CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues [Abstract]
Total operating revenue	$ 7,037	$ 7,493	$ 7,952
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	3,028	3,229	3,525
Selling, general and administrative	1,360	1,188	1,181
Net loss on sale of businesses	123	493	0
Operating expenses - affiliates	781	659	497
Depreciation and amortization	1,400	1,534	1,717
Goodwill impairment	1,970	4,638	0
Total operating expenses	8,662	11,741	6,920
OPERATING (LOSS) INCOME	(1,625)	(4,248)	1,032
OTHER (EXPENSE) INCOME
Interest Expense	(458)	(374)	(361)
Other Nonoperating Income (Expense)	15	23	47
Total other expense, net	(381)	(289)	(249)
(LOSS) INCOME BEFORE INCOME TAXES	(2,006)	(4,537)	783
Income tax (benefit) expense	(2)	256	197
NET (LOSS) INCOME	(2,004)	(4,793)	586
Affiliated Entity
OTHER (EXPENSE) INCOME
Interest and Other Income	62	62	65
Non-Affiliate Services
Revenues [Abstract]
Total operating revenue	6,813	7,266	7,729
Affiliate Services
Revenues [Abstract]
Total operating revenue	$ 224	$ 227	$ 223