Income Taxes - Components of Income Tax (Benefit) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Current	$ 37	$ 16
Deferred	(48)	(100)
Total Income Tax Benefit	$ (11)	$ (84)
Effective Tax Rate	0.27%	22.50%