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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 12 Months Ended
Jan. 30, 2016
Oct. 31, 2015
Aug. 01, 2015
May. 02, 2015
Jan. 31, 2015
Nov. 01, 2014
Aug. 02, 2014
May. 03, 2014
Jan. 30, 2016
Jan. 31, 2015
Feb. 01, 2014
Capital Stock And Earnings Per Share                      
Net income $ 666,466 $ 587,256 $ 549,335 $ 474,601 $ 648,230 $ 594,957 $ 517,624 $ 454,317 $ 2,277,658 $ 2,215,128 $ 2,137,396
Weighted average common stock outstanding for basic earnings per share calculation                 673,484 692,691 713,470
Basic earnings per share $ 1.00 $ 0.88 $ 0.81 $ 0.70 $ 0.95 $ 0.86 $ 0.75 $ 0.65 $ 3.38 $ 3.20 $ 3.00
Net income $ 666,466 $ 587,256 $ 549,335 $ 474,601 $ 648,230 $ 594,957 $ 517,624 $ 454,317 $ 2,277,658 $ 2,215,128 $ 2,137,396
Weighted average common stock outstanding for basic earnings per share calculation                 673,484 692,691 713,470
Assumed exercise / vesting of Stock options and awards                 9,767 10,854 12,906
Weighted average common stock outstanding for diluted earnings per share calculation                 683,251 703,545 726,376
Diluted earnings per share $ 0.99 $ 0.86 $ 0.80 $ 0.69 $ 0.93 $ 0.85 $ 0.73 $ 0.64 $ 3.33 $ 3.15 $ 2.94