Employee Benefits (Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2015 USD ($)
Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Employer Contribution	$ 10.4
Defined Benefit Plan, Expected Contributions in Current Fiscal Year	11.1
Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Employer Contribution	0.0
Defined Benefit Plan, Expected Contributions in Current Fiscal Year	$ 0.0