Postretirement Benefits - Changes Recognized in Other Comprehensive loss (income), Postretirement Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
Amounts recognized as a component of net periodic benefit cost:
Total recognized in other comprehensive loss (income)	$ (64,117)	$ (4,619)	$ (37,227)
Postretirement Benefits | Domestic
Changes in plan assets and benefit obligations recognized in other comprehensive loss (income):
Net (gain) loss arising during the year	(85)	(369)
Amounts recognized as a component of net periodic benefit cost:
Amortization or curtailment recognition of prior service credit	0	121
Amortization or settlement recognition of net gain (loss)	15	(44)
Total recognized in other comprehensive loss (income)	(70)	(292)
Postretirement Benefits | Non-U.S. Plans
Changes in plan assets and benefit obligations recognized in other comprehensive loss (income):
Net (gain) loss arising during the year	(7,983)	(276)
Effect of exchange rates on amounts included in AOCI	(13)	265
Amounts recognized as a component of net periodic benefit cost:
Amortization or settlement recognition of net gain (loss)	49	51
Total recognized in other comprehensive loss (income)	$ (7,947)	$ 40