Revenues - Disaggregation of Revenues (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues [Line Items]
Revenue from Contract with Customers		$ 9,874	$ 9,254	$ 11,231
Revenues Unrelated to Contracts with Customers	[1]	416	1,983	(1,431)
Total Operating Revenues		10,290	11,237	9,800
Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		(966)	(1,103)	(1,401)
Revenues Unrelated to Contracts with Customers	[1]	0	0	0
Total Operating Revenues	[2]	(966)	(1,103)	(1,401)
Electric Distribution [Member]
Revenues [Line Items]
Revenue from Contract with Customers		3,977	3,494	3,503
Electric Distribution [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0
Gas Distribution [Member]
Revenues [Line Items]
Revenue from Contract with Customers		2,059	1,982	2,356
Gas Distribution [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	(1)
Transmission [Member]
Revenues [Line Items]
Revenue from Contract with Customers		1,754	1,673	1,589
Transmission [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers			0	0
Electricity and Related Product Sales [Member] | PJM [Member] | Third-Party Sales [Member]
Revenues [Line Items]
Revenue from Contract with Customers		819	892	2,152
Electricity and Related Product Sales [Member] | PJM [Member] | Third-Party Sales [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0
Electricity and Related Product Sales [Member] | PJM [Member] | Sales to Affiliates [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0
Electricity and Related Product Sales [Member] | PJM [Member] | Sales to Affiliates [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		(114)	(114)	(151)
Electricity and Related Product Sales [Member] | NYISO [Member]
Revenues [Line Items]
Revenue from Contract with Customers				88
Electricity and Related Product Sales [Member] | NYISO [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers				0
Electricity and Related Product Sales [Member] | ISO-NE [Member]
Revenues [Line Items]
Revenue from Contract with Customers		5	13	96
Electricity and Related Product Sales [Member] | ISO-NE [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0
Gas Sales [Member] | Third-Party Sales [Member]
Revenues [Line Items]
Revenue from Contract with Customers		206	206	458
Gas Sales [Member] | Third-Party Sales [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0
Gas Sales [Member] | Sales to Affiliates [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0
Gas Sales [Member] | Sales to Affiliates [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		(846)	(984)	(1,243)
Other Revenues from Contracts with Customers [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	1,054	994	989
Other Revenues from Contracts with Customers [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	(6)	(5)	(6)
Public Service Electric and Gas Company [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		8,158	7,517	7,839
Revenues Unrelated to Contracts with Customers	[1]	291	290	96
Total Operating Revenues		8,449	7,807	7,935
Public Service Electric and Gas Company [Member] | Electric Distribution [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		3,977	3,494	3,503
Public Service Electric and Gas Company [Member] | Gas Distribution [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		2,059	1,982	2,357
Public Service Electric and Gas Company [Member] | Transmission [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		1,754	1,673	1,589
Public Service Electric and Gas Company [Member] | Electricity and Related Product Sales [Member] | PJM [Member] | Third-Party Sales [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0
Public Service Electric and Gas Company [Member] | Electricity and Related Product Sales [Member] | PJM [Member] | Sales to Affiliates [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0
Public Service Electric and Gas Company [Member] | Electricity and Related Product Sales [Member] | NYISO [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers				0
Public Service Electric and Gas Company [Member] | Electricity and Related Product Sales [Member] | ISO-NE [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0
Public Service Electric and Gas Company [Member] | Gas Sales [Member] | Third-Party Sales [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0
Public Service Electric and Gas Company [Member] | Gas Sales [Member] | Sales to Affiliates [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0
Public Service Electric and Gas Company [Member] | Other Revenues from Contracts with Customers [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	368	368	390
PSEG Power & Other [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	2,682	2,840	4,793
Revenues Unrelated to Contracts with Customers	[1],[4]	125	1,693	(1,527)
Total Operating Revenues	[4],[5]	2,807	4,533	3,266
PSEG Power & Other [Member] | Electric Distribution [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	0	0	0
PSEG Power & Other [Member] | Gas Distribution [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	0	0	0
PSEG Power & Other [Member] | Transmission [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]		0	0
PSEG Power & Other [Member] | Electricity and Related Product Sales [Member] | PJM [Member] | Third-Party Sales [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	819	892	2,152
PSEG Power & Other [Member] | Electricity and Related Product Sales [Member] | PJM [Member] | Sales to Affiliates [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	114	114	151
PSEG Power & Other [Member] | Electricity and Related Product Sales [Member] | NYISO [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]			88
PSEG Power & Other [Member] | Electricity and Related Product Sales [Member] | ISO-NE [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	5	13	96
PSEG Power & Other [Member] | Gas Sales [Member] | Third-Party Sales [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	206	206	458
PSEG Power & Other [Member] | Gas Sales [Member] | Sales to Affiliates [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	846	984	1,243
PSEG Power & Other [Member] | Other Revenues from Contracts with Customers [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3],[4]	$ 692	$ 631	$ 605

[1] Includes primarily alternative revenues at PSE&G principally from the CIP program and derivative contracts and lease contracts at PSEG Power & Other.

[2] Intercompany eliminations primarily relate to intercompany transactions between PSE&G and PSEG Power. For a further discussion of the intercompany transactions between PSE&G and PSEG Power, see Note 2. Revenues and Note 24. Related-Party Transactions.

[3] Includes primarily revenues from appliance repair services and the sale of solar renewable energy credits (SRECs) at auction at PSE&G. PSEG Power & Other includes PSEG LI’s OSA with LIPA and PSEG Power’s energy management fee with LIPA.

[4] Includes revenues applicable to PSEG Power, PSEG LI and Energy Holdings.

[5] PSEG Power & Other results include net after-tax gains (losses) of $(151) million, $959 million and $(457) million in the years ended December 31, 2024, 2023 and 2022, respectively, related to the impacts of non-trading commodity mark-to-market activity, which consists of the financial impact from positions with future delivery dates.