Regulatory Assets And Liabilities (Significant Orders and Pending Filings) (Details)	1 Months Ended										12 Months Ended
	Feb. 28, 2023 USD ($)	Jan. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Nov. 30, 2022 USD ($)	Oct. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Jul. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	May 31, 2022 USD ($)	Apr. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2018 USD ($)
Regulatory Assets And Liabilities [Line Items]
ZEC Charge per kwh											$ 0.004
Regulatory Assets			$ 4,404,000,000								4,404,000,000	$ 3,605,000,000
Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
ZEC Charge per kwh											0.004
Regulatory Assets			4,773,000,000								4,773,000,000	3,969,000,000
Regulatory Assets			4,404,000,000								4,404,000,000	3,605,000,000
Public Service Electric and Gas Company | ZEC Liability
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount										$ (4,000,000)
Public Utilities, Requested Rate Increase (Decrease), Amount					$ (1,300,000)
ZEC purchases											161,000,000
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								$ 15,000,000
Public Utilities, Requested 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								31,000,000
Public Utilities, Requested Rate Increase (Decrease), Amount					(70,000,000)
Remediation Adjustment Clause [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount						$ 44,000,000
Subsequent Event [Member] | 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
Subsequent Event [Member] | 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
Subsequent Event [Member] | 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
Solar or EE Recovery Charge (RRC) [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets			447,000,000								447,000,000	211,000,000
Societal Benefits Charges Sbc [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets			145,000,000								145,000,000	139,000,000
Societal Benefits Charges Sbc [Member] | Electric Bad Debt Deferral | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets			145,000,000								145,000,000
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			137,000,000								137,000,000	116,000,000
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				$ 23,000,000					$ 25,000,000
Public Utilities, Requested 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								(1,000,000)
Public Utilities, Requested Rate Increase (Decrease), Amount					$ 69,000,000
Green Program Recovery electric portion [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount								400,000
Basic Gas Supply Service | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Proposed BGSS rate per therm						0.50
Approved BGSS rate per therm						0.65				0.41
Basic Gas Supply Service | Subsequent Event [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
BGSS self implementing increase (decrease)		0.15
Gas Green Program Recovery [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount								1,000,000
Public Utilities, Requested Rate Increase (Decrease), Amount							$ 8,000,000
Electric Green Program Recovery [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount								4,000,000
Public Utilities, Requested Rate Increase (Decrease), Amount							$ 110,000,000
Public Utilities, Requested Program extension amount						$ 320,000,000
Conservation Incentive Program | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount						$ 53,000,000		52,000,000
Regulatory Assets			$ 72,000,000								$ 72,000,000	$ 12,000,000
Conservation Incentive Program | Subsequent Event [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 54,000,000
Energy Strong II Electric | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount									17,000,000
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	16,000,000
Energy Strong II Gas | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount									$ 1,000,000
Energy Strong II Gas | Subsequent Event [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 4,000,000
Solar Successor Incentive | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount								38,000,000
Conservation Incentive Program 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