Organization, Basis Of Presentation And Summary Of Significant Accounting Policies (Depreciation Rate Stated Percentage) (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
General Plant Assets [Member] | Minimum | PSEG Power LLC
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	3 years
General Plant Assets [Member] | Maximum [Member] | PSEG Power LLC
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	20 years
Fossil Production [Member] | Minimum | PSEG Power LLC
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	30 years
Fossil Production [Member] | Maximum [Member] | PSEG Power LLC
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	56 years
Nuclear Production [Member] | Minimum | PSEG Power LLC
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	60 years
Nuclear Production [Member] | Maximum [Member] | PSEG Power LLC
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	80 years
Solar Assets [Member] | Minimum | PSEG Power LLC
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	25 years
Solar Assets [Member] | Maximum [Member] | PSEG Power LLC
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	35 years
Electric Transmission [Member] | Public Service Electric and Gas Company
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Depreciation Rate	2.41%	2.41%	2.42%
Electric Distribution [Member] | Public Service Electric and Gas Company
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Depreciation Rate	2.55%	2.54%	2.51%
Gas Distribution [Member] | Public Service Electric and Gas Company
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Depreciation Rate	1.84%	1.85%	1.61%