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, 2024	May 31, 2023	May 31, 2022
Basic earnings per common share:
Net earnings allocable to common shares	[1]	$ 4,325	$ 3,966	$ 3,819
Weighted-average common shares		248.0	254.0	263.0
Basic earnings per common share		$ 17.41	$ 15.6	$ 14.54
Diluted earnings per common share:
Net earnings allocable to common shares	[1]	$ 4,325	$ 3,966	$ 3,819
Weighted-average common shares		248.0	254.0	263.0
Dilutive effect of share-based awards		3.0	2.0	3.0
Weighted-average diluted shares		251.0	256.0	266.0
Diluted earnings per common share		$ 17.21	$ 15.48	$ 14.33
Anti-dilutive options excluded from diluted earnings per common share		5.8	7.4	4.0

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