(Loss)/Earnings per Share (Computation of Basic and Diluted EPS) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Oct. 29, 2011
Oct. 30, 2010
Oct. 29, 2011
Oct. 30, 2010
(Loss)/Earnings per Share Disclosure        
Net (loss)/income $ (143) $ 44 $ (65) $ 118
Average common shares outstanding (basic shares) 213 236 219 236
Stock options, restricted stock awards and stock warrant   2   2
Average shares assuming dilution (diluted shares) 213 238 219 238
Basic $ (0.67) $ 0.19 $ (0.30) $ 0.50
Diluted $ (0.67) $ 0.19 $ (0.30) $ 0.50