Leases - Operating Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Lease Cost [Line Item]
Long-term Lease Costs	$ 58	$ 53	$ 56
Short-term Lease Costs	24	27	26
Variable Lease Costs	13	15	13
Total Operating Lease Costs	95	95	95
Cash Paid for Amounts Included in the Measurement of Operating Lease Liabilities	$ 37	$ 34	$ 42
Weighted Average Remaining Lease Term in Years	7 years	8 years	9 years
Weighted Average Discount Rate	4.10%	4.10%	3.90%
Public Service Electric and Gas Company [Member]
Lease Cost [Line Item]
Long-term Lease Costs	$ 43	$ 34	$ 31
Short-term Lease Costs	21	21	21
Variable Lease Costs	2	2	2
Total Operating Lease Costs	66	57	54
Cash Paid for Amounts Included in the Measurement of Operating Lease Liabilities	$ 20	$ 17	$ 17
Weighted Average Remaining Lease Term in Years	9 years	10 years	11 years
Weighted Average Discount Rate	4.00%	4.00%	3.50%
Other Segments
Lease Cost [Line Item]
Long-term Lease Costs	$ 15	$ 19	$ 25
Short-term Lease Costs	3	6	5
Variable Lease Costs	11	13	11
Total Operating Lease Costs	29	38	41
Cash Paid for Amounts Included in the Measurement of Operating Lease Liabilities	$ 17	$ 17	$ 25
Weighted Average Remaining Lease Term in Years	6 years	7 years	7 years
Weighted Average Discount Rate	4.20%	4.20%	4.10%