FAIR VALUE MEASUREMENTS - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Feb. 29, 2024	May 31, 2023
Assets, Fair Value Disclosure [Abstract]
SHORT-TERM INVESTMENTS	$ 1,613	$ 3,234
Fair Value, Measurements, Recurring
Assets, Fair Value Disclosure [Abstract]
Cash	1,118	1,767
ASSETS AT FAIR VALUE	10,573	10,675
CASH AND EQUIVALENTS	8,960	7,441
SHORT-TERM INVESTMENTS	1,613	3,234
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | U.S. Treasury securities
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	1,002	2,655
CASH AND EQUIVALENTS	1	0
SHORT-TERM INVESTMENTS	1,001	2,655
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	8,453	6,253
CASH AND EQUIVALENTS	7,841	5,674
SHORT-TERM INVESTMENTS	612	579
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Commercial paper and bonds
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	580	543
CASH AND EQUIVALENTS	18	15
SHORT-TERM INVESTMENTS	562	528
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Money market funds
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	7,272	5,157
CASH AND EQUIVALENTS	7,272	5,157
SHORT-TERM INVESTMENTS	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Time deposits
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	560	507
CASH AND EQUIVALENTS	551	502
SHORT-TERM INVESTMENTS	9	5
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | U.S. Agency securities
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	41	46
CASH AND EQUIVALENTS	0	0
SHORT-TERM INVESTMENTS	$ 41	$ 46