Relationship between Plans Benefit Obligations and Assets (Detail) - Pension Benefits - USD ($) $ in Thousands	May 31, 2024	May 31, 2023
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Plans with projected benefit obligations in excess of plan assets, benefit obligation	$ 712,123	$ 696,280
Plans with accumulated benefit obligations in excess of plan assets, benefit obligation	41	44
Plans with assets in excess of projected benefit obligations	7,540	893
Plans with assets in excess of accumulated benefit obligations	618,372	598,050
Plans with projected benefit obligations in excess of plan assets, plan asset	711,245	630,315
Plans with assets in excess of projected benefit obligations, plan asset	8,834	1,171
Plans with assets in excess of accumulated benefit obligations, plan asset	720,079	631,486
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Plans with projected benefit obligations in excess of plan assets, benefit obligation	28,469	26,918
Plans with accumulated benefit obligations in excess of plan assets, benefit obligation	25,001	24,837
Plans with assets in excess of projected benefit obligations	137,591	131,894
Plans with assets in excess of accumulated benefit obligations	131,570	123,798
Plans with projected benefit obligations in excess of plan assets, plan asset	19,988	18,585
Plans with accumulated benefit obligations in excess of plan assets, plan asset	17,730	17,839
Plans with assets in excess of projected benefit obligations, plan asset	154,272	147,535
Plans with assets in excess of accumulated benefit obligations, plan asset	$ 156,530	$ 148,281