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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. 28, 2017
Oct. 29, 2016
Jul. 30, 2016
Apr. 30, 2016
Jan. 30, 2016
Oct. 31, 2015
Aug. 01, 2015
May 02, 2015
Jan. 28, 2017
Jan. 30, 2016
Jan. 31, 2015
Basic earnings per share                      
Net income $ 677,928 $ 549,786 $ 562,174 $ 508,346 $ 666,466 $ 587,256 $ 549,335 $ 474,601 $ 2,298,234 $ 2,277,658 $ 2,215,128
Weighted average common stock outstanding for basic earnings per share calculation                 655,647 673,484 692,691
Basic earnings per share $ 1.04 $ 0.84 $ 0.85 $ 0.77 $ 1.00 $ 0.88 $ 0.81 $ 0.70 $ 3.51 $ 3.38 $ 3.20
Net income $ 677,928 $ 549,786 $ 562,174 $ 508,346 $ 666,466 $ 587,256 $ 549,335 $ 474,601 $ 2,298,234 $ 2,277,658 $ 2,215,128
Weighted average common stock outstanding for basic earnings per share calculation                 655,647 673,484 692,691
Stock options and awards                 8,785 9,767 10,854
Weighted average common stock outstanding for diluted earnings per share calculation                 664,432 683,251 703,545
Diluted earnings per share $ 1.03 $ 0.83 $ 0.84 $ 0.76 $ 0.99 $ 0.86 $ 0.80 $ 0.69 $ 3.46 $ 3.33 $ 3.15