CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	2 Months Ended	10 Months Ended	12 Months Ended
	Dec. 31, 2017	Oct. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
OPERATING REVENUE
Total operating revenue	$ 1,407	$ 6,870	$ 8,185	$ 8,220
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	690	3,493	3,799	3,937
Selling, general and administrative	253	1,208	1,258	1,354
Operating expenses - affiliates	24	0	334	257
Depreciation and amortization	282	1,018	1,613	1,704
Goodwill impairment	0	0	3,708	0
Total operating expenses	1,249	5,719	10,712	7,252
OPERATING (LOSS) INCOME	158	1,151	(2,527)	968
OTHER (EXPENSE) INCOME
Interest income	1	13	9	4
Interest income - affiliate	11	0	61	63
Interest expense	(80)	(441)	(502)	(509)
Loss on modification and extinguishment of debt	0	(44)	5	0
Other income, net	3	14	8	11
Total other expense, net	(65)	(458)	(419)	(431)
(LOSS) INCOME BEFORE INCOME TAXES	93	693	(2,946)	537
Income tax expense	(234)	(268)	(255)	(196)
NET (LOSS) INCOME	(141)	425	(3,201)	341
Non-Affiliate Services
OPERATING REVENUE
Total operating revenue	1,391	6,870	8,005	8,113
Affiliate revenue
OPERATING REVENUE
Total operating revenue	$ 16	$ 0	$ 180	$ 107