Regulatory Assets And Liabilities - (Schedule Of Regulatory Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2018
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	$ 516		$ 273
Regulatory Assets, Noncurrent	6,125		5,157
Regulatory Liabilities, Current	555		349
Regulatory Liabilities, Noncurrent	2,271		2,075
Public Service Electric and Gas Company
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	6,641		5,430
Regulatory Assets, Current	516		273
Regulatory Assets, Noncurrent	6,125		5,157
Total Regulatory Liabilities	2,826		2,424
Regulatory Liabilities, Current	555		349
Regulatory Liabilities, Noncurrent	2,271		2,075
Public Service Electric and Gas Company | Tax Adjustment Credit [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets		$ 509		$ 581
Public Service Electric and Gas Company | Deferred Income Taxes [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	2,012		1,343
Public Service Electric and Gas Company | Pension and Other Postretirement Benefit Costs [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	1,330		1,427
Public Service Electric and Gas Company | Green Program Recovery Charges [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	1,251		827
Public Service Electric and Gas Company | Conservation Incentive Program [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	261		232
Public Service Electric and Gas Company | Clean Energy Future - Energy Cloud [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	233		153
Public Service Electric and Gas Company | Conditional Asset Retirement Obligation [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	221		210
Public Service Electric and Gas Company | Societal Benefits Charges Sbc [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	211		155
Public Service Electric and Gas Company | Manufactured Gas Plant Remediation Costs [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	210		199
Public Service Electric and Gas Company | Electric Cost Of Removal [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	195		172
Public Service Electric and Gas Company | New Jersey Clean Energy Program [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	145		145
Public Service Electric and Gas Company | COVID-19 Deferral [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	131		131
Public Service Electric and Gas Company | Base Rate Case [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	108		0
Public Service Electric and Gas Company | Remediation Adjustment Clause Other Sbc [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	102		110
Public Service Electric and Gas Company | Clean Energy Future-Electric Vehicles [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	51		27
Public Service Electric and Gas Company | Deferred Storm Costs [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	0		109
Public Service Electric and Gas Company | Other Regulatory Assets [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Assets	180		190
Public Service Electric and Gas Company | Excess Deferred Income Taxes [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Liabilities	2,619		2,245
Public Service Electric and Gas Company | Gas Costs - BGSS [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Liabilities	145		97
Public Service Electric and Gas Company | Other [Member]
Regulatory Assets And Liabilities [Line Items]
Total Regulatory Liabilities	$ 62		$ 82