Pension, OPEB and Savings Plans (Assumptions Used To Determine The Benefit Obligations And Net Periodic Benefit Costs) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	5.00%	4.20%	5.00%
Rate of Compensation Increase	4.61%	4.61%	4.61%
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	5.01%	4.20%	5.00%
Rate of Compensation Increase	4.61%	4.61%	4.61%
Administrative Expense	3.00%	3.00%	5.00%
Dental Costs	5.00%	6.00%	6.00%
Total of Service Cost and Interest Cost	$ 12	$ 12	$ 11
Postretirement Benefit Obligation	161	180	155
Total of Service Cost and Interest Cost	(9)	(9)	(9)
Postretirement Benefit Obligation	$ (134)	$ (149)	$ (128)
Other Benefits [Member] | Pre-65 Medical Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Immediate Rate	8.00%	8.88%	8.00%
Ultimate Rate	5.00%	5.00%	5.00%
Year Ultimate Rate Reached	2021	2023	2016
Other Benefits [Member] | Post-65 Medical Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Immediate Rate	7.88%	7.98%	8.25%
Ultimate Rate	5.00%	5.00%	5.00%
Year Ultimate Rate Reached	2021	2019	2017
Net Periodic Benefit Cost [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	4.20%	5.00%	5.40%
Expected Return on Plan Assets	8.00%	8.00%	8.50%
Rate of Compensation Increase	4.61%	4.61%	4.61%
Net Periodic Benefit Cost [Member] | Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	4.20%	5.00%	5.38%
Expected Return on Plan Assets	8.00%	8.00%	8.50%
Rate of Compensation Increase	4.61%	4.61%	4.61%