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Subordinated Debentures (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Feb. 01, 2020
Feb. 02, 2019
Note repurchase    
Outstanding amount $ 200,000 $ 200,000
Dillard's Capital Trust I    
Note repurchase    
Ownership interest percentage held in trust 100.00%  
Dillard's Capital Trust I | 7.5% capital securities due on August 1, 2038, subject to mandatory redemption    
Note repurchase    
Liquidation amount $ 200,000  
Dividend rate (as a percent) 7.50%  
Liquidation amount per security (in dollars per share) $ 25  
Dillard's Capital Trust I | 7.5% subordinated debentures due on August 1, 2038    
Note repurchase    
Outstanding amount $ 200,000  
Interest rate (as a percent) 7.50%  
Maximum number of consecutive quarters available for deferral of interest payment 5 years