Income Taxes - Reconciliation of Change in Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Gross Unrecognized Tax Benefits
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 405	$ 451	$ 431
Additions for tax positions related to the current year	3		33
Additions for tax positions related to prior years	14	1	3
Reductions for tax positions related to prior years due to IRS and other settlements	(381)	(47)	(16)
Ending balance	41	405	451
Portion of balance at December 31, that, if recognized, would impact the effective income tax rate	32
Accrued Interest and Penalties
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	14	46	31
Additions for tax positions related to the current year	0		0
Additions for tax positions related to prior years	6	4	21
Reductions for tax positions related to prior years due to IRS and other settlements	(10)	(36)	(6)
Ending balance	10	14	46
Portion of balance at December 31, that, if recognized, would impact the effective income tax rate	8
Gross Tax, Interest and Penalties
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	419	497	462
Additions for tax positions related to the current year	3		33
Additions for tax positions related to prior years	20	5	24
Reductions for tax positions related to prior years due to IRS and other settlements	(391)	(83)	(22)
Ending balance	51	$ 419	$ 497
Portion of balance at December 31, that, if recognized, would impact the effective income tax rate	$ 40