Financing Receivables - Additional Information (Details) - Public Service Electric and Gas Company [Member] - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Dec. 31, 2024
Schedule of Financial Receivables [Line Items]
Average loan repayment period	8 years
Average loan remaining repayment period	2 years
Outstanding Loans by Class of Customer	$ 36	$ 40
Minimum [Member]
Schedule of Financial Receivables [Line Items]
Loan receivable, term	10 years
Maximum [Member]
Schedule of Financial Receivables [Line Items]
Loan receivable, term	15 years
Commercial/Industrial [Member]
Schedule of Financial Receivables [Line Items]
Outstanding Loans by Class of Customer	$ 34	$ 38
Solar Loan I [Member] \| Commercial/Industrial [Member] \| Maximum [Member]
Schedule of Financial Receivables [Line Items]
Outstanding Loans by Class of Customer	$ 1

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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