Employee Benefit Plans Defined Benefit Plan Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) Rate
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year | $	$ 0.9
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Estimated Future Employer Contributions
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year | $	$ 2.0
Defined Benefit Plan, Plan Participants, Pre-65 [Member]
Defined Benefit Plan, Assumed Health Care Cost Trend Rates
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year	7.50%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate	5.00%
Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate	2022
Defined Benefit Plan, Plan Participants, Post-65 [Member]
Defined Benefit Plan, Assumed Health Care Cost Trend Rates
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year	7.00%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate	5.00%
Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate	2020