Restructuring and Other Expense (Income), Net - Schedule of Progression of Liabilities Associated with Restructuring Activities, Combined with Reconciliation to Restructuring and Other Income, Net (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2019
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 6,692	$ 776
Expense (income)	2,752	9,925
Payments	(8,310)	(3,975)
Adjustments	86	(34)
Ending Balance	1,220	6,692	$ 776
Net loss on sale of assets	53,345	123
Restructuring and other expense (income), net	56,097	10,048	(11,018)
Early Retirement And Severance
Restructuring Cost and Reserve [Line Items]
Beginning Balance	6,536	774
Expense (income)	1,314	9,096
Payments	(6,980)	(3,245)
Adjustments	(99)	(89)
Ending Balance	771	6,536	774
Facility Exit And Other Costs
Restructuring Cost and Reserve [Line Items]
Beginning Balance	156	2
Expense (income)	1,438	829
Payments	(1,330)	(730)
Adjustments	185	55
Ending Balance	$ 449	$ 156	$ 2