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Reconciliation of Net Earnings and Number of Shares Used in Basic and Diluted Earnings Per Share Computations (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 29, 2018	Apr. 30, 2017
Earnings Per Share [Line Items]
Net Earnings, Basic	$ 45,168	$ 39,555
Net Earnings, Diluted	$ 45,168	$ 39,555
Weighted Average Shares, Basic	83,392	86,962
Weighted Average Shares, Effect of dilutive stock-based awards	782	748
Weighted Average Shares, Diluted	84,174	87,710
Earnings Per Share, Basic	$ 0.54	$ 0.45
Earnings Per Share, Diluted	$ 0.54	$ 0.45

X

- 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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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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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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