Information about Stock Options Outstanding and Exercisable (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
	Nov. 01, 2014	Feb. 01, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares	5,604	5,668
Options Outstanding, Weighted-Average Remaining Contractual Life	6 years 6 months 4 days
Options Outstanding, Weighted-Average Exercise Price	$ 25.69	$ 22.66
Options Exercisable, Number of Shares	3,798
Options Exercisable, Weighted-Average Exercise Price	$ 19.78
$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	1,470
Options Outstanding, Weighted-Average Remaining Contractual Life	4 years 10 months 13 days
Options Outstanding, Weighted-Average Exercise Price	$ 12.39
Options Exercisable, Number of Shares	1,470
Options Exercisable, Weighted-Average Exercise Price	$ 12.39
$18.80 to $24.75
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	$ 24.75
Options Outstanding, Number of Shares	1,460
Options Outstanding, Weighted-Average Remaining Contractual Life	5 years 3 months 7 days
Options Outstanding, Weighted-Average Exercise Price	$ 20.11
Options Exercisable, Number of Shares	1,460
Options Exercisable, Weighted-Average Exercise Price	$ 20.11
$24.76 to $34.24
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 24.76
Range of Exercise Prices, Upper Limit	$ 34.24
Options Outstanding, Number of Shares	1,906
Options Outstanding, Weighted-Average Remaining Contractual Life	7 years 7 months 6 days
Options Outstanding, Weighted-Average Exercise Price	$ 32.60
Options Exercisable, Number of Shares	852
Options Exercisable, Weighted-Average Exercise Price	$ 31.64
$34.27 to $45.08
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 34.27
Range of Exercise Prices, Upper Limit	$ 45.08
Options Outstanding, Number of Shares	768
Options Outstanding, Weighted-Average Remaining Contractual Life	9 years 3 months 22 days
Options Outstanding, Weighted-Average Exercise Price	$ 44.62
Options Exercisable, Number of Shares	16
Options Exercisable, Weighted-Average Exercise Price	$ 38.72