BASIS OF PRESENTATION, RECENT ACCOUNTING PRONOUNCEMENTS AND OTHER Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2024	Nov. 30, 2023	Nov. 30, 2024	Nov. 30, 2023
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Decrease in total operating expense due to change in accounting estimate	$ 189		$ 386
Basic earnings per share	$ 1.13	$ 0.91	$ 2.19	$ 1.8
Diluted earnings per share	$ 1.1	$ 0.89	$ 2.13	$ 1.75
Increase in net income	$ 149		$ 306
Increase in basic earning per share	$ 0.05		$ 0.11
Increase in diluted earning per share	$ 0.05		$ 0.11
Contract with Customer, Asset and Liability [Abstract]
Revenues recognized included in opening deferred revenues balances			$ 6,900	$ 6,800
Revenue, Performance Obligation [Abstract]
Remaining performance obligation, amount	$ 97,300		97,300
Sales of Financing Receivables [Abstract]
Sales of financing receivables	$ 266	$ 255	$ 861	$ 816
Servers and Networking Equipment [Member] | Minimum [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Useful life of asset	5 years		5 years
Servers and Networking Equipment [Member] | Maximum [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Useful life of asset	6 years		6 years