Hedging Activities (Effect Of Derivative Financial Instruments On Consolidated Financial Statements And Undesignated Derivatives) (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
Total Cash Flow Hedges [Member]
Derivatives Fair Value [Line Items]
(Loss)/gain recognized in OCI	$ (7)		$ (5)		$ 10		$ (24)
Gain/(loss) reclassified from accumulated OCI	3	[1]	(17)	[2]	12	[1]	(35)	[2]
Not Designated As Hedging Instruments [Member]
Derivatives Fair Value [Line Items]
(Loss)/gain recognized in income	(8)		(61)		89		73
Foreign Exchange Contracts [Member]
Derivatives Fair Value [Line Items]
(Loss)/gain recognized in OCI	(7)		(5)		10		(24)
Cost Of Sales [Member] | Total Cash Flow Hedges [Member]
Derivatives Fair Value [Line Items]
Gain/(loss) reclassified from accumulated OCI	3	[1]	(3)	[2]	6	[1]	(7)	[2]
Royalties [Member]
Derivatives Fair Value [Line Items]
Gain/(loss) reclassified from accumulated OCI			(14)	[2]	6	[1]	(28)	[2]
Other Income, Net [Member] | Not Designated As Hedging Instruments [Member]
Derivatives Fair Value [Line Items]
(Loss)/gain recognized in income	$ (8)		$ (61)		$ 89		$ 73

[1] The amount of hedge ineffectiveness for the three and nine months ended September 30, 2012 was insignificant.

[2] The amount of hedge ineffectiveness for the three and nine months ended September 30, 2011 was insignificant.