CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
OPERATING REVENUE
Total operating revenue	$ 4,748	$ 5,508	$ 5,915
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	1,449	1,505	1,608
Selling, general and administrative	456	438	478
Net loss on disposal group held for sale	235	0	0
Operating expenses - affiliates	920	761	796
Depreciation and amortization	685	753	823
Goodwill impairment	2,012	0	2,405
Total operating expenses	5,757	3,457	6,110
OPERATING (LOSS) INCOME	(1,009)	2,051	(195)
OTHER INCOME (EXPENSE)
Interest expense	(91)	(62)	(95)
Other income, net	36	1	5
Total other income (expense), net	34	(37)	(75)
(LOSS) INCOME BEFORE INCOME TAXES	(975)	2,014	(270)
Income tax expense	352	527	561
NET (LOSS) INCOME	(1,327)	1,487	(831)
Nonaffiliate
OPERATING REVENUE
Total operating revenue	2,813	3,259	3,756
Affiliate
OPERATING REVENUE
Total operating revenue	1,935	2,249	2,159
OTHER INCOME (EXPENSE)
Interest income - affiliate, net	$ 89	$ 24	$ 15