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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 9 Months Ended
Oct. 29, 2016
Oct. 31, 2015
Oct. 29, 2016
Oct. 31, 2015
Basic earnings per share        
Net income $ 549,786 $ 587,256 $ 1,620,306 $ 1,611,192
Weighted average common shares outstanding for basic EPS 653,559 671,154 657,746 676,220
Basic earnings per share $ 0.84 $ 0.88 $ 2.46 $ 2.38
Net income $ 549,786 $ 587,256 $ 1,620,306 $ 1,611,192
Weighted average common shares outstanding for basic EPS 653,559 671,154 657,746 676,220
Stock options and awards 8,162 9,690 8,886 9,852
Weighted average common shares outstanding for diluted EPS 661,721 680,844 666,632 686,072
Diluted earnings per share $ 0.83 $ 0.86 $ 2.43 $ 2.35