Other Expense (Income), Net (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2022	Nov. 30, 2021	Nov. 30, 2022	Nov. 30, 2021
Other Income and Expenses [Abstract]
Pension non-service costs (credits)	$ 2,486	$ (2,646)	$ 5,002	$ (5,369)
Other	(176)	(274)	(276)	(890)
Other expense (income), net	$ 2,310	$ (2,920)	$ 4,726	$ (6,259)