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Commitments and Contingencies (Future Minimum Operating Lease Payments) (Details)
$ in Millions
May 31, 2019
USD ($)
Commitments and Contingencies [Abstract]  
Year ending May 31, 2020 $ 37.7
Year ending May 31, 2021 29.9
Year ending May 31, 2022 21.3
Year ending May 31, 2023 13.8
Year ending May 31, 2024 10.5
Year ending May 31, Thereafter $ 10.7