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Stock-Based Compensation (Narrative) (Details)
$ in Millions
12 Months Ended
Feb. 02, 2019
USD ($)
plan
Feb. 03, 2018
USD ($)
Jan. 28, 2017
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Discount rate under the ESPP (in percentage) 15.00%    
Tax benefit related to stock-based compensation | $ $ 19.6 $ 29.5 $ 25.9
Stock Compensation Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of stock-based compensation plans | plan 1