Income Taxes - Schedule of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning unrecognized tax benefits	$ 0	$ 39	$ 141
Current year additions	27	0	0
Effectively settled tax positions	0	(39)	(102)
Ending unrecognized tax benefits	$ 27	$ 0	$ 39