Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Common Stock Repurchase Program) (Details)

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Stockholders' Equity (Common Stock Repurchase Program) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Jul. 30, 2011
Apr. 30, 2011
Jan. 28, 2012
Stock Repurchase Program, Authorized Amount   $ 900  
Stock Repurchased and Retired, Value 113 787 900
Stock Repurchased and Retired, Shares 3.0 21.0 24.0
Share Repurchase Program, Average Share Price     36.98
Common Stock [Member]
     
Stock Repurchased and Retired, Value     12
Stock Repurchased and Retired, Shares     24.4
Additional Paid-in Capital [Member]
     
Stock Repurchased and Retired, Value     404
Reinvested Earnings [Member]
     
Stock Repurchased and Retired, Value     $ 484