Revenues Revenues (Details) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2022 USD ($) $ / mwd MW	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) $ / mwd MW	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Revenues [Line Items]
Revenue from Contract with Customers		$ 2,348	$ 2,164	$ 5,628	$ 5,018
Revenues Unrelated to Contracts with Customers	[1]	(272)	(290)	(1,239)	(255)
Total Operating Revenues		2,076	1,874	4,389	4,763
Regulatory Assets		3,754		3,754		$ 3,605
Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		(237)	(175)	(821)	(677)
Revenues Unrelated to Contracts with Customers	[1]	0	0	0	0
Total Operating Revenues	[2]	(237)	(175)	(821)	(677)
Electric Distribution Contracts [Member]
Revenues [Line Items]
Revenue from Contract with Customers		836	765	1,556	1,472
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		317	254	1,363	1,147
Gas Distribution [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	(2)	(1)	(5)
Electric Transmission [Member]
Revenues [Line Items]
Revenue from Contract with Customers		396	405	788	804
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		475	408	1,057	879
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		(35)	(62)	(91)	(150)
Electricity and Related Products [Member] | NY ISO [Member]
Revenues [Line Items]
Revenue from Contract with Customers		0	49	88	97
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		3	18	89	69
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		77	28	213	88
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		(202)	(110)	(728)	(520)
Other Revenues from Contracts with Customers [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	244	237	474	462
Other Revenues from Contracts with Customers [Member] | Eliminations [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3]	0	(1)	(1)	(2)
Public Service Electric and Gas Company [Member]
Revenues [Line Items]
Revenue from Contract with Customers		1,643	1,507	3,887	3,584
Revenues Unrelated to Contracts with Customers	[1]	25	7	65	3
Total Operating Revenues		$ 1,668	1,514	$ 3,952	3,587
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		$ 836	765	$ 1,556	1,472
Public Service Electric and Gas Company [Member] | Gas Distribution [Member]
Revenues [Line Items]
Revenue from Contract with Customers		317	256	1,364	1,152
Public Service Electric and Gas Company [Member] | Electric Transmission [Member]
Revenues [Line Items]
Revenue from Contract with Customers		396	405	788	804
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	81	179	156
PSEG Power [Member]
Revenues [Line Items]
Anticipated Contract Revenues		$ 47		$ 47
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]	942	832	2,562	2,111
Revenues Unrelated to Contracts with Customers	[1],[4]	(297)	(297)	(1,304)	(258)
Total Operating Revenues	[4]	645	535	1,258	1,853
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]	475	408	1,057	879
Other Segments | Electricity and Related Products [Member] | PJM [Member] | Sales to Affiliates [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	35	62	91	150
Other Segments | Electricity and Related Products [Member] | NY ISO [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	0	49	88	97
Other Segments | Electricity and Related Products [Member] | ISO New England [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	3	18	89	69
Other Segments | Gas Sales [Member] | Third Party Sales [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	77	28	213	88
Other Segments | Gas Sales [Member] | Sales to Affiliates [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[4]	202	110	728	520
Other Segments | Other Revenues from Contracts with Customers [Member]
Revenues [Line Items]
Revenue from Contract with Customers	[3],[4]	150	157	296	308
Public Service Electric and Gas Company [Member]
Revenues [Line Items]
Total Operating Revenues		1,668	1,514	3,952	3,587
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		351	239	337	206
Provision for Other Credit Losses		6	34	39	78
Accounts Receivable, Allowance for Credit Loss, Writeoff		(22)	(13)	(41)	(24)
Accounts Receivable, Allowance for Credit Loss, Recovery		14	5	22	7
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		335	260	335	260
Accounts Receivable and Unbilled Revenues, Allowance for Credit Losses		335	$ 260	335	$ 260	$ 337
Regulatory Assets		3,754		3,754		$ 3,605
Public Service Electric and Gas Company [Member] | COVID-19 Deferral - Bad Debt portion
Revenues [Line Items]
Regulatory Assets		63		63
Public Service Electric and Gas Company [Member] | Societal Benefits Charges Sbc | Electric Bad Debt Deferral
Revenues [Line Items]
Regulatory Assets		$ 137		$ 137

[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.