Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	May 31, 2022	May 31, 2021
Assets, Fair Value Disclosure [Abstract]
SHORT-TERM INVESTMENTS	$ 4,423	$ 3,587
Fair Value, Measurements, Recurring
Assets, Fair Value Disclosure [Abstract]
Cash	839	840
ASSETS AT FAIR VALUE	12,997	13,476
CASH AND EQUIVALENTS	8,574	9,889
SHORT-TERM INVESTMENTS	4,423	3,587
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | U.S. Treasury securities
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	3,801	2,892
CASH AND EQUIVALENTS	8	0
SHORT-TERM INVESTMENTS	3,793	2,892
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	8,357	9,744
CASH AND EQUIVALENTS	7,727	9,049
SHORT-TERM INVESTMENTS	630	695
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Commercial paper and bonds
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	660	748
CASH AND EQUIVALENTS	37	57
SHORT-TERM INVESTMENTS	623	691
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Money market funds
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	6,458	7,701
CASH AND EQUIVALENTS	6,458	7,701
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	1,237	1,293
CASH AND EQUIVALENTS	1,232	1,291
SHORT-TERM INVESTMENTS	5	2
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | U.S. Agency securities
Assets, Fair Value Disclosure [Abstract]
ASSETS AT FAIR VALUE	2	2
CASH AND EQUIVALENTS	0	0
SHORT-TERM INVESTMENTS	$ 2	$ 2