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Related Party Transactions (Details) - USD ($)
shares in Millions, $ in Millions
12 Months Ended
Feb. 01, 2020
Feb. 02, 2019
Feb. 03, 2018
Nov. 05, 2018
Schottenstein Affiliates [Abstract]        
Outstanding common shares owned (in hundredths) 16.00%      
Combined voting power of outstanding common shares (in hundredths) 52.00%      
Number of Class A Common Shares owned by Schottenstein Affiliates (in shares) 3.6      
Number of Class B Common Shares owned by Schottenstein Affiliates (in shares) 7.7      
Other Related Party Transactions [Abstract]        
Due to related parties, current $ 0.9 $ 1.0    
Management Service        
Other Related Party Transactions [Abstract]        
Due to related parties, current 0.3 2.4    
Royalty expense 18.2 2.4    
Schottenstein Affiliates        
Other Related Party Transactions [Abstract]        
Other purchases and services $ 6.0 $ 6.5 $ 4.6  
Designer Brands Inc. | ABG-Camuto, LLC        
Other Related Party Transactions [Abstract]        
Noncontrolling interest, ownership percentage by parent       40.00%