Derivatives (Details 4) (Derivatives not designated as hedging instruments, USD $)	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Derivatives not designated as hedging instruments
Gross notional amount of forward, option and swap contracts not designated as hedging instruments	$ 1,100,000,000
Gain (Loss) on Derivative Recognized in income	31,000,000	13,000,000
Foreign currency forward/option contracts \| Cost of Sales
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	10,000,000	(15,000,000)
Foreign currency forward contracts \| Interest expense
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	21,000,000	27,000,000
Commodity price swap contracts \| Cost of Sales
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income		$ 1,000,000

Net gain (loss) from the increase (decrease) in fair value of derivative instrument not designated as hedging instrument.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 45

-Subparagraph b(1)(b)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration