Amounts Recognized in Consolidated Balance Sheet, Pension (Detail) - Pension Benefits - USD ($) $ in Thousands	May 31, 2021	May 31, 2020
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	$ (8)	$ (8)
Noncurrent liabilities	(149,688)	(246,181)
Net Amount Recognized	(149,696)	(246,189)
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	22,698	13,395
Current liabilities	(471)	(547)
Noncurrent liabilities	(14,402)	(28,252)
Net Amount Recognized	$ 7,825	$ (15,404)

Amount of liability, recognized in statement of financial position, for defined benefit pension plan, classified as current. Excludes other postretirement benefit plan.

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