Real Estate and Other, Net (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Apr. 28, 2012
Apr. 30, 2011
Real Estate and Other, Net [Abstract]    
Real estate activities $ (8) $ (15)
Other 1 2
Total (income)/expense (7) (13)
REIT dividend income 3 2
Joint venture proportional share of earnings $ 3 $ 3