Income Taxes - Summary of Tax Provisions (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Pre-tax income at estimated annual effective income tax rate before discrete items	$ 42	$ 34
Other discrete items	(2)	(1)
Provision for income taxes	$ 40	$ 33