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Employee Pension Plans - Other Changes in Plan Assets And Benefit Obligations Recognized in OCI (Detail) - USD ($) $ in Thousands | 12 Months Ended
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May 31, 2023 | May 31, 2022
Pension Benefit |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Net (gain) loss | $ 809 | $ (8,903)
Amortization of net (gain) loss | (191) | (546)
Settlement cost | (4,774) | (1,357)
Total recognized in other comprehensive income | (4,156) | (10,806)
Total recognized in net periodic benefit cost and OCI | 110 | (10,704)
Other Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Net (gain) loss | (281) | (873)
Amortization of net (gain) loss | (441) |
Settlement cost | 50 |
Total recognized in other comprehensive income | (672) | (873)
Total recognized in net periodic benefit cost and OCI | $ 536 | $ (787)

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