Organization, Basis Of Presentation And Summary Of Significant Accounting Policies (Amounts And Average Rates Used To Calculate IDC Or AFUDC) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
PSE&G [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
IDC/AFUDC	$ 44	$ 34	$ 33
Average Rate	8.09%	8.11%	8.43%
Power [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
IDC/AFUDC	$ 24	$ 23	$ 29
Average Rate	5.14%	5.36%	5.16%