Pensions and Other Postretirement Benefit Plans (Narrative) (Details) $ in Millions	Dec. 31, 2015 USD ($)
United States [Member]
Defined Benefit Plan Disclosure [Line Items]
Accrued postretirement liability	$ 59.1
Canada [Member]
Defined Benefit Plan Disclosure [Line Items]
Accrued postretirement liability	$ 0.9
United States Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Percent of consolidated pension plan assets	45.00%
Percent of consolidated pension plan obligations	44.00%