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Pension Plans - Activity that Occurred for Level Three Assets (Detail) - Significant Unobservable Inputs (Level 3) - Pension Benefits - USD ($) $ in Thousands | 12 Months Ended
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May 31, 2025 | May 31, 2024
Defined Benefit Plan Disclosure [Line Items] |  |  |
Balance at Beginning of Period |  | $ 20,477 | $ 19,418
Actual Return on Plan Assets For Assets Still Held at Reporting Date |  | 348 | 1,051
Settlements | [1] | 7,360 | 8
Balance at End of Period |  | $ 28,185 | $ 20,477
[1] | Includes the impact of exchange rate changes during the year.

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