Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
OPERATING REVENUES
Operating revenues	$ 2,052		$ 4,139
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	980		1,978
Selling, general and administrative	388		732
Operating expenses - affiliates	55		108
Depreciation and amortization	433		864
Total operating expenses	1,856		3,682
OPERATING INCOME	196		457
OTHER INCOME (EXPENSE)
Interest income	0		1
Interest income - affiliate	16		32
Interest expense	(124)		(244)
Loss on modification and extinguishment of debt	0		0
Other (expense) income, net	(4)		2
Total other expense, net	(112)		(209)
INCOME BEFORE INCOME TAX EXPENSE	84		248
Income tax expense	(44)		(146)
NET INCOME	40		102
Predecessor
OPERATING REVENUES
Operating revenues		$ 2,062		$ 4,110
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)		1,035		2,086
Selling, general and administrative		367		731
Operating expenses - affiliates		0		0
Depreciation and amortization		307		603
Total operating expenses		1,709		3,420
OPERATING INCOME		353		690
OTHER INCOME (EXPENSE)
Interest income		3		5
Interest income - affiliate		0		0
Interest expense		(131)		(265)
Loss on modification and extinguishment of debt		0		(44)
Other (expense) income, net		(2)		2
Total other expense, net		(130)		(302)
INCOME BEFORE INCOME TAX EXPENSE		223		388
Income tax expense		(69)		(139)
NET INCOME		154		249
Non-Affiliate Revenue
OPERATING REVENUES
Operating revenues	2,025		4,087
Non-Affiliate Revenue | Predecessor
OPERATING REVENUES
Operating revenues		2,062		4,110
Affiliate Revenues
OPERATING REVENUES
Operating revenues	$ 27		$ 52
Affiliate Revenues | Predecessor
OPERATING REVENUES
Operating revenues		$ 0		$ 0