receivables Number of other notes receivable, secured Financing Receivable, Number of Financing Receivables, Secured Financing Receivable, Number of Financing Receivables, Secured Other notes receivable Financing Receivable, Net Number of other notes receivable, non-secured Financing Receivable, Number of Financing Receivables, Non-Secured Financing Receivable, Number of Financing Receivables, Non-Secured Periodic payment of principal Debt Instrument, Periodic Payment, Principal Current borrowing capacity Line of Credit Facility, Current Borrowing Capacity Amortization amount to rental revenue for capitalized leases Net Impact To Rental Revenues Due To Amortization Of Above And Below Market Leases Net Impact To Rental Revenues Due To Amortization Of Above And Below Market Leases Leases amortization expenses Intangible Lease Assets Amortization Expense Intangible Lease Assets Amortization Expense Impairment of properties classified as held for sale Impairment of Long-Lived Assets to be Disposed of Impairment of properties classified as held and used Impairment of Long-Lived Assets Held-for-use Statement of Cash Flows [Abstract] Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Impairments Asset Impairment Charges Amortization of deferred financing costs Amortization of Debt Issuance Costs Amortization of debt discounts Amortization of Debt Discount (Premium) Stock-based compensation expense Share-based Compensation (Gain) loss on debt extinguishment Gains (Losses) on Extinguishment of Debt, Continuing and Discontinued Operations Gains (Losses) on Extinguishment of Debt, Continuing and Discontinued Operations Loss (gain) on dispositions of real estate and other assets Gains (Losses) on Sales of Other Real Estate Non-cash revenue Other Noncash Income Bad debt expense and other Other Noncash Income (Expense) Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Deferred costs and other assets, net Increase (Decrease) in Accounts Receivable and Other Operating Assets Accounts payable, accrued expenses and other liabilities Increase Decrease In Accounts Payable Accrued Expenses And Other Liabilities Increase Decrease In Accounts Payable Accrued Expenses And Other Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Acquisitions of real estate Payments to Acquire and Develop Real Estate Capitalized real estate expenditures Increase (Decrease) in Lease Acquisition Costs Investments in loans receivable Payments to Acquire Loans Receivable Collections of principal on loans receivable and real estate assets under direct financing leases Proceeds from Collection of Loans Receivable Proceeds from dispositions of real estate and other assets Proceeds From Dispositions Of Real Estate And Other Assets Proceeds From Dispositions Of Real Estate And Other Assets Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Borrowings under Revolving Credit Facility Proceeds from Lines of Credit Repayments under Revolving Credit Facility Repayments of Lines of Credit Borrowings under mortgages and notes payable Proceeds From Nonrecourse Mortgage Debt And Notes Payable Proceeds From Nonrecourse Mortgage Debt And Notes Payable Repayments under mortgages and notes payable Repayments of Secured Debt Debt extinguishment costs Payment for Debt Extinguishment or Debt Prepayment Cost Deferred financing costs Payment Of Deferred Financing Costs And Call Premiums Payment Of Deferred Financing Costs And Call Premiums Repurchase of shares of common stock Payments for Repurchase of Common Stock Repurchase of partnership units Payments Related to Tax Withholding for Share-based Compensation Preferred stock dividends paid Payments of Ordinary Dividends, Preferred Stock and Preference Stock Common stock dividends paid Payments of Ordinary Dividends, Common Stock Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Net increase in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, cash equivalents and restricted cash, beginning of period Cash, cash equivalents and restricted cash, end of period Cash paid for interest Interest Paid Cash paid for income taxes Income Taxes Paid Supplemental Disclosures of Non-Cash Investing and Financing Activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Relief of debt in exchange for collateral assets Note Reduction Through Surrender to Lender Note Reduction Through Surrender to Lender Relief of debt through foreclosure of real estate properties Notes Reduction Reclass of residual value on expired deferred financing lease to operating asset Reclassification of Expired Deferred Financing Lease to Operating Asset Reclassification of Expired Deferred Financing Lease to Operating Asset Net real estate and other collateral assets sold or surrendered to lender Contribution of Property Accrued interest capitalized to principal Distributions declared and unpaid (including dividend rights) Dividends Payable Schedule of Cash, Cash Equivalents and Restricted Cash Restrictions on Cash and Cash Equivalents [Table Text Block] Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Nonrecurring Fair Value, Measurements, Nonrecurring [Member] Fair Value, Hierarchy [Axis} Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Long-lived assets held and used Long Lived Assets Held And Used Fair Value Disclosure Long Lived Assets Held And Used Fair Value Disclosure Long-lived assets held for sale Assets Held-for-sale, Long Lived, Fair Value Disclosure Statement of Financial Position [Abstract] Assets Assets [Abstract] Investments: Investments [Abstract] Real estate investments: Real Estate Investment Property, Net [Abstract] Land and improvements Land and Land Improvements Buildings and improvements Buildings and Improvements, Gross Total real estate investments Real Estate Investment Property Real Estate Investment Property Less: accumulated depreciation Real Estate Investment Property, Accumulated Depreciation Real estate investments, net Real Estate Investment Property, Net Loans receivable, net Intangible lease assets, net Real estate assets under direct financing leases, net Real estate assets held for sale, net Real Estate Held for Development and Sale, Net Net investments Investments Deferred costs and other assets, net Deferred Costs and Other Assets Goodwill Goodwill Total assets Assets Liabilities and stockholders’ equity/partners' capital Liabilities and Equity [Abstract] Liabilities: Liabilities [Abstract] Revolving Credit Facility Term Loan, net Loans Payable Senior Unsecured Notes, net Senior Notes Mortgages and notes payable, net Secured Debt Notes payable to Spirit Realty Capital, Inc., net Notes Payable, Related Parties Convertible Notes, net Convertible Notes Payable Intangible lease liabilities, net Below Market Leases Below Market Leases Accounts payable, accrued expenses and other liabilities Accounts Payable and Other Accrued Liabilities Total liabilities Liabilities Commitments and contingencies (see Note 6) Commitments and Contingencies Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock and paid in capital, $0.01 par value, 20,000,000 shares authorized: 6,900,000 shares issued and outstanding at both March 31, 2018 and December 31, 2017 Preferred Stock, Value, Issued Common stock, $0.01 par value, 750,000,000 shares authorized: 436,561,654 and 448,868,269 shares issued and outstanding at March 31, 2018 and December 31, 2017, respectively Common Stock, Value, Issued Capital in excess of par value Additional Paid in Capital Accumulated deficit Retained Earnings (Accumulated Deficit) Total stockholders’ equity Partners' capital: Partners' Capital, Including Portion Attributable to Noncontrolling Interest [Abstract] Partnership units Partners' Capital [Abstract] General partner's capital: 3,988,218 units issued and outstanding as of both March 31, 2018 and December 31, 2017 General Partners' Capital Account Limited partners' preferred capital: 6,900,000 issued and outstanding as of March 31, 2018 and December 31, 2017 Limited Partners' Preferred Capital Account Limited Partners' Preferred Capital Account Limited partners' capital: 432,573,436 and 444,880,051 units issued and outstanding as of March 31, 2018 and December 31, 2017, respectively Limited Partners' Common Capital Account Limited Partners' Common Capital Account Total partners' capital Partners' Capital Total liabilities and stockholders’ equity/partners' capital Liabilities and Equity Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Schedule Of Interest Expenses [Table] Schedule Of Interest Expenses [Table] Schedule Of Interest Expenses [Table] Term Loan Term Loan Payable Net [Member] Term Loan Payable Net [Member] Convertible Notes Convertible Debt [Member] Schedule Of Interest Expenses [Line Items] Schedule Of Interest Expenses [Line Items] Schedule Of Interest Expenses [Line Items] Interest expense Interest Expense, Debt Non-cash interest expense: Interest Expense, Debt [Abstract] Amortization of deferred financing costs Amortization of debt discount, net Total interest expense Facility fees Debt Instrument, Unused Borrowing Capacity, Fee Potentially dilutive shares, convertible debt Revenue producing capitalized expenditures Payments to Acquire Real Estate, Revenue Producing Investments Payments to Acquire Real Estate, Revenue Producing Investments Capitalized maintenance expenditures Capitalized Costs, Maintenance Costs Capitalized Costs, Maintenance Costs Accumulated depreciation and amortization associated with dispositions of real estate SEC Schedule III, Real Estate Accumulated Depreciation, Real Estate Sold Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Deed-In-Lieu Properties Deed-In-Lieu Properties [Member] Deed-In-Lieu Properties [Member] Disposal Group, Held-for-use, Not Discontinued Operations Disposal Group, Held-for-use, Not Discontinued Operations [Member] Disposal Group, Held-for-use, Not Discontinued Operations Disposal Group, Disposed of by Sale, Not Discontinued Operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Gain (loss) on disposal of assets for properties Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Deed-in-lieu properties disposed of Deed-in-lieu properties disposed of, amount Number of Properties Number of Real Estate Properties Held-for-sale [Roll Forward] Number of Real Estate Properties Held-for-sale [Roll Forward] Beginning Balance (in properties) Number Of Real Estate Properties Held For Sale Number of Real Estate Properties Held For Sale Transfers from real estate investments held and used (in properties) Number Of Real Estate Properties Held For Sale Transfers From Real Estate Investments Number Of Real Estate Properties Held For Sale Transfers From Real Estate Investments Sales (in properties) Number Of Real Estate Properties Held For Sale Sales During Period Number Of Real Estate Properties Held For Sale Sales During Period Transfers to real estate investments held and used (in properties) Number of Real Estate Properties Held for Sale, Transfers to Real Estate Investments Number of Real Estate Properties Held for Sale, Transfers to Real Estate Investments Ending Balance (in properties) Carrying Value Real Estate Assets Held-for-sale [Roll Forward] Real Estate Assets Held-for-sale [Roll Forward] Beginning Balance Real Estate Held-for-sale Transfers from real estate investments held and used Real Estate Held For Sale Transfers From Real Estate Investments Real Estate Held For Sale Transfers From Real Estate Investments Sales Real Estate Held For Sale Sales During Period Real Estate Held For Sale Sales During Period Transfers to real estate investments held and used Real Estate Held for Sale, Transfers to Real Estate Investments Real Estate Held for Sale, Transfers to Real Estate Investments Impairments Real Estate Held-for-sale, Impairments Real Estate Held For Sale, Impairments During Period Ending Balance Investments Investments in and Advances to Affiliates, Schedule of Investments [Text Block] Convertible Senior Notes Convertible Senior Notes Due 2019 Convertible Senior Notes Due 2019 [Member] Convertible Senior Notes Due 2019 [Member] Convertible Senior Notes Due 2021 Convertible Senior Notes Due 2021 [Member] Convertible Senior Notes Due 2021 [Member] Conversion rate Debt Instrument, Convertible, Conversion Ratio Conversion price (in USD per share) Debt Instrument, Convertible, Conversion Price Premium above public offering price Debt Instrument, Convertible, Premium Above Public Offering Price, Percent Debt Instrument, Convertible, Premium Above Public Offering Price, Percent Anti-dilutive cash dividends, exceeding (in USD per share) Debt Instrument, Covenant, Conversion Rate, Quarterly Dividend Threshold Debt Instrument, Covenant, Conversion Rate, Quarterly Dividend Threshold Debt discount, value of the embedded conversion premium Preferred stock, par value (in USD per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Common stock, par value per share (in USD per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding General partners' capital, units issued General Partners' Common Capital Account, Units Issued General Partners' Common Capital Account, Units Issued General partners' capital, units outstanding General Partners' Common Capital Account, Units Outstanding General Partners' Common Capital Account, Units Outstanding Limited partners' preferred capital, units issued Limited Partners' Preferred Capital Account, Units Issued Limited Partners' Preferred Capital Account, Units Issued Limited partners' preferred capital, units outstanding Limited Partners' Preferred Capital Account, Units Outstanding Limited Partners' Preferred Capital Account, Units Outstanding Limited partners' capital, units issued Limited Partners' Common Capital Account, Units Issued Limited Partners' Common Capital Account, Units Issued Limited partners' capital, units outstanding Limited Partners' Common Capital Account, Units Outstanding Limited Partners' Common Capital Account, Units Outstanding Retirement Benefits [Abstract] Incentive Award Plan Compensation and Employee Benefit Plans [Text Block] Statement of Partners' Capital [Abstract] Preferred Units by Name [Axis] Preferred Units by Name [Axis] Preferred Units, Class [Domain] Preferred Units, Class [Domain] Limited Partner Series A Preferred Units Limited Partner Series A Preferred Units [Member] Limited Partner Series A Preferred Units [Member] General Partner's Capital Limited Partners' Capital Increase (Decrease) in Partners' Capital [Roll Forward] Increase (Decrease) in Partners' Capital [Roll Forward] Partners' preferred units, beginning balance Partners' Preferred Capital Account, Units Partners' Preferred Capital Account, Units Beginning balance, value Partners' common units, beginning balance Partners' Common Capital Account, Units Partners' Common Capital Account, Units Partnership distributions declared on preferred/common units Partners' Capital Account, Distributions Net income after preferred distributions Tax withholdings related to net partnership unit settlements (in shares) Tax withholdings related to net partnership unit settlements Repurchase of partnership units (in shares) Partners' Capital Account, Units, Purchased Partners' Capital Account, Units, Purchased Repurchase of partnership units Partners' Capital, Units Purchased Partners' Capital, Units Purchased Stock-based compensation (in shares) Partners' Capital Account, Units, Unit-based Compensation Stock-based compensation Partners' Capital Account, Unit-based Compensation Partners' preferred units, ending balance Ending balance, value Partners' common units, ending balance Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Special Purpose Entity Special Purpose Entity [Member] Special Purpose Entity [Member] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Net assets Net liabilities Number of segments Number of Operating Segments Reserves for uncollectible amounts Allowance for Doubtful Accounts Receivable Accounts receivable Accounts Receivable, Gross Reserve for losses Allowance for Doubtful Rental Revenue Receivable Allowance for Doubtful Rental Revenue Receivable Deferred rental revenue receivables Accrued Rental Revenue Receivables Accrued Rental Revenue Receivables Provision for income taxes Current Federal Tax Expense (Benefit) Real estate and intangible asset impairment Impairment of Real Estate Write-off of lease intangibles, net Impairment of Leasehold Recovery of loans receivable, previously impaired Loan Receivable (Recovery) Impairment Loan Receivable (Recovery) Impairment Total impairment loss Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table] Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table] Sale of Stock [Axis] Sale of Stock [Axis] Sale of Stock [Domain] Sale of Stock [Domain] ATM Program, November 2016 ATM Program, November 2016 [Member] ATM Program, November 2016 [Member] Subsidiary, Sale of Stock [Line Items] Subsidiary, Sale of Stock [Line Items] Shares withheld for taxes Shares withheld for taxes, value Shares Paid for Tax Withholding for Share Based Compensation, Value Shares Paid for Tax Withholding for Share Based Compensation, Value Dividend rate Preferred Stock, Dividend Rate, Percentage Liquidation value (in dollars per share) Preferred Stock, Liquidation Preference Per Share Dividend rate, quarterly basis (in dollars per share) Preferred Stock, Dividend Rate, Per-Dollar-Amount, Quarterly Preferred Stock, Dividend Rate, Per-Dollar-Amount, Quarterly Dividend rate, annual basis (in dollars per share) Preferred Stock, Dividend Rate, Per-Dollar-Amount Dividends, preferred stock Issuance of common shares (in shares) Stock Issued During Period, Shares, New Issues Gross proceeds capacity remaining Common Stock, Value, Remaining Authorized Amount Common Stock, Value, Remaining Authorized Amount Stock repurchased, fees acquired Stock Repurchased During Period, Related Fees Stock Repurchased During Period, Related Fees Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Equity Award [Domain] Non-vested Shares of Restricted Stock Performance Shares Performance Shares [Member] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Executives Officers and Employees Certtain Directors, Named Executive Officers And Employees [Member] [Member] Certtain Directors, Named Executive Officers And Employees [Member] [Member] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] General and administrative expense General and Administrative Expense [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Grants in period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Deferred compensation expense Deferred Compensation Arrangement, Compensation Expense Deferred Compensation Arrangement, Compensation Expense Outstanding unvested shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Approved initial target grant (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Multiplier for shares granted Share-based Payment Arrangement by Share-based Payment Award, Shares Granted, Multiplier Share-based Payment Arrangement by Share-based Payment Award, Shares Granted, Multiplier Minimum required service period Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Dividend rights accrued Dividend Rights Payable Dividend Rights Payable Potential grants in period based on total shareholder return (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Potential Grants in Period Based on Total Shareholder Return Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Potential Grants in Period Based on Total Shareholder Return Stock-based compensation expense Allocated Share-based Compensation Expense Unamortized stock-based compensation expense Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Schedule of Revenue by Major Customers, by Reporting Segments [Table] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Customer [Axis] Customer [Axis] Customer [Domain] Customer [Domain] No Tenant Other Than Shopko No Tenant Other Than Shopko [Member] No Tenant Other Than Shopko [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Revenues Revenues [Member] Revenues [Member] Total Assets Assets, Total [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Revenue, Major Customer [Line Items] Revenue, Major Customer [Line Items] Number of tenants Number Of Tenants Number Of Tenants Concentration risk (or more) Concentration Risk, Percentage