Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Beginning balance	$ 1,124	$ 1,091	$ 1,552
Additions due to acquisitions	15	26	0
Additions for tax positions of current year	104	32	8
Additions for tax positions of prior years	24	60	0
Reductions for tax positions of prior years	(659)	(5)	(296)
Closure of tax years	(4)	(27)	0
Settlements	(32)	(53)	(173)
Ending balance	$ 572	$ 1,124	$ 1,091