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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Revenue Recognition) (Details)	12 Months Ended
	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

X

- Definition

Tenant Reimbursements Period Related to Certain Capital Expenditure Maximum, in Years

+ References

No definition available.

+ Details

Name:	cbl_TenantReimbursementsPeriodRelatedToCertainCapitalExpenditureMaximumInYears
Namespace Prefix:	cbl_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- 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

X

- References

No definition available.

+ Details

Name:	us-gaap_AccountingPoliciesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration