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Other Income/(Expense), Net (Schedule of Other Income/(Expense), Net) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 30, 2023 | Nov. 30, 2022 | Nov. 30, 2023 | Nov. 30, 2022
Other Income and Expenses [Abstract] |  |  |  |
Interest income on corporate investments | $ 20.3 | $ 10.1 | $ 41.8 | $ 15.5
Interest expense | (8.5) | (9.2) | (17.9) | (18.3)
Other | (0.1) | 2.0 | 0.6 | 2.1
Other income/(expense), net | $ 11.7 | $ 2.9 | $ 24.5 | $ (0.7)

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