Revenues Revenues (Details) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022 USD ($) $ / mwd MW	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) $ / mwd MW	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Revenues [Line Items]
Revenue from Contract with Customers		$ 2,874	$ 2,759	$ 8,502	$ 7,777
Revenues Unrelated to Contracts with Customers	[1]	(602)	(856)	(1,841)	(1,111)
Total Operating Revenues		2,272	1,903	6,661	6,666
Regulatory Assets		3,890		3,890		$ 3,605
Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		(114)	(127)	(935)	(804)
Revenues Unrelated to Contracts with Customers	[1]	0	0	0	0
Total Operating Revenues	[2]	(114)	(127)	(935)	(804)
Electric Distribution Contracts [Member]
Revenues [Line Items]
Revenue from Contract with Customers		1,282	1,181	2,838	2,653
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		160	138	1,523	1,285
Gas Distribution [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	(4)	(1)	(9)
Electric Transmission [Member]
Revenues [Line Items]
Revenue from Contract with Customers		400	409	1,188	1,213
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		633	622	1,690	1,501
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		(34)	(65)	(125)	(215)
Electricity and Related Products [Member] | NY ISO [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	69	88	166
Electricity and Related Products [Member] | NY ISO [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0	0	0
Electricity and Related Products [Member] | ISO New England [Member]
Revenues [Line Items]
Revenue from Contract with Customers		4	49	93	118
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		144	47	357	135
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		(77)	(58)	(805)	(578)
Other Revenues from Contracts with Customers [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	251	244	725	706
Other Revenues from Contracts with Customers [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	(3)	0	(4)	(2)
Public Service Electric and Gas Company [Member]
Revenues [Line Items]
Revenue from Contract with Customers		1,936	1,812	5,823	5,396
Revenues Unrelated to Contracts with Customers	[1]	17	8	82	11
Total Operating Revenues		$ 1,953	1,820	$ 5,905	5,407
Allowances percentage of accounts receivable		22.00%		22.00%		21.00%
Public Service Electric and Gas Company [Member] | Electric Distribution Contracts [Member]
Revenues [Line Items]
Revenue from Contract with Customers		$ 1,282	1,181	$ 2,838	2,653
Public Service Electric and Gas Company [Member] | Gas Distribution [Member]
Revenues [Line Items]
Revenue from Contract with Customers		160	142	1,524	1,294
Public Service Electric and Gas Company [Member] | Electric Transmission [Member]
Revenues [Line Items]
Revenue from Contract with Customers		400	409	1,188	1,213
Public Service Electric and Gas Company [Member] | Electricity and Related Products [Member] | PJM [Member] | Third Party Sales [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]
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]
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]
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]
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]
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]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	94	80	273	236
PSEG Power [Member]
Revenues [Line Items]
Anticipated Contract Revenues		$ 41		$ 41
PSEG Power [Member] | PJM [Member] | June 2022 to May 2023 [Member]
Revenues [Line Items]
Dollars Per Megawatt-Day | $ / mwd		97		97
Load (MW) | MW		3,300		3,300
PSEG Power [Member] | PJM [Member] | June 2023 to May 2024 [Member]
Revenues [Line Items]
Dollars Per Megawatt-Day | $ / mwd		49		49
Load (MW) | MW		3,700		3,700
Other [Member] | LIPA OSA contract fixed component [Member]
Revenues [Line Items]
Anticipated Contract Revenues		$ 40		$ 40
Other Segments
Revenues [Line Items]
Revenue from Contract with Customers	[4]	1,052	1,074	3,614	3,185
Revenues Unrelated to Contracts with Customers	[1],[4]	(619)	(864)	(1,923)	(1,122)
Total Operating Revenues	[4]	433	210	1,691	2,063
Other Segments | Electric Distribution Contracts [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	0	0	0	0
Other Segments | Gas Distribution [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	0	0	0	0
Other Segments | Electric Transmission [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	0	0	0	0
Other Segments | Electricity and Related Products [Member] | PJM [Member] | Third Party Sales [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	633	622	1,690	1,501
Other Segments | Electricity and Related Products [Member] | PJM [Member] | Sales to Affiliates [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	34	65	125	215
Other Segments | Electricity and Related Products [Member] | NY ISO [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	0	69	88	166
Other Segments | Electricity and Related Products [Member] | ISO New England [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	4	49	93	118
Other Segments | Gas Sales [Member] | Third Party Sales [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	144	47	357	135
Other Segments | Gas Sales [Member] | Sales to Affiliates [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	77	58	805	578
Other Segments | Other Revenues from Contracts with Customers [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3],[4]	160	164	456	472
Public Service Electric and Gas Company [Member]
Revenues [Line Items]
Total Operating Revenues		1,953	1,820	5,905	5,407
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		335	260	337	206
Provision for Other Credit Losses		24	46	63	124
Accounts Receivable, Allowance for Credit Loss, Writeoff		(35)	(19)	(76)	(43)
Accounts Receivable, Allowance for Credit Loss, Recovery		12	4	34	11
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		324	287	324	287
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		324	$ 287	324	$ 287	$ 337
Regulatory Assets		3,890		3,890		$ 3,605
Public Service Electric and Gas Company [Member] | COVID-19 Deferral - Bad Debt portion
Revenues [Line Items]
Regulatory Assets		62		62
Public Service Electric and Gas Company [Member] | Societal Benefits Charges Sbc | Electric Bad Debt Deferral
Revenues [Line Items]
Regulatory Assets		$ 131		$ 131

[1] Includes alternative revenues at PSE&G primarily from the CIP program in 2022 and derivative contracts and lease contracts in 2022 and 2021 in 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 20. Related-Party Transactions.

[3] Includes primarily revenues from appliance repair services and the sale of SRECs at auction at PSE&G, PSEG Power’s energy management fee with LIPA and PSEG LI’s OSA with LIPA in Other. Other also includes PSEG Power’s solar power projects in 2021.

[4] Other consists of revenues at PSEG Power, Energy Holdings and PSEG LI.