EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended
		Aug. 31, 2022	Aug. 31, 2021
Earnings Per Share [Abstract]
Net income		$ 1,548	$ 2,457
Weighted average common shares outstanding		2,685	2,769
Dilutive effect of employee stock plans		62	92
Dilutive weighted average common shares outstanding		2,747	2,861
Basic earnings per share		$ 0.58	$ 0.89
Diluted earnings per share		$ 0.56	$ 0.86
Shares subject to anti-dilutive restricted stock-based awards and stock options excluded from calculation	[1]	71	30

[1] These weighted shares relate to anti-dilutive restricted service based stock-based awards as calculated using the treasury stock method and contingently issuable shares pursuant to PSO arrangements. Such shares could be dilutive in the future.