Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Property and Equipment and Capitalized Software Costs (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Property and Equipment and Capitalized Software Costs (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 02, 2019
Feb. 03, 2018
Jan. 28, 2017
Buildings      
Property and Equipment      
Estimated useful lives of assets 30 years    
Leasehold improvements      
Property and Equipment      
Estimated useful lives of assets 10 years    
Fixtures and equipment      
Property and Equipment      
Estimated useful lives of assets 8 years    
Computer Equipment and software | Minimum      
Property and Equipment      
Estimated useful lives of assets 3 years    
Computer Equipment and software | Maximum      
Property and Equipment      
Estimated useful lives of assets 7 years    
Capitalized software      
Property and Equipment      
Unamortized capitalized software costs $ 96.3 $ 90.0  
Amortization expense of capitalized software costs $ 31.2 $ 29.1 $ 29.9