Regulatory Assets And Liabilities (Schedule Of Regulatory Assets and Liabilities) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2018
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	$ 369	$ 364
Regulatory Assets, Noncurrent	4,404	3,605
Regulatory Liability, Current	384	388
Regulatory Liabilities, Noncurrent	2,240	2,497
Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	369	364
Regulatory Assets, Noncurrent	4,404	3,605
Total Regulatory Assets	4,773	3,969
Regulatory Liability, Current	384	388
Regulatory Liabilities, Noncurrent	2,240	2,497
Total Regulatory Liabilities	2,624	2,885
Flowback of tax benefits	35	22	$ 31
Public Service Electric and Gas Company | Electric meters to be retired
Regulatory Assets And Liabilities [Line Items]
Total Transmission and Distribution	168	192
Excess Deferred Income Taxes [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	302	288
Regulatory Liabilities, Noncurrent	2,196	2,443
Other [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	22	34
Regulatory Liabilities, Noncurrent	13	45
Gas Costs - BGSS | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	35	5
Green Program Recovery Charge [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	24	19
Formula Rate True up | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	1	42
Regulatory Liabilities, Noncurrent	31	9
Tax Adjustment Credit [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	52	44
Total Regulatory Assets				$ 581
Total Regulatory Liabilities				$ 581
New Jersey Clean Energy Program [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	145	146
Green Program Recovery Charge [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	447	211
Pension and Other Postretirement Benefit Costs [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	1,405	1,043
Deferred Income Taxes [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	1,168	1,064
Manufactured Gas Plant (MGP) Remediation Costs [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	206	220
Base Rate Case [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	47	56
Regulatory Assets, Noncurrent	0	47
Remediation Adjustment Charge (Other SBC) [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	134	156
Conditional Asset Retirement Obligation [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	200	191
Electric and Gas Cost Of Removal [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	156	174
Other [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	0	15
Regulatory Assets, Noncurrent	145	118
Underrecovered Electric Costs Basic Generation Service [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	54	67
Societal Benefits Charges Sbc [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	20	0
Regulatory Assets, Noncurrent	145	139
Deferred Storm Costs | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	109	109
COVID-19 Deferral | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	137	116
Conservation Incentive Program | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	51	36
Regulatory Assets, Noncurrent	72	12
Clean Energy Future - Energy Cloud [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	80	$ 5
Transmission related over remaining useful life [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Excess Deferred income taxes to be refunded	933
unprotected distribution related over remaining useful life [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Excess Deferred income taxes to be refunded	203
protected distribution related over remaining useful life [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Excess Deferred income taxes to be refunded	882
distributed related repair deductions [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Excess Deferred income taxes to be refunded	$ 425