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Pension Plans - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
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May 31, 2022 | May 31, 2021 | May 31, 2020 | May 31, 2019
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Matching contribution charged to income | $ 24,700 | $ 21,700 | $ 21,100 |
Pension Benefits |  |  |  |
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Average compensation with accrued benefits vesting period |  |  |  | 5 years
Estimated benefits payable in the first year | 65,500 |  |  |
Estimated benefits payable in the second year | 68,800 |  |  |
Estimated benefits payable in the third year | 70,900 |  |  |
Estimated benefits payable in the fourth year | 73,900 |  |  |
Estimated benefits payable in the fifth year | 76,300 |  |  |
Estimated benefits payable in the years thereafter | 379,800 |  |  |
U.S. Plans | Pension Benefits |  |  |  |
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Contribution to retirement plans in the next fiscal year | 1,300 |  |  |
Contribution to retirement plan in the current | 65,604 | 62,264 |  |
Required contribution to retirement plans in the current fiscal year | 1,000 |  |  |
Non-U.S. Plans | Pension Benefits |  |  |  |
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Contribution to retirement plans in the next fiscal year | 4,900 |  |  |
Contribution to retirement plan in the current | $ 4,626 | $ 7,119 |  |

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