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Pension Plans - Weighted-Average Actual Target Allocation of Plan Assets (Detail) - Pension Benefits - USD ($) $ in Thousands | May 31, 2025 | May 31, 2024 | May 31, 2023
--- | --- | --- | ---
U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 100.00% |  |
Actual Asset Allocation | $ 770,703 | $ 720,079 | $ 631,486
Non-U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 100.00% |  |
Actual Asset Allocation | $ 188,984 | 174,260 | $ 166,120
Equity securities | U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 55.00% |  |
Actual Asset Allocation | $ 429,200 | 399,000 |
Equity securities | Non-U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 34.00% |  |
Actual Asset Allocation | $ 66,100 | 60,400 |
Fixed income securities | U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 20.00% |  |
Actual Asset Allocation | $ 166,300 | 151,200 |
Fixed income securities | Non-U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 45.00% |  |
Actual Asset Allocation | $ 83,900 | 82,900 |
Multi-class | U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 20.00% |  |
Actual Asset Allocation | $ 155,800 | 141,200 |
Cash | U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 5.00% |  |
Actual Asset Allocation | $ 19,300 | 28,500 |
Cash | Non-U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Actual Asset Allocation | 500 | 200 |
Real Estate | U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Actual Asset Allocation | $ 100 | 200 |
Real Estate | Non-U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 21.00% |  |
Actual Asset Allocation | $ 38,500 | $ 30,800 |

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