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Employee Benefits Schedule of Expected Benefit Payments for Pension and Other Postretirement Benefits (Details)
$ in Millions
Dec. 31, 2015
USD ($)
Pension Plan [Member]  
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]  
2016 $ 7.3
2017 6.6
2018 5.9
2019 7.4
2020 7.2
2021 through 2025 40.7
Other Postretirement Benefit Plan [Member]  
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]  
2016 0.3
2017 0.3
2018 0.3
2019 0.3
2020 0.3
2021 through 2025 $ 1.4