Pension, OPEB and Savings Plans (Changes In The Benefit Obligation And The Fair Value Of Plan Assets) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Deferred Costs and Other Assets		$ 8,473	$ 8,383
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Assets at Beginning of Year	[1]	7,499
Fair Value of Assets at End of Year	[1]	5,331	7,499
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated Other Comprehensive Income (Loss), Defined Benefit Pension and Other Postretirement Plans, Before Tax		594	495
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax		426	355
Regulatory Assets		1,405	1,043
Deferred Costs and Other Assets		141	117
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation at Beginning of Year	[2]	7,240	7,507
Service Cost		142	151	$ 141
Interest Cost		167	140	192
Actuarial (Gain) Loss	[3]	(1,517)	(199)
Gross Benefits Paid		(382)	(359)
Defined Benefit Plan, Benefit Obligation, Other		22	0
Benefit Obligation at End of Year	[2]	5,628	7,240	7,507
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Assets at Beginning of Year		6,906	6,368
Actual Return on Plan Assets		(1,606)	886
Employer Contributions		11	11
Gross Benefits Paid		(382)	(359)
Defined Benefit Plan, Plan Assets, Other		18	0
Fair Value of Assets at End of Year		4,911	6,906	6,368
Funded Status (Plan Assets less Benefit Obligation)		(717)	(334)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Current Accrued Benefit Cost	[4]	(12)	(16)
Accrued Benefit Cost		(705)	(318)
Amounts Recognized		(717)	(334)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Prior Service Cost		0	0
Net Actuarial Loss		2,151	1,643
Total	[5]	(2,151)	(1,643)
Liability, Defined Benefit Plan, Current portion held for sale			5
Other Benefits [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation at Beginning of Year	[2]	1,197	1,306
Service Cost		6	9	9
Interest Cost		26	22	34
Actuarial (Gain) Loss	[3]	(314)	(90)
Gross Benefits Paid		(61)	(50)
Defined Benefit Plan, Benefit Obligation, Other		3	0
Benefit Obligation at End of Year	[2]	851	1,197	1,306
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Assets at Beginning of Year		606	564
Actual Return on Plan Assets		(139)	79
Employer Contributions		23	13
Gross Benefits Paid		(61)	(50)
Defined Benefit Plan, Plan Assets, Other		0	0
Fair Value of Assets at End of Year		429	606	564
Funded Status (Plan Assets less Benefit Obligation)		(422)	(591)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Current Accrued Benefit Cost	[4]	(12)	(19)
Accrued Benefit Cost		(410)	(572)
Amounts Recognized		(422)	(591)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Prior Service Cost		(52)	(181)
Net Actuarial Loss		41	193
Total	[5]	11	(12)
Liability, Defined Benefit Plan, Current portion held for sale			7
Long Island Electric Utility Servco LLC Pension and OPEB [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Assets at Beginning of Year		422
Fair Value of Assets at End of Year		370	422
Long Island Electric Utility Servco LLC Pension and OPEB [Member] | Pension Benefits [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation at Beginning of Year	[6]	596	569
Service Cost		38	38
Interest Cost		17	14
Actuarial (Gain) Loss	[7]	(189)	(18)
Gross Benefits Paid		(10)	(7)
Benefit Obligation at End of Year	[6]	452	596	569
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Assets at Beginning of Year		422	343
Actual Return on Plan Assets		(72)	49
Employer Contributions		30	37
Gross Benefits Paid		(10)	(7)
Fair Value of Assets at End of Year		370	422	343
Funded Status (Plan Assets less Benefit Obligation)		(82)	(174)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Accrued Benefit Cost		(82)	(174)
Amounts Recognized	[8]	(82)	(174)
Long Island Electric Utility Servco LLC Pension and OPEB [Member] | Other Benefits [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation at Beginning of Year	[6]	640	699
Service Cost		21	23
Interest Cost		19	18
Actuarial (Gain) Loss	[7]	(215)	(89)
Gross Benefits Paid		(10)	(11)
Benefit Obligation at End of Year	[6]	455	640	699
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Assets at Beginning of Year		0	0
Actual Return on Plan Assets		0	0
Employer Contributions		10	11
Gross Benefits Paid		(10)	(11)
Fair Value of Assets at End of Year		0	0	$ 0
Funded Status (Plan Assets less Benefit Obligation)		(455)	(640)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Accrued Benefit Cost		(455)	(640)
Amounts Recognized	[8]	$ (455)	$ (640)

[1] Excludes net receivables of $7 million and $11 million as of December 31, 2022 and 2021, respectively, which consist of interest, dividends and receivables and payables related to pending securities sales and purchases. In addition, the table excludes cash and foreign currency of $2 million as of each of December 31, 2022 and 2021.

[2] Represents projected benefit obligation for pension benefits and the accumulated postretirement benefit obligation for other benefits. The vested benefit obligation is the actuarial present value of the vested benefits to which the employee is currently entitled but based on the employee’s expected date of separation or retirement.

[3] For pension benefits, the net actuarial gains in 2022 and 2021 were due primarily to an increase in the discount rate. For OPEB, the net actuarial gain in 2022 was due primarily to an increase in the discount rate and other assumption updates. For OPEB, the net actuarial gain in 2021 was due primarily to an increase in the discount rate coupled with lower than expected claims experience.

[4] Includes ($5) million and ($7) million for pension benefits and other benefits, respectively, as of December 31, 2021 classified as Held for Sale. For additional information, see Note 4. Early Plant Retirements/Asset Dispositions and Impairments.

[5] Includes $594 million ($426 million, after-tax) and $495 million ($355 million, after-tax) in Accumulated Other Comprehensive Loss related to Pension and OPEB as of December 31, 2022 and 2021, respectively. Also includes Regulatory Assets of $1,405 million and Deferred Assets of $141 million as of December 31, 2022 and Regulatory Assets of $1,043 million and Deferred Assets of $117 million as of December 31, 2021

[6] Represents projected benefit obligation for pension benefits and the accumulated postretirement benefit obligation for other benefits. The vested benefit obligation is the actuarial present value of the vested benefits to which the employee is currently entitled but based on the employee’s expected date of separation or retirement.

[7] For pension benefits and OPEB, the net actuarial gains in 2022 were due primarily to an increase in the discount rate. For pension benefits, the net actuarial gain in 2021 was due primarily to an increase in the discount rate. For OPEB, the net actuarial gain in 2021 was due primarily to updated assumptions.

[8] Amounts equal to the accrued pension and OPEB costs of Servco are offset in Long-Term Receivable of VIE on PSEG’s Consolidated Balance Sheets.