FAIR VALUE MEASUREMENTS - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	May 31, 2024	May 31, 2023
Assets, Fair Value Disclosure [Abstract]
SHORT-TERM INVESTMENTS	$ 1,722	$ 3,234
Fair Value, Measurements, Recurring
Assets, Fair Value Disclosure [Abstract]
Cash	1,222	1,767
ASSETS AT FAIR VALUE	11,582	10,675
CASH AND EQUIVALENTS	9,860	7,441
SHORT-TERM INVESTMENTS	1,722	3,234
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | U.S. Treasury securities
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	1,175	2,655
CASH AND EQUIVALENTS	155	0
SHORT-TERM INVESTMENTS	1,020	2,655
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	9,185	6,253
CASH AND EQUIVALENTS	8,483	5,674
SHORT-TERM INVESTMENTS	702	579
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Commercial paper and bonds
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	591	543
CASH AND EQUIVALENTS	17	15
SHORT-TERM INVESTMENTS	574	528
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Money market funds
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	8,119	5,157
CASH AND EQUIVALENTS	8,119	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	440	507
CASH AND EQUIVALENTS	347	502
SHORT-TERM INVESTMENTS	93	5
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | U.S. Agency securities
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	35	46
CASH AND EQUIVALENTS	0	0
SHORT-TERM INVESTMENTS	$ 35	$ 46