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Share-Based Compensation - Schedule of Stock Option Activity (Details) - Stock Options - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 12 Months Ended
Jan. 30, 2016
Jan. 31, 2015
Stock Options Outstanding and Exercisable    
Beginning balance (in shares) 16,725  
Granted (in shares) 0  
Expired/ forfeited (in shares) (404)  
Exercised/issued (in shares) (5,821)  
Ending balance (in shares) 10,500  
Weighted Average Exercise Price    
Beginning balance (in dollars per share) $ 53.04  
Granted (in dollars per share) 0.00  
Expired/forfeited (in dollars per share) 55.77  
Exercised/issued (in dollars per share) 52.07  
Ending balance (in dollars per share) $ 53.47  
Intrinsic value outstanding $ 199 $ 344
Number of options exercisable (in shares) 9,405 12,843
Exercise price exercisable (in dollars per share) $ 52.57 $ 52.02
Intrinsic value exercisable $ 187 $ 277