Income Taxes - Uncertain Tax Provisions (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]
Unrecognized tax benefits, beginning balance	$ 515	$ 377
Activity on prior year tax positions		(20)
Activity on prior year tax positions	13
Additions on current year tax positions	154	166
Reductions on settlements with taxing authorities and expirations	(35)	(8)
Unrecognized tax benefits, ending balance	647	$ 515
Unrecognized tax benefits that would impact the effective tax rate	$ 538