Financing Receivables - Schedule of Outstanding Loans by Class of Customer (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Public Service Electric and Gas Company [Member]
Concentration Risk [Line Items]
Outstanding Loans by Class of Customers	$ 145
Current Portion (included in Accounts Receivable)	(14)
Noncurrent Portion (included in Long-Term Investments)	131
Public Service Electric and Gas Company [Member] | Commercial/Industrial [Member]
Concentration Risk [Line Items]
Outstanding Loans by Class of Customers	17
Public Service Electric and Gas Company [Member] | Residential [Member]
Concentration Risk [Line Items]
Outstanding Loans by Class of Customers	128
Solar Loan Program [Member]
Concentration Risk [Line Items]
Outstanding Loans by Class of Customers	20	$ 40
Current Portion (included in Accounts Receivable)	(11)	(17)
Noncurrent Portion (included in Long-Term Investments)	9	23
Solar Loan Program [Member] | Commercial/Industrial [Member]
Concentration Risk [Line Items]
Outstanding Loans by Class of Customers	19	38
Solar Loan Program [Member] | Residential [Member]
Concentration Risk [Line Items]
Outstanding Loans by Class of Customers	1	$ 2
Solar Loan II [Member]
Concentration Risk [Line Items]
Outstanding Loans by Class of Customers	$ 9
Solar Loan II [Member] | Commercial/Industrial [Member]
Concentration Risk [Line Items]
Loan receivable, term	15 years
Solar Loan II [Member] | Residential [Member]
Concentration Risk [Line Items]
Loan receivable, term	10 years
Solar Loan III [Member]
Concentration Risk [Line Items]
Outstanding Loans by Class of Customers	$ 11
Solar Loan III [Member] | Commercial/Industrial [Member]
Concentration Risk [Line Items]
Loan receivable, term	10 years
Solar Loan III [Member] | Residential [Member]
Concentration Risk [Line Items]
Loan receivable, term	10 years