Stockholders' Equity (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
May 03, 2014
May 04, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
February 1, 2014, shares 304.6  
February 1, 2014 $ 3,087  
Net income/(loss) (352) (348)
Other comprehensive income/(loss) 10 30
Stock-based compensation 8  
May 3, 2014, shares 304.8 219.9
May 3, 2014 2,753  
Common Stock [Member]
    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
February 1, 2014, shares 304.6  
February 1, 2014 152  
Stock-based compensation, shares 0.2  
Stock-based compensation 0  
May 3, 2014, shares 304.8  
May 3, 2014 152  
Additional Paid-in Capital [Member]
    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
February 1, 2014 4,571  
Stock-based compensation 8  
May 3, 2014 4,579  
Reinvested Earnings/(Accumulated Deficit) [Member]
    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
February 1, 2014 (1,008)  
Net income/(loss) (352)  
May 3, 2014 (1,360)  
Accumulated Other Comprehensive Income/(Loss) [Member]
    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
February 1, 2014 (628)  
Other comprehensive income/(loss) 10  
May 3, 2014 $ (618)