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Defined Benefit Pension Settlement (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Nov. 30, 2023 | Nov. 30, 2022
Defined Benefit Pension Settlement |  |
Non-cash, pre-tax pension settlement charge | $ 26.7 |
Non-cash, after-tax pension settlement charge | $ 16.1 |
Excise tax upon withdrawal from the plan (as a percent) | 20.00% |
Surplus plan assets, classified as Other non-current assets |  | $ 6.9

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