Derivative Financial Instruments (Schedule Of Derivative Instruments, Gains/(Losses)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes	$ (91)	$ 19	$ (93)	$ 71
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	(6)	(18)	(10)	(34)
Foreign Exchange Contract [Member]
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes	(91)	20	(93)	76
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	(5)	(17)	(9)	(32)
Forward points recognized in other income (expense), net	(1)	(1)	(5)	(2)
Undesignated derivatives recognized in Other income/(expense), net	(4)		(1)	5
Commodity Contract [Member]
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes		(1)		(5)
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	$ (1)	$ (1)	$ (1)	$ (2)