Debt and Credit Facilities - Schedule of Line of Credit Facilities (Parenthetical) (Details) - USD ($) $ in Millions		Jun. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	[1]	$ 3,825
Commercial Paper and Loans		650	$ 1,593
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 and Loans		200	$ 444
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 and Loans		$ 200
Short-term Debt, Weighted Average Interest Rate, at Point in Time		4.59%
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 and Loans		$ 50
Short-term Debt, Weighted Average Interest Rate, at Point in Time		4.60%

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