Earnings Per Share - Summary (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Aug. 02, 2019	Jul. 31, 2020	Aug. 02, 2019
Basic earnings per common share:
Net earnings	$ 2,828	$ 1,676	$ 4,165	$ 2,722
Less: Net earnings allocable to participating securities	(12)	(6)	(16)	(9)
Net earnings allocable to common shares, basic	$ 2,816	$ 1,670	$ 4,149	$ 2,713
Weighted-average common shares outstanding (in shares)	752	781	754	788
Basic earnings per common share (in dollars per share)	$ 3.74	$ 2.14	$ 5.50	$ 3.44
Diluted earnings per common share:
Net earnings	$ 2,828	$ 1,676	$ 4,165	$ 2,722
Less: Net earnings allocable to participating securities	(12)	(6)	(16)	(9)
Net earnings allocable to common shares, diluted	$ 2,816	$ 1,670	$ 4,149	$ 2,713
Weighted-average common shares outstanding (in shares)	752	781	754	788
Dilutive effect of non-participating share-based awards (in shares)	1	0	1	1
Weighted-average common shares, as adjusted (in shares)	753	781	755	789
Diluted earnings per common share (in dollars per share)	$ 3.74	$ 2.14	$ 5.50	$ 3.44