Quarterly report pursuant to Section 13 or 15(d)

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

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Other Expense, Net (Schedule of Other Expense, Net) (Details) - USD ($)
$ in Millions
3 Months Ended
Aug. 31, 2020
Aug. 31, 2019
Other Expense, Net [Abstract]    
Interest income on corporate investments $ 0.6 $ 4.5
Interest expense (9.0) (10.3)
Other 0.5 1.0
Other expense, net $ (7.9) $ (4.8)