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Summary of Significant Accounting Policies (Cash and Cash Equivalents) (Details) - USD ($)
$ in Millions
 12 Months Ended
Jan. 30, 2021
Feb. 01, 2020
Significant Accounting Policies [Line Items]    
Cash Equivalents $ 250.7 $ 200.1
Cash and Cash Equivalents [Member]    
Significant Accounting Policies [Line Items]    
Cash Equivalents $ 12.8 $ 8.9
Minimum [Member]    
Significant Accounting Policies [Line Items]    
Debit and credit card transaction processing period (hours) 24 hours  
Maximum [Member]    
Significant Accounting Policies [Line Items]    
Debit and credit card transaction processing period (hours) 48 hours