Stockholders' Equity (Components) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended 3 Months Ended 6 Months Ended
Oct. 29, 2011
Oct. 30, 2010
Oct. 29, 2011
Oct. 30, 2010
Oct. 29, 2011
Common Stock [Member]
Oct. 29, 2011
Additional Paid-in Capital [Member]
Oct. 29, 2011
Reinvested Earnings [Member]
Oct. 29, 2011
Accumulated Other Comprehensive (Loss)/Income [Member]
Jul. 30, 2011
Common Stock Repurchase Program [Member]
Apr. 30, 2011
Common Stock Repurchase Program [Member]
Jul. 30, 2011
Common Stock Repurchase Program [Member]
Beginning Balance, Value     $ 5,460   $ 118 $ 3,925 $ 2,222 $ (805)      
Beginning Balance, Shares         237            
Net (loss)/income (143) 44 (65) 118     (65)        
Other comprehensive income (8) 46 60 146       60      
Dividends declared, common     (132)       (132)        
Stock warrant issued     50     50          
Common stock repurchased and retired, value     (900)   (12) (404) (484)   (113) (787) (900)
Common stock repurchased and retired, shares         (24)       (3) (21)  
Stock-based compensation, value     49   1 48          
Ending Balance, Value $ 4,522 $ 4,941 $ 4,522 $ 4,941 $ 107 $ 3,619 $ 1,541 $ (745)      
Ending Balance, Shares         213