Regulatory Assets And Liabilities (Significant Orders and Pending Filings) (Details)	1 Months Ended										12 Months Ended
	Feb. 28, 2024 USD ($)	Dec. 31, 2023 USD ($)	Oct. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jul. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)	May 31, 2023 USD ($)	Apr. 30, 2023 USD ($)	Feb. 28, 2023 USD ($)	Jan. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	May 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2019 USD ($)
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets		$ 5,157,000,000									$ 5,157,000,000		$ 4,404,000,000
Public Utility Distribution Capital investment since prior rate case		3,000,000,000									3,000,000,000
Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
ZEC Charge per kwh											0.004
Regulatory Assets		5,430,000,000									5,430,000,000		4,773,000,000
Regulatory Assets		5,157,000,000									5,157,000,000		4,404,000,000
Public Service Electric and Gas Company | ZEC Liability
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount										$ (1,300,000)
ZEC purchases												$ 165,000,000
ZEC Charge per MWh												$ 9.88
Tax Adjustment Credits Electric Distribution [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount					$ 17,000,000
Tax Adjustment Credits Gas Distribution [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount					$ (42,000,000)
Remediation Adjustment Clause [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount										44,000,000
Electric Societal Benefits Clause | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount										52,000,000
Gas Societal Benefit Clause | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount										$ 32,000,000
Subsequent Event [Member] | Tax Adjustment Credits Electric Distribution [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount	$ 61,000,000
Subsequent Event [Member] | Tax Adjustment Credits Gas Distribution [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount	40,000,000
Solar or EE Recovery Charge (RRC) [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets		827,000,000									827,000,000		447,000,000
Societal Benefits Charges Sbc [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets		149,000,000									149,000,000		145,000,000
Societal Benefits Charges Sbc [Member] | Electric Bad Debt Deferral | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets		149,000,000									149,000,000
Tax Adjustment Credit [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets														$ 581,000,000
COVID-19 Deferral | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets		131,000,000									131,000,000		$ 137,000,000
COVID-19 Deferral - Bad Debt portion [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets		$ 68,000,000									$ 68,000,000
Gas System Modernization Program II [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount							$ 11,000,000
Formula Rate True up | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount			$ 58,000,000			$ (21,000,000)
Basic Gas Supply Service | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Approved BGSS rate per therm		0.40						0.47			0.40		0.65
BGSS self implementing increase (decrease)		(0.25)							(0.03)	(0.15)	(0.25)
Gas Green Program Recovery [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount							5,000,000
Gas Green Program Recovery [Member] | Subsequent Event [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount	15,000,000
Electric Green Program Recovery [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount							87,000,000
Electric Green Program Recovery [Member] | Subsequent Event [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount	49,000,000
Conservation Incentive Program | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets		$ 129,000,000									$ 129,000,000		$ 72,000,000
Energy Strong II Electric | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount			$ 9,000,000					$ 16,000,000
Energy Strong II Electric | Subsequent Event [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount	13,000,000
Energy Strong II Gas | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount								4,000,000
Conservation Incentive Program Electric | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount		75,000,000							$ 52,000,000
Conservation Incentive Program Electric | Subsequent Event [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount	99,000,000
Conservation Incentive Program Gas First Twelve Months | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount				$ 99,000,000
Conservation Incentive Program Gas After Twelve Months | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount				11,000,000
distribution base rate case | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount		826,000,000
Conservation Incentive Program Electric First Twelve Months | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount									18,000,000
Conservation Incentive Program After Twelve Months | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount									$ 34,000,000
Conservation Incentive Program Gas | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount				$ 110,000,000				$ 53,000,000
Clean Energy Future-EE | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount							$ 280,000,000
Pension Ratemaking deferral | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets		$ 55,000,000									$ 55,000,000
Infrastructure Advancement Program | Subsequent Event [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 5,000,000