BASIS OF PRESENTATION, RECENT ACCOUNTING PRONOUNCEMENTS AND OTHER (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2023	Nov. 30, 2022	Nov. 30, 2023	Nov. 30, 2022	May 31, 2023
Equity Securities, FV-NI and without Readily Determinable Fair Value [Abstract]
Non-marketable debt investments and equity securities and related instruments	$ 1,800		$ 1,800		$ 1,600
Acquisition Related and Other Expenses [Abstract]
Transitional and other employee related costs	6	$ 21	12	$ 38
Business combination adjustments, net	12	3	13	8
Other, net	29	38	33	57
Total acquisition related and other expenses	47	62	58	103
Non-Operating Expenses, net [Abstract]
Interest income	133	52	269	90
Foreign currency losses, net	(32)	(55)	(113)	(125)
Noncontrolling interests in income	(41)	(41)	(78)	(79)
Losses from equity investments, net	(79)	(40)	(197)	(126)
Other income (expenses), net	5	13	56	(11)
Total non-operating expenses, net	$ (14)	$ (71)	$ (63)	$ (251)