Pension Plans And Other Postretirement Benefit Plans (Investment Allocation Percentages By Asset Classes) (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target investment allocation	27.00%	47.00%
Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target investment allocation	58.00%	31.00%
Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Target investment allocation	6.00%	6.00%
Absolute Return [Member]
Defined Benefit Plan Disclosure [Line Items]
Target investment allocation	9.00%	12.00%
Other Return [Member]
Defined Benefit Plan Disclosure [Line Items]
Target investment allocation	0.00%	4.00%