Income Taxes - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Line Items]
Federal tax rate	21.00%		35.00%
Tax Cuts and Jobs Act of 2017, Deferred tax liability, income tax expense (benefit)	$ 18
Deferred tax assets, Tax credit carryforwards, Foreign	2	$ 1
Deferred tax assets, Federal tax credit carryforwards	3	2
Deferred tax assets, Tax credit carryforwards, State	8	0
Valuation allowance, deferred tax asset, Increase (Decrease), amount	$ 4	$ 2
Maximum
Income Tax Disclosure [Line Items]
Tax loss and credit carryforwards expiration period	8 years