Retirement, Other Postretirement Benefits, And Defined Contribution Plans (Actuarial Assumptions Used In Determining Pension And Other Postretirement Benefit Obligation) (Details) (Pension PBO And Other Postretirement Benefit APBO [Member])	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Weighted-average rate of increase in future compensation levels	4.23%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate	4.75%
Pre-65 Retirees [Member]
Defined Benefit Plan Disclosure [Line Items]
Assumed health care cost trend rate	7.10%	7.25%
Post - 65 Retirees [Member]
Defined Benefit Plan Disclosure [Line Items]
Assumed health care cost trend rate	7.70%	7.00%
Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Blended weighted-average discount rate	4.27%	5.14%
Other Postretirement [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted-average discount rate	4.23%
Non-Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted-average discount rate	3.61%
Minimum [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted-average discount rate	4.03%	5.04%
Maximum [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted-average discount rate	4.40%	5.26%