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Accumulated Other Comprehensive Income (Loss) (Tables)
 3 Months Ended
Apr. 30, 2011
Accumulated Other Comprehensive Income (Loss)  
Composition of Accumulated Other Comprehensive Income (Loss)
(Amounts in millions)    Currency Translation
and Other		      Derivative
Instruments		     Minimum
Pension Liability		     Total  

Balances - February 1, 2011

    $ 1,226       $ 60      $ (640 )    $ 646   

Currency translation adjustment

      410         —          —          410   

Net change in fair value of derivatives

      —           (178 )      —          (178 ) 
                                 

Balances - April 30, 2011

    $ 1,636       $ (118 )    $ (640 )    $ 878