Quarterly report pursuant to Section 13 or 15(d)

Other Income/(Expense), Net (Schedule of Other Income/(Expense), Net) (Details)

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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)