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Derivative Instruments (Tables)
3 Months Ended
Apr. 30, 2011
Derivative Instruments  
Foreign Exchange Contracts - Balance Sheet Hedging Disclosure
     April 30,
2011
     January 29,
2011
     May 1,
2010
 
     (in millions)  

Other Long-term Liabilities

   $ 85       $ 57       $ 47   
Foreign Exchange Contracts - Cash Flow Hedging Disclosure
Interest Rate Cash Flow Hedges on Balance Sheet, Disclosure
     April 30,
2011
     January 29,
2011
 
     (in millions)  

Other Assets

   $ 5       $ 3