Financing Receivables - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Dec. 31, 2025
Schedule of Financial Receivables [Line Items]
Agreements terms	The terms of these agreements can be five, seven or ten years.
Public Service Electric and Gas Company [Member]
Schedule of Financial Receivables [Line Items]
Average loan repayment period	7 years
Outstanding Loans by Class of Customer	$ 192	$ 145
Public Service Electric and Gas Company [Member] \| Commercial/Industrial [Member]
Schedule of Financial Receivables [Line Items]
Outstanding Loans by Class of Customer	$ 28	$ 17

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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+ Details