Income Taxes - Summary of Deferred Tax Assets, Valuation Allowance (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Deferred Tax Asset, Valuation Allowance Rollforward [Roll Forward]
Valuation allowance for deferred tax assets, beginning of year	$ 11	$ 10
Current year expense, net	17	1
Foreign exchange and other	(1)	0
Valuation allowance for deferred tax assets, end of year	$ 27	$ 11