BASIS OF PRESENTATION, RECENT ACCOUNTING PRONOUNCEMENTS AND OTHER Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 29, 2024	Feb. 28, 2023	Feb. 29, 2024	Feb. 28, 2023
Contract with Customer, Asset and Liability [Abstract]
Revenues recognized included in opening deferred revenues balances			$ 8,500	$ 7,700
Revenue, Performance Obligation [Abstract]
Remaining performance obligation, amount	$ 80,200		80,200
Sales of Financing Receivables [Abstract]
Sales of financing receivables	$ 269	$ 344	$ 1,100	$ 1,500
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