Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits at beginning of period	$ 876	$ 923
Tax positions of current year netted against deferred tax assets	(34)	0
Tax positions of prior periods netted against deferred tax assets	0	(49)
Decrease in tax positions taken in the prior period	(2)	0
Increase in tax positions taken in the current period	3	4
Decrease due to settlement/payments	0	(2)
Decrease from the lapse of statute of limitations	(30)	0
Unrecognized tax benefits at end of period	$ 813	$ 876