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Income Taxes - Additional Information (Detail) - USD ($)
 3 Months Ended 9 Months Ended
Oct. 31, 2015
Nov. 01, 2014
Oct. 31, 2015
Nov. 01, 2014
Jan. 31, 2015
Income Taxes [Line Items]          
Effective income tax rate 37.60% 38.00% 37.90% 37.80%  
Net unrecognized tax benefits $ 31,400,000 $ 29,300,000 $ 31,400,000 $ 29,300,000 $ 32,700,000
Accrued amounts for interest and penalties 6,800,000 $ 9,300,000 6,800,000 $ 9,300,000 $ 10,100,000
Minimum          
Income Taxes [Line Items]          
Possible decrease in unrecognized tax benefits that would reduce the provision for taxes on earnings 0   0    
Maximum          
Income Taxes [Line Items]          
Possible decrease in unrecognized tax benefits that would reduce the provision for taxes on earnings $ 11,400,000   $ 11,400,000