Leases - Operating Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Lease Cost [Line Item]
Long-term Lease Costs	$ 63	$ 58	$ 53
Short-term Lease Costs	20	24	27
Variable Lease Costs	14	13	15
Total Operating Lease Costs	97	95	95
Cash Paid for Amounts Included in the Measurement of Operating Lease Liabilities	$ 35	$ 37	$ 34
Weighted Average Remaining Lease Term in Years	7 years	7 years	8 years
Weighted Average Discount Rate	4.10%	4.10%	4.10%
Public Service Electric and Gas Company [Member]
Lease Cost [Line Item]
Long-term Lease Costs	$ 48	$ 43	$ 34
Short-term Lease Costs	17	21	21
Variable Lease Costs	2	2	2
Total Operating Lease Costs	67	66	57
Cash Paid for Amounts Included in the Measurement of Operating Lease Liabilities	$ 19	$ 20	$ 17
Weighted Average Remaining Lease Term in Years	8 years	9 years	10 years
Weighted Average Discount Rate	4.00%	4.00%	4.00%
Other Segments
Lease Cost [Line Item]
Long-term Lease Costs	$ 15	$ 15	$ 19
Short-term Lease Costs	3	3	6
Variable Lease Costs	12	11	13
Total Operating Lease Costs	30	29	38
Cash Paid for Amounts Included in the Measurement of Operating Lease Liabilities	$ 16	$ 17	$ 17
Weighted Average Remaining Lease Term in Years	5 years	6 years	7 years
Weighted Average Discount Rate	4.20%	4.20%	4.20%