Income Taxes - Summary of State and Foreign Net Operating Loss Carryforwards on Gross Basis and Tax Credit Carryforwards (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Income Tax [Line Items]
Total tax credit carryforwards		$ 4
Expires within 5 Years
Income Tax [Line Items]
Total tax credit carryforwards		4
State and Foreign Net Operating Loss Carryforwards
Income Tax [Line Items]
Total net operating loss carryforwards	$ 42	49
State and Foreign Net Operating Loss Carryforwards | Expires after 5 Years or No Expiration
Income Tax [Line Items]
Total net operating loss carryforwards	$ 42	$ 49