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Organization and Basis of Presentation (Summary of Interest Held in Properties) (Details) | Sep. 30, 2017 mall community_center
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Consolidated properties |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Development, Malls (mall) | mall | 0
Expansions, Malls (mall) | mall | 1
Redevelopments, Malls (mall) | mall | 1
Unconsolidated Properties |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Development, Community Centers (community center) | community_center | 1
Expansions, Community Centers (community center) | community_center | 0
Redevelopments, Community Centers (community center) | community_center | 0

X
- Definition Number of community center expansions in which interest is owned as of balance sheet date. + References No definition available. + Details
Name: | cbl_NumberOfCommunityCenterExpansions
Namespace Prefix: | cbl_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number Of Community Centers Under Development + References No definition available. + Details
Name: | cbl_NumberOfCommunityCentersUnderDevelopment
Namespace Prefix: | cbl_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number Of Community Centers Under Redevelopments + References No definition available. + Details
Name: | cbl_NumberOfCommunityCentersUnderRedevelopments
Namespace Prefix: | cbl_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Mall Under Development + References No definition available. + Details
Name: | cbl_NumberofMallUnderDevelopment
Namespace Prefix: | cbl_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Malls Under Expansion + References No definition available. + Details
Name: | cbl_NumberofMallsUnderExpansion
Namespace Prefix: | cbl_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Malls Under Redevelopment + References No definition available. + Details
Name: | cbl_NumberofMallsUnderRedevelopment
Namespace Prefix: | cbl_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_NoncontrollingInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |