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Retirement and Other Postretirement Benefit Plans - Schedule of Expected Benefit Payments for the Plan (Details)
$ in Millions
Dec. 31, 2017
USD ($)
U.S. Postretirement Plans  
Expected benefit payments for the plans  
2018 $ 0.5
2019 0.5
2020 0.5
2021 0.5
2022 0.5
2023-2027 1.5
Aggregate expected benefit payments 4.0
U.S. Plans | Defined Benefit Retirement Plans  
Expected benefit payments for the plans  
2018 4.6
2019 1.0
2020 2.7
2021 2.9
2022 1.2
2023-2027 14.4
Aggregate expected benefit payments 26.8
European Plans | Defined Benefit Retirement Plans  
Expected benefit payments for the plans  
2018 4.7
2019 4.9
2020 5.2
2021 7.2
2022 6.6
2023-2027 41.0
Aggregate expected benefit payments $ 69.6