FAIR VALUE MEASUREMENTS - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Feb. 28, 2023	May 31, 2022
Assets, Fair Value Disclosure [Abstract]
SHORT-TERM INVESTMENTS	$ 3,847	$ 4,423
Fair Value, Measurements, Recurring
Assets, Fair Value Disclosure [Abstract]
Cash	1,105	839
ASSETS AT FAIR VALUE	10,802	12,997
CASH AND EQUIVALENTS	6,955	8,574
SHORT-TERM INVESTMENTS	3,847	4,423
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | U.S. Treasury securities
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	3,185	3,801
CASH AND EQUIVALENTS	1	8
SHORT-TERM INVESTMENTS	3,184	3,793
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	6,512	8,357
CASH AND EQUIVALENTS	5,849	7,727
SHORT-TERM INVESTMENTS	663	630
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Commercial paper and bonds
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	583	660
CASH AND EQUIVALENTS	8	37
SHORT-TERM INVESTMENTS	575	623
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Money market funds
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	5,114	6,458
CASH AND EQUIVALENTS	5,114	6,458
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	781	1,237
CASH AND EQUIVALENTS	727	1,232
SHORT-TERM INVESTMENTS	54	5
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | U.S. Agency securities
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	34	2
CASH AND EQUIVALENTS	0	0
SHORT-TERM INVESTMENTS	$ 34	$ 2