Share Repurchases - Additional Information (Detail) - USD ($)	3 Months Ended			6 Months Ended
	Jul. 29, 2017	Apr. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016	May 02, 2017	Feb. 21, 2017	Jan. 28, 2017
Equity Class Of Treasury Stock [Line Items]
Unpaid principal amount of notes payable outstanding for share repurchases	$ 19,390,000			$ 19,390,000				$ 19,390,000
$700 Million Repurchase Program [Member]
Equity Class Of Treasury Stock [Line Items]
Shares of common stock purchased under repurchase program, shares	12,400,000
Shares of common stock purchased at an average price per share under repurchase program	$ 56.60
Shares of common stock purchased under repurchase program	$ 700,000,000
$300 Million Repurchase Program
Equity Class Of Treasury Stock [Line Items]
Shares of common stock purchased under repurchase program, shares	0	7,800,000
Shares of common stock purchased at an average price per share under repurchase program		$ 38.24
Shares of common stock purchased under repurchase program		$ 300,000,000
Share Repurchases Under Equity Plans [Member]
Equity Class Of Treasury Stock [Line Items]
Shares of common stock purchased under repurchase program, shares	0		0	0	0
Unpaid principal amount of notes payable outstanding for share repurchases	$ 19,400,000			$ 19,400,000				19,400,000
Interest expense related to notes payable for share repurchases	300,000		$ 300,000	500,000	$ 500,000
Board of Directors [Member] | Maximum [Member] | $700 Million Repurchase Program [Member]
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program authorized amount						$ 700,000,000
Board of Directors [Member] | Maximum [Member] | $300 Million Repurchase Program
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program authorized amount							$ 300,000,000
Director [Member] | Share Repurchases Under Equity Plans [Member]
Equity Class Of Treasury Stock [Line Items]
Unpaid principal amount of notes payable outstanding for share repurchases	$ 15,500,000			$ 15,500,000				$ 15,500,000