Stock-Based Compensation (Stock-Based Compensation Costs) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Apr. 28, 2012
Apr. 30, 2011
Total stock-based compensation cost $ 12 $ 13
Restricted Stock [Member]
   
Total stock-based compensation cost 8 6
Stock Options [Member]
   
Total stock-based compensation cost 4 7
Management Transition and Home Office and Stores Stock-Based Compensation [Member]
   
Excluded stock-based compensation recorded in restructuring and management transition $ 9