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Debt and Credit Facilities - Long-Term Debt Financing Transactions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Issuance of Long-term Debt	$ 3,350	$ 2,800	$ 2,850
Repayments of Long-term Debt	$ 1,500	1,575	700
PSEG [Member] | Senior Notes Five Point Eight Eight Percent Due Two Thousand Twenty Eight
Debt Instrument [Line Items]
Stated interest rate of debt instrument	5.88%
PSEG [Member] | Senior Notes Six Point One Three Percent Due Two Thousand Thirty Three
Debt Instrument [Line Items]
Stated interest rate of debt instrument	6.13%
Public Service Electric and Gas Company [Member]
Debt Instrument [Line Items]
Issuance of Long-term Debt	$ 2,100	1,800	900
Repayments of Long-term Debt	$ 750	$ 825	$ 0
Public Service Electric and Gas Company [Member] | Medium Term Notes Green Bond Four Point Six Five Percent due Two Thousand Thirty Three
Debt Instrument [Line Items]
Stated interest rate of debt instrument	4.65%
Public Service Electric and Gas Company [Member] | Medium Term Notes Green Bond Five Point One Three Percent Due Two Thousand Fifty Three
Debt Instrument [Line Items]
Stated interest rate of debt instrument	5.13%
Public Service Electric and Gas Company [Member] | Medium Term Notes Five Point Two Zero Percent due Two Thousand Thirty Three
Debt Instrument [Line Items]
Stated interest rate of debt instrument	5.20%
Public Service Electric and Gas Company [Member] | Medium Term Notes Five Point Four Five Percent Due Two Thousand Fifty Three
Debt Instrument [Line Items]
Stated interest rate of debt instrument	5.45%

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