Unaudited Condensed Consolidated Statements of Change in Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Common Stock	Additional paid in capital	Retained earnings (Accumulated deficit)	Accumulated other comprehensive income (loss)	Noncontrolling interest	Total
Balance at the beginning of period at Dec. 31, 2018	$ 1,713	$ 59	$ (1,188)	$ 82	$ 1	$ 667
Balance at the beginning of period (in shares) at Dec. 31, 2018	59.4
Increase (Decrease) in Shareholders' Equity
Reclassification of APIC due to U.S. Domestication	$ (1,713)	1,713
Common stock issued under employee stock purchase plan		1				1
Common stock issued under employee stock purchase plan (in shares)	0.1
Common stock issued upon vesting or exercise of stock-based compensation awards (in shares)	0.1
Equity classified stock-based compensation expense		1				1
Dividends ($0.01 per common share)			(1)			(1)
Comprehensive loss			(57)	(6)		(63)
Balance at the end of period at Mar. 31, 2019		1,774	(1,246)	76	1	605
Balance at the end of period (in shares) at Mar. 31, 2019	59.6
Balance at the beginning of period at Dec. 31, 2018	$ 1,713	59	(1,188)	82	1	667
Balance at the beginning of period (in shares) at Dec. 31, 2018	59.4
Increase (Decrease) in Shareholders' Equity
Comprehensive loss						89
Balance at the end of period at Jun. 30, 2019		1,776	(1,098)	79	1	758
Balance at the end of period (in shares) at Jun. 30, 2019	59.6
Balance at the beginning of period at Mar. 31, 2019		1,774	(1,246)	76	1	605
Balance at the beginning of period (in shares) at Mar. 31, 2019	59.6
Increase (Decrease) in Shareholders' Equity
Equity classified stock-based compensation expense		2				2
Comprehensive loss			148	3		151
Balance at the end of period at Jun. 30, 2019		1,776	(1,098)	79	1	758
Balance at the end of period (in shares) at Jun. 30, 2019	59.6
Balance at the beginning of period at Dec. 31, 2019		1,784	(1,082)	59	1	$ 762
Balance at the beginning of period (in shares) at Dec. 31, 2019	59.9					59.9
Increase (Decrease) in Shareholders' Equity
Common stock issued under employee stock purchase plan		2				$ 2
Common stock issued under employee stock purchase plan (in shares)	0.2
Equity classified stock-based compensation expense		4				4
Comprehensive loss			(48)	(63)		(111)
Balance at the end of period at Mar. 31, 2020		1,790	(1,130)	(4)	1	657
Balance at the end of period (in shares) at Mar. 31, 2020	60.1
Balance at the beginning of period at Dec. 31, 2019		1,784	(1,082)	59	1	$ 762
Balance at the beginning of period (in shares) at Dec. 31, 2019	59.9					59.9
Increase (Decrease) in Shareholders' Equity
Comprehensive loss						$ 131
Balance at the end of period at Jun. 30, 2020		1,794	(825)	(68)	1	$ 902
Balance at the end of period (in shares) at Jun. 30, 2020	60.7					60.7
Balance at the beginning of period at Mar. 31, 2020		1,790	(1,130)	(4)	1	$ 657
Balance at the beginning of period (in shares) at Mar. 31, 2020	60.1
Increase (Decrease) in Shareholders' Equity
Reclassification of equity classified stock-based compensation awards to liability classified		(2)				(2)
Equity- settled stock- based compensation recovery from disposal of discontinued operations		(1)				(1)
Common stock issued under employee stock purchase plan		1				1
Common stock issued under employee stock purchase plan (in shares)	0.2
Equity classified stock-based compensation expense		6				6
Equity classified stock-based compensation expense (in shares)	0.4
Dividends ($0.01 per common share)			(1)			(1)
Comprehensive loss			306	(64)		242
Balance at the end of period at Jun. 30, 2020		$ 1,794	$ (825)	$ (68)	$ 1	$ 902
Balance at the end of period (in shares) at Jun. 30, 2020	60.7					60.7