Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
OPERATING REVENUES
Operating revenues	$ 2,010		$ 6,149
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	976		2,954
Selling, general and administrative	311		1,043
Operating expenses - affiliates	65		173
Depreciation and amortization	431		1,295
Total operating expenses	1,783		5,465
OPERATING INCOME	227		684
OTHER INCOME (EXPENSE)
Interest income	(1)		0
Interest income - affiliate	18		50
Interest expense	(137)		(381)
Loss on modification and extinguishment of debt	0		0
Other income, net	19		21
Total other expense, net	(101)		(310)
INCOME BEFORE INCOME TAX EXPENSE	126		374
Income tax expense	(38)		(184)
NET INCOME	88		190
Predecessor
OPERATING REVENUES
Operating revenues		$ 2,059		$ 6,169
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)		1,046		3,132
Selling, general and administrative		354		1,085
Operating expenses - affiliates		0		0
Depreciation and amortization		310		913
Total operating expenses		1,710		5,130
OPERATING INCOME		349		1,039
OTHER INCOME (EXPENSE)
Interest income		6		11
Interest income - affiliate		0		0
Interest expense		(134)		(399)
Loss on modification and extinguishment of debt		0		(44)
Other income, net		12		14
Total other expense, net		(116)		(418)
INCOME BEFORE INCOME TAX EXPENSE		233		621
Income tax expense		(76)		(215)
NET INCOME		157		406
Non-Affiliate Revenue
OPERATING REVENUES
Operating revenues	1,984		6,071
Non-Affiliate Revenue | Predecessor
OPERATING REVENUES
Operating revenues		2,059		6,169
Affiliate Revenues
OPERATING REVENUES
Operating revenues	$ 26		$ 78
Affiliate Revenues | Predecessor
OPERATING REVENUES
Operating revenues		$ 0		$ 0