Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Aug. 04, 2018	Jul. 29, 2017	Aug. 04, 2018	Jul. 29, 2017	Feb. 03, 2018
Income Taxes [Line Items]
Effective income tax rate	25.50%	38.00%	25.30%	36.80%
Corporate tax rate			21.00%
Net unrecognized tax benefits	$ 62,400,000	$ 40,400,000	$ 62,400,000	$ 40,400,000	$ 57,300,000
Accrued amounts for interest and penalties	13,500,000	$ 8,300,000	13,500,000	$ 8,300,000	$ 11,900,000
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	$ 22,000,000		$ 22,000,000