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Share-Based Compensation Share-Based Compensation - Additional Information About Stock Option Activity (Details) (Stock Options [Member], USD $)
In Millions, unless otherwise specified
12 Months Ended
Feb. 02, 2013
Jan. 28, 2012
Jan. 29, 2011
Stock Options [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted-average fair value per share of stock options granted $ 6.35 $ 5.28 $ 5.57
Aggregate intrinsic value of stock options exercised (in millions) $ 94 $ 19 $ 19
Fair value of stock options vested (in millions) $ 15 $ 15 $ 15