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Postretirement Benefits - Changes Recognized in Other Comprehensive loss (income), Postretirement Benefits (Detail) - USD ($) $ in Thousands | 12 Months Ended
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May 31, 2025 | May 31, 2024 | May 31, 2023
Amounts recognized as a component of net periodic benefit cost: |  |  |
Total recognized in other comprehensive loss (income) | $ (11,986) | $ (64,117) | $ (4,619)
Postretirement Benefits | Domestic |  |  |
Changes in plan assets and benefit obligations recognized in other comprehensive loss (income): |  |  |
Net (gain) loss arising during the year | 94 | (85) |
Amounts recognized as a component of net periodic benefit cost: |  |  |
Amortization or settlement recognition of net gain | 25 | 15 |
Total recognized in other comprehensive loss (income) | 119 | (70) |
Postretirement Benefits | Non-U.S. Plans |  |  |
Changes in plan assets and benefit obligations recognized in other comprehensive loss (income): |  |  |
Net (gain) loss arising during the year | (3,635) | (7,983) |
Effect of exchange rates on amounts included in AOCI | 66 | (13) |
Amounts recognized as a component of net periodic benefit cost: |  |  |
Amortization or settlement recognition of net gain | 551 | 49 |
Total recognized in other comprehensive loss (income) | $ (3,018) | $ (7,947) |

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