Subsequent Event - Additional Information (Detail) - USD ($)		12 Months Ended
	Mar. 24, 2017	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015	Feb. 21, 2017
Subsequent Event [Line Items]
Shares of common stock purchased under repurchase program, shares		0	2,625	251,910
Shares of common stock purchased under repurchase program			$ 238,000	$ 16,575,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Shares of common stock purchased under repurchase program, shares	4,900,000
Shares of common stock purchased under repurchase program	$ 171,500,000
Board of Directors [Member] | Maximum [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Stock repurchase program authorized amount					$ 300,000,000