Revenues Revenues (Details) $ in Millions		3 Months Ended
		Mar. 31, 2024 USD ($) $ / mwd MW	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)
Revenues [Line Items]
Revenue from Contract with Customers		$ 2,702	$ 2,709
Revenues Unrelated to Contracts with Customers	[1]	58	1,046
Total Operating Revenues		2,760	3,755
Regulatory Assets		5,374		$ 5,157
Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		(445)	(565)
Revenues Unrelated to Contracts with Customers	[1]	0	0
Total Operating Revenues	[2]	(445)	(565)
Electric Distribution Contracts [Member]
Revenues [Line Items]
Revenue from Contract with Customers		781	730
Electric Distribution Contracts [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0
Gas Distribution [Member]
Revenues [Line Items]
Revenue from Contract with Customers		922	958
Gas Distribution [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	(1)
Electric Transmission [Member]
Revenues [Line Items]
Revenue from Contract with Customers		436	425
Electric Transmission [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0
Electricity and Related Products [Member] | PJM [Member] | Third Party Sales [Member]
Revenues [Line Items]
Revenue from Contract with Customers		227	276
Electricity and Related Products [Member] | PJM [Member] | Third Party Sales [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0
Electricity and Related Products [Member] | PJM [Member] | Sales to Affiliates [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0
Electricity and Related Products [Member] | PJM [Member] | Sales to Affiliates [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		(30)	(31)
Electricity and Related Products [Member] | ISO New England [Member]
Revenues [Line Items]
Revenue from Contract with Customers		3	3
Electricity and Related Products [Member] | ISO New England [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0
Gas Sales [Member] | Third Party Sales [Member]
Revenues [Line Items]
Revenue from Contract with Customers		76	86
Gas Sales [Member] | Third Party Sales [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0
Gas Sales [Member] | Sales to Affiliates [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0
Gas Sales [Member] | Sales to Affiliates [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		(414)	(533)
Other Revenues from Contracts with Customers [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	257	231
Other Revenues from Contracts with Customers [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	$ (1)	0
Public Service Electric and Gas Company [Member]
Revenues [Line Items]
Allowances percentage of accounts receivable		16.00%		18.00%
Public Service Electric and Gas Company [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		$ 2,223	2,192
Revenues Unrelated to Contracts with Customers	[1]	110	101
Total Operating Revenues		2,333	2,293
Public Service Electric and Gas Company [Member] | Electric Distribution Contracts [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		781	730
Public Service Electric and Gas Company [Member] | Gas Distribution [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		922	959
Public Service Electric and Gas Company [Member] | Electric Transmission [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		436	425
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
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
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
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
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
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]	$ 84	78
PSEG Power [Member] | PJM [Member] | June 2023 to May 2024 [Member]
Revenues [Line Items]
Dollars Per Megawatt-Day | $ / mwd		50
Load (MW) | MW		3,700
PSEG Power [Member] | PJM [Member] | June 2024 to May 2025
Revenues [Line Items]
Dollars Per Megawatt-Day | $ / mwd		65
Load (MW) | MW		3,700
Other [Member] | LIPA OSA contract fixed component [Member]
Revenues [Line Items]
Anticipated Contract Revenues		$ 44
PSEG Power & Other | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	924	1,082
Revenues Unrelated to Contracts with Customers	[1],[4]	(52)	945
Total Operating Revenues	[4]	872	2,027
PSEG Power & Other | Electric Distribution Contracts [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	0	0
PSEG Power & Other | Gas Distribution [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	0	0
PSEG Power & Other | Electric Transmission [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	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]	227	276
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]	30	31
PSEG Power & Other | Electricity and Related Products [Member] | ISO New England [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	3	3
PSEG Power & Other | Gas Sales [Member] | Third Party Sales [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	76	86
PSEG Power & Other | Gas Sales [Member] | Sales to Affiliates [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	414	533
PSEG Power & Other | Other Revenues from Contracts with Customers [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3],[4]	174	153
Public Service Electric and Gas Company [Member]
Revenues [Line Items]
Total Operating Revenues		2,333	2,293
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		283	339
Provision for Other Credit Losses		26	9
Accounts Receivable, Allowance for Credit Loss, Writeoff		(36)	(29)
Accounts Receivable, Allowance for Credit Loss, Recovery		7	7
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		273	319
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		273	$ 319	$ 283
Regulatory Assets		5,374		$ 5,157
Public Service Electric and Gas Company [Member] | COVID-19 Deferral - Bad Debt portion
Revenues [Line Items]
Regulatory Assets		68
Public Service Electric and Gas Company [Member] | Societal Benefits Charges Sbc | Electric Bad Debt Deferral
Revenues [Line Items]
Regulatory Assets		$ 152

[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.