Leases Reconciliation of Undiscounted Cash Flows (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Lessee, Lease, Description [Line Items]
Total Minimum Lease Payments	$ 235	$ 269
Reconciling Amount due to Discount Rate	(38)	(45)
Total Discounted Operating Lease Liabilities	197	224
Public Service Electric and Gas Company
Lessee, Lease, Description [Line Items]
Total Minimum Lease Payments	109	117
Reconciling Amount due to Discount Rate	(20)	(22)
Total Discounted Operating Lease Liabilities	89	95
Other Segments
Lessee, Lease, Description [Line Items]
Total Minimum Lease Payments	126	152
Reconciling Amount due to Discount Rate	(18)	(23)
Total Discounted Operating Lease Liabilities	$ 108	$ 129