Derivative Financial Instruments (Schedule Of Derivative Instruments, Gains/(Losses) In Statement Of Financial Performance) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Foreign Exchange Contracts [Member]
Effective portion recognized in other comprehensive loss, net of taxes:
Effective portion recognized in other comprehensive loss, net of taxes	$ 36	$ (79)	$ 35	$ (20)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]
Effective portion reclassified out of Accumulated other comprehensive loss into earnings, net of taxes	8	7	18	21
Derivative instruments, forward points recognized in other income/expense [Abstract]
Forward points recognized in Other income/(expense), net	4	24	16	30
Undesignated derivatives recognized in Other income/(expense), net	(1)	8	(11)	19
Commodity Contracts [Member]
Effective portion recognized in other comprehensive loss, net of taxes:
Effective portion recognized in other comprehensive loss, net of taxes	1	(12)	(10)	(26)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]
Effective portion reclassified out of Accumulated other comprehensive loss into earnings, net of taxes	$ (8)	$ (7)	$ (26)	$ (20)