Organization, Basis Of Presentation And Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Power [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Basis Adjustment	$ (986)	$ (986)
PSE&G [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Basis Adjustment	$ 986	$ 986