Revenues - Reconciliation of Allowance for Credit Losses (Details) - Public Service Electric and Gas Company [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenues [Line Items]
Balance	$ 234	$ 273	$ 215	$ 283
Provision	22	19	59	45
Write-offs, net of Recoveries	(30)	(39)	(48)	(75)
Balance	$ 226	$ 253	$ 226	$ 253