Employee Benefits (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016 USD ($)
Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Employer Contribution	$ 1.8
Defined Benefit Plan, Expected Contributions in Current Fiscal Year	6.2
Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Employer Contribution	0.6
Defined Benefit Plan, Expected Contributions in Current Fiscal Year	$ 1.7