Reconciliation of Net Earnings and Number of Shares Used in Basic and Diluted Earnings Per Share Computations (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Aug. 03, 2014	Aug. 04, 2013	Aug. 03, 2014	Aug. 04, 2013
Earnings Per Share [Line Items]
Net Earnings, Basic	$ 50,747	$ 48,919	$ 96,909	$ 88,385
Net Earnings, Diluted	$ 50,747	$ 48,919	$ 96,909	$ 88,385
Weighted Average Shares, Basic	93,979	96,892	94,010	97,470
Weighted Average Shares, Effect of dilutive stock-based awards	1,860	2,065	1,704	1,895
Weighted Average Shares, Diluted	95,839	98,957	95,714	99,365
Earnings Per Share, Basic	$ 0.54	$ 0.50	$ 1.03	$ 0.91
Earnings Per Share, Diluted	$ 0.53	$ 0.49	$ 1.01	$ 0.89

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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