Calculation of Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Jan. 31, 2015	Nov. 01, 2014	Aug. 02, 2014	May 03, 2014	Feb. 01, 2014	Nov. 02, 2013	Aug. 03, 2013	May 04, 2013	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Capital Stock And Earnings Per Share
Net income	$ 648,230	$ 594,957	$ 517,624	$ 454,317	$ 582,292	$ 622,655	$ 479,559	$ 452,890	$ 2,215,128	$ 2,137,396	$ 1,906,687
Weighted average common stock outstanding for basic earnings per share calculation									692,691	713,470	733,588
Basic earnings per share	$ 0.95	$ 0.86	$ 0.75	$ 0.65	$ 0.82	$ 0.88	$ 0.67	$ 0.63	$ 3.20	$ 3.00	$ 2.60
Net income	$ 648,230	$ 594,957	$ 517,624	$ 454,317	$ 582,292	$ 622,655	$ 479,559	$ 452,890	$ 2,215,128	$ 2,137,396	$ 1,906,687
Weighted average common stock outstanding for basic earnings per share calculation									692,691	713,470	733,588
Assumed exercise / vesting of Stock options and awards									10,854	12,906	13,967
Weighted average common stock outstanding for diluted earnings per share calculation									703,545	726,376	747,555
Diluted earnings per share	$ 0.93	$ 0.85	$ 0.73	$ 0.64	$ 0.81	$ 0.86	$ 0.66	$ 0.62	$ 3.15	$ 2.94	$ 2.55