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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
	May 05, 2013	Apr. 29, 2012
Earnings Per Share [Line Items]
Net Earnings, Basic	$ 39,466	$ 30,716
Net Earnings, Diluted	$ 39,466	$ 30,716
Weighted Average Shares, Basic	97,704	100,172
Weighted Average Shares, Effect of dilutive stock-based awards	1,811	1,784
Weighted Average Shares, Diluted	99,515	101,956
Earnings Per Share, Basic	$ 0.40	$ 0.31
Earnings Per Share, Diluted	$ 0.40	$ 0.30

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- Definition

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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