Derivative Financial Instruments (Schedule Of Notional Amounts And Fair Values Of Derivative Instruments) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013		Dec. 31, 2012
Derivative [Line Items]
Notional amounts	$ 3,131	[1]	$ 3,224	[1]
Other assets	146		231
Derivatives, Assets	93		178
Accrued liabilities	(165)		(137)
Derivatives, Liabilities	(112)		(84)
Netting Arrangements [Member]
Derivative [Line Items]
Netting arrangements, Accrued liabilities	(53)		(53)
Netting arrangements, Other assets	53		53
Derivatives designated as hedging instruments: | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts	2,388	[1]	2,310	[1]
Other assets	111		202
Accrued liabilities	(65)		(16)
Derivatives designated as hedging instruments: | Interest Rate Contract [Member]
Derivative [Line Items]
Notional amounts	313	[1]	388	[1]
Other assets	17		26
Derivatives designated as hedging instruments: | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts	92	[1]	99	[1]
Accrued liabilities	(57)		(71)
Derivatives not receiving hedge accounting treatment: | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts	323	[1]	412	[1]
Other assets	18		3
Accrued liabilities	(36)		(42)
Derivatives not receiving hedge accounting treatment: | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts	15	[1]	15	[1]
Accrued liabilities	$ (7)		$ (8)

[1] Notional amounts represent the gross contract/notional amount of the derivatives outstanding.