INCOME TAXES (Details) - USD ($) $ in Millions	6 Months Ended
Nov. 30, 2025	Nov. 30, 2024	May 31, 2025
Income Tax Disclosure [Abstract]
Effective income tax rate	20.90%	18.70%
Total gross unrecognized tax benefits, excluding related interest and penalties	$ 1,029		$ 1,026
Total gross unrecognized tax benefits, excluding related interest and penalties, amount which would affect the Company's effective tax rate if recognized in future periods	757
Accrued interest and penalties related to uncertain tax positions (excluding federal benefit)	417		$ 376
Estimated decrease in total gross unrecognized tax benefits as a result of resolutions of global tax examinations and expiration of applicable statutes of limitations	$ 296

Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of unrecognized tax benefits.

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