Income Taxes - Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2021
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	$ 169	$ 192	$ 129
Increases for tax positions taken in the current year	3	14	3
Increases for tax positions taken in prior years	68	8	69
Decreases for tax positions taken in prior years	(7)	(15)	(6)
Settlements	(15)	(32)	(6)
Changes due to currency translation	(6)	2	3
Balance at end of year	$ 212	$ 169	$ 192