XML 114 R94.htm IDEA: XBRL DOCUMENT
v3.21.1

SHAREHOLDERS' EQUITY AND PARTNERS' CAPITAL - Common Stock Repurchase Program (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 unitholder shares | Dec. 31, 2019 USD ($) unitholder shares | Dec. 31, 2018 USD ($) unitholder shares
Class Of Stock [Line Items] |  |  |
Value of redemption of units | $ |  | $ 96 | $ 2,246
Number of holders of common units who received cash for their units (unitholder) | unitholder |  | 1 | 2
Redeemable noncontrolling interest, units exercised for conversion (shares) |  | 72,592 | 526,510
Operating Partnership |  |  |
Class Of Stock [Line Items] |  |  |
Number of holders of common units who received cash for their units (unitholder) | unitholder | 31 | 2 | 1
Redeemable noncontrolling interest, units exercised for conversion (shares) | 20,956,110 | 611,847 | 915,338
Redeemable noncontrolling interest, shares issued upon exercise of common units (shares) | 20,956,110 | 611,847 | 915,338

X
- Definition Number of Holders of Common Units + References No definition available. + Details
Name: | cbl_NumberofHoldersofCommonUnits
Namespace Prefix: | cbl_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Redeemable noncontrolling interest shares issued upon exercise of common units. + References No definition available. + Details
Name: | cbl_RedeemableNoncontrollingInterestSharesIssuedUponExerciseOfCommonUnits
Namespace Prefix: | cbl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Redeemable Noncontrolling Interest, Units Exercised for Conversion + References No definition available. + Details
Name: | cbl_RedeemableNoncontrollingInterestUnitsExercisedforConversion
Namespace Prefix: | cbl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ClassOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_StockRepurchasedDuringPeriodValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=cbl_OperatingPartnershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |