Quarterly Financial Information (Unaudited) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								9 Months Ended	12 Months Ended
	Feb. 02, 2013	Oct. 27, 2012	Jul. 28, 2012	Apr. 28, 2012	Jan. 28, 2012	Oct. 29, 2011	Jul. 30, 2011	Apr. 30, 2011	Oct. 27, 2012	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 6,342	$ 4,490	$ 4,205	$ 4,243	$ 6,018	$ 4,376	$ 4,248	$ 4,162		$ 19,279	$ 18,804	$ 18,391
Gross margin	2,112	1,712	1,642	1,524	2,177	1,688	1,728	1,586		6,990	7,179	7,032
Net income	$ 378	$ 215	$ 240	$ 154	$ 455	$ 211	$ 299	$ 201		$ 986	$ 1,167	$ 1,120
Basic shares	227	233	238	243	251	264	276	288		235	270	304
Basic net income per share	$ 1.66	$ 0.92	$ 1.01	$ 0.63	$ 1.82	$ 0.80	$ 1.08	$ 0.70		$ 4.19	$ 4.33	$ 3.69
Diluted shares	228	235	239	245	252	265	278	290		237	271	306
Diluted net income per share	$ 1.66	$ 0.91	$ 1.00	$ 0.63	$ 1.81	$ 0.80	$ 1.08	$ 0.69		$ 4.17	$ 4.30	$ 3.66
Weeks in reporting period	P14W								P13W	P53W	P52W	P52W