CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	2 Months Ended	10 Months Ended	12 Months Ended
	Dec. 31, 2017	Oct. 31, 2017	Dec. 31, 2018	Dec. 31, 2016
OPERATING REVENUE
Total operating revenue	$ 1,407	$ 6,870	$ 8,220	$ 8,173
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	690		3,937
Selling, general and administrative	253		1,354
Operating expenses - affiliates	24		257
Depreciation and amortization	282		1,704
Total operating expenses	1,249		7,252
OPERATING INCOME	158		968
OTHER (EXPENSE) INCOME
Interest income	1		0
Interest income - affiliate	11		67
Interest expense	(80)		(509)
Loss on modification and extinguishment of debt	0		0
Other income (expense), net	3		11
Total other expense, net	(65)		(431)
INCOME BEFORE INCOME TAX EXPENSE	93		537
Income tax expense	(234)		(196)
NET INCOME (LOSS)	(141)		341
Predecessor
OPERATING REVENUE
Total operating revenue		6,870		8,173
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)		3,493		4,162
Selling, general and administrative		1,208		1,407
Operating expenses - affiliates		0		0
Depreciation and amortization		1,018		1,159
Total operating expenses		5,719		6,728
OPERATING INCOME		1,151		1,445
OTHER (EXPENSE) INCOME
Interest income		13		4
Interest income - affiliate		0		0
Interest expense		(441)		(544)
Loss on modification and extinguishment of debt		(44)		(40)
Other income (expense), net		14		(23)
Total other expense, net		(458)		(603)
INCOME BEFORE INCOME TAX EXPENSE		693		842
Income tax expense		(268)		(165)
NET INCOME (LOSS)		425		677
Non-Affiliate Services
OPERATING REVENUE
Total operating revenue	1,391	6,870	8,113	8,173
Non-Affiliate Services | Predecessor
OPERATING REVENUE
Total operating revenue		6,870		8,173
Affiliate revenue
OPERATING REVENUE
Total operating revenue	$ 16	0	$ 107	0
Affiliate revenue | Predecessor
OPERATING REVENUE
Total operating revenue		$ 0		$ 0