Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Oct. 31, 2015
Numerator:
Total segment EBITDA	$ 192	$ 132	$ 152	$ (56)	$ (1,217)	$ (126)	$ (26)	$ (112)	$ 420	$ (1,481)	$ (458)
Denominator:
Shares used in computing net income (loss) per share, basic (in shares)									901,671,872	192,263,793	1,000
Effect of dilutive securities (in shares)									19,329,991	0	0
Total dilutive securities (in shares)									921,001,863	192,263,793	1,000
Basic net income (loss) per share (USD per share)	$ 0.21	$ 0.15	$ 0.17	$ (0.06)					$ 0.47	$ (7.70)	$ (458,000.00)
Diluted net income (loss) per share (USD per share)	$ 0.21	$ 0.14	$ 0.17	$ (0.06)					$ 0.46	$ (7.70)	$ (458,000.00)
Anti-dilutive shares excluded from diluted net income (loss) per share (in shares)									20,967,794	26,752,706	0
Shares outstanding prior to merger (in shares)												1,000