Income Taxes - Uncertain Tax Positions (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, beginning of period	$ 22	$ 16
Gross increases - tax positions in current period	1	1
Balance, end of period	$ 23	$ 17