Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current
Non-U.S.	$ 15	$ 31	$ 7
Deferred
U.S. federal	0	0	(9)
State	0	0	2
Non-U.S.	1	1	1
Total income tax expense	$ 16	$ 32	$ 1