Revenues Revenues (Details) $ in Millions		1 Months Ended	3 Months Ended		6 Months Ended
		Jun. 30, 2024 USD ($) $ / mwd MW	Jun. 30, 2024 USD ($) $ / mwd MW	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) $ / mwd MW	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Revenues [Line Items]
Revenue from Contract with Customers			$ 2,182	$ 1,991	$ 4,884	$ 4,700
Revenues Unrelated to Contracts with Customers	[1]		241	430	299	1,476
Total Operating Revenues			2,423	2,421	5,183	6,176
Regulatory Assets		$ 5,479	5,479		5,479		$ 5,157
Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers			(125)	(143)	(570)	(708)
Revenues Unrelated to Contracts with Customers	[1]		0	0	0	0
Total Operating Revenues	[2]		(125)	(143)	(570)	(708)
Electric Distribution Contracts [Member]
Revenues [Line Items]
Revenue from Contract with Customers			983	784	1,764	1,514
Electric Distribution Contracts [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			301	274	1,223	1,233
Gas Distribution [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers			0	0	0	0
Electric Transmission [Member]
Revenues [Line Items]
Revenue from Contract with Customers			436	447	872	872
Electric Transmission [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers			0	0	0	0
Electricity and Related Products [Member] | PJM [Member] | Third Party Sales [Member]
Revenues [Line Items]
Revenue from Contract with Customers			167	211	394	487
Electricity and Related Products [Member] | PJM [Member] | Third Party Sales [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers			0	0	0	0
Electricity and Related Products [Member] | PJM [Member] | Sales to Affiliates [Member]
Revenues [Line Items]
Revenue from Contract with Customers			0	0	0	0
Electricity and Related Products [Member] | PJM [Member] | Sales to Affiliates [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers			(26)	(27)	(56)	(58)
Electricity and Related Products [Member] | ISO New England [Member]
Revenues [Line Items]
Revenue from Contract with Customers			2	3	5	6
Electricity and Related Products [Member] | ISO New England [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers			0	0	0	0
Gas Sales [Member] | Third Party Sales [Member]
Revenues [Line Items]
Revenue from Contract with Customers			34	26	110	112
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	0
Gas Sales [Member] | Sales to Affiliates [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers			(97)	(115)	(511)	(648)
Other Revenues from Contracts with Customers [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]		259	246	516	476
Other Revenues from Contracts with Customers [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]		$ (2)	(1)	$ (3)	(2)
Public Service Electric and Gas Company [Member]
Revenues [Line Items]
Allowances percentage of accounts receivable		16.00%	16.00%		16.00%		18.00%
Public Service Electric and Gas Company [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers			$ 1,812	1,599	$ 4,035	3,791
Revenues Unrelated to Contracts with Customers	[1]		51	63	161	164
Total Operating Revenues			1,863	1,662	4,196	3,955
Public Service Electric and Gas Company [Member] | Electric Distribution Contracts [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers			983	784	1,764	1,514
Public Service Electric and Gas Company [Member] | Gas Distribution [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers			301	274	1,223	1,233
Public Service Electric and Gas Company [Member] | Electric Transmission [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers			436	447	872	872
Public Service Electric and Gas Company [Member] | Electricity and Related Products [Member] | PJM [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 Products [Member] | PJM [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] | Electricity and Related Products [Member] | ISO New England [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]		$ 92	94	$ 176	172
PSEG Power [Member] | PJM [Member] | June 2023 to May 2024 [Member]
Revenues [Line Items]
Dollars Per Megawatt-Day | $ / mwd		50	50		50
Load (MW) | MW		3,700	3,700		3,700
PSEG Power [Member] | PJM [Member] | June 2024 to May 2025
Revenues [Line Items]
Dollars Per Megawatt-Day | $ / mwd		61	61		61
Load (MW) | MW		3,700	3,700		3,700
Other [Member] | LIPA OSA contract fixed component [Member]
Revenues [Line Items]
Anticipated Contract Revenues		$ 44	$ 44		$ 44
PSEG Power & Other | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]		495	535	1,419	1,617
Revenues Unrelated to Contracts with Customers	[1],[4]		190	367	138	1,312
Total Operating Revenues	[4]		685	902	1,557	2,929
PSEG Power & Other | Electric Distribution Contracts [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]		0	0	0	0
PSEG Power & Other | Gas Distribution [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]		0	0	0	0
PSEG Power & Other | Electric Transmission [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]		0	0	0	0
PSEG Power & Other | Electricity and Related Products [Member] | PJM [Member] | Third Party Sales [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]		167	211	394	487
PSEG Power & Other | Electricity and Related Products [Member] | PJM [Member] | Sales to Affiliates [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]		26	27	56	58
PSEG Power & Other | Electricity and Related Products [Member] | ISO New England [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]		2	3	5	6
PSEG Power & Other | Gas Sales [Member] | Third Party Sales [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]		34	26	110	112
PSEG Power & Other | Gas Sales [Member] | Sales to Affiliates [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]		97	115	511	648
PSEG Power & Other | Other Revenues from Contracts with Customers [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3],[4]		169	153	343	306
Public Service Electric and Gas Company [Member]
Revenues [Line Items]
Total Operating Revenues			1,863	1,662	4,196	3,955
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses			273	319	283	339
Provision for Other Credit Losses			19	15	45	24
Accounts Receivable, Allowance for Credit Loss, Writeoff			(39)	(40)	(75)	(69)
Accounts Receivable, Allowance for Credit Loss, Recovery			7	6	14	13
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		253	253	294	253	294
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		253	253	$ 294	253	$ 294	$ 283
Regulatory Assets		5,479	5,479		5,479		$ 5,157
Public Service Electric and Gas Company [Member] | COVID-19 Deferral - Bad Debt portion
Revenues [Line Items]
Regulatory Assets		68	68		68
Public Service Electric and Gas Company [Member] | Societal Benefits Charges Sbc | Electric Bad Debt Deferral
Revenues [Line Items]
Regulatory Assets		139	$ 139		$ 139
Public Utilities, Approved Rate Increase (Decrease), Amount		$ 78

[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 18. 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.