Other Comprehensive Loss (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	$ 1,818	$ 1,927	$ 957	$ 1,089
Cumulative translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	(34)	(10)	(2)
Net gain (loss) of cash flow hedge derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	0	0	(1)
Pension liability, net of tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	10	9	6
AOCI, tax portion	3	1	0
AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	$ (44)	$ (19)	$ (8)