Activity that Occurred for Level Three Assets (Detail) - Significant Unobservable Inputs (Level 3) - Pension Benefits - USD ($) $ in Thousands		12 Months Ended
		May 31, 2023	May 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Balance at Beginning of Period		$ 23,179	$ 28,398
Actual Return on Plan Assets For Assets Still Held at Reporting Date		(2,399)	(1,009)
Settlements	[1]	(1,362)	(4,210)
Balance at End of Period		$ 19,418	$ 23,179

[1] Includes the impact of exchange rate changes during the year.