Pension, OPEB and Savings Plans (Schedule Of Amount Paid For Employer Matching Contributions) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Total Employer Matching Contributions	$ 32	$ 24	$ 17
Power [Member]
Total Employer Matching Contributions	10	8	5
PSE&G [Member]
Total Employer Matching Contributions	18	14	9
Other [Member]
Total Employer Matching Contributions	$ 4	$ 2	$ 3