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Employee Benefit Plans - Schedule Of Amounts Recognized In Balance Sheet (Details) - USD ($) $ in Millions | May 31, 2023 | May 31, 2022
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U.K. | Pension Plans |  |
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract] |  |
Current liabilities | $ 0.0 | $ 0.0
Non-current liabilities | (5.5) | (1.5)
Net funded balance | (5.5) | (1.5)
U.S. | Other Postretirement Benefits |  |
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract] |  |
Current liabilities | (1.0) | (1.1)
Non-current liabilities | (7.0) | (8.3)
Net funded balance | $ (8.0) | $ (9.4)

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