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Combined Guarantor Subsidiaries - Dispositions - Narrative (Details) - Guarantor Subsidiaries | 12 Months Ended
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Dec. 31, 2019 USD ($) outparcel | Dec. 31, 2018 USD ($) outparcel | Dec. 31, 2017 USD ($) outparcel
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |  |
Gain (loss) on sales of real estate assets | $ | $ 22,000 | $ 2,406,000 | $ 38,247,000
Number of outparcels sold | outparcel |  | 5 | 18
CBL Management |  |  |
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |  |
Gain (loss) on sales of real estate assets | $ | $ 28,894,000 |  |
Number of outparcels sold | outparcel | 13 |  |

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- Definition The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.14(d)) -URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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