Real Estate and Other, Net (Details) (USD $)
In Millions
3 Months Ended 6 Months Ended
Jul. 30, 2011
Jul. 31, 2010
Jul. 30, 2011
Jul. 31, 2010
Real Estate and Other, Net [Abstract]        
Real estate activities $ (7) $ (8) $ (22) $ (16)
Restructuring charges 23   32  
Other 1 1 3 3
Total expense/(income) $ 17 $ (7) $ 13 $ (13)