INCOME TAXES - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Feb. 28, 2025	May 31, 2025	May 31, 2024	May 31, 2023	May 31, 2022
Income Tax Disclosure [Abstract]
Deferred foreign income tax benefit	$ 133
Operating loss carryforwards		$ 261
Operating loss carryforwards, subject to expiration		135
Operating loss carryforwards, not subject to expiration		126
Total gross unrecognized tax benefits, excluding related interest and penalties		1,026	$ 990	$ 936	$ 848
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		738
Accrued interest and penalties related to uncertain tax positions (excluding federal benefit)		376	332
Long-term income taxes payable			266
Estimated decrease in total gross unrecognized tax benefits as a result of resolutions of global tax examinations and expiration of applicable statutes of limitations		249
Decrease in income tax expense related to tax holiday		$ 271	$ 338	$ 263
Decrease in income tax expense related to tax holiday per diluted share, (in dollars per share)		$ 0.18	$ 0.22	$ 0.17