Segment Information (Schedule of Other Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Cash and cash equivalents	$ 28	$ 13
Property, plant and equipment	9,938	4,111
Unamortized debt expense	57	20
Operating lease assets	187	163
TOTAL ASSETS	11,848	5,160	$ 6,717
Other
Segment Reporting Information [Line Items]
Cash and cash equivalents	28	13	5
Accounts receivable	0	1	0
Income taxes receivable	0	0	30
Prepayments	6	6	8
Property, plant and equipment	12	16	27
Unamortized debt expense	10	11	11
Operating lease assets	65	72	80
Non-qualified retirement plan	4	6	7
TOTAL ASSETS	$ 125	$ 125	$ 168