Segment Information (Schedule of Other Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Cash and cash equivalents	$ 21	$ 50
Other current assets	100	68
Property, plant and equipment	9,913	10,903
Unamortized debt expense	34	44
Operating lease assets	154	177
Long term assets	663	359
TOTAL ASSETS	11,991	12,926	$ 11,848
Other
Segment Reporting Information [Line Items]
Cash and cash equivalents	21	50	28
Accounts receivable	0	1	0
Prepayments	18	14	6
Other current assets	2	0	0
Property, plant and equipment	24	19	12
Unamortized debt expense	15	19	10
Operating lease assets	49	57	65
Non-qualified retirement plan	3	3	4
Long term assets	15	16	0
TOTAL ASSETS	$ 147	$ 179	$ 125