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Summary of Significant Accounting Policies - Segments and Concentration Risk (Details) - item
12 Months Ended
Feb. 03, 2018
Jan. 28, 2017
Jan. 30, 2016
Merchandise assortment by classification as a percentage of net sales      
Number of reporting units 1    
Accessories      
Merchandise assortment by classification as a percentage of net sales      
Concentration risk (as a percent) 32.00% 31.00% 30.00%
Ladies'      
Merchandise assortment by classification as a percentage of net sales      
Concentration risk (as a percent) 23.00% 24.00% 24.00%
Children's      
Merchandise assortment by classification as a percentage of net sales      
Concentration risk (as a percent) 23.00% 23.00% 25.00%
Men's      
Merchandise assortment by classification as a percentage of net sales      
Concentration risk (as a percent) 17.00% 17.00% 17.00%
Home      
Merchandise assortment by classification as a percentage of net sales      
Concentration risk (as a percent) 5.00% 5.00% 4.00%