Hedging Activities (Notional Amounts) (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Derivatives, Fair Value [Line Items]
Total derivatives - Notional amount	$ 3,122	$ 3,548
Total derivative assets - Fair value	22	5
Total derivative liabilities - Fair value	(111)	(200)
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets designated as hedging instruments - Fair value	3	4
Derivative assets not designated as hedging instruments - Fair value	19	1
Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities designated as hedging instruments - Fair value	(23)	(33)
Derivative liabilities not designated as hedging instruments - Fair value	(64)	(122)
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities not designated as hedging instruments - Fair value	(24)	(45)
Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments - Notional amount	373	602
Derivatives not designated as hedging instruments - Notional amount	$ 2,749	$ 2,946

Fair value of a derivative asset (or nonderivative instrument) that is designated and qualifies as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 205G

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44C
-Subparagraph a
-Clause 1

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Fair value of a derivative asset that is not designated or qualifying as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of a derivative liability (or nonderivative instrument) that is designated and qualifies as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of a derivative liability that is not designated or qualifying as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Aggregate notional amount of all derivatives designated as cash flow hedging instruments. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument.

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Aggregate notional amount of all derivatives. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument.

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Aggregate notional amount of all derivatives not designated as a hedging instrument. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument.

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