Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 02, 2013	Aug. 03, 2012	Aug. 02, 2013	Aug. 03, 2012
Basic earnings per common share:
Net earnings	$ 941	$ 747	$ 1,482	$ 1,275
Less: Net earnings allocable to participating securities	(6)	(5)	(10)	(9)
Net earnings allocable to common shares	935	742	1,472	1,266
Weighted-average common shares outstanding	1,067	1,157	1,077	1,182
Basic earnings per common share	$ 0.88	$ 0.64	$ 1.37	$ 1.07
Diluted earnings per common share:
Net earnings	941	747	1,482	1,275
Less: Net earnings allocable to participating securities	(6)	(5)	(10)	(9)
Net earnings allocable to common shares	$ 935	$ 742	$ 1,472	$ 1,266
Weighted-average common shares outstanding	1,067	1,157	1,077	1,182
Dilutive effect of non-participating share-based awards	1	2	2	1
Weighted-average common shares, as adjusted	1,068	1,159	1,079	1,183
Diluted earnings per common share	$ 0.88	$ 0.64	$ 1.36	$ 1.07