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Organization and Basis of Presentation - Narrative (Details)
$ in Thousands, shares in Millions
 3 Months Ended
Mar. 31, 2019
subsidiary
state
shares
Mar. 31, 2018
USD ($)
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]    
Number of states in which entity operates | state 26  
Number of wholly owned subsidiaries 36  
Operating expense reimbursements | $   $ 2,343
CBL & Associates Limited Partnership    
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]    
Number of wholly owned subsidiaries 2  
Ownership of the sole general partner in partnership (as a percent) 1.00%  
Limited partnership interest owned by CBL Holdings II, Inc. in the operating partnership (as a percent) 85.60%  
Combined ownership by the subsidiaries in operating partnership (as a percent) 86.60%  
Consolidated Properties    
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]    
Non-controlling limited partner interest ownership of CBL's Predecessor in the Operating Partnership (as a percent) 9.10%  
Non-controlling limited partner interest of third parties in Operating partnership (as a percent) 4.30%  
Common stock owned by CBL's Predecessor (shares) | shares 4.3  
Total combined effective interest of CBL's Predecessor in Operating Partnership (as a percent) 11.20%  
CBL Holdings | Consolidated Properties    
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]    
Ownership interest in qualified subsidiaries (as a percent) 100.00%