Derivative Financial Instruments (Notional Amounts And Fair Values Of Derivative Instruments) (Details) (USD $) In Millions	Sep. 30, 2011		Dec. 31, 2010
Derivatives, notional amounts	$ 2,706	[1]	$ 3,666	[1]
Netting Arrangements [Member] | Other Assets [Member]
Netting arrangements, assets	(65)		(71)
Netting Arrangements [Member] | Accrued Liabilities [Member]
Netting arrangements, liabilities	65		71
Other Assets [Member]
Total derivatives, assets	206		298
Net recorded balance, assets	141		227
Other Assets [Member] | Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contracts [Member]
Total derivatives, assets	173		266
Other Assets [Member] | Derivatives Designated As Hedging Instruments [Member] | Interest Rate Contracts [Member]
Total derivatives, assets	31		24
Other Assets [Member] | Derivatives Not Receiving Hedge Accounting Treatment [Member] | Foreign Exchange Contracts [Member]
Total derivatives, assets	2		8
Accrued Liabilities [Member]
Net recorded balance, liabilities	(124)		(115)
Total derivatives, liabilities	(189)		(186)
Accrued Liabilities [Member] | Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contracts [Member]
Total derivatives, liabilities	(22)		(15)
Accrued Liabilities [Member] | Derivatives Designated As Hedging Instruments [Member] | Commodity Contracts [Member]
Total derivatives, liabilities	(123)		(113)
Accrued Liabilities [Member] | Derivatives Not Receiving Hedge Accounting Treatment [Member] | Foreign Exchange Contracts [Member]
Total derivatives, liabilities	(44)		(58)
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contracts [Member]
Derivatives, notional amounts	1,609	[1]	2,001	[1]
Derivatives Designated As Hedging Instruments [Member] | Interest Rate Contracts [Member]
Derivatives, notional amounts	388	[1]	875	[1]
Derivatives Designated As Hedging Instruments [Member] | Commodity Contracts [Member]
Derivatives, notional amounts	116	[1]	144	[1]
Derivatives Not Receiving Hedge Accounting Treatment [Member] | Foreign Exchange Contracts [Member]
Derivatives, notional amounts	$ 593	[1]	$ 646	[1]

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