Revenues Revenues (Details) $ in Millions		3 Months Ended
		Mar. 31, 2022 USD ($) $ / mwd MW	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Revenues [Line Items]
Revenue from Contract with Customers		$ 3,280	$ 2,854
Revenues Unrelated to Contracts with Customers	[1]	(967)	35
Total Operating Revenues		2,313	2,889
Regulatory Assets		3,671		$ 3,605
Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		(584)	(502)
Revenues Unrelated to Contracts with Customers	[1]	0	0
Total Operating Revenues	[2]	(584)	(502)
Electric Distribution Contracts [Member]
Revenues [Line Items]
Revenue from Contract with Customers		720	707
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		1,046	893
Gas Distribution [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		(1)	(3)
Electric Transmission [Member]
Revenues [Line Items]
Revenue from Contract with Customers		392	399
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		582	471
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		(56)	(88)
Electricity and Related Products [Member] | NY ISO [Member]
Revenues [Line Items]
Revenue from Contract with Customers		88	48
Electricity and Related Products [Member] | NY ISO [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	0
Electricity and Related Products [Member] | ISO New England [Member]
Revenues [Line Items]
Revenue from Contract with Customers		86	51
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		136	60
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		(526)	(410)
Other Revenues from Contracts with Customers [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	230	225
Other Revenues from Contracts with Customers [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	(1)	(1)
Public Service Electric and Gas Company [Member]
Revenues [Line Items]
Revenue from Contract with Customers		2,244	2,077
Revenues Unrelated to Contracts with Customers	[1]	40	(4)
Total Operating Revenues		$ 2,284	2,073
Allowances percentage of accounts receivable		20.00%		21.00%
Public Service Electric and Gas Company [Member] | Electric Distribution Contracts [Member]
Revenues [Line Items]
Revenue from Contract with Customers		$ 720	707
Public Service Electric and Gas Company [Member] | Gas Distribution [Member]
Revenues [Line Items]
Revenue from Contract with Customers		1,047	896
Public Service Electric and Gas Company [Member] | Electric Transmission [Member]
Revenues [Line Items]
Revenue from Contract with Customers		392	399
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
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
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
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
Public Service Electric and Gas Company [Member] | Gas Sales [Member] | Third Party Sales [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]
Revenues [Line Items]
Revenue from Contract with Customers		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]	85	75
PSEG Power [Member]
Revenues [Line Items]
Anticipated Contract Revenues		$ 56
PSEG Power [Member] | PJM [Member] | June 2021 to May 2022 [Member]
Revenues [Line Items]
Dollars Per Megawatt-Day | $ / mwd		142
Load (MW) | MW		3,700
PSEG Power [Member] | PJM [Member] | June 2022 to May 2023 [Member]
Revenues [Line Items]
Dollars Per Megawatt-Day | $ / mwd		97
Load (MW) | MW		3,300
Other [Member] | LIPA OSA contract fixed component [Member]
Revenues [Line Items]
Anticipated Contract Revenues		$ 40
Other Segments
Revenues [Line Items]
Revenue from Contract with Customers	[4]	1,620	1,279
Revenues Unrelated to Contracts with Customers	[4]	(1,007)	39
Total Operating Revenues	[4]	613	1,318
Other Segments | Electric Distribution Contracts [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	0	0
Other Segments | Gas Distribution [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	0	0
Other Segments | Electric Transmission [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	0	0
Other Segments | Electricity and Related Products [Member] | PJM [Member] | Third Party Sales [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	582	471
Other Segments | Electricity and Related Products [Member] | PJM [Member] | Sales to Affiliates [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	56	88
Other Segments | Electricity and Related Products [Member] | NY ISO [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	88	48
Other Segments | Electricity and Related Products [Member] | ISO New England [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	86	51
Other Segments | Gas Sales [Member] | Third Party Sales [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	136	60
Other Segments | Gas Sales [Member] | Sales to Affiliates [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	526	410
Other Segments | Other Revenues from Contracts with Customers [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3],[4]	146	151
Public Service Electric and Gas Company [Member]
Revenues [Line Items]
Total Operating Revenues		2,284	2,073
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		337	206
Provision for Other Credit Losses		33	44
Accounts Receivable, Allowance for Credit Loss, Writeoff		(19)	(11)
Accounts Receivable, Allowance for Credit Loss, Recovery		8	2
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		351	239
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		351	$ 239	$ 337
Regulatory Assets		3,671		$ 3,605
Public Service Electric and Gas Company [Member] | COVID-19 Deferral - Bad Debt portion
Revenues [Line Items]
Regulatory Assets		66
Public Service Electric and Gas Company [Member] | Societal Benefits Charges Sbc | Electric Bad Debt Deferral
Revenues [Line Items]
Regulatory Assets		$ 145

[1] Includes primarily alternative revenues at PSE&G, derivative contracts and lease contracts 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.