Computation of Earnings Per Share - Schedule of Basic and Diluted Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
		May 31, 2022	May 31, 2021	May 31, 2020
Basic earnings per common share:
Net earnings allocable to common shares	[1]	$ 3,819	$ 5,220	$ 1,284
Weighted-average common shares		263.0	264.0	261.0
Basic earnings per common share		$ 14.54	$ 19.79	$ 4.92
Diluted earnings per common share:
Net earnings allocable to common shares	[1]	$ 3,819	$ 5,221	$ 1,284
Weighted-average common shares		263.0	264.0	261.0
Dilutive effect of share-based awards		3.0	4.0	1.0
Weighted-average diluted shares		266.0	268.0	262.0
Diluted earnings per common share		$ 14.33	$ 19.45	$ 4.90
Anti-dilutive options excluded from diluted earnings per common share		4.0	3.5	11.7

[1] Net earnings available to participating securities were immaterial in all periods presented.