Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Beginning balance	$ 540	$ 572	$ 1,124
Additions due to acquisitions	19	0	15
Additions for tax positions of current year	91	4	104
Additions for tax positions of prior years	244	34	24
Reductions for tax positions of prior years	(182)	(43)	(659)
Closure of tax years	0	(6)	(4)
Settlements	(187)	(21)	(32)
Ending balance	$ 525	$ 540	$ 572