Contingencies and Accrued Losses - Changes in Accrued Warranty Balances (Detail) - USD ($) $ in Thousands		12 Months Ended
		May 31, 2023	May 31, 2022	May 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Beginning Balance		$ 10,905	$ 13,175	$ 11,106
Deductions	[1]	(27,851)	(26,332)	(25,817)
Provision charged to expense		28,722	24,062	27,886
Ending Balance		$ 11,776	$ 10,905	$ 13,175

[1] Primarily claims paid during the year.