Derivative Financial Instruments (Schedule Of Derivative Instruments, Gains/(Losses) In Statement Of Financial Performance) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Derivative [Line Items]
Effective portion recognized in other comprehensive loss, net of taxes:	$ 25	$ (13)	$ 37
Effective portion reclassified out of Accumulated other comprehensive loss into earnings, net of taxes:	(5)	(16)	(9)
Foreign Exchange Contracts [Member]
Derivative [Line Items]
Effective portion recognized in other comprehensive loss, net of taxes:	35	12
Effective portion reclassified out of Accumulated other comprehensive loss into earnings, net of taxes:	35	42
Forward points recognized in Other income/(expense), net:	22	37
Undesignated derivatives recognized in Other income/(expense), net:	(16)	(21)
Commodity Contracts [Member]
Derivative [Line Items]
Effective portion recognized in other comprehensive loss, net of taxes:	(10)	(25)
Effective portion reclassified out of Accumulated other comprehensive loss into earnings, net of taxes:	$ (30)	$ (26)