Leases (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) renewals	Dec. 31, 2022 USD ($)
Lessee, Lease, Description [Line Items]
Lessor leases carrying value	$ 179
Energy Holdings [Member]
Lessee, Lease, Description [Line Items]
Property, Plant, and Equipment, Lessor Asset under Operating Lease, after Accumulated Depreciation	10
Impairment of Long-Lived Assets to be Disposed of		$ 78
Public Service Electric and Gas Company
Lessee, Lease, Description [Line Items]
Operating lease liabilities, current	$ 15	12
Public Service Electric and Gas Company | Five year renewals
Lessee, Lease, Description [Line Items]
Number of lease renewal terms	4
Public Service Electric and Gas Company | Ten year renewals
Lessee, Lease, Description [Line Items]
Number of lease renewal terms	1
Lessor, Operating Lease, Number Of Renewal Periods	5
Public Service Electric and Gas Company | Forty Five year renewals
Lessee, Lease, Description [Line Items]
Number of lease renewal terms	1
Public Service Electric and Gas Company | Forty Eight Year renewals
Lessee, Lease, Description [Line Items]
Number of lease renewal terms	1
PSEG Power LLC [Member]
Lessee, Lease, Description [Line Items]
Number of lease renewal terms | renewals	1
PSEG
Lessee, Lease, Description [Line Items]
Operating lease liabilities, current	$ 27	$ 28
Services | Subsidiaries
Lessee, Lease, Description [Line Items]
Number of lease renewal terms	2