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Quarterly Results (Parenthetical) (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Feb. 02, 2013
Jan. 28, 2012
Feb. 02, 2013
Jan. 28, 2012
Jan. 29, 2011
Quarterly Results Of Operations [Line Items]          
Impairment charges excluding goodwill $ 7 $ 5 $ 7 $ 5 $ 10
Impairment of assets $ 5   $ 5