Quarterly Results (unaudited) (Unaudited Quarterly Results) (Details) (USD $) In Millions, 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 Data [Abstract]
Net sales	$ 9,364	$ 6,195	$ 6,267	$ 6,279	$ 9,202	$ 6,276	$ 6,066	$ 6,387	$ 28,105	$ 27,931	$ 27,686
Cost of sales	(5,589)	(3,766)	(3,672)	(3,836)	(5,464)	(3,817)	(3,533)	(3,911)	(16,863)	(16,725)	(16,538)
Gross margin	3,775	2,429	2,595	2,443	3,738	2,459	2,533	2,476	11,242	11,206	11,148
Selling, general and administrative expenses	(2,324)	(2,007)	(2,024)	(2,000)	(2,301)	(2,099)	(1,999)	(2,041)	(8,355)	(8,440)	(8,482)
Impairments, store closing and other costs	(87)	0	0	0	(88)	0	0	0	(87)	(88)	(5)
Net income	$ 793	$ 217	$ 292	$ 224	$ 811	$ 177	$ 281	$ 217	$ 1,526	$ 1,486	$ 1,335
Basic earnings per share	$ 2.30	$ 0.62	$ 0.81	$ 0.61	$ 2.21	$ 0.47	$ 0.73	$ 0.56	$ 4.30	$ 3.93	$ 3.29
Diluted earnings per share	$ 2.26	$ 0.61	$ 0.80	$ 0.60	$ 2.16	$ 0.47	$ 0.72	$ 0.55	$ 4.22	$ 3.86	$ 3.24