Organization, Basis Of Presentation And Summary Of Significant Accounting Policies (Schedule Of Excise And Gross Receipts Tax Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Operating Revenues	$ 2,636	$ 2,620	$ 2,469	$ 3,354	$ 2,745	$ 3,114	$ 2,361	$ 3,573	$ 11,079	$ 11,793	$ 12,035
PSE&G [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Operating Revenues	1,608	1,841	1,571	2,306	1,882	2,007	1,536	2,444	7,326	7,869	8,243
TEFA And GRT [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Operating Revenues									146	149	146
Taxes Other Than Income Taxes	$ 133				$ 136				$ 133	$ 136	$ 133