Supplemental Cash Flow Information [Abstract] Other Significant Noncash Transactions [Table] Other Significant Noncash Transactions [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Corporate Joint Venture Corporate Joint Venture [Member] Name of Property [Axis] Name of Property [Axis] Name of Property [Domain] Name of Property [Domain] Outlet Shoppes at Atlanta - Ridgewalk Outlet Shoppes at Atlanta - Ridgewalk [Member] Outlet Shoppes at Atlanta - Ridgewalk [Member] Other Significant Noncash Transactions [Line Items] Other Significant Noncash Transactions [Line Items] Accrued dividends and distributions payable Dividends Payable Additions to real estate assets accrued but not yet paid Additions to real estate assets accrued but not yet paid Future cash outflow to pay for real estate additions accrued but not yet paid. Conversion of Operating Partnership units for common stock Conversion of Stock, Amount Converted Decrease in real estate assets SEC Schedule III, Real Estate, Period Increase (Decrease) Decrease in mortgage and other indebtedness Mortgage Loans on Real Estate, Foreclosures Decrease in operating assets and liabilities Settlement of Mortgage Debt Obligation, Noncash, Increase (Decrease) in Operating Assets and Liabilities Settlement of Mortgage Debt Obligation, Noncash, Increase (Decrease) in Operating Assets and Liabilities Decrease in noncontrolling interest and joint venture interest Noncontrolling Interest, Decrease from Deconsolidation Decrease in operating assets and liabilities Increase (Decrease) in Operating Assets and Liabilities Increase (Decrease) in Operating Assets and Liabilities Equity Method Investments and Joint Ventures [Abstract] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Hammock Landing Phase I Hammock Landing Phase I [Member] Hammock Landing Phase I [Member] Hammock Landing Phase II Hammock Landing Phase II [Member] Hammock Landing Phase II [Member] The Pavilion at Port Orange The Pavilion at Port Orange [Member] The Pavilion at Port Orange [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR London Interbank Offered Rate (LIBOR) [Member] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Stated Interest Rate Debt Instrument, Interest Rate, Stated Percentage Amount Extended Mortgage Loans on Real Estate, New Mortgage Loans Noncontrolling Interest [Table] Ambassador Infrastructure, LLC Ambassador Infrastructure, LLC [Member] Ambassador Infrastructure, LLC [Member] EastGate Storage, LLC EastGate Storage, LLC [Member] EastGate Storage, LLC [Member] G&I VIII CBL Triangle LLC G&I VIII CBL Triangle LLC [Member] G&I VIII CBL Triangle LLC [Member] Shoppes at Eagle Point, LLC Shoppes At Eagle Point, LLC [Member] Shoppes At Eagle Point, LLC [Member] Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Investment in Real Estate Joint Ventures and Partnerships Real Estate Investments, Joint Ventures Maximum Risk of Loss Real Estate Investment, Maximum Loss Real Estate Investment, Maximum Loss Percentage of debt guaranteed Debt Instrument, Percentage Guaranteed Debt Instrument, Percentage Guaranteed Condensed combined financial statement information - unconsolidated affiliates [Table] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Parent Company Parent Company [Member] ASSETS Equity Method Investment, Summarized Financial Information, Assets [Abstract] Investment in real estate assets Equity Method Investment Real Estate Investment Property, at Cost Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) rental properties; and (6) other real estate investments that Equity Method Investment Real Estate Investment Property, at Cost Accumulated depreciation Equity Method Investment, Real Estate Investment Property, Accumulated Depreciation The cumulative amount of depreciation for real estate property held for investment purposes reported by an equity method investment of the entity. Real estate investment net, before development in process Equity Method Investment, Real Estate Investment Property Net, Before Development in Process The net book value of real estate property held for investment purposes EXCLUDING DEVELOPMENTS IN PROGRESS reported by an equity method investment of the entity. Developments in progress Equity Method Investment, Development in Process The current amount of expenditures for a real estate project that has not yet been completed reported by an equity method investment of the entity. Net investment in real estate assets Equity Method Investment, Real Estate Investment Property, Net Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments reported by an equity method investment of the entity. Other assets Equity Method Investment, Intangible Lease And Other Assets Sum of the carrying amounts of all intangible lease assets, as of the balance sheet date, net of accumulated amortization and miscellaneous other assets not included elsewhere in the Assets portion of the Balance Sheet reported by an equity method investment of the entity. Total assets Equity Method Investment, Summarized Financial Information, Assets LIABILITIES Equity Method Investment, Summarized Financial Information, Liabilities and Equity [Abstract] Mortgage and other indebtedness, net Equity Method Investment, Debt and Capital Lease Obligations Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations reported by an equity method investment of the entity. Other liabilities Equity Method Investment, Accounts Payable and Accrued Liabilities Equity Method Investment, Accounts Payable and Accrued Liabilities Total liabilities Equity Method Investment, Summarized Financial Information, Liabilities OWNERS' EQUITY Equity Method Investment Summarized Financial Information, Equity [Abstract] The Company Equity Method Investment, Summarized Financial Information, Equity Excluding Noncontrolling Interests Other investors Equity Method Investment, Summarized Financial Information, Noncontrolling Interest Total owners' equity Equity Method Investment Summarized Financial Information, Equity Total liabilities and owners' equity Equity Method Investment, Summarized Financial Information, Liabilities and Equity Equity Method Investment, Summarized Financial Information, Income Statement [Abstract] Equity Method Investment, Summarized Financial Information, Income Statement [Abstract] Total revenues Equity Method Investment, Summarized Financial Information, Revenue Depreciation and amortization Equity Method Investment Summarized Financial Information Depreciation And Amortization Expense The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets, reported by an equity method investment of the entity. Interest income Equity Method Investment, Summarized Financial Information, Interest Income Equity Method Investment, Summarized Financial Information, Interest Income Interest expense Equity Method Investment Summarized Financial Information Interest Expenses The cost of borrowed funds accounted for as interest that was charged against earnings during the period, reported by an equity method investment of the entity. Operating expenses Equity Method Investment Summarized Financial Information Other Operating Expenses Other operating expenses reported by an equity method investment of the entity. Income from continuing operations before gain on sales of real estate assets Equity Method Investment, Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest, Before Gain On Sale Of Real Estate Assets Equity Method Investment, Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest, Before Gain On Sale Of Real Estate Assets Gain on sales of real estate assets Equity Method Investment Summarized Financial Information Gains Losses On Sales Of Investment Real Estate The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes by the Company's equity method investment partners. Net income Equity Method Investment, Summarized Financial Information, Net Income (Loss) Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Wells Fargo - Facility A Unsecured Line of Credit 1 [Member] Unsecured Line of Credit 1 [Member] First Tennessee Unsecured Line of Credit, First Tennessee [Member] Unsecured Line of Credit, First Tennessee [Member] Wells Fargo - Facility B Unsecured Line of Credit 2 [Member] Unsecured Line of Credit 2 [Member] Unsecured lines of credit Unsecured lines of credit [Member] Information pertaining to the unsecured lines of credit. Wells Fargo Bank Wells Fargo Bank [Member] Wells Fargo Bank [Member] First Tennessee Bank First Tennessee Bank [Member] First Tennessee Bank [Member] Lender Name [Axis] Lender Name [Axis] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Letter of Credit Letter of Credit [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Total Capacity Line of Credit Facility, Maximum Borrowing Capacity Total Outstanding Long-term Debt, Percentage Bearing Variable Interest, Amount Line of credit, extension fee Line of Credit, Option Exercise, Fee Charged, Percent The percentage fee charged for exercising the extension option on the line of credit. Commitments and Contingencies Disclosure [Abstract] Environmental liability insurance, maximum coverage per incident (up to) Environmental Liability Insurance, Maximum Coverage Per Incident Environmental Liability Insurance, Maximum Coverage Per Incident Environmental liability insurance, annual coverage limit (up to) Environmental Liability Insurance, Annual Coverage Limit. Annual coverage limit provided by the insurance arrangement for environmental liability claims. Unconsolidated Affiliates and Noncontrolling Interests Equity Method Investments and Joint Ventures Disclosure [Text Block] Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] CBL & Associates Limited Partnership CBL And Associates Limited Partnership [Member] CBL& Associates Limited Partnership [Member] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Series D Preferred Stock Series D Preferred Stock [Member] Series E Preferred Stock Series E Preferred Stock [Member] Statement [Line Items] Statement [Line Items] Tenant receivables allowance for doubtful accounts Allowance for Doubtful Accounts, Premiums and Other Receivables Other receivables allowance for doubtful accounts Allowance for Doubtful Other Receivables, Current Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, dividend rate Preferred Stock, Dividend Rate, Percentage Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Fair Value Disclosures [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Limited Partners' Capital Account by Class [Axis] Limited Partners' Capital Account by Class [Axis] Limited Partners' Capital Account, Class [Domain] Limited Partners' Capital Account, Class [Domain] Unconsolidated Properties Noncontrolling Interest [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Number of entities - equity method of accounting Number of entities - equity method of accounting The total number of entities accounted for using the equity method of Accounting. Percentage of equity interest in real estate property Equity Method Investment, Ownership Percentage Number of joint venture entities Number of Joint Venture Entities Number of Joint Venture Entities Issuances of common units (in shares) Stock Issued During Period, Shares, New Issues Variable interest entity, number of entities Variable Interest Entity, Number of Entities Variable Interest Entity, Number of Entities Variable interest entity, ownership percentage Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage Operating Partnership Third Party Interests [Member] -- None. No documentation exists for this element. -- Other consolidated subsidiaries Other Consolidated Subsidiaries [Member] Other Consolidated Subsidiaries [Member] Noncontrolling interests Partners' Capital Attributable to Noncontrolling Interest Condensed combined financial statement information - unconsolidated affiliates Condensed combined financial statement information - unconsolidated affiliates [Table Text Block] Tabular disclosure of equity method investments in earnings of unconsolidated affiliates. Schedule of limited partners' capital account by class Schedule of Limited Partners' Capital Account by Class [Table Text Block] Schedule of variable interest entities Schedule of Variable Interest Entities [Table Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Consolidated properties Parent [Member] CBL & Associates Limited Partnership Subsidiaries [Member] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] Malls (mall) Number Of Regional Malls Open Air Centers Owned Number of regional malls/open air centers in which interest is owned as of the balance sheet date. Associated Centers (associated center) Number Of Associated Centers Owned Number of associated centers in which interest is owned as of the balance sheet date. Community Centers (community center) Number Of Community Centers Owned The number of community center properties in which interest is owned as of the balance sheet date Office Buildings (office building) Number Of Office Buildings Owned The number of office buildings in which interest is owned as of the balance sheet date. Total (property) Number of Real Estate Properties Number of mixed-use centers owned (mixed use center) Number of mixed-use centers owned Number of mixed-use centers owned Accounting Policies [Abstract] Consolidation, Variable Interest Entity Consolidation, Variable Interest Entity, Policy [Policy Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Contingencies Commitments and Contingencies, Policy [Policy Text Block] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Real Estate Property Ownership [Axis] Real Estate Property Ownership [Axis] Real Estate Properties [Domain] Real Estate Properties [Domain] Outlet Mall and Outparcel Sale Outlet Mall and Outparcel Sale [Member] Outlet Mall and Outparcel Sale [Member] Janesville Mall Janesville Mall [Member] Janesville Mall [Member] Acadiana Mall Acadiana Mall [Member] Acadiana Mall [Member] Hickory Point Hickory Point [Member] Hickory Point [Member] Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Real Estate [Domain] Real Estate [Domain] Malls Malls [Member] A reportable segment. 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] Loss on impairment Impairment of Real Estate Number of malls with impairment Number of Malls with Impairment Number of Malls with Impairment Fair Value Assets, Fair Value Disclosure, Nonrecurring Net sales price Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Percentage of total consolidated revenues Concentration Risk, Percentage Equity method investments, fair value disclosure Equity Method Investments, Fair Value Disclosure Fair value assumptions, expected term Fair Value Assumptions, Expected Term Fair value inputs, cap rate Fair Value Inputs, Cap Rate Fair value inputs, discount rate Fair Value Inputs, Discount Rate Statement of Stockholders' Equity [Abstract] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-16 Accounting Standards Update 2016-16 [Member] Accounting Standard Update 2014-09 and Accounting Standard Update 2017-05 Accounting Standard Update 2014-09 and Accounting Standard Update 2017-05 [Member] Accounting Standard Update 2014-09 and Accounting Standard Update 2017-05 [Member] Temporary Equity [Axis] Temporary Equity [Axis] Temporary Equity [Domain] Temporary Equity [Domain] -- None. No documentation exists for this element. -- Redeemable Noncontrolling Interests Redeemable Noncontrolling Partnership Interests [Member] -- None. No documentation exists for this element. -- Redeemable Common Units Redeemable Common Units [Member] Redeemable Common Units [Member] Preferred Stock Preferred Stock [Member] Common Stock Common Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Dividends in Excess of Cumulative Earnings Accumulated Distributions in Excess of Net Income [Member] Total Shareholders' Equity/Partners' Capital Noncontrolling Interests Partner Capital Components [Axis] Partner Capital Components [Axis] Partner Capital Components [Domain] Partner Capital Components [Domain] Preferred Units Preferred Units [Member] Preferred Units [Member] Common Units Common Units [Member] Common Units [Member] General Partner General Partner [Member] Limited Partners Limited Partner [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Balance, redeemable noncontrolling partnership interests Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount Beginning Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Beginning balance, units (in shares) Partners' Capital Account, Units Beginning balance Partners' Capital, Including Portion Attributable to Noncontrolling Interest Net income Net Income (Loss) Excluding Amount Recognized In Temporary Equity Net Income (Loss) Excluding Amount Recognized In Temporary Equity Cumulative effect of accounting change Cumulative Effect of New Accounting Principle in Period of Adoption Dividends/Distributions declared - common stock/units Dividends, Common Stock Dividends/Distributions declared - preferred stock/units Dividends, Preferred Stock Issuance of common stock and restricted common stock Stock Issued During Period, Value, Common Stock and Restricted Stock Award, Gross Stock Issued During Period, Value, Common Stock and Restricted Stock Award, Gross Conversion of 915,338 Operating Partnership common units into shares of common stock Stock Issued During Period, Value, Conversion of Units Cancellation of restricted common stock/units Stock Issued During Period, Value, Restricted Stock Award, Forfeitures Performance stock units Adjustments to Additional Paid in Capital, Share-based Compensation, Other Long-term Incentive Plans, Requisite Service Period Recognition Amortization of deferred compensation Amortization Of Deferred Compensation Amortization Of Deferred Compensation Adjustment for noncontrolling interests Adjustments to Additional Paid-in Capital, Noncontrolling Interest, Other Adjustments to Additional Paid-in Capital, Noncontrolling Interest, Other Adjustment to record redeemable noncontrolling interests at redemption value Noncontrolling Interest, Change in Redemption Value Deconsolidation of investment Contributions from noncontrolling interests Noncontrolling Interest, Increase from Subsidiary Equity Issuance Distributions to noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Issuances of common units Stock Issued During Period, Value, New Issues Cancellation of restricted common stock/units, units (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Allocation of partners' capital Partners' Capital Account, Exchanges and Conversions Ending Balance Ending balance, units (in shares) Ending Balance, redeemable noncontrolling partnership interests Ending balance Redeemable Noncontrolling Interests Increase (Decrease) in Temporary Equity [Roll Forward] Net income Temporary Equity, Net Income Distributions declared - common units Adjustment for noncontrolling interests Allocation of partners' capital Adjustment to record redeemable interests at redemption value Development, Malls (mall) Number of Mall Under Development Number of Mall Under Development Redevelopments, Malls (mall) Number of Malls Under Redevelopment Number of Malls Under Redevelopment Development, All Other (properties) Number Of Other Properties Under Development Number Of Other Properties Under Development Redevelopments, All Other (properties) Number Of Other Properties Under Redevelopment Number Of Other Properties Under Redevelopment Contingencies Commitments and Contingencies Disclosure [Text Block] Organization and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract] Mortgage and Other Notes Receivable [Table] Mortgage and Other Notes Receivable [Table] Mortgage and Other Notes Receivable [Table] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Mortgages Mortgage Receivable [Member] Other Notes Receivable Notes Receivable [Member] Columbia Place Outparcel Columbia Place [Member] Columbia Place [Member] One Park Place One Park Place [Member] One Park Place [Member] Village Square Village Square, Houghton Lake and Cadillac [Member] Village Square, Houghton Lake and Cadillac [Member] Other Other Entities [Member] Other Entities [Member] ERMC ERMC [Member] ERMC [Member] Southwest Theaters Southwest Theaters [Member] Southwest Theaters [Member] The Promenade at Dlberville The Promenade at Dlberville [Member] The Promenade at Dlberville [Member] Mortgage and Other Notes Receivable [Line Items] Mortgage and Other Notes Receivable [Line Items] Mortgage and Other Notes Receivable [Line Items] Percentage of assignment of the partnership interest Percentage of assignment of the partnership interest Percentage of assignment of the partnership interest in the real estate. Interest Rate Mortgage Loans on Real Estate, Interest Rate Balance Financing Receivable, Net Share-based Compensation [Abstract] Summary of company stock award Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block] Assumptions used in the Monte Carlo simulation pricing model Schedule of Share-based Payment Award, Equity Instruments Other Than Options, Valuation Assumptions [Table Text Block] Schedule of Share-based Payment Award, Equity Instruments Other Than Options, Valuation Assumptions [Table Text Block] Mortgage and Other Notes Receivable Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Recent Accounting Pronouncements Description of New Accounting Pronouncements Not yet Adopted [Text Block] Schedule of Guarantor Obligations [Table] Schedule of Guarantor Obligations [Table] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] West Melbourne I, LLC - Phase I West Melbourne I LLC - Phase I [Member] West Melbourne I LLC - Phase I [Member] West Melbourne I, LLC - Phase II West Melbourne I LLC - Phase II [Member] West Melbourne I LLC - Phase II [Member] Port Orange I, LLC Port Orange I LLC [Member] Joint venture investment accounted for using the equity method of accounting. York Town Center, LP York Town Center Lp [Member] Joint venture investment accounted for using the equity method of accounting. Guarantor Obligations [Line Items] Guarantor Obligations [Line Items] Company's Ownership Interest Outstanding Balance Long-term Construction Loan Percentage Guaranteed by the Operating Partnership Guarantor Obligations, Percentage Obligation of Construction Loan Percentage of third party construction loan guaranteed by the company. Maximum Guaranteed Amount Maximum guarantee obligation after loans partially paid down Company's maximum guaranteed amount after loans were partially paid down. Obligation recorded to reflect guaranty Guarantees, Fair Value Disclosure Guarantor obligations, guaranty reduction, percentage, once construction is complete Guarantor Obligations, Guaranty Reduction, Percentage, Once Construction Is Complete Guarantor Obligations, Guaranty Reduction, Percentage, Once Construction Is Complete Number of extension options available (extension option) Number Of Extension Options Available Number of extension options available. Debt instrument, option extension term Debt Instrument, Period Of Extension Option Debt Instrument, Period Of Extension Option Guarantor obligations, guaranty reduction percentage, once certain debt and operational metrics are met Guarantor Obligations, Guaranty Reduction Percentage, Once Certain Debt and Operational Metrics Are Met Guarantor Obligations, Guaranty Reduction Percentage, Once Certain Debt and Operational Metrics Are Met Maximum guaranteed amount of YTC's performance Guarantor Obligations, Maximum Exposure, Undiscounted Annual reductions to guarantors obligations Annual Reductions To Guarantors Obligations The annual reduction amount to the Guarantor's Obligations. Guaranteed minimum exposure amount Guaranteed Minimum Exposure Amount Minimum potential amount of future payments (undiscounted) the company could be required to make under the guarantee or each group of similar guarantees after reductions. Maximum guaranteed obligation Guaranteed Amount of the Outstanding Loan Based on Percentage Portion of the loan amount guaranteed by the company based on the guaranty percentage. Reimburse Obligations Guarantor Obligations Recoverable Represents amount recoverable by guarantor from third parties for amounts paid under the guaranty. Total amount outstanding on bonds Malpractice Loss Contingency, Letters of Credit and Surety Bonds Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Unsecured Debt Unsecured Debt [Member] Senior Unsecured Notes Senior Unsecured Notes [Member] Senior Unsecured Notes [Member] Senior Notes Due 2026 Senior Notes Due 2026 [Member] Senior Notes Due 2026 [Member] Senior Notes Due 2024 Senior Notes Due 2024 [Member] Senior Notes Due 2024 [Member] Unsecured term loans Unsecured Term Loan 1 [Member] Unsecured Term Loan 1 [Member] Non-recourse loans on operating properties Non Recourse Loans On Operating Properties [Member] Non recourse loans on operating properties. Recourse loans on operating properties Recourse Term Loans On Operating Properties [Member] Recourse term loans on operating properties. Principal amortization Principal Amortization [Member] Principal Amortization [Member] Long Term Debt Interest Rate [Axis] Long Term Debt Interest Rate [Axis] Debt with a stated rate of interest. Long Term Debt Interest Rate [Domain] Long Term Debt Interest Rate [Domain] Debt with a fixed rate of interest. Fixed Rate Interest Fixed Rate Interest [Member] Fixed Rate Interest [Member] Variable Rate Interest Variable Rate Interest Member [Member] Variable Rate Interest [Member] Unsecured Term Loan 2 Unsecured Term Loan 2 [Member] Unsecured Term Loan 2 - $228K Unsecured Term Loan 3 Unsecured Term Loan 3 [Member] Unsecured Term Loan 3 [Member] Operating property loan Operating Property Loan [Member] Operating Property Loan [Member] Unsecured Term Loan Unsecured Term Loan [Member] Unsecured Term Loan [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Forecast Scenario, Forecast [Member] Number of unsecured term loans (loan, credit loan) Number of Debt Instruments Number of Debt Instruments Loan agreement, basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Annual facility fee Line of Credit Facility, Commitment Fee Percentage Weighted-average interest rate Long-term Debt, Weighted Average Interest Rate, at Point in Time Debt instrument, face amount Debt Instrument, Face Amount Interest rate Debt Instrument, Interest Rate, Effective Percentage Debt instrument, default minimum Debt Instrument, Debt Default Threshold, Minimum Loan Amount Debt Instrument, Debt Default Threshold, Minimum Loan Amount Principal maturities in 2018 Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year Number of operating property loans (loan) Number of Operating Property Loans Number of Operating Property Loans Number of instruments extended Debt Instrument, Number of Instruments Extended Debt Instrument, Number of Instruments Extended Weighted-average maturity period Debt Instrument, Weighted Average Remaining Term to Maturity Debt Instrument, Weighted Average Remaining Term to Maturity Revenue from Contract with Customer [Abstract] Revenue, Initial Application Period Cumulative Effect Transition [Table] Revenue, Initial Application Period Cumulative Effect Transition [Table] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Domain] Initial Application Period Cumulative Effect Transition [Domain] Difference between Revenue Guidance in Effect before and after Topic 606 Difference between Revenue Guidance in Effect before and after Topic 606 [Member] Accounting Standards Update 2014-09 Accounting Standards Update 2014-09 [Member] Accounting Standards Update 2017-05, Joint Venture Impact Accounting Standards Update 2017-05, Joint Venture Impact [Member] Accounting Standards Update 2017-05, Joint Venture Impact [Member] Accounting Standards Update 2017-05, Unconsolidated Affiliate Impact Accounting Standards Update 2017-05, Unconsolidated Affiliate Impact [Member] Accounting Standards Update 2017-05, Unconsolidated Affiliate Impact [Member] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Dividends in excess of cumulative earnings Retained Earnings (Accumulated Deficit) Number of unconsolidated affiliates included in partial sale of real estate assets Number of Unconsolidated Affiliates Included in Partial Sale of Real Estate Assets Number of Unconsolidated Affiliates Included in Partial Sale of Real Estate Assets New accounting pronouncement or change in accounting principle, effect of change on operating results New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results Tenant reimbursements period related to certain capital expenditure minimum, in years Tenant Reimbursements Period Related to Certain Capital Expenditure Minimum, in Years Tenant Reimbursements Period Related to Certain Capital Expenditure Minimum, in Years Tenant reimbursements period related to certain capital expenditure maximum, in years Tenant Reimbursements Period Related to Certain Capital Expenditure Maximum, in Years Tenant Reimbursements Period Related to Certain Capital Expenditure Maximum, in Years Revenue, performance obligation, lease commission recognized upon lease execution, percentage Revenue, Performance Obligation, Lease Commission Recognized Upon Lease Execution, Percentage Revenue, Performance Obligation, Lease Commission Recognized Upon Lease Execution, Percentage Revenue, remaining performance obligation Revenue, Remaining Performance Obligation Earnings Per Share [Abstract] Earnings per Share and Earnings per Unit Earnings Per Share [Text Block] Income Statement [Abstract] REVENUES: Revenues [Abstract] Minimum rents Operating Leases, Income Statement, Minimum Lease Revenue Percentage rents Operating Leases, Income Statement, Percentage Revenue Other rents Other rents This element represents the amount of short term rents earned during the period from lessees based on the terms of contractual arrangements which are less than 90 days in duration. Tenant reimbursements Tenant Reimbursements Management, development and leasing fees Management Fees Revenue Other Other Real Estate Revenue Total revenues Revenues OPERATING EXPENSES: Operating Expenses [Abstract] Property operating Direct Costs of Leased and Rented Property or Equipment Depreciation and amortization Depreciation, Depletion and Amortization Real estate taxes Real Estate Tax Expense Maintenance and repairs Cost of Property Repairs and Maintenance General and administrative General and Administrative Expense Other Other General Expense Total operating expenses Operating Expenses Income from operations Operating Income (Loss) Interest and other income Investment Income, Net Interest expense Interest Expense Gain on extinguishment of debt Gain (Loss) on Extinguishment of Debt Income tax benefit Income Tax Expense (Benefit) Equity in earnings of unconsolidated affiliates Income (Loss) from Equity Method Investments Income (loss) from continuing operations before gain on sales of real estate assets Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest, Before Gain On Sale Of Real Estate Assets Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest, before gain on sale of real estate assets Gain on sales of real estate assets Gains (Losses) on Sales of Investment Real Estate Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net (income) loss attributable to noncontrolling interests in: Net Income (Loss) Attributable to Noncontrolling Interest [Abstract] Operating Partnership NetIncomeLossAttributableToNoncontrollingNoncontrollingInterestInOperatingPartnership Net Income Loss Attributable To Noncontrolling Interest In The Operating Partnership Other consolidated subsidiaries/Net (income) loss attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net income (loss) attributable to the Company/Operating Partnership Net Income (Loss) Attributable to Parent Preferred dividends/distributions to preferred unitholders Net income (loss) attributable to common shareholders/unitholders Net Income (Loss) Available to Common Stockholders, Basic Basic and diluted per share data attributable to common shareholders: Earnings Per Share, Basic and Diluted [Abstract] Net income (loss) attributable to common shareholders/unitholders (in dollars per share) Earnings Per Share, Basic and Diluted Weighted-average common and potential dilutive common shares/units outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic and Diluted Dividends declared per common share/unit (in dollars per share) Common Stock, Dividends, Per Share, Declared Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entities [Table] Entities [Table] Entity Information [Line Items] Entity Information [Line Items] Entity Registrant Name Entity Registrant Name 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 (in shares) Entity Common Stock, Shares Outstanding Revenues Revenue from Contract with Customer [Text Block] Business Combinations, Discontinued Operations and Disposal Groups [Abstract] [Abstract] Business Combinations, Discontinued Operations and Disposal Groups [Abstract] [Abstract] Dispositions Acquisitions and Discontinued Operations [Text Block] Acquisitions and Discontinued Operations [Text Block] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Equity Method Investments Equity Method Investments [Member] Balance as of January 1, 2018 Contract with Customer, Asset, Net Tenant openings Contract with Customer, Asset, Increase (Decrease) for Tenant Openings Contract with Customer, Asset, Increase (Decrease) for Tenant Openings Executed leases Contract with Customer, Asset, Increase (Decrease) for Executed Leases Contract with Customer, Asset, Increase (Decrease) for Executed Leases Balance as of March 31, 2018 Contract with Customer, Liability [Abstract] Contract with Customer, Liability [Abstract] Contract with customer, liability, increase (decrease) Contract with Customer, Liability, Increase (Decrease) Contract with Customer, Liability, Increase (Decrease) Contract assets Contract with customer, asset, settled in 2018 Contract with Customer, Asset, Amortization Expense, Remainder of Fiscal Year Contract with Customer, Asset, Amortization Expense, Remainder of Fiscal Year Contract with customer, asset, settled in 2019 Contract with Customer, Asset, Amortization Expense, Year One Contract with Customer, Asset, Amortization Expense, Year One Contract with customer, asset, settled in 2023 Contract with Customer, Asset, Amortization Expense, Year Five Contract with Customer, Asset, Amortization Expense, Year Five Contract with customer, liability Contract with Customer, Liability Revenue, performance obligation, lease commission recognized upon tenant opening, percentage Revenue, Performance Obligation, Lease Commission Recognized Upon Tenant Opening, Percentage Revenue, Performance Obligation, Lease Commission Recognized Upon Tenant Opening, Percentage Schedule of Properties Owned by Operating Partnership Schedule of Real Estate Properties [Table Text Block] Properties Under Development Properties Under Development [Table Text Block] Properties Under Development [Table Text Block] Share-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] 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] Equity Award [Domain] Equity Award [Domain] Restricted Stock Awards Restricted Stock [Member] Performance Stock Units Performance Shares [Member] Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Vested each year for the first two anniversaries after conclusion of performance period Share-based Compensation Award, Tranche Three [Member] Vested on date of grant Share-based Compensation Award, Tranche Four [Member] Share-based Compensation Award, Tranche Four [Member] Vested at conclusion of performance period Share-based Compensation Award, Tranche One [Member] Remaining percentage after performance period Share-based Compensation Award, Tranche Two [Member] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Chief Executive Officer Chief Executive Officer [Member] Officer Officer [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of shares authorized under plan (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Share-based compensation expense Allocated Share-based Compensation Expense Share-based compensation cost capitalized as part of real estate assets Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward] Nonvested, beginning of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Nonvested, end of period (in shares) Weighted-Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Weighted average grant date fair value, nonvested, beginning of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Weighted average grant date fair value, granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted average grant date fair value, vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Weighted average grant date fair value, forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Weighted average grant date fair value, nonvested, end of period (in dollars per share) Unrecognized compensation cost related to nonvested stock awards Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Compensation cost to be recognized over a weighted average period Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Performance period Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Award vesting rights, total stockholder return to the national association of real estate investment trusts retail index, percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Total Stockholder Return to the National Association of Real Estate Investment Trusts Retail Index, Percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Total Stockholder Return to the National Association of Real Estate Investment Trusts Retail Index, Percentage Award vesting rights, absolute total stockholder return metrics, percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Absolute Total Stockholder Return Metrics, Percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Absolute Total Stockholder Return Metrics, Percentage Number of shares authorized to be granted annually (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized to be Granted Annually Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized to be Granted Annually Vesting percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Number of annual installment for awards to vest (installment) Share-based Compensation, Vesting, Number of Annual Installments Share-based Compensation, Vesting, Number of Annual Installments Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected share price volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate ASSETS Assets [Abstract] Real estate assets: Real Estate Investment Property, Net [Abstract] Land Land Buildings and improvements Investment Building and Building Improvements Real estate investment property, at cost Real Estate Investment Property, at Cost Accumulated depreciation Real Estate Investment Property, Accumulated Depreciation Real estate investment property, net, before developments in progress Real Estate Investment Property Net, Before Development in Process The net book value of real estate property held for investment purposes EXCLUDING DEVELOPMENTS IN PROGRESS. Developments in progress Development in Process Net investment in real estate assets Real Estate Investment Property, Net Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Receivables: Accounts and Notes Receivable, Net [Abstract] Tenant, net of allowance for doubtful accounts of $2,062 and $2,011 in 2018 and 2017, respectively Accounts Receivable, Net Other, net of allowance for doubtful accounts of $838 in 2018 and 2017 Other Receivables Mortgage and other notes receivable Investments in unconsolidated affiliates Equity Method Investments Intangible lease assets and other assets Intangible Lease And Other Assets Sum of the carrying amounts of all intangible lease assets, as of the balance sheet date, net of accumulated amortization and miscellaneous other assets not included elsewhere in the Assets portion of the Balance Sheet. Total assets Assets LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY Liabilities and Equity [Abstract] Mortgage and other indebtedness, net Debt and Capital Lease Obligations Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities Total liabilities Liabilities Commitments and contingencies (Note 7 and Note 11) Commitments and Contingencies Redeemable common units Shareholders' equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock, $.01 par value, 15,000,000 shares authorized: Partners' Capital, Number of Units, Par Value and Other Disclosures [Abstract] Preferred stock outstanding Preferred Stock, Value, Outstanding Common stock, $.01 par value, 350,000,000 shares authorized, 172,656,783 and 171,088,778 issued and outstanding in 2018 and 2017, respectively Common Stock, Value, Issued Partners' capital: Partners' Capital [Abstract] Preferred units Preferred Units, Preferred Partners' Capital Accounts General partner General Partners' Capital Account Limited partners Limited Partners' Capital Account Additional paid-in capital Additional Paid in Capital Total shareholders' equity Stockholders' Equity Attributable to Parent Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Total equity Total partners' capital Partners' Capital Total capital Total Liabilities, Redeemable Noncontrolling Interests and Equity Liabilities and Equity Variable interest entities, assets Variable Interest Entity, Consolidated, Carrying Amount, Assets Variable interest entities, liabilities Variable Interest Entity, Consolidated, Carrying Amount, Liabilities Noncash Investing and Financing Activities Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] Long-term debt, fair value Long-term Debt, Fair Value Schedule of New Accounting Pronouncements and Changes in Accounting Principles Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Noncash Investing and Financing Activities Cash Flow, Supplemental Disclosures [Text Block] Schedule of mortgage and other notes receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Kirkwood Mall Kirkwood Mall [Member] Kirkwood Mall, Bismark ND [Member] Interest Rate at Repayment Date Principal Balance Repaid Repayments of Long-term Debt Debt Covenants Actual vs Required [Axis] Debt Covenants Actual vs Required [Axis] Debt Covenants Actual vs Required [Axis] Debt Covenants Actual vs Required [Domain] Debt Covenants Actual vs Required [Domain] [Domain] for Debt Covenants Actual vs Required [Axis] Required Debt Covenant Requirement [Member] Debt Covenant Requirement [Member] Actual Debt Covenant Ratios Actual [Member] Debt Covenant Ratios Actual [Member] Unsecured Credit Facility and Term Loan Unsecured Credit Facility and Term Loan [Member] Unsecured Credit Facility and Term Loan [Member] Debt to total asset value Ratio of Total Debt to Total Assets Ratio of Total Debt to Total Assets Total unencumbered assets to unsecured debt Total Unencumbered Assets to Unsecured Debt Total Unencumbered Assets to Unsecured Debt Unencumbered NOI to unsecured interest expense Unencumbered NOI to Unsecured Interest Expense Unencumbered NOI to Unsecured Interest Expense EBITDA to fixed charges (debt service) EBITDA to Fixed Charged (Debt Service) EBITDA to Fixed Charged (Debt Service) Line of credit facility, remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Line of credit, current borrowing capacity Line of Credit Facility, Current Borrowing Capacity Accounting Standards Update 2016-18 Accounting Standards Update 2016-18 [Member] Number of states in which entity operates (state) Number of States in which Entity Operates Percentage ownership interest in qualified subsidiaries Noncontrolling Interest, Ownership Percentage by Parent Number of subsidiaries owned by the company (subsidiary) Number of subsidiaries owned by the company Number of subsidiaries owned by the company. Percentage ownership of the sole general partner in partnership Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest Percentage of limited partnership interest owned by CBL Holdings II, Inc. in the operating partnership Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest Combined percentage ownership by the subsidiaries in operating partnership Combined ownership percentage by subsidiaries in operating partnership The number of units or percentage investment held by one or more general or limited partners of the LLC or LP. Percentage of non controlling limited partner interest ownership of CBL's Predecessor in the Operating Partnership Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest Percentage of non controlling limited partner interest of third parties in Operating partnership Percentage of Noncontrolling limited partner interest owned in operating partnership by third parties The number of units or percentage investment held by the limited liability company or limited partnership in an operating partnership. Number of company's common stock owned by CBL's Predecessor (in shares) Limited Partners' Capital Account, Units Issued Total combined effective interest of CBL's Predecessor in Operating Partnership Percentage of effective interest in operating partnership Percentage of effective interest in Operating Partnership. Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Principal payments on mortgage and other indebtedness Repayments of Notes Payable Cash, cash equivalents, restricted cash and restricted cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Schedule of Dispositions Disposal Groups, Including Discontinued Operations [Table Text Block] Mortgage and Other Indebtedness, Net Debt Disclosure [Text Block] Issuances of common and restricted stock, shares (in shares) Conversion of stock, shares converted (in shares) Conversion of Stock, Shares Converted Cancellation of restricted common stock/units, shares (in shares) Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] All Other Other Segments [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Revenues Property operating expenses Property operating expenses, by segment Property operating expenses, disclosed by reporting segment, for the reporting period which includes the balance sheet line items: Property Operating, Real Estate Taxes and Maintenance and Repairs. Other expense Gain on sales of real estate assets Segment profit (loss) Segment profit (loss) Profit or loss, disclosed by segment and presented for the reporting period. Depreciation and amortization expense General and administrative expense Gain on extinguishment of debt Loss on impairment Equity in earnings of unconsolidated affiliates Net loss Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Capital expenditures Payments for Capital Improvements Total Assets Contract with Customer, Asset and Liability Contract with Customer, Asset and Liability [Table Text Block] Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Management, Development and Leasing Fees Management, Development and Leasing Fees [Member] Management, Development and Leasing Fees [Member] Marketing Marketing [Member] Marketing [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Leasing revenues Operating Leases, Income Statement, Lease Revenue Revenues from contracts with customers (ASC 606) Revenue from Contract with Customer, Excluding Assessed Tax Other revenues Other Revenue, Net New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Retained Earnings Retained Earnings [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Number of properties subject to ground leases Number of Properties Subject to Ground Leases Future contractual lease payments Operating Leases, Future Minimum Payments Due Segment Information Segment Reporting Disclosure [Text Block] Mortgages Mortgages [Member] Schedule of principal repayments [Abstract] Long-term Debt, Fiscal Year Maturity [Abstract] 2018 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 Mortgage and other indebtedness Long-term Debt, Gross Unamortized discounts Debt Instrument, Unamortized Discount (Premium), Net Unamortized deferred financing costs Debt Issuance Costs, Net Total mortgage and other indebtedness, net Long-term Debt Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] Gulf Coast Town Center - Phase III Gulf Coast Town Center - Phase III [Member] Gulf Coast Town Center - Phase III [Member] Outparcel Sale Outparcel Sale, 2 [Member] Outparcel Sale, 2 [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] Sales Price, Gross Sales of Real Estate Sales Price, Net Proceeds from Sale of Real Estate Gain Gains (Losses) On Sales Of Investment Real Estate Excluding Sales And Foreclosures Gains (losses) on sales of investment real estate excluding sales and foreclosures Gain on sales of real estate assets Gains (Losses) on Sales of Other Real Estate Number of properties disposed of (outparcel) Number of Stores Disposed Number of Stores Disposed Information Regarding Assets Measured on a Nonrecurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Schedule of Impairment on Real Estate Properties Schedule of Impairment on Real Estate Properties [Table Text Block] Schedule of Impairment on Real Estate Properties [Table Text Block] Subsequent Event [Table] Subsequent Event [Table] Construction Loans Construction Loans [Member] CBL TC LLC CBL TC LLC [Member] CBL TC LLC [Member] [Member] Loans Secured by Hammock Landing and The Pavilion at Port Orange Loans Secured by Hammock Landing and The Pavilion at Port Orange [Member] Loans Secured by Hammock Landing and The Pavilion at Port Orange [Member] Outlet Shoppes at El Paso - Phase II Outlet Shoppes at El Paso - Phase II [Member] Outlet Shoppes at El Paso - Phase II [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Long-term debt Debt instrument, term Debt Instrument, Term Repayments of secured debt Repayments of Secured Debt Long-term construction loan Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income (loss) Adjustments to reconcile net income (loss) 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, Nonproduction Net amortization of deferred financing costs, debt premiums and discounts Amortization of Debt Issuance Costs and Discounts Net amortization of intangible lease assets and liabilities Amortization of above and below Market Leases Gain on sales of real estate assets Write-off of development projects Noncash Project Abandonment Costs Share-based compensation expense Share-based Compensation Gain on extinguishment of debt Extinguishment of Debt, Gain (Loss), Net of Tax Equity in earnings of unconsolidated affiliates Distributions of earnings from unconsolidated affiliates Proceeds from Equity Method Investment, Distribution Provision for doubtful accounts Provision for Doubtful Accounts Change in deferred tax accounts Deferred Income Tax Expense (Benefit) Changes in: Increase (Decrease) in Operating Capital [Abstract] Tenant and other receivables Increase (Decrease) in Accounts and Other Receivables Other assets Increase (Decrease) in Other Operating Assets Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Additions to real estate assets Payments to Acquire and Develop Real Estate Acquisitions of real estate assets Payments to Acquire Real Estate Proceeds from sales of real estate assets Proceeds from Sale of Real Estate Held-for-investment Payments received on mortgage and other notes receivable Proceeds from Sale and Collection of Mortgage Notes Receivable Additional investments in and advances to unconsolidated affiliates Net Difference of Investment in Unconsolidated Affiliates and the Equity of Unconsolidated Affiliates Net Difference of Investment in Unconsolidated Affiliates and the Equity of Unconsolidated Affiliates Distributions in excess of equity in earnings of unconsolidated affiliates Distributions In Excess Of Equity In Earnings Of Unconsolidated Affiliates This element represents distributions from equity method investments that constitute a return of investment, which are classified as investing activities. Changes in other assets Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from mortgage and other indebtedness Proceeds from Notes Payable Principal payments on mortgage and other indebtedness Additions to deferred financing costs Payments of Financing Costs Proceeds from issuances of common stock Proceeds from Issuance of Common Stock Contributions from noncontrolling interests Proceeds from Contributions from Affiliates Payment of tax withholdings for restricted stock awards Payments Related to Tax Withholding for Share-based Compensation Distributions to noncontrolling interests Payments of Distributions to Affiliates Dividends paid to holders of preferred stock Payments of Ordinary Dividends, Preferred Stock and Preference Stock Dividends paid to common shareholders Payments of Ordinary Dividends, Common Stock Net cash provided by (used in) financing activities NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of period CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of period Reconciliation from condensed consolidated statements of cash flows to condensed consolidated balance sheets: Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect [Abstract] Cash and cash equivalents Restricted cash Restricted Cash [Abstract] Restricted cash Restricted Cash Mortgage escrows Escrow Deposit CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of period SUPPLEMENTAL INFORMATION: Cash paid for interest, net of amounts capitalized Interest Paid, Net Senior Notes Due 2023 and 2024 Senior Notes Due 2023 and 2024 [Member] Senior Notes Due 2023 and 2024 [Member] Secured debt to total assets Debt Instrument, Secured Debt To Total Assets Ratio Secured Debt to Total Assets Consolidated income available for debt service to annual debt service charge Income Available for Debt Service to Debt Service Charge Income Available for Debt Service to Debt Service Charge Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Contract with customer, liability Revenue, remaining performance obligation, expected timing of satisfaction, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Senior Notes Due 2023 5.250% Senior Notes Due 2023 [Member] 5.250% Senior Notes Due 2023 [Member] Fixed-rate debt, Amount Long-term Debt, Percentage Bearing Fixed Interest, Amount Variable-rate debt, Amount Total fixed-rate and variable-rate debt Long Term Debt, Net Excluding Deferred Financing Costs Long Term Debt, Net Excluding Deferred Financing Costs Weighted- Average Interest Rate Unamortized debt discount Debt Instrument, Unamortized Discount Schedule of mortgage and other indebtedness Schedule of Long-term Debt Instruments [Table Text Block] Schedule of line of credit facilities Schedule of Line of Credit Facilities [Table Text Block] Schedule of covenant compliance Schedule of Covenant Compliance [Table Text Block] Schedule of Covenant Compliance [Table Text Block] Schedule of fixed rate loans Schedule of Fixed Rate Loans [Table Text Block] Schedule of Fixed Rate Loans [Table Text Block] Schedule of principal repayments Schedule of Maturities of Long-term Debt [Table Text Block] Schedule of guarantees Schedule of Loss Contingencies by Contingency [Table Text Block] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Long-lived assets Total Loss on Impairment Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Antidilutive securities excluded from the computation of EPS (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Interest Rate Treasury Rate Treasury Rate [Member] Treasury Rate [Member] Amount Debt instrument, increase in variable interest rate Debt Instrument, Interest Rate, Increase (Decrease) in Variable Rate Basis Debt Instrument, Interest Rate, Increase (Decrease) in Variable Rate Basis Notice required to redeem debt, term Notice Required to Redeem Debt, Term Notice Required to Redeem Debt, Term Derivative, basis spread on variable rate Derivative, Basis Spread on Variable Rate Information on Reportable Segments Schedule of Segment Reporting Information, by Segment [Table Text Block]