Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jan. 29, 2016	Jan. 30, 2015	Jan. 31, 2014
Basic earnings per common share:
Net earnings	$ 2,546	$ 2,698	$ 2,286
Less: Net earnings allocable to participating securities	(12)	(16)	(16)
Net earnings allocable to common shares, basic	$ 2,534	$ 2,682	$ 2,270
Weighted-average common shares outstanding	927	988	1,059
Basic earnings per common share	$ 2.73	$ 2.71	$ 2.14
Diluted earnings per common share:
Net earnings	$ 2,546	$ 2,698	$ 2,286
Less: Net earnings allocable to participating securities	(12)	(16)	(16)
Net earnings allocable to common shares, diluted	$ 2,534	$ 2,682	$ 2,270
Weighted-average common shares outstanding	927	988	1,059
Dilutive effect of non-participating share-based awards	2	2	2
Weighted-average common shares, as adjusted	929	990	1,061
Diluted earnings per common share	$ 2.73	$ 2.71	$ 2.14