Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components of the deferred income tax assets and liabilities
Unrecognized tax benefits	$ 14	$ 14	$ 2
Unrecognized tax benefits is reasonably possible	2
Income taxes paid	62
Income tax refunds received		30	$ 1
Current income tax receivable	$ 29	$ 78