Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 3	$ (7)	$ 6	$ (7)
Income (loss) before taxes and equity in earnings of affiliates	$ (32)	$ (969)	$ (8)	$ (992)
Effective tax rate	(8.00%)	0.80%	(90.60%)	0.70%