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Share-Based Compensation (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
May 05, 2018
Apr. 29, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Proceeds from exercise of stock options   $ 9
Stock Option Plans [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value of options vested $ 8 $ 7
Restricted Stock and Units [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation cost $ 33  
Share-based compensation arrangement by share-based payment award, non-option equity instruments, outstanding, number 874,458 669,542
Fair value of awards $ 5 $ 13
Awards vesting period description Generally, awards fully vest after the passage of time, typically three years. However, RSU awards made in connection with the Company's performance-based long-term incentive program are earned after the attainment of certain performance metrics and vest after the passage of time.  
Awards granted [1] 635,000  
Performance Shares [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Awards granted 400,000  
Performance Shares [Member] | Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share Based Compensation Arrangement By Share Based Payment Award, Target Percentage of Equity Awards Earned Over Performance Period 200.00%  
Performance Shares [Member] | Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share Based Compensation Arrangement By Share Based Payment Award, Target Percentage of Equity Awards Earned Over Performance Period 0.00%  
Nonvested Stock Options [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation cost $ 8  
Unrecognized compensation cost related to nonvested stock options, weighted-average period expected to be recognized 1 year 8 months 12 days  
[1] Approximately 0.4 million performance-based RSUs were granted during the first quarter of 2018 and are included as granted in the table above. The number of performance-based RSUs that are ultimately earned may vary from 0% to 200% of target depending on the achievement relative to the Company's predefined financial performance targets