Quarterly Results (unaudited) (Unaudited Quarterly Results) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Jan. 28, 2012	Oct. 29, 2011	Jul. 30, 2011	Apr. 30, 2011	Jan. 29, 2011	Oct. 30, 2010	Jul. 31, 2010	May 01, 2010	Jan. 28, 2012	Jan. 29, 2011	Jan. 30, 2010
Quarterly Financial Data [Abstract]
Net sales	$ 8,724	$ 5,853	$ 5,939	$ 5,889	$ 8,269	$ 5,623	$ 5,537	$ 5,574	$ 26,405	$ 25,003	$ 23,489
Cost of sales	(5,151)	(3,544)	(3,457)	(3,586)	(4,855)	(3,377)	(3,214)	(3,378)	(15,738)	(14,824)	(13,973)
Gross margin	3,573	2,309	2,482	2,303	3,414	2,246	2,323	2,196	10,667	10,179	9,516
Selling, general and administrative expenses	(2,314)	(2,018)	(1,976)	(1,973)	(2,245)	(2,069)	(1,953)	(1,993)	(8,281)	(8,260)	(8,062)
Impairments, store closing costs and division consolidation costs	25	0	0	0	(25)	0	0	0	25	(25)	(391)
Net income (loss)	$ 745	$ 139	$ 241	$ 131	$ 667	$ 10	$ 147	$ 23	$ 1,256	$ 847	$ 329
Basic earnings (loss) per share	$ 1.77	$ 0.33	$ 0.56	$ 0.31	$ 1.57	$ 0.02	$ 0.35	$ 0.05	$ 2.96	$ 2.00	$ 0.78
Diluted earnings (loss) per share	$ 1.74	$ 0.32	$ 0.55	$ 0.30	$ 1.55	$ 0.02	$ 0.35	$ 0.05	$ 2.92	$ 1.98	$ 0.78