Organization, Basis Of Presentation And Summary Of Significant Accounting Policies (Depreciation Rate Stated Percentage) (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
General Plant Assets [Member] | Minimum [Member] | Power [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	3 years
General Plant Assets [Member] | Maximum [Member] | Power [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	20 years
Fossil Production [Member] | Minimum [Member] | Power [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	30 years
Fossil Production [Member] | Maximum [Member] | Power [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	70 years
Nuclear Production [Member] | Power [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	60 years
Pumped Storage Facilities [Member] | Power [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	76 years
Solar Assets [Member] | Power [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	25 years
Electric Transmission [Member] | PSE&G [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Depreciation Rate	2.41%	2.39%	2.42%
Electric Distribution [Member] | PSE&G [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Depreciation Rate	2.51%	2.49%	2.50%
Gas Distribution [Member] | PSE&G [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Depreciation Rate	1.63%	1.63%	1.64%