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Stock-Based Compensation (Narrative) (Details)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Feb. 02, 2019
USD ($)
Installment
$ / shares
shares
Feb. 03, 2018
USD ($)
Jan. 28, 2017
USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Authorized | shares 9.0    
Available for grant | shares 8.3    
Number of vesting installments | Installment 5    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value $ 16 $ 3 $ 2
Closing stock price | $ / shares $ 66.69    
Aggregate fair value of awards at the time of vesting $ 57 40 52
Total share-based compensation expense 87 $ 55 $ 44
Total unrecognized share-based compensation expense for al share-based payment plans $ 109    
Weighted average period, years 1 year 3 months 18 days    
Non Vested Stock Awards [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
General term of a elected director, years 5 years    
Vesting term, years 1 year    
After 2005 [Member] | Employee Stock Option [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Term of options granted, years 7 years    
Prior 2006 [Member] | Employee Stock Option [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Term of options granted, years 15 years    
Director [Member] | Employee Stock Option [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Term of options granted, years 10 years