Derivative Financial Instruments (Schedule Of Derivative Instruments, Gains/(Losses)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes	$ 40	$ 13	$ 111	$ 54
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	(10)	(15)	(44)	(58)
Foreign Exchange Contract [Member]
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes	40	14	116	55
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	(11)	(14)	(43)	(52)
Forward points recognized in other income (expense), net	1	4	3	8
Undesignated derivatives recognized in Other income/(expense), net	1	2	6	2
Commodity Contract [Member]
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes		(1)	(5)	(1)
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	$ 1	$ (1)	$ (1)	$ (6)