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Stock-Based Compensation (Narrative) (Details) - USD ($)
3 Months Ended
May 05, 2018
Apr. 29, 2017
Feb. 03, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Tax benefit related to stock-based compensation $ 4,900,000 $ 7,000,000  
Plan participant's annual percentage ceiling for ESPP (up to) 10.00%    
Plan participant's annual dollar amount ceiling for ESPP (up to) $ 25,000    
Purchase price for shares under the ESPP (as a percentage) 85.00%    
Discount rate under the ESPP (as a percentage) 15.00%    
Restricted stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Treasury shares purchased for tax withholding and available for reissuance (in shares) 583,228 576,813  
Unvested restricted stock (in shares) 5,052,000   5,483,000
Unamortized compensation expense $ 162,500,000 $ 144,600,000  
Unamortized compensation expense, remaining weighted-average period of recognition (in years) 2 years 2 months 8 days 2 years 4 months 16 days  
Minimum | Restricted stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted stock vesting period (in years) 3 years    
Minimum | Performance Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Requisite service period (in years) 2 years    
Maximum | Restricted stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted stock vesting period (in years) 5 years    
Maximum | Performance Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Requisite service period (in years) 3 years