Relationship between Plans Benefit Obligations and Assets (Detail) - Pension Benefits - USD ($) $ in Thousands	May 31, 2022	May 31, 2021
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Plans with projected benefit obligations in excess of plan assets, benefit obligation	$ 702,511	$ 822,073
Plans with accumulated benefit obligations in excess of plan assets, benefit obligation	10,542	702,315
Plans with assets in excess of projected benefit obligations	1,224
Plans with assets in excess of accumulated benefit obligations	599,891
Plans with projected benefit obligations in excess of plan assets, plan asset	615,659	672,377
Plans with accumulated benefit obligations in excess of plan assets, plan asset	10,024	672,377
Plans with assets in excess of projected benefit obligations, plan asset	1,301
Plans with assets in excess of accumulated benefit obligations, plan asset	606,936
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Plans with projected benefit obligations in excess of plan assets, benefit obligation	36,607	45,294
Plans with accumulated benefit obligations in excess of plan assets, benefit obligation	32,808	43,522
Plans with assets in excess of projected benefit obligations	145,927	186,734
Plans with assets in excess of accumulated benefit obligations	139,333	173,490
Plans with projected benefit obligations in excess of plan assets, plan asset	25,049	30,421
Plans with accumulated benefit obligations in excess of plan assets, plan asset	22,844	30,421
Plans with assets in excess of projected benefit obligations, plan asset	168,326	209,432
Plans with assets in excess of accumulated benefit obligations, plan asset	$ 170,531	$ 209,432