Consolidated Statements of Member's/Stockholders' Equity - USD ($) $ in Millions	Total	Member Units	AOCI Attributable to Parent	Common Stock	Additional Paid-in Capital	AOCI Attributable to Parent	Accumulated Deficit
MEMBER'S EQUITY
Net income | Predecessor	$ 95						$ 95
Other comprehensive income | Predecessor	21					$ 21
Balance at beginning of period (Predecessor) at Dec. 31, 2016				$ 4	$ 19,800	(387)	(8,500)
Balance at beginning of period at Dec. 31, 2016						(387)
STOCKHOLDERS' EQUITY
Common stock issued under employee stock benefit plans and other | Predecessor					10
Share-based compensation | Predecessor					38
Balance at end of period (Predecessor) at Mar. 31, 2017	11,081			$ 4	$ 19,848	(366)	$ (8,405)
Balance at end of period at Mar. 31, 2017						(366)
MEMBER'S EQUITY
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2014-09		$ 9
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2018-02		(6)	$ 6
Balance at beginning of period at Dec. 31, 2017		19,254	18
MEMBER'S EQUITY
Distributions		(390)
Purchase price accounting adjustments		(5)
Net income	62	62
Other comprehensive income	72		72
Balance at end of period at Mar. 31, 2018	19,020	$ 18,924	$ 96
Balance at beginning of period at Dec. 31, 2017	19,272					18
Balance at end of period at Mar. 31, 2018	$ 19,020					$ 96