Consolidated Statements of Member's Equity - USD ($) $ in Millions	Total	AOCI Attributable to Parent	Member Units
Balance at beginning of period at Dec. 31, 2017		$ 18	$ 19,254
MEMBER'S EQUITY
Net (loss) income	$ 62
Other comprehensive income	72
Purchase price accounting adjustments			(5)
Distributions			(390)
Balance at end of period at Mar. 31, 2018		96	18,924
Balance at beginning of period at Dec. 31, 2018		(171)	18,048
MEMBER'S EQUITY
Net (loss) income	(3,585)
Other comprehensive income	$ 3
Purchase price accounting adjustments			0
Distributions			(225)
Balance at end of period at Mar. 31, 2019		$ (168)	$ 14,238