Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	May 31, 2023	May 31, 2022
Assets, Fair Value Disclosure [Abstract]
SHORT-TERM INVESTMENTS	$ 3,234	$ 4,423
Fair Value, Measurements, Recurring
Assets, Fair Value Disclosure [Abstract]
Cash	1,767	839
ASSETS AT FAIR VALUE	10,675	12,997
CASH AND EQUIVALENTS	7,441	8,574
SHORT-TERM INVESTMENTS	3,234	4,423
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | U.S. Treasury securities
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	2,655	3,801
CASH AND EQUIVALENTS	0	8
SHORT-TERM INVESTMENTS	2,655	3,793
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	6,253	8,357
CASH AND EQUIVALENTS	5,674	7,727
SHORT-TERM INVESTMENTS	579	630
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Commercial paper and bonds
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	543	660
CASH AND EQUIVALENTS	15	37
SHORT-TERM INVESTMENTS	528	623
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Money market funds
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	5,157	6,458
CASH AND EQUIVALENTS	5,157	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	507	1,237
CASH AND EQUIVALENTS	502	1,232
SHORT-TERM INVESTMENTS	5	5
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | U.S. Agency securities
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	46	2
CASH AND EQUIVALENTS	0	0
SHORT-TERM INVESTMENTS	$ 46	$ 2