Income Taxes (Reconciliation of Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits, beginning of year	$ 1,229	$ 1,214	$ 1,139
Additions based on tax positions related to the current year	71	64	72
Additions for tax positions of prior years	21	21	41
Reductions for tax positions of prior years	(6)	(14)	(15)
Acquisitions, divestitures and other	3	(12)	(14)
Lapse of statute of limitations	(58)	(14)	(11)
Settlements	(19)	(9)	(8)
Effect of foreign currency translation	40	(21)	10
Unrecognized tax benefits, end of year	$ 1,281	$ 1,229	$ 1,214