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Income Taxes - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
May 03, 2014
May 04, 2013
Feb. 01, 2014
Income Taxes [Line Items]      
Effective income tax rate 37.80% 38.10%  
Net unrecognized tax benefits $ 27.0 $ 124.8 $ 26.2
Interest and penalties expensed 8.5 38.8 8.1
Possible decrease in unrecognized tax benefits that would reduce the provision for taxes on earnings, minimum 0    
Possible decrease in unrecognized tax benefits that would reduce the provision for taxes on earnings, maximum $ 11.0