Leases Operating Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Lease Costs
Long-term Lease Costs	$ 56	$ 50	$ 54
Short-term Lease Costs	26	42	45
Variable Lease Costs	13	20	31
Total Operating Lease Costs	95	112	130
Cash Paid for Amounts Included in the Measurement of Operating Lease Liabilities	$ 42	$ 43	$ 45
Weighted Average Remaining Lease Term in Years	9 years	9 years	11 years
Weighted Average Discount Rate	3.90%	3.80%	4.00%
Public Service Electric and Gas Company
Operating Lease Costs
Long-term Lease Costs	$ 31	$ 24	$ 26
Short-term Lease Costs	21	36	38
Variable Lease Costs	2	2	2
Total Operating Lease Costs	54	62	66
Cash Paid for Amounts Included in the Measurement of Operating Lease Liabilities	$ 17	$ 17	$ 17
Weighted Average Remaining Lease Term in Years	11 years	12 years	12 years
Weighted Average Discount Rate	3.50%	3.40%	3.50%
Other Segments
Operating Lease Costs
Long-term Lease Costs	$ 25	$ 26	$ 28
Short-term Lease Costs	5	6	7
Variable Lease Costs	11	18	29
Total Operating Lease Costs	41	50	64
Cash Paid for Amounts Included in the Measurement of Operating Lease Liabilities	$ 25	$ 26	$ 28
Weighted Average Remaining Lease Term in Years	7 years	8 years	11 years
Weighted Average Discount Rate	4.10%	4.10%	4.30%