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Pension and Other Post-Retirement Benefits (Details 1) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets [Abstract]    
Projected benefit obligations $ 67.8 $ 473.8
Fair value of plan assets 40.0 409.1
Pension plans with an accumulated benefit obligation in excess of plan assets    
Accumulated benefit obligations 66.4 453.7
Fair value of plan assets $ 40.0 $ 409.1