Leases Operating Lease Liabilities (Details) $ in Millions	Jun. 30, 2019 USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2019	$ 22
2020	42
2021	39
2022	38
2023	31
2024	24
Thereafter	198
Total Minimum Lease Payments	394
Public Service Electric and Gas Company [Member]
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2019	7
2020	13
2021	10
2022	8
2023	8
2024	7
Thereafter	60
Total Minimum Lease Payments	113
PSEG Power [Member]
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2019	7
2020	13
2021	13
2022	14
2023	8
2024	3
Thereafter	48
Total Minimum Lease Payments	106
Other
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2019	8
2020	16
2021	16
2022	16
2023	15
2024	14
Thereafter	90
Total Minimum Lease Payments	$ 175