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Pension Plans - Pretax Net Actuarial Loss and Prior Service (Cost) Credits Recognized in Accumulated Other Comprehensive Income (Loss) not Affecting Retained Earnings, Pension (Detail) - Pension Benefits - USD ($) $ in Thousands | May 31, 2025 | May 31, 2024
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U.S. Plans |  |
Schedule of Net Periodic Benefit Costs and Assumptions for Defined Benefit Postretirement Plans [Line Items] |  |
Net actuarial loss | $ (108,475) | $ (126,481)
Prior service (costs) credit | (6) | (8)
Total recognized in accumulated other comprehensive income not affecting retained earnings | (108,481) | (126,489)
Non-U.S. Plans |  |
Schedule of Net Periodic Benefit Costs and Assumptions for Defined Benefit Postretirement Plans [Line Items] |  |
Net actuarial loss | (37,298) | (32,209)
Prior service (costs) credit | 330 | 424
Total recognized in accumulated other comprehensive income not affecting retained earnings | $ (36,968) | $ (31,785)

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