Income Taxes - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Taxes [Line Items]
U.S. Federal Statutory Tax Rate, Percent	21.00%	21.00%	21.00%
Effective Tax Rate, Percent	11.10%	2.90%	16.80%
Regulatory Liabilities	$ 2,048	$ 2,271
NOL Carryforwards	11
TAC	313	145	$ 232
Income tax benefit	(263)	(53)	(518)
Unrecognized tax benefit, which would affect the effective tax rate if recognized	$ 164	$ 178	$ 79
Public Service Electric and Gas Company [Member]
Income Taxes [Line Items]
U.S. Federal Statutory Tax Rate, Percent	21.00%	21.00%	21.00%
Effective Tax Rate, Percent	8.00%	16.20%	9.60%
Regulatory Liabilities	$ 2,048	$ 2,271
NOL Carryforwards	120
TAC	313	145	$ 232
Excess deferred income tax flowback	436
Income tax benefit	(152)	(298)	(160)
Unrecognized tax benefit, which would affect the effective tax rate if recognized	4	2	2
Paid federal income taxes	8	68	$ 77
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	1,700
Reduction in Regulatory Liability	355
Reduction in Deferred Tax Liabilities	$ 1,200