CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Total operating revenue	$ 5,915	$ 6,449	$ 6,951
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	1,608	1,646	1,722
Selling, general and administrative	478	454	354
Operating expenses - affiliates	796	734	758
Depreciation and amortization	823	860	1,009
Goodwill impairment	(2,405)	0	0
Total operating expenses	6,110	3,694	3,843
OPERATING (LOSS) INCOME	(195)	2,755	3,108
OTHER (EXPENSE) INCOME
Interest expense	(95)	(112)	(181)
Other income (expense), net	5	7	(6)
Total other expense, net	(75)	(165)	(292)
(LOSS) INCOME BEFORE INCOME TAXES	(270)	2,590	2,816
Income tax expense	561	671	709
NET INCOME	(831)	1,919	2,107
Affiliated Entity
OTHER (EXPENSE) INCOME
Interest and Other Income	15
Interest Expense, Other		(60)	(105)
Non-Affiliate Services
Revenue from Contract with Customer [Abstract]
Total operating revenue	3,756	4,155	4,562
Affiliate Services
Revenue from Contract with Customer [Abstract]
Total operating revenue	$ 2,159	$ 2,294	$ 2,389