Income Taxes - Uncertain Tax Positions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, beginning of period	$ 23	$ 17	$ 22	$ 16
Gross increases - tax positions in current period	1	1	2	2
Balance, end of period	$ 23	$ 18	$ 23	$ 18