Revenues - Disaggregation of Revenues (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenues [Line Items]
Revenue from Contract with Customers		$ 2,560	$ 2,182	$ 5,947	$ 4,884
Revenues Unrelated to Contracts with Customers	[1]	245	241	80	299
Total Operating Revenues		2,805	2,423	6,027	5,183
Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		(146)	(125)	(680)	(570)
Revenues Unrelated to Contracts with Customers	[1]	0	0	0	0
Total Operating Revenues	[2]	(146)	(125)	(680)	(570)
Electric Distribution [Member]
Revenues [Line Items]
Revenue from Contract with Customers		1,174	983	2,118	1,764
Electric Distribution [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0	0
Gas Distribution [Member]
Revenues [Line Items]
Revenue from Contract with Customers		317	301	1,460	1,223
Gas Distribution [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0	0
Transmission [Member]
Revenues [Line Items]
Revenue from Contract with Customers		443	436	882	872
Transmission [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0	0
Electricity and Related Product Sales [Member] | Third-Party Sales [Member]
Revenues [Line Items]
Revenue from Contract with Customers		303	169	756	110
Electricity and Related Product Sales [Member] | Third-Party Sales [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0	0
Electricity and Related Product Sales [Member] | Sales to Affiliates [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0		0	0
Electricity and Related Product Sales [Member] | Sales to Affiliates [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		(16)	(26)	(48)	(56)
Gas Sales [Member] | Third-Party Sales [Member]
Revenues [Line Items]
Revenue from Contract with Customers		44	34	184	399
Gas Sales [Member] | Third-Party Sales [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	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		(128)	(97)	(629)	(511)
Other Revenues from Contracts with Customers [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	279	259	547	516
Other Revenues from Contracts with Customers [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	(2)	(2)	(3)	(3)
Public Service Electric and Gas Company [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		2,031	1,812	4,648	4,035
Revenues Unrelated to Contracts with Customers	[1]	0	51	47	161
Total Operating Revenues		2,031	1,863	4,695	4,196
Public Service Electric and Gas Company [Member] | Electric Distribution [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		1,174	983	2,118	1,764
Public Service Electric and Gas Company [Member] | Gas Distribution [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		317	301	1,460	1,223
Public Service Electric and Gas Company [Member] | Transmission [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		443	436	882	872
Public Service Electric and Gas Company [Member] | Electricity and Related Product Sales [Member] | Third-Party Sales [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0	0
Public Service Electric and Gas Company [Member] | Electricity and Related Product Sales [Member] | Sales to Affiliates [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	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	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	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]	97	92	188	176
PSEG Power & Other [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	675	495	1,979	1,419
Revenues Unrelated to Contracts with Customers	[1],[4]	245	190	33	138
Total Operating Revenues	[4],[5]	920	685	2,012	1,557
PSEG Power & Other [Member] | Electric Distribution [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	0	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	0
PSEG Power & Other [Member] | Transmission [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	0	0	0	0
PSEG Power & Other [Member] | Electricity and Related Product Sales [Member] | Third-Party Sales [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	303	169	756	110
PSEG Power & Other [Member] | Electricity and Related Product Sales [Member] | Sales to Affiliates [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	16	26	48	56
PSEG Power & Other [Member] | Gas Sales [Member] | Third-Party Sales [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	44	34	184	399
PSEG Power & Other [Member] | Gas Sales [Member] | Sales to Affiliates [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	128	97	629	511
PSEG Power & Other [Member] | Other Revenues from Contracts with Customers [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3],[4]	$ 184	$ 169	$ 362	$ 343

[1] Includes alternative revenues at PSE&G, including CIP, Green Program Recovery Charge (GPRC) and transmission over or under recoveries, which are authorized to be collected or refunded in future periods, 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 17. 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 $136 million and $114 million for the three months and $1 million and $(72) million for the six months ended June 30, 2025 and 2024, 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.