CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues [Abstract]
Total operating revenue	$ 7,952	$ 7,933	$ 7,773
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	3,525	3,486	3,387
Selling, general and administrative	1,181	1,226	1,258
Operating expenses - affiliates	497	368	334
Depreciation and amortization	1,717	1,689	1,613
Goodwill impairment	0	0	3,708
Total operating expenses	6,920	6,769	10,300
OPERATING INCOME (LOSS)	1,032	1,164	(2,527)
OTHER (EXPENSE) INCOME
Interest income - affiliate	65	51	61
Interest expense	(361)	(393)	(502)
Other income, net	47	50	22
Total other expense, net	(249)	(292)	(419)
INCOME (LOSS) BEFORE INCOME TAXES	783	872	(2,946)
Income tax expense	197	221	255
NET INCOME (LOSS)	586	651	(3,201)
Non-Affiliate Services
Revenues [Abstract]
Total operating revenue	7,729	7,725	7,593
Affiliate Services
Revenues [Abstract]
Total operating revenue	$ 223	$ 208	$ 180