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Pension and Savings Plans (Details 1) - Pension Plan [Member] - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Amounts recognized in accumulated other comprehensive loss      
Net actuarial loss (gain) arising during year $ 6.6 $ 30.6 $ 79.2
Amortization:      
Net actuarial loss (24.7) (39.6) (30.2)
Prior service cost (0.3) (1.0) (1.3)
Settlement Charge 0.0 0.0 8.7
Total recorded in other comprehensive (income) loss $ (18.4) $ (10.0) $ 39.0