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Contingencies (Details) (USD $) | 3 Months Ended
--- | ---
Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract] |
Environmental liability insurance, maximum coverage per incident | $ 10,000,000 cbl_EnvironmentalLiabilityInsuranceMaximumCoveragePerIncident
Environmental liability insurance, annual coverage limit. | $ 50,000,000 cbl_EnvironmentalLiabilityInsuranceAnnualCoverageLimit.

X
- Definition Annual coverage limit provided by the insurance arrangement for environmental liability claims. + References No definition available. + Details
Name: | cbl_EnvironmentalLiabilityInsuranceAnnualCoverageLimit.
Namespace Prefix: | cbl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Environmental Liability Insurance, Maximum Coverage Per Incident + References No definition available. + Details
Name: | cbl_EnvironmentalLiabilityInsuranceMaximumCoveragePerIncident
Namespace Prefix: | cbl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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