Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	May 03, 2019	May 04, 2018
Basic earnings per common share:
Net earnings	$ 1,046	$ 988
Less: Net earnings allocable to participating securities	(3)	(3)
Net earnings allocable to common shares, basic	$ 1,043	$ 985
Weighted-average common shares outstanding (in shares)	796	825
Basic earnings per common share (in dollars per share)	$ 1.31	$ 1.19
Diluted earnings per common share:
Net earnings	$ 1,046	$ 988
Less: Net earnings allocable to participating securities	(3)	(3)
Net earnings allocable to common shares, diluted	$ 1,043	$ 985
Weighted-average common shares outstanding (in shares)	796	825
Dilutive effect of non-participating share-based awards (in shares)	1	1
Weighted-average common shares, as adjusted (in shares)	797	826
Diluted earnings per common share (in dollars per share)	$ 1.31	$ 1.19