Regulatory Assets And Liabilities (Schedule Of Regulatory Assets and Liabilities) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2019
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	$ 273	$ 369
Regulatory Assets, Noncurrent	5,157	4,404
Regulatory Liability, Current	349	384
Regulatory Liabilities, Noncurrent	2,075	2,240
Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	273	369
Regulatory Assets, Noncurrent	5,157	4,404
Total Regulatory Assets	5,430	4,773
Regulatory Liability, Current	349	384
Regulatory Liabilities, Noncurrent	2,075	2,240
Total Regulatory Liabilities	2,424	2,624
Flowback of tax benefits	80	35	$ 22
Tax Adjustment Credit [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	18	0
Excess Deferred Income Taxes [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	170	302
Regulatory Liabilities, Noncurrent	2,075	2,196
Other [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	22	22
Regulatory Liabilities, Noncurrent	0	13
Gas Costs - BGSS | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	97	35
Green Program Recovery Charge [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	20	24
Formula Rate True up | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	22	1
Regulatory Liabilities, Noncurrent	0	31
Tax Adjustment Credit [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	0	52
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	145
Green Program Recovery Charge [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	827	447
Pension and Other Postretirement Benefit Costs [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	1,427	1,405
Deferred Income Taxes [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	1,343	1,168
Manufactured Gas Plant (MGP) Remediation Costs [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	199	206
Base Rate Case [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	0	47
Remediation Adjustment Charge (Other SBC) [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	110	134
Conditional Asset Retirement Obligation [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	210	200
Electric and Gas Cost Of Removal [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	172	156
Other [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	198	145
Underrecovered Electric Costs Basic Generation Service [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	19	54
Societal Benefits Charges Sbc [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	6	20
Regulatory Assets, Noncurrent	149	145
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	131	137
Conservation Incentive Program | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	103	51
Regulatory Assets, Noncurrent	129	72
Clean Energy Future - Energy Cloud [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	153	$ 80
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	931
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	20
distributed related repair deductions [Member] | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Excess Deferred income taxes to be refunded	862
distribution related repair deduction | Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Excess Deferred income taxes to be refunded	$ 387