Financing Receivables - Schedule of Outstanding Loans by Class of Customer (Details) - Public Service Electric and Gas Company [Member] - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Concentration Risk [Line Items]
Outstanding Loans by Class of Customers	$ 192	$ 145
Current Portion (included in Accounts Receivable)	(21)	(14)
Noncurrent Portion (included in Long-Term Investments)	171	131
Commercial/Industrial [Member]
Concentration Risk [Line Items]
Outstanding Loans by Class of Customers	28	17
Residential [Member]
Concentration Risk [Line Items]
Outstanding Loans by Class of Customers	$ 164	$ 128

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

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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