Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.1
Interest (Expense)/Income, Net (Schedule of Interest (Expense)/Income, Net) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Feb. 28, 2019
Feb. 28, 2018
Interest (Expense)/Income, Net [Abstract]        
Interest income on corporate funds $ 3.1 $ 3.1 $ 9.1 $ 8.7
Interest expense (6.7) (1.1) (8.4) (3.2)
Net (loss)/gain from equity-method investments (0.1) 0.3   0.6
Interest (expense)/income, net $ (3.7) $ 2.3 [1] $ 0.7 $ 6.1 [1]
[1] Amounts have been adjusted to reflect the adoption of Accounting Standards Codification ("ASC") Topic 606, "Revenue from Contracts with Customers" ("ASC Topic 606").