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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. 31, 2015
Nov. 01, 2014
Oct. 31, 2015
Nov. 01, 2014
Capital Stock And Earnings Per Share        
Net income $ 587,256 $ 594,957 $ 1,611,192 $ 1,566,898
Weighted average common shares outstanding for basic EPS 671,154 690,183 676,220 695,142
Basic earnings per share $ 0.88 $ 0.86 $ 2.38 $ 2.25
Net income $ 587,256 $ 594,957 $ 1,611,192 $ 1,566,898
Weighted average common shares outstanding for basic EPS 671,154 690,183 676,220 695,142
Assumed exercise / vesting of Stock options and awards 9,690 10,822 9,852 10,980
Weighted average common shares outstanding for diluted EPS 680,844 701,005 686,072 706,122
Diluted earnings per share $ 0.86 $ 0.85 $ 2.35 $ 2.22