BASIS OF PRESENTATION, RECENT ACCOUNTING PRONOUNCEMENTS AND OTHER Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2023	Nov. 30, 2022	Nov. 30, 2023	Nov. 30, 2022
Contract with Customer, Asset and Liability [Abstract]
Revenues recognized included in opening deferred revenues balances			$ 6,800	$ 6,200
Revenue, Performance Obligation [Abstract]
Remaining performance obligation, amount	$ 65,500		65,500
Sales of Financing Receivables [Abstract]
Sales of financing receivables	$ 255	$ 265	$ 816	$ 1,200
Accounting Standards Update 2020-04 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Accounting Standards Update, Adopted	true		true
Immaterial effect	true		true