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Weighted-Average Actual Target Allocation of Plan Assets (Detail) - Pension Benefits - USD ($) $ in Thousands | May 31, 2022 | May 31, 2021 | May 31, 2020
--- | --- | --- | ---
U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 100.00% |  |
Actual Asset Allocation | $ 616,960 | $ 672,377 | $ 516,550
Non-U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 100.00% |  |
Actual Asset Allocation | $ 193,375 | 239,853 | $ 194,874
Equity securities | U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 55.00% |  |
Actual Asset Allocation | $ 326,200 | 387,100 |
Equity securities | Non-U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 37.00% |  |
Actual Asset Allocation | $ 69,200 | 103,400 |
Fixed income securities | U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 20.00% |  |
Actual Asset Allocation | $ 117,000 | 112,000 |
Fixed income securities | Non-U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 52.00% |  |
Actual Asset Allocation | $ 101,100 | 108,200 |
Multi-class | U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 20.00% |  |
Actual Asset Allocation | $ 136,600 | 150,800 |
Cash | U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 5.00% |  |
Actual Asset Allocation | $ 37,000 | 22,300 |
Cash | Non-U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Actual Asset Allocation | 100 | 100 |
Real Estate | U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Actual Asset Allocation | $ 200 | 200 |
Real Estate | Non-U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 11.00% |  |
Actual Asset Allocation | $ 23,000 | $ 28,200 |

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