Revenues Revenues (Details) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2023 USD ($) $ / mwd MW	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) $ / mwd MW	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Revenues [Line Items]
Revenue from Contract with Customers		$ 2,364	$ 2,874	$ 7,021	$ 8,502
Revenues Unrelated to Contracts with Customers	[1]	92	(602)	1,611	(1,841)
Total Operating Revenues		2,456	2,272	8,632	6,661
Regulatory Assets		4,911		4,911		$ 4,404
Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		(89)	(114)	(797)	(935)
Revenues Unrelated to Contracts with Customers	[1]	0	0	0	0
Total Operating Revenues	[2]	(89)	(114)	(797)	(935)
Electric Distribution Contracts [Member]
Revenues [Line Items]
Revenue from Contract with Customers		1,281	1,282	2,795	2,838
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		147	160	1,380	1,523
Gas Distribution [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0	(1)
Electric Transmission [Member]
Revenues [Line Items]
Revenue from Contract with Customers		422	400	1,251	1,188
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		216	633	703	1,690
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		(32)	(34)	(90)	(125)
Electricity and Related Products [Member] | NY ISO [Member]
Revenues [Line Items]
Revenue from Contract with Customers					88
Electricity and Related Products [Member] | NY ISO [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers					0
Electricity and Related Products [Member] | ISO New England [Member]
Revenues [Line Items]
Revenue from Contract with Customers		3	4	9	93
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		44	144	156	357
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		(55)	(77)	(703)	(805)
Other Revenues from Contracts with Customers [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	251	251	727	725
Other Revenues from Contracts with Customers [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	$ (2)	(3)	$ (4)	(4)
Public Service Electric and Gas Company [Member]
Revenues [Line Items]
Allowances percentage of accounts receivable		20.00%		20.00%		20.00%
Public Service Electric and Gas Company [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		$ 1,940	1,936	$ 5,688	5,823
Revenues Unrelated to Contracts with Customers	[1]	59	17	266	82
Total Operating Revenues		1,999	1,953	5,954	5,905
Public Service Electric and Gas Company [Member] | Electric Distribution Contracts [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		1,281	1,282	2,795	2,838
Public Service Electric and Gas Company [Member] | Gas Distribution [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		147	160	1,380	1,524
Public Service Electric and Gas Company [Member] | Electric Transmission [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers		422	400	1,251	1,188
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] | NY ISO [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers					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]	90	94	262	273
PSEG Power [Member]
Revenues [Line Items]
Anticipated Contract Revenues		$ 23		$ 23
PSEG Power [Member] | PJM [Member] | June 2023 to May 2024 [Member]
Revenues [Line Items]
Dollars Per Megawatt-Day | $ / mwd		50		50
Load (MW) | MW		3,700		3,700
PSEG Power [Member] | PJM [Member] | June 2024 to May 2025
Revenues [Line Items]
Dollars Per Megawatt-Day | $ / mwd		55		55
Load (MW) | MW		3,500		3,500
Other [Member] | LIPA OSA contract fixed component [Member]
Revenues [Line Items]
Anticipated Contract Revenues		$ 42		$ 42
PSEG Power & Other | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	513	1,052	2,130	3,614
Revenues Unrelated to Contracts with Customers	[1],[4]	33	(619)	1,345	(1,923)
Total Operating Revenues	[4]	546	433	3,475	1,691
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]	216	633	703	1,690
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]	32	34	90	125
PSEG Power & Other | Electricity and Related Products [Member] | NY ISO [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]				88
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	4	9	93
PSEG Power & Other | Gas Sales [Member] | Third Party Sales [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	44	144	156	357
PSEG Power & Other | Gas Sales [Member] | Sales to Affiliates [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	55	77	703	805
PSEG Power & Other | Other Revenues from Contracts with Customers [Member] | Operating Segments [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3],[4]	163	160	469	456
Public Service Electric and Gas Company [Member]
Revenues [Line Items]
Total Operating Revenues		1,999	1,953	5,954	5,905
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		294	335	339	337
Provision for Other Credit Losses		38	24	62	63
Accounts Receivable, Allowance for Credit Loss, Writeoff		(49)	(35)	(118)	(76)
Accounts Receivable, Allowance for Credit Loss, Recovery		7	12	20	34
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		283	324	283	324
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		283	$ 324	283	$ 324	$ 339
Regulatory Assets		4,911		4,911		$ 4,404
Public Service Electric and Gas Company [Member] | COVID-19 Deferral - Bad Debt portion
Revenues [Line Items]
Regulatory Assets		68		68
Public Service Electric and Gas Company [Member] | Societal Benefits Charges Sbc | Electric Bad Debt Deferral
Revenues [Line Items]
Regulatory Assets		$ 141		$ 141

[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 19. 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.