Income Taxes - Schedule of Unrecognized Tax Benefits (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of year	$ 572
Additions for tax positions of current year	4
Additions for tax positions of prior years	26
Reductions for tax positions of prior years	(31)
Closure of tax years	(6)
Settlements	(20)
Balance at end of period	$ 545