Leases Operating Lease Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Lessee, Operating Lease, Liability, to be Paid, Year One	$ 35
Lessee, Operating Lease, Liability, to be Paid, Year Two	28
Lessee, Operating Lease, Liability, to be Paid, Year Three	25
Lessee, Operating Lease, Liability, to be Paid, Year Four	23
Lessee, Operating Lease, Liability, to be Paid, Year Five	24
Lessee, Operating Lease, Liability, to be Paid, after Year Five	100
Total Minimum Lease Payments	235	$ 269
Public Service Electric and Gas Company
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Lessee, Operating Lease, Liability, to be Paid, Year One	15
Lessee, Operating Lease, Liability, to be Paid, Year Two	12
Lessee, Operating Lease, Liability, to be Paid, Year Three	10
Lessee, Operating Lease, Liability, to be Paid, Year Four	8
Lessee, Operating Lease, Liability, to be Paid, Year Five	8
Lessee, Operating Lease, Liability, to be Paid, after Year Five	56
Total Minimum Lease Payments	109	117
Other Segments
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Lessee, Operating Lease, Liability, to be Paid, Year One	20
Lessee, Operating Lease, Liability, to be Paid, Year Two	16
Lessee, Operating Lease, Liability, to be Paid, Year Three	15
Lessee, Operating Lease, Liability, to be Paid, Year Four	15
Lessee, Operating Lease, Liability, to be Paid, Year Five	16
Lessee, Operating Lease, Liability, to be Paid, after Year Five	44
Total Minimum Lease Payments	$ 126	$ 152