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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Revenue Recognition) (Details) | 12 Months Ended
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Dec. 31, 2017
Accounting Policies [Abstract] |
Tenant reimbursements period related to certain capital expenditures, minimum | 5 years
Tenant reimbursements period related to certain capital expenditures, maximum | 15 years

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- Definition Tenant Reimbursements Period Related to Certain Capital Expenditure Maximum, in Years + References No definition available. + Details
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Namespace Prefix: | cbl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Tenant Reimbursements Period Related to Certain Capital Expenditure Minimum, in Years + References No definition available. + Details
Name: | cbl_TenantReimbursementsPeriodRelatedToCertainCapitalExpenditureMinimumInYears
Namespace Prefix: | cbl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration