Leases Reconciliation of Undiscounted Cash Flows (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Lessee, Lease, Description [Line Items]
Total Minimum Lease Payments	$ 236	$ 235
Reconciling Amount due to Discount Rate	(36)	(38)
Total Discounted Operating Lease Liabilities	200	197
Public Service Electric and Gas Company
Lessee, Lease, Description [Line Items]
Total Minimum Lease Payments	125	109
Reconciling Amount due to Discount Rate	(21)	(20)
Total Discounted Operating Lease Liabilities	104	89
Other Segments
Lessee, Lease, Description [Line Items]
Total Minimum Lease Payments	111	126
Reconciling Amount due to Discount Rate	(15)	(18)
Total Discounted Operating Lease Liabilities	$ 96	$ 108