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Calculation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2016	May. 02, 2015
Basic earnings per share
Net income	$ 508,346	$ 474,601
Weighted average common shares outstanding for basic EPS	661,515	681,369
Basic earnings per share	$ 0.77	$ 0.70
Net income	$ 508,346	$ 474,601
Weighted average common shares outstanding for basic EPS	661,515	681,369
Stock options and awards	8,873	9,837
Weighted average common shares outstanding for diluted EPS	670,388	691,206
Diluted earnings per share	$ 0.76	$ 0.69

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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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