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Pension and Other Post-Retirement Benefits (Details 1) - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets [Abstract]    
Projected benefit obligations $ 438.3 $ 502.7
Fair value of plan assets 378.6 456.9
Pension plans with an accumulated benefit obligation in excess of plan assets    
Accumulated benefit obligations 412.6 170.6
Fair value of plan assets $ 378.6 $ 140.5