Segment Information (Schedule of Other Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Cash and cash equivalents	$ 50	$ 28
Property, plant and equipment	10,903	9,938
Unamortized debt expense	44	57
Operating lease assets	177	187
Long term assets	359	497
TOTAL ASSETS	12,926	11,848	$ 5,160
Other
Segment Reporting Information [Line Items]
Cash and cash equivalents	50	28	13
Accounts receivable	1	0	1
Prepayments	14	6	6
Property, plant and equipment	19	12	16
Unamortized debt expense	19	10	11
Operating lease assets	57	65	72
Non-qualified retirement plan	3	4	6
Long term assets	16	0	0
TOTAL ASSETS	$ 179	$ 125	$ 125