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Income Taxes - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
6 Months Ended 3 Months Ended 12 Months Ended
Jul. 30, 2011
Jul. 31, 2010
Apr. 30, 2011
BPW Acquisition Corporation
Jan. 29, 2010
BPW Acquisition Corporation
Income Taxes [Line Items]        
Effective income tax rate, including discrete items (2.80%) (109.70%)    
Increase (decrease) in unrecognized tax benefits     $ (20) $ 20