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Share-Based Compensation (Total Compensation Expense Included in SG&A and the Related Tax Benefits Recognized) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Oct. 28, 2017
Oct. 29, 2016
Oct. 28, 2017
Oct. 29, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Total share-based compensation expense $ 3 $ 6 $ 11 $ 17 [1]
Tax benefit recognized 1 2 3 5
Stock Option Plans [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Allocated share-based compensation expense 2 3 7 8
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Allocated share-based compensation expense $ 1 $ 3 $ 4 $ 9
[1] Amounts for the thirty-nine weeks ended October 29, 2016 have been revised from previously reported amounts to reflect the adoption of new accounting standards in the first quarter of 2017. For additional information, see the Recently Adopted Accounting Pronouncements note.