SEGMENT INFORMATION (Schedule of Other Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Segment Reporting Information [Line Items]
Cash and cash equivalents	$ 26	$ 50
Accounts receivable	602	1,401
Property, plant and equipment	11,523	10,903
Unamortized debt expense	36	44
Right-of-use lease assets	163	177
Other long-term assets	408	359
TOTAL ASSETS	12,973	$ 12,926	$ 13,104
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Cash and cash equivalents	26		11
Accounts receivable	1		1
Prepayments	10		8
Other current assets	2		0
Property, plant and equipment	21		10
Unamortized debt expense	16		21
Right-of-use lease assets	51		58
Non-qualified retirement plan	3		3
Other long-term assets	10		0
TOTAL ASSETS	$ 140		$ 112