Pension, OPEB and Savings Plans (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021 USD ($) plan	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Number of PSEG's defined contribution plans | plan		2
Defined benefit plan funded status of plan percentage		95.00%
Rabbi trust assets used to fund nonqualified pension plans		$ 242
Defined benefit plans, projected benefit and accumulated benefit obligations		$ 7,100	$ 7,300
Maximum annual 401(k) contribution per employee, percent		50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Match		50.00%
Total Employer Matching Contributions		$ 44	43	$ 40
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax		355	545
Accumulated Other Comprehensive Income (Loss), Defined Benefit Pension and Other Postretirement Plans, Before Tax		495	760
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		$ (82)	$ (28)	$ 11
Discount Rate		2.94%	2.61%		3.30%
Expected long-term rate of return on plan assets		7.70%	7.70%	7.80%
Interest in Master Trust assets percentage		92.00%
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment		$ 0	$ 0
Other Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation		174
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		$ (96)	$ (77)	$ (59)
Discount Rate		2.82%	2.46%		3.20%
Expected long-term rate of return on plan assets		7.69%	7.70%	7.79%
Interest in Master Trust assets percentage			8.00%
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment		$ 0	$ 4
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage of assets		54.00%
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage of assets		28.00%
Other Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage of assets		18.00%
Real asset through equity securities percentage at year end		14
Thrift Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer matching contribution, percent		8.00%
Savings Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer matching contribution, percent		7.00%
Long Island Electric Utility Servco LLC Pension and OPEB [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of PSEG's defined contribution plans | plan		2
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		$ 30
Maximum annual 401(k) contribution per employee, percent		50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Match		50.00%
Employer matching contribution, percent		8.00%
Total Employer Matching Contributions		$ 9	9	$ 8
Long Island Electric Utility Servco LLC Pension and OPEB [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		$ 37	$ 30	$ 28
Discount Rate		3.21%	2.98%	3.52%
Expected long-term rate of return on plan assets		7.60%
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment		$ 0	$ 0
Long Island Electric Utility Servco LLC Pension and OPEB [Member] | Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		$ 11	$ 9	$ 6
Discount Rate		3.28%	3.08%	3.60%
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment		$ 0	$ 0
Long Island Electric Utility Servco LLC Pension and OPEB [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage of assets		60.00%
Long Island Electric Utility Servco LLC Pension and OPEB [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage of assets		25.00%
Long Island Electric Utility Servco LLC Pension and OPEB [Member] | Other Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage of assets		15.00%
Real asset through equity securities percentage at year end		0.16
Subsequent Event [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets	7.20%
Subsequent Event [Member] | Long Island Electric Utility Servco LLC Pension and OPEB [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets	7.60%