Retirement Benefits (Assumptions Used To Determine Net Periodic Benefit Cost) (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate at measurement date	4.75%	4.00%	4.50%
Expected return on plan assets	7.25%	7.50%	7.75%
Increase in future compensation	3.50%	3.50%	3.50%
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate at measurement date	4.75%	4.00%	4.50%
Expected return on plan assets	7.00%	7.25%	7.50%
Increase in future compensation	3.50%	3.50%	3.50%
Medical cost trend rate (initial)	5.00%	5.00%	5.50%
Medical cost trend rate (ultimate)	5.00%	5.00%	5.00%
Years to ultimate rate			1 year