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Employee Benefit Plans (Details) - Schedule of expected future benefit payments
$ in Millions
May 31, 2017
USD ($)
Other Postretirement Benefits [Member]  
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]  
2017 $ 2.3
2018 2.3
2019 2.3
2020 2.3
2021 2.2
2022-2026 10.6
Medicare Subsidy Receipts  
2017 0.2
2018 0.2
2019 0.3
2020 0.3
2021 0.3
2022-2026 1.3
U.S. [Member] | Pension Plans [Member]  
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]  
2017 127.8
2018 0.0
2019 0.0
2020 0.0
2021 0.0
2022-2026 0.0
U.K. [Member] | Pension Plans [Member]  
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]  
2017 0.8
2018 1.0
2019 0.9
2020 1.0
2021 1.3
2022-2026 $ 7.3