Debt and Credit Facilities - Schedule of Line of Credit Facilities (Parenthetical) (Details) - USD ($) $ in Millions		Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	[1]	$ 3,825
Commercial Paper		547	$ 949
PSEG Power [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		1,325
Public Service Electric and Gas Company [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		1,000
Commercial Paper		0	$ 425
Revolving Credit Facility [Member] | PSEG Power [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		1,250
Revolving Credit Facility [Member] | Public Service Electric and Gas Company [Member]
Debt Instrument [Line Items]
Commercial Paper		$ 0
Short-term Debt, Weighted Average Interest Rate, at Point in Time		4.95%
PSEG [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 1,500
PSEG [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		1,500
Commercial Paper		$ 547

[1] Amounts do not include uncommitted credit facilities or 364-day term loans, if any apply.