Business And Summary Of Accounting Policies (Net Income Per Share) (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
Business And Summary Of Accounting Policies [Abstract]
Numerator - Net income	$ 455	$ 211	$ 299	$ 201	$ 494	$ 176	$ 255	$ 195	$ 1,167		$ 1,120		$ 973
Denominator - Weighted average shares, Basic	251	264	276	288	295	307	307	307	270		304		305
Impact of dilutive employee stock options									1	[1]	2	[1]	1	[1]
Weighted average shares, Diluted	252	265	278	290	297	308	308	309	271		306		306
Net income per share, Basic	$ 1.82	$ 0.80	$ 1.08	$ 0.70	$ 1.68	$ 0.57	$ 0.83	$ 0.63	$ 4.33		$ 3.69		$ 3.19
Net income per share, Diluted	$ 1.81	$ 0.80	$ 1.08	$ 0.69	$ 1.66	$ 0.57	$ 0.83	$ 0.63	$ 4.30		$ 3.66		$ 3.17
Excluded options as the impact of such options was antidilutive									11		8		17

[1] Excludes 11 million options for 2011, 8 million options for 2010 and 17 million options for 2009 as the impact of such options was antidilutive.