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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
Apr. 29, 2017
Apr. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Total share-based compensation expense $ 5 $ 5 [1]
Tax benefit recognized 1 1
Stock Option Plans [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Allocated share-based compensation expense 2 3
Restricted Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Allocated share-based compensation expense $ 3 $ 2
[1] Amounts for the three months ended April 30, 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.