Derivative Financial Instruments (Fair Value of Derivative Instruments) (Details) (USD $) In Millions	Sep. 30, 2011		Dec. 31, 2010
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	$ 79		$ 29
Derivative liabilities, fair value	27		25
Derivatives Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	71		24
Derivative liabilities, fair value	27		18
Derivatives Designated as Hedging Instruments [Member] | Non-U.S. Currency Contracts [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	40	[1]	11	[1]
Derivatives Designated as Hedging Instruments [Member] | Non-U.S. Currency Contracts [Member] | Other Noncurrent Assets, Net [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	31	[1]	13	[1]
Derivatives Designated as Hedging Instruments [Member] | Non-U.S. Currency Contracts [Member] | Accounts Payable and Accrued Expenses [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities, fair value	27		17
Derivatives Designated as Hedging Instruments [Member] | Non-U.S. Currency Contracts [Member] | Other Non-Current Liabilities, Net [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities, fair value	0		1
Nondesignated [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	8		5
Nondesignated [Member] | Non-U.S. Currency Contracts [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	5		0
Nondesignated [Member] | Non-U.S. Currency Contracts [Member] | Accounts Payable and Accrued Expenses [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities, fair value	0		7
Nondesignated [Member] | Commodity Contracts [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	3		4
Nondesignated [Member] | Commodity Contracts [Member] | Other Noncurrent Assets, Net [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	$ 0		$ 1

[1] Amounts include the gross interest receivable or payable on our cross currency swap agreements.