Information about Stock Options Outstanding and Exercisable (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	May 04, 2013	Feb. 02, 2013
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	$ 35.50
Options Outstanding, Number of Shares	6,668	5,907
Options Outstanding, Weighted-Average Remaining Contractual Life	6 years 10 months 24 days
Options Outstanding, Weighted-Average Exercise Price	$ 22.44	$ 19.93
Options Exercisable, Number of Shares	4,418
Options Exercisable, Weighted-Average Exercise Price	$ 18.61
$9.85 - $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	1,988
Options Outstanding, Weighted-Average Remaining Contractual Life	6 years 4 months 10 days
Options Outstanding, Weighted-Average Exercise Price	$ 12.76
Options Exercisable, Number of Shares	1,988
Options Exercisable, Weighted-Average Exercise Price	$ 12.76
$15.74 - $ 23.42
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 15.74
Range of Exercise Prices, Upper Limit	$ 23.42
Options Outstanding, Number of Shares	1,763
Options Outstanding, Weighted-Average Remaining Contractual Life	6 years 9 months 26 days
Options Outstanding, Weighted-Average Exercise Price	$ 19.72
Options Exercisable, Number of Shares	1,295
Options Exercisable, Weighted-Average Exercise Price	$ 20.02
$23.63 - $ 30.92
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 23.63
Range of Exercise Prices, Upper Limit	$ 30.92
Options Outstanding, Number of Shares	1,782
Options Outstanding, Weighted-Average Remaining Contractual Life	5 years 7 months 28 days
Options Outstanding, Weighted-Average Exercise Price	$ 28.42
Options Exercisable, Number of Shares	1,135
Options Exercisable, Weighted-Average Exercise Price	$ 27.27
$31.79 - $35.50
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 31.79
Range of Exercise Prices, Upper Limit	$ 35.50
Options Outstanding, Number of Shares	1,135
Options Outstanding, Weighted-Average Remaining Contractual Life	9 years 10 months 24 days
Options Outstanding, Weighted-Average Exercise Price	$ 34.24