Selected Quarterly Consolidated Financial Data (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
Quarterly Financial Information [Line Items]
Net sales	$ 8,303,953		$ 7,366,066		$ 6,917,212		$ 6,491,176		$ 7,808,787		$ 6,981,876		$ 6,442,424		$ 6,189,609		$ 29,078,407	$ 27,422,696	$ 25,878,372
Gross earnings	2,344,916	[1]	2,162,437	[1]	1,981,356	[1]	1,813,176	[1]	2,158,487	[1]	2,047,411	[1]	1,855,685	[1]	1,756,076	[1]
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
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
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

[1] Gross earnings equal net sales less cost of sales, including buying and occupancy costs.