Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Jul. 29, 2017	Jul. 29, 2017	Jul. 30, 2016	Jan. 28, 2017
Income Taxes [Line Items]
Effective income tax rate	38.00%	36.80%	38.50%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	0.40%	1.60%
Net unrecognized tax benefits	$ 40,400,000	$ 40,400,000	$ 36,200,000	$ 38,500,000
Accrued amounts for interest and penalties	8,300,000	8,300,000	$ 7,500,000	$ 8,000,000
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	$ 14,000,000	$ 14,000,000