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Unconsolidated Affiliates - Joint Ventures (Details) - USD ($) |  | 1 Months Ended | 2 Months Ended | 6 Months Ended | 10 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 01, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | Feb. 29, 2020 | Nov. 30, 2019 | Oct. 31, 2019 | Sep. 30, 2019 | Aug. 31, 2019 | May 31, 2019 | Dec. 31, 2021 | Jun. 30, 2020 | Oct. 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Nov. 01, 2021 | Jul. 31, 2019 | Nov. 30, 2018
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-lived assets |  | $ 120,290,000 |  |  |  |  |  |  |  | $ 120,290,000 |  | $ 120,290,000 | $ 120,290,000 | $ 268,830,000 | $ 199,740,000 |  |  |
Gain on deconsolidation |  |  |  |  |  |  |  |  |  | 19,126,000 |  | 55,131,000 |  |  | 67,242,000 |  |  |
Secured loan |  | 395,395,000 |  |  |  |  |  |  |  | 395,395,000 |  | 395,000,000 | 395,395,000 |  |  | $ 455,000,000 |  |
Proceeds after factoring in its share of outstanding debt |  |  |  |  |  |  |  |  |  | 7,103,000 |  |  |  |  |  |  |  |
Fair value carrying amount |  | $ 2,092,298,000 |  |  |  |  |  |  |  | 2,092,298,000 |  |  | $ 2,092,298,000 |  |  | $ 133,000,000 |  |
Gain on sales of real estate assets |  |  |  |  |  |  |  |  |  | $ (3,000) |  | 12,187,000 |  | $ 4,696,000 | $ 16,274,000 |  |  |
Interest rate percentage |  | 10.00% |  |  |  |  |  |  |  | 10.00% |  |  | 10.00% |  |  |  |  |
Asheville Mall and Park Plaza |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-lived assets |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |
Gain on deconsolidation |  |  |  |  |  |  |  |  |  |  |  | $ 55,131,000 |  |  |  |  |  |
Springs at Port Orange |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured loan |  | $ 44,400,000 |  |  |  |  |  |  |  | $ 44,400,000 |  |  | $ 44,400,000 |  |  |  |  |
EastGate Mall CMBS, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-lived assets |  | 0 |  |  |  |  |  |  |  | $ 0 |  |  | 0 |  |  |  |  |
Gain on deconsolidation |  |  |  |  |  |  |  |  |  |  |  |  | $ 19,126,000 |  |  |  |  |
EastGate Storage, LLC, Hamilton Place Self Storage, LLC, Parkdale Self Storage, LLC and Self-Storage at Mid Rivers, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds |  | 42,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pay off total outstanding debt secured by property |  | 25,855,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount received after the proceeds used to pay off outstanding debt |  | $ 7,637,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ambassador Infrastructure, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan maturity date |  |  |  |  |  |  |  |  |  |  |  |  | Mar. 31, 2025 |  |  |  |  |
Loan agreement term |  |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |
Line of credit fixed interest rate |  | 3.00% |  |  |  |  |  |  |  | 3.00% |  |  | 3.00% |  |  |  |  |
Loan outstanding balance |  | $ 8,250,000 |  |  |  |  |  |  |  | $ 8,250,000 |  |  | $ 8,250,000 |  |  |  |  |
Amount paid in conjunction with modification |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,110,000 |  |  |  |  |
Debtors emerged from bankruptcy date |  |  |  |  |  |  |  |  |  |  |  |  | Nov. 01, 2021 |  |  |  |  |
Debt instrument, term |  |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |
Port Orange I, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan maturity date |  |  | Feb. 28, 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan agreement term |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan outstanding balance |  | 51,548,000 |  |  |  |  |  |  |  | 51,548,000 |  |  | $ 51,548,000 |  |  |  |  |
Debtors emerged from bankruptcy date |  |  | Nov. 01, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan term of extension option |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, term |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Port Orange I, LLC | CBL Associates Properties Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan outstanding balance |  | 25,774,000 |  |  |  |  |  |  |  | 25,774,000 |  |  | 25,774,000 |  |  |  |  |
Port Orange I, LLC | LIBOR in Year One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 2.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Port Orange I, LLC | LIBOR in Year Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 2.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Port Orange I, LLC | LIBOR in Year Three |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 2.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Port Orange I, LLC | LIBOR in Year Four |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 3.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Port Orange I, LLC | LIBOR in Year Five |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 3.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
West Melbourne I, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan maturity date |  |  | Feb. 28, 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan agreement term |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debtors emerged from bankruptcy date |  |  | Nov. 01, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan term of extension option |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans in default, aggregate outstanding balance |  | 52,910,000 |  |  |  |  |  |  |  | 52,910,000 |  |  | 52,910,000 |  |  |  |  |
Debt instrument, term |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
West Melbourne I, LLC | CBL Associates Properties Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans in default, aggregate outstanding balance |  | $ 26,454,000 |  |  |  |  |  |  |  | $ 26,454,000 |  |  | $ 26,454,000 |  |  |  |  |
West Melbourne I, LLC | LIBOR in Year One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 2.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
West Melbourne I, LLC | LIBOR in Year Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 2.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
West Melbourne I, LLC | LIBOR in Year Three |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 2.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
West Melbourne I, LLC | LIBOR in Year Four |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 3.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
West Melbourne I, LLC | LIBOR in Year Five |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 3.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
York Town Center Holding, LP | Subsequent Event | Nonrecourse |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan agreement term | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value carrying amount | $ 30,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 4.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, term | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Atlanta Outlet JV, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest in joint venture (as a percent) |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |
Amount |  |  |  | $ 4,680,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, maturity date |  |  |  | Nov. 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum guarantee (as a percent) |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of ownership in variable interest entity sold (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |
Proceeds from sale of land |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,778,000 |  |  |
Related debt as part of proceeds from sale of land |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11,440,000 |  |  |
Gain (loss) on investment/deconsolidation |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 56,067,000 |  |  |
Gain on sales of real estate assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 12,939,000 |  |  |
Proportion of ownership in variable interest entity sold (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |
Gain (loss) related to marking investment to fair value |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 43,128,000 |  |  |
Atlanta Outlet JV, LLC | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  | 2.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |
BI Development II, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership in variable interest entity (as a percent) |  |  |  |  |  |  |  |  |  |  | 20.00% |  |  |  |  |  |  |
BI Development, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership in variable interest entity (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  | 20.00% |  |  |  |  |
Bullseye, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership in variable interest entity (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  | 20.00% |  |  |  |  |
El Paso Outlet Center Holding, LLC and El Paso Outlet Outparcels, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest in joint venture (as a percent) |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |
Proportion of ownership in variable interest entity sold (as a percent) |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |
Proceeds from sale of land |  |  |  |  |  |  |  | $ 27,750,000 |  |  |  |  |  |  |  |  |  |
Related debt as part of proceeds from sale of land |  |  |  |  |  |  |  | 18,525,000 |  |  |  |  |  |  |  |  |  |
Gain (loss) on investment/deconsolidation |  |  |  |  |  |  |  | 11,174,000 |  |  |  |  |  |  |  |  |  |
Gain on sales of real estate assets |  |  |  |  |  |  |  | 3,884,000 |  |  |  |  |  |  |  |  |  |
Gain (loss) related to marking investment to fair value |  |  |  |  |  |  |  | $ 7,290,000 |  |  |  |  |  |  |  |  |  |
G&I VIII CBL Triangle LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest in joint venture (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 90.00% |
Real estate investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |
Hamilton Place Self Storage, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest in joint venture (as a percent) |  |  |  |  |  |  | 54.00% |  |  |  |  |  |  |  |  |  |  |
Amount |  |  |  |  |  |  | $ 7,002,000 |  |  |  |  |  |  |  |  |  |  |
Maximum guarantee (as a percent) |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |
Gain on sales of real estate assets |  |  |  |  |  |  | $ 187,000 |  |  |  |  |  |  |  |  |  |  |
Maximum guarantee, backup guaranty (as a percent) |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |
Hamilton Place Self Storage, LLC | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  | 2.75% |  |  |  |  |  |  |  |  |  |  |
Mall of South Carolina L.P. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount |  |  |  |  | $ 7,959,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, maturity date |  |  |  |  | Nov. 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Fixed Interest Rate |  |  |  |  | 5.05% |  |  |  |  |  |  |  |  |  |  |  |  |
Parkdale Self Storage, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest in joint venture (as a percent) |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |
Amount |  |  |  |  |  |  |  |  | $ 6,500,000 |  |  |  |  |  |  |  |  |
Debt instrument, maturity date |  |  |  |  |  |  |  |  | Jul. 31, 2024 |  |  |  |  |  |  |  |  |
Maximum guarantee (as a percent) |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |
Gain on sales of real estate assets |  |  |  |  |  |  |  |  | $ 433,000 |  |  |  |  |  |  |  |  |
Interest rate percentage |  |  |  |  |  |  |  |  | 5.25% |  |  |  |  |  |  |  |  |
Parkdale Self Storage, LLC | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  |  | 2.80% |  |  |  |  |  |  |  |  |
Vision-CBL Hamilton Place, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest in joint venture (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00%
Amount |  |  |  |  |  | $ 16,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, maturity date |  |  |  |  |  | Nov. 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Gain on sales of real estate assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,381,000 |  |  |
Vision-CBL Hamilton Place, LLC | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  | 2.45% |  |  |  |  |  |  |  |  |  |  |  |

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