Segment Information (Schedule of Other Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Segment Reporting Information [Line Items]
Cash and cash equivalents	$ 25	$ 50
Accounts receivable	598	1,401
Property, plant and equipment	11,405	10,903
Unamortized debt expense	37	44
Right-of-use lease assets	168	177
Other long-term assets	476	359
TOTAL ASSETS	13,001	$ 12,926	$ 12,932
Other
Segment Reporting Information [Line Items]
Cash and cash equivalents	25		50
Accounts receivable	1		1
Prepayments	11		11
Property, plant and equipment	21		9
Unamortized debt expense	17		19
Right-of-use lease assets	53		60
Non-qualified retirement plan	3		3
Other long-term assets	19		0
TOTAL ASSETS	$ 150		$ 153