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Contingencies (Guarantees) (Details) (USD $)	3 Months Ended		1 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2013	Aug. 31, 2014	Dec. 31, 2014
Guarantor Obligations [Line Items]
Obligation recorded to reflect guaranty	$ 1,397,000us-gaap_GuaranteesFairValueDisclosure	$ 1,397,000us-gaap_GuaranteesFairValueDisclosure			$ 1,397,000us-gaap_GuaranteesFairValueDisclosure
Malpractice Loss Contingency, Letters of Credit and Surety Bonds	21,010,000us-gaap_MalpracticeLossContingencyLettersOfCreditAndSuretyBonds	20,720,000us-gaap_MalpracticeLossContingencyLettersOfCreditAndSuretyBonds			20,720,000us-gaap_MalpracticeLossContingencyLettersOfCreditAndSuretyBonds
West Melbourne I, LLC - Phase I
Guarantor Obligations [Line Items]
Company's Ownership Interest	50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneILLCPhaseIMember
Outstanding Balance	40,051,000us-gaap_LongtermConstructionLoanCurrentAndNoncurrent / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneILLCPhaseIMember
Percentage Guaranteed by the Company	25.00%cbl_GuarantorsPercentageObligationForConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneILLCPhaseIMember
Maximum Guaranteed Amount	10,012,000cbl_MaximumGuaranteeObligationAfterLoansPartiallyPaidDown / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneILLCPhaseIMember
Obligation recorded to reflect guaranty	101,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneILLCPhaseIMember	101,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneILLCPhaseIMember			101,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneILLCPhaseIMember
West Melbourne I, LLC - Phase II
Guarantor Obligations [Line Items]
Company's Ownership Interest	50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneILLCPhaseIIMember
Outstanding Balance	15,556,000us-gaap_LongtermConstructionLoanCurrentAndNoncurrent / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneILLCPhaseIIMember
Maximum Guaranteed Amount	8,700,000cbl_MaximumGuaranteeObligationAfterLoansPartiallyPaidDown / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneILLCPhaseIIMember	8,700,000cbl_MaximumGuaranteeObligationAfterLoansPartiallyPaidDown / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneILLCPhaseIIMember
Obligation recorded to reflect guaranty	87,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneILLCPhaseIIMember	87,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneILLCPhaseIIMember			87,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneILLCPhaseIIMember
Number of extension options available	2cbl_NumberOfExtensionOptionsAvailable / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneILLCPhaseIIMember
Debt instrument, option extension term (in years)	1 year
Port Orange I, LLC
Guarantor Obligations [Line Items]
Company's Ownership Interest	50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_PortOrangeILlcMember
Outstanding Balance	60,526,000us-gaap_LongtermConstructionLoanCurrentAndNoncurrent / us-gaap_GuaranteeObligationsByNatureAxis = cbl_PortOrangeILlcMember
Percentage Guaranteed by the Company	25.00%cbl_GuarantorsPercentageObligationForConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_PortOrangeILlcMember
Maximum Guaranteed Amount	15,132,000cbl_MaximumGuaranteeObligationAfterLoansPartiallyPaidDown / us-gaap_GuaranteeObligationsByNatureAxis = cbl_PortOrangeILlcMember
Obligation recorded to reflect guaranty	153,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_PortOrangeILlcMember	153,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_PortOrangeILlcMember			153,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_PortOrangeILlcMember
JG Gulf Coast Town Center, LLC - Phase III
Guarantor Obligations [Line Items]
Company's Ownership Interest	50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_GulfCoastTownCenterPhaseIIIMember
Outstanding Balance	5,548,000us-gaap_LongtermConstructionLoanCurrentAndNoncurrent / us-gaap_GuaranteeObligationsByNatureAxis = cbl_GulfCoastTownCenterPhaseIIIMember
Percentage Guaranteed by the Company	100.00%cbl_GuarantorsPercentageObligationForConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_GulfCoastTownCenterPhaseIIIMember
Maximum Guaranteed Amount	5,548,000cbl_MaximumGuaranteeObligationAfterLoansPartiallyPaidDown / us-gaap_GuaranteeObligationsByNatureAxis = cbl_GulfCoastTownCenterPhaseIIIMember
Obligation recorded to reflect guaranty	0us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_GulfCoastTownCenterPhaseIIIMember	0us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_GulfCoastTownCenterPhaseIIIMember			0us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_GulfCoastTownCenterPhaseIIIMember
Fremaux Town Center JV, LLC - Phase I
Guarantor Obligations [Line Items]
Company's Ownership Interest	65.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIMember
Outstanding Balance	40,596,000us-gaap_LongtermConstructionLoanCurrentAndNoncurrent / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIMember
Percentage Guaranteed by the Company	50.00%cbl_GuarantorsPercentageObligationForConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIMember
Maximum Guaranteed Amount	21,023,000cbl_MaximumGuaranteeObligationAfterLoansPartiallyPaidDown / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIMember
Obligation recorded to reflect guaranty	236,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIMember	236,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIMember			236,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIMember
Loan guaranty, fee income percentage			1.00%cbl_LoanGuarantyFeeIncomePercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIMember
Debt Coverage Service Ratio for Construction Loan			130.00%cbl_DebtCoverageServiceRatioforConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIMember
Fremaux Town Center JV, LLC - Phase II
Guarantor Obligations [Line Items]
Company's Ownership Interest	65.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIIMember
Outstanding Balance	7,460,000us-gaap_LongtermConstructionLoanCurrentAndNoncurrent / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIIMember
Percentage Guaranteed by the Company	50.00%cbl_GuarantorsPercentageObligationForConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIIMember
Maximum Guaranteed Amount	16,050,000cbl_MaximumGuaranteeObligationAfterLoansPartiallyPaidDown / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIIMember
Obligation recorded to reflect guaranty	161,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIIMember	161,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIIMember			161,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIIMember
Loan guaranty, fee income percentage				1.00%cbl_LoanGuarantyFeeIncomePercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIIMember
Debt Coverage Service Ratio for Construction Loan				130.00%cbl_DebtCoverageServiceRatioforConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIIMember
Ambassador Town Center JV, LLC
Guarantor Obligations [Line Items]
Company's Ownership Interest	65.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorTownCenterJVLLCMember
Outstanding Balance	1,455,000us-gaap_LongtermConstructionLoanCurrentAndNoncurrent / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorTownCenterJVLLCMember
Percentage Guaranteed by the Company	100.00%cbl_GuarantorsPercentageObligationForConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorTownCenterJVLLCMember
Maximum Guaranteed Amount	48,000cbl_MaximumGuaranteeObligationAfterLoansPartiallyPaidDown / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorTownCenterJVLLCMember
Obligation recorded to reflect guaranty	482,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorTownCenterJVLLCMember	482,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorTownCenterJVLLCMember			482,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorTownCenterJVLLCMember
Loan guaranty, fee income percentage					1.00%cbl_LoanGuarantyFeeIncomePercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorTownCenterJVLLCMember
Ambassador Infrastructure, LLC
Guarantor Obligations [Line Items]
Company's Ownership Interest	65.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorInfrastructureLLCMember
Outstanding Balance	1,002,000us-gaap_LongtermConstructionLoanCurrentAndNoncurrent / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorInfrastructureLLCMember
Percentage Guaranteed by the Company	100.00%cbl_GuarantorsPercentageObligationForConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorInfrastructureLLCMember
Maximum Guaranteed Amount	12,000cbl_MaximumGuaranteeObligationAfterLoansPartiallyPaidDown / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorInfrastructureLLCMember
Obligation recorded to reflect guaranty	177,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorInfrastructureLLCMember	177,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorInfrastructureLLCMember			177,000us-gaap_GuaranteesFairValueDisclosure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorInfrastructureLLCMember
Loan guaranty, fee income percentage					1.00%cbl_LoanGuarantyFeeIncomePercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorInfrastructureLLCMember
West Melbourne I, upon payment of contractual rent
Guarantor Obligations [Line Items]
Percentage Guaranteed by the Company		25.00%cbl_GuarantorsPercentageObligationForConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_WestMelbourneIuponpaymentofcontractualrentMember
Fremaux Town Center Phase I, upon full payment of rent
Guarantor Obligations [Line Items]
Percentage Guaranteed by the Company			25.00%cbl_GuarantorsPercentageObligationForConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIuponfullpaymentofrentMember
Fremaux Town Center Phase I, after one year of completion
Guarantor Obligations [Line Items]
Percentage Guaranteed by the Company			15.00%cbl_GuarantorsPercentageObligationForConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIafteroneyearofcompletionMember
Fremaux Town Center JV, LLC
Guarantor Obligations [Line Items]
Number of extension options available	2cbl_NumberOfExtensionOptionsAvailable / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterJvLlcMember
Debt instrument, option extension term (in years)	1 year
Fremaux Town Center Phase II, upon completion
Guarantor Obligations [Line Items]
Percentage Guaranteed by the Company				25.00%cbl_GuarantorsPercentageObligationForConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIIuponcompletionMember
Fremaux Town Center Phase II, after one year of completion
Guarantor Obligations [Line Items]
Percentage Guaranteed by the Company				15.00%cbl_GuarantorsPercentageObligationForConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_FremauxTownCenterPhaseIIafteroneyearofcompletionMemberMember
Ambassador Town Center, upon completion
Guarantor Obligations [Line Items]
Guarantors Percentage Obligation for Construction Loan, Expected					50.00%cbl_GuarantorsPercentageObligationforConstructionLoanExpected / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorTownCenteruponcompletionMember
Ambassador Town Center, upon completion and attainment of certain debt service and operational metrics
Guarantor Obligations [Line Items]
Guarantors Percentage Obligation for Construction Loan, Expected					15.00%cbl_GuarantorsPercentageObligationforConstructionLoanExpected / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorTownCenteruponcompletionandattainmentofcertaindebtserviceandoperationalmetricsMember
Ambassador Town Center JV, LLC and Ambassador Infrastructure, LLC
Guarantor Obligations [Line Items]
Number of extension options available	2cbl_NumberOfExtensionOptionsAvailable / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorTownCenterJVLLCandAmbassadorInfrastructureLLCMember
Debt instrument, option extension term (in years)	1 year
Ambassador Infrastructure, following any calendar year in which PILOT payments received are $1,200 or more
Guarantor Obligations [Line Items]
Percentage Guaranteed by the Company					50.00%cbl_GuarantorsPercentageObligationForConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorInfrastructurefollowinganycalendaryearinwhichPILOTpaymentsreceivedare1200ormoreMember
PILOT Payment Threshold for Change in Guarantors Percentage					1,200,000cbl_PILOTPaymentThresholdforChangeinGuarantorsPercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorInfrastructurefollowinganycalendaryearinwhichPILOTpaymentsreceivedare1200ormoreMember
Ambassador Infrastructure, following any calendar year in which PILOT payments received are $1,400 or more
Guarantor Obligations [Line Items]
Percentage Guaranteed by the Company					20.00%cbl_GuarantorsPercentageObligationForConstructionLoan / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorInfrastructurefollowinganycalendaryearinwhichPILOTpaymentsreceivedare1400ormoreMember
PILOT Payment Threshold for Change in Guarantors Percentage					1,400,000cbl_PILOTPaymentThresholdforChangeinGuarantorsPercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_AmbassadorInfrastructurefollowinganycalendaryearinwhichPILOTpaymentsreceivedare1400ormoreMember
York Town Center, LP
Guarantor Obligations [Line Items]
Company's Ownership Interest	50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_YorkTownCenterLpMember
Guarantor Obligations, Maximum Exposure, Undiscounted	22,000,000us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_GuaranteeObligationsByNatureAxis = cbl_YorkTownCenterLpMember
Annual Reductions To Guarantors Obligations	800,000cbl_AnnualReductionsToGuarantorsObligations / us-gaap_GuaranteeObligationsByNatureAxis = cbl_YorkTownCenterLpMember
Guaranteed Minimum Exposure Amount	10,000,000cbl_GuaranteedMinimumExposureAmount / us-gaap_GuaranteeObligationsByNatureAxis = cbl_YorkTownCenterLpMember
Guaranteed Amount of the Outstanding Loan Based on Percentage	$ 15,600,000cbl_GuaranteedAmountOfOutstandingLoanBasedOnPercentage / us-gaap_GuaranteeObligationsByNatureAxis = cbl_YorkTownCenterLpMember
Reimburse Obligations (as a percent)	50.00%cbl_ReimburseObligations / us-gaap_GuaranteeObligationsByNatureAxis = cbl_YorkTownCenterLpMember

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- Definition

The annual reduction amount to the Guarantor's Obligations.

+ References

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- Definition

Debt Coverage Service Ratio for Construction Loan

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Debt Instrument, Period of Extension Option

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- Definition

Portion of the loan amount guaranteed by the company based on the guaranty percentage.

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- Definition

Minimum potential amount of future payments (undiscounted) the company could be required to make under the guarantee or each group of similar guarantees after reductions.

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- Definition

Percentage of third party construction loan guaranteed by the company.

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- Definition

Guarantors Percentage Obligation for Construction Loan, Expected

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- Definition

Loan Guaranty, Fee Income Percentage

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Company's maximum guaranteed amount after loans were partially paid down.

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Number of extension options available.

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- Definition

PILOT Payment Threshold for Change in Guarantors Percentage

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- Definition

Joint venture agreed to reimburse a percentage amount to the Guarantor for Fund Obligations.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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-SubTopic 10

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Fair value portion of guarantee, including, but not limited to, financial standby letter of credit, fair value guarantee, guarantee of collection of scheduled contractual cash flows from financial assets, and contracts that contingently require the guarantor to make payments or perform services.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 5

-Subparagraph (a)

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This element represents the current and noncurrent portions of a long-term real estate loan with an initial maturity beyond one year or beyond the normal operating cycle, if longer, to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project (generally one to seven years), usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Article 5



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-Name Accounting Standards Codification

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

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Amount of letters of credit and other surety bonds that are available for the future payment of malpractice claims.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 450

-Section 50

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