Income Taxes - Reconciliation of Gross Amounts of Tax Contingencies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, beginning of year	$ 162	$ 143
Additions based on tax positions related to the current year	52	16
Additions for tax positions of prior years	63	35
Reductions for tax positions of prior years	(35)	(16)
Reductions for tax positions as a result of lapse of statute	0	(2)
Settlements	(8)	(14)
Balance, end of year	$ 234	$ 162