Activity that Occurred for Level Three Assets (Detail) - Significant Unobservable Inputs (Level 3) - Pension Benefits - USD ($) $ in Thousands		12 Months Ended
		May 31, 2022	May 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Balance at Beginning of Period		$ 28,398	$ 27,437
Actual Return on Plan Assets For Assets Still Held at Reporting Date		(1,009)	455
Settlements	[1]	(4,210)	506
Balance at End of Period		$ 23,179	$ 28,398

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