Leases - Operating Lease Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, to be Paid, Year One	$ 34
Lessee, Operating Lease, Liability, to be Paid, Year Two	31
Lessee, Operating Lease, Liability, to be Paid, Year Three	27
Lessee, Operating Lease, Liability, to be Paid, Year Four	26
Lessee, Operating Lease, Liability, to be Paid, Year Five	22
Lessee, Operating Lease, Liability, to be Paid, after Year Five	39
Total Minimum Lease Payments	179	$ 210
Public Service Electric and Gas Company [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, to be Paid, Year One	18
Lessee, Operating Lease, Liability, to be Paid, Year Two	15
Lessee, Operating Lease, Liability, to be Paid, Year Three	11
Lessee, Operating Lease, Liability, to be Paid, Year Four	10
Lessee, Operating Lease, Liability, to be Paid, Year Five	10
Lessee, Operating Lease, Liability, to be Paid, after Year Five	39
Total Minimum Lease Payments	103	116
Other Segments
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, to be Paid, Year One	16
Lessee, Operating Lease, Liability, to be Paid, Year Two	16
Lessee, Operating Lease, Liability, to be Paid, Year Three	16
Lessee, Operating Lease, Liability, to be Paid, Year Four	16
Lessee, Operating Lease, Liability, to be Paid, Year Five	12
Lessee, Operating Lease, Liability, to be Paid, after Year Five	0
Total Minimum Lease Payments	$ 76	$ 94