Debt and Credit Facilities (Long-Term Debt Financing Transactions) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Commercial Paper		$ 2,200	$ 3,519
Issuance of Long-Term Debt		2,850	2,825	$ 2,450
Long-term Debt		18,186
Premium Paid on Early Extinguishment of Debt		0	294	0
PSEG [Member]
Debt Instrument [Line Items]
Long-term Debt		4,146	4,146
PSEG [Member] | Senior Notes Two Point Four Five Percent Due In Two Thousand Thirty One
Debt Instrument [Line Items]
Long-term Debt		$ 750	750
Stated interest rate of debt instrument		2.45%
PSEG [Member] | Senior Notes Zero Point Eight Four Percent Due In Two Thousand Twenty Three
Debt Instrument [Line Items]
Long-term Debt		$ 750	750
Stated interest rate of debt instrument		0.84%
PSEG [Member] | Senior Notes Two Point Six Five Percent Due In Two Thousand Twenty Two [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 0	700
Stated interest rate of debt instrument		2.65%
Repayments of Long-term Debt		$ 700
PSEG [Member] | Senior Notes Five Point Eight Five Percent Due In Two Thousand Twenty Seven
Debt Instrument [Line Items]
Issuance of Long-Term Debt		700
Long-term Debt		$ 700	0
Stated interest rate of debt instrument		5.85%
Public Service Electric and Gas Company
Debt Instrument [Line Items]
Issuance of Long-Term Debt		$ 900	1,325	$ 1,350
Long-term Debt		12,790	11,890
Public Service Electric and Gas Company | Medium Term Notes Three Point Zero due Two Thousand Fifty One
Debt Instrument [Line Items]
Long-term Debt	[1]	$ 450	450
Stated interest rate of debt instrument		3.00%
Public Service Electric and Gas Company | Medium Term Notes One Point Nine Zero due Two Thousand Thirty One
Debt Instrument [Line Items]
Long-term Debt		$ 425	425
Stated interest rate of debt instrument		1.90%
Public Service Electric and Gas Company | Medium Term Notes Green Bond Three Point One Zero due Two Thousand Thirty Two
Debt Instrument [Line Items]
Issuance of Long-Term Debt		$ 500
Long-term Debt		$ 500	0
Stated interest rate of debt instrument		3.10%
Public Service Electric and Gas Company | Medium Term Notes Four Point Nine Zero due Two Thousand Thirty Two
Debt Instrument [Line Items]
Issuance of Long-Term Debt		$ 400
Long-term Debt		$ 400	0
Stated interest rate of debt instrument		4.90%
PSEG Power LLC [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 1,250	0
PSEG Power LLC [Member] | Senior Notes Three Point Eight Five Percent due Two Thousand Twenty Three [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 1,250	$ 0
PSEG Power LLC [Member] | Senior Notes Eight Point Six Three Percent Due Two Thousand Thirty One [Member]
Debt Instrument [Line Items]
Stated interest rate of debt instrument		8.63%
PSEG Power LLC [Member] | Three Year Variable rate term loan
Debt Instrument [Line Items]
Issuance of Long-Term Debt		$ 1,250

[1] Secured by essentially all property of PSE&G pursuant to its First and Refunding Mortgage.