Income Taxes - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Taxes [Line Items]
Effective income tax rate reconciliation, at federal statutory income tax rate, percent	21.00%
Effective Income Tax Rate Reconciliation, Percent, Total	2.90%	16.80%	(2.90%)
Regulatory Liabilities	$ 2,271	$ 2,075
NOL Carryforwards	26
Tax Adjustment Credit	(145)	(232)	$ (193)
Income tax benefit	(53)	(518)	29
Unrecognized tax benefit, which would affect the effective tax rate if recognized	$ 178	$ 79	$ 85
Public Service Electric and Gas Company [Member]
Income Taxes [Line Items]
Effective Income Tax Rate Reconciliation, Percent, Total	16.20%	9.60%	14.60%
Regulatory Liabilities	$ 2,271	$ 2,075
NOL Carryforwards	108
Tax Adjustment Credit	(145)	(232)	$ (193)
Excess deferred income tax flowback	202
Income tax benefit	(298)	(160)	(267)
Unrecognized tax benefit, which would affect the effective tax rate if recognized	2	$ 2	$ 6
Public Service Electric and Gas Company [Member] | Nuclear PTCs
Income Taxes [Line Items]
Income tax benefit	350
Unrecognized tax benefit, which would affect the effective tax rate if recognized	89
Public Service Electric and Gas Company [Member] | Excess Deferred Income Taxes excluding amounts from previously realized repair deductions [Member]
Income Taxes [Line Items]
Regulatory Liabilities	1,800
Reduction in Regulatory Liability	122
Reduction in Deferred Tax Liabilities	$ 1,300