Leases Operating Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Lease Costs
Long-term Lease Costs	$ 53	$ 56	$ 50
Short-term Lease Costs	27	26	42
Variable Lease Costs	15	13	20
Total Operating Lease Costs	95	95	112
Cash Paid for Amounts Included in the Measurement of Operating Lease Liabilities	$ 34	$ 42	$ 43
Weighted Average Remaining Lease Term in Years	8 years	9 years	9 years
Weighted Average Discount Rate	4.10%	3.90%	3.80%
Public Service Electric and Gas Company
Operating Lease Costs
Long-term Lease Costs	$ 34	$ 31	$ 24
Short-term Lease Costs	21	21	36
Variable Lease Costs	2	2	2
Total Operating Lease Costs	57	54	62
Cash Paid for Amounts Included in the Measurement of Operating Lease Liabilities	$ 17	$ 17	$ 17
Weighted Average Remaining Lease Term in Years	10 years	11 years	12 years
Weighted Average Discount Rate	4.00%	3.50%	3.40%
Other Segments
Operating Lease Costs
Long-term Lease Costs	$ 19	$ 25	$ 26
Short-term Lease Costs	6	5	6
Variable Lease Costs	13	11	18
Total Operating Lease Costs	38	41	50
Cash Paid for Amounts Included in the Measurement of Operating Lease Liabilities	$ 17	$ 25	$ 26
Weighted Average Remaining Lease Term in Years	7 years	7 years	8 years
Weighted Average Discount Rate	4.20%	4.10%	4.10%