Retirement Benefits Plans (Assumptions Used to Determine Defined Benefit Plan and Postretirement Benefit Plans Expense (Benefit) (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan
Defined benefit plan and postretirement benefit plans expense (benefit)
Discount Rate (as a percent)	0.00%	4.55%	3.65%
Long term expected rate of return on plan assets (as a percent)	0.00%	4.90%	7.10%
Postretirement Benefit Plans
Defined benefit plan and postretirement benefit plans expense (benefit)
Discount Rate (as a percent)	3.45%	4.15%	3.30%
Long term expected rate of return on plan assets (as a percent)	0.00%	0.00%	0.00%