Derivative Financial Instruments (Schedule Of Derivative Instruments, Gains/(Losses)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes	$ 19	$ (17)	$ 71	$ 41
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	(18)	(20)	(34)	(43)
Foreign Exchange Contract [Member]
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes	20	(21)	76	41
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	(17)	(17)	(32)	(38)
Forward points recognized in other income (expense), net	1	2	2	4
Undesignated derivatives recognized in Other income/(expense), net		(2)	5
Commodity Contract [Member]
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes	(1)	4	(5)
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	$ (1)	$ (3)	$ (2)	$ (5)