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, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, beginning of year	$ 1,095	$ 1,175	$ 1,181
Additions based on tax positions related to the current year	44	47	47
Additions for tax positions of prior years	49	166	24
Reductions for tax positions of prior years	(10)	(100)	(20)
Acquisitions, divestitures and other	6	53	(30)
Lapse of statute of limitations	(16)	(219)	(13)
Settlements	(7)	(4)	(38)
Effect of foreign currency translation	(22)	(23)	24
Unrecognized tax benefits, end of year	$ 1,139	$ 1,095	$ 1,175