Information about Stock Options Outstanding and Exercisable (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013	Jan. 28, 2012
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares	5,569	5,668	5,907	7,227
Options Outstanding, Weighted-Average Remaining Contractual Life	6 years 3 months 22 days
Options Outstanding, Weighted-Average Exercise Price	$ 25.89	$ 22.66	$ 19.93	$ 18.44
Options Exercisable, Number of Shares	3,759	3,495	3,593
Options Exercisable, Weighted-Average Exercise Price	$ 19.74	$ 18.02	$ 17.83
$9.85 to $15.10
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 9.85
Range of Exercise Prices, Upper Limit	$ 15.10
Options Outstanding, Number of Shares	1,466
Options Outstanding, Weighted-Average Remaining Contractual Life	4 years 7 months 17 days
Options Outstanding, Weighted-Average Exercise Price	$ 12.39
Options Exercisable, Number of Shares	1,466
Options Exercisable, Weighted-Average Exercise Price	$ 12.39
$18.80 to $24.76
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 18.80
Range of Exercise Prices, Upper Limit	$ 24.76
Options Outstanding, Number of Shares	1,453
Options Outstanding, Weighted-Average Remaining Contractual Life	5 years 11 days
Options Outstanding, Weighted-Average Exercise Price	$ 20.10
Options Exercisable, Number of Shares	1,453
Options Exercisable, Weighted-Average Exercise Price	$ 20.10
$25.19 to $34.27
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 25.19
Range of Exercise Prices, Upper Limit	$ 34.27
Options Outstanding, Number of Shares	1,896
Options Outstanding, Weighted-Average Remaining Contractual Life	7 years 5 months 12 days
Options Outstanding, Weighted-Average Exercise Price	$ 32.70
Options Exercisable, Number of Shares	828
Options Exercisable, Weighted-Average Exercise Price	$ 31.82
$34.42 to $56.35
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 34.42
Range of Exercise Prices, Upper Limit	$ 56.35
Options Outstanding, Number of Shares	754
Options Outstanding, Weighted-Average Remaining Contractual Life	9 years 1 month 24 days
Options Outstanding, Weighted-Average Exercise Price	$ 46.15
Options Exercisable, Number of Shares	12
Options Exercisable, Weighted-Average Exercise Price	$ 40.51