Derivative Financial Instruments and Hedging Activities (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Fair Value Hedging [Member] \| Fixed-to-floating interest rate swaps (fair value hedges) [Member]
Derivatives designated as hedges
Notional amount	$ 540	$ 540
Period of derivatives designated as hedges	2 to 23 years	2 to 23 years
Derivatives not designated as hedges
Period of derivatives designated as hedges	2 to 23 years	2 to 23 years
Fair Value Hedging [Member] \| Fixed-to-floating interest rate swaps (fair value hedges) [Member] \| Other current assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	0	0
Derivatives not designated as hedges
Derivative asset designated as hedging instrument	0	0
Fair Value Hedging [Member] \| Fixed-to-floating interest rate swaps (fair value hedges) [Member] \| Other long-term assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	44	42
Derivatives not designated as hedges
Derivative asset designated as hedging instrument	44	42
Fair Value Hedging [Member] \| Fixed-to-floating interest rate swaps (fair value hedges) [Member] \| Other current liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	0	0
Derivatives not designated as hedges
Derivative liability designated as hedging instrument	0	0
Cash Flow Hedging [Member]
Derivatives designated as hedges
Period of derivatives designated as hedges	12 months
Derivatives not designated as hedges
Period of derivatives designated as hedges	12 months
Cash Flow Hedging [Member] \| Foreign currency exchange contracts (cash flow hedges) [Member]
Derivatives designated as hedges
Notional amount	361	227
Period of derivatives designated as hedges	12 to 36 months	12 to 36 months
Derivatives not designated as hedges
Period of derivatives designated as hedges	12 to 36 months	12 to 36 months
Cash Flow Hedging [Member] \| Foreign currency exchange contracts (cash flow hedges) [Member] \| Other current assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	5	4
Derivatives not designated as hedges
Derivative asset designated as hedging instrument	5	4
Cash Flow Hedging [Member] \| Foreign currency exchange contracts (cash flow hedges) [Member] \| Other long-term assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	0	0
Derivatives not designated as hedges
Derivative asset designated as hedging instrument	0	0
Cash Flow Hedging [Member] \| Foreign currency exchange contracts (cash flow hedges) [Member] \| Other current liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	6	5
Derivatives not designated as hedges
Derivative liability designated as hedging instrument	6	5
Cash Flow Hedging [Member] \| Commodity contracts (cash flow hedges) [Member]
Derivatives designated as hedges
Notional amount	47	39
Period of derivatives designated as hedges		12 months
Derivatives not designated as hedges
Period of derivatives designated as hedges		12 months
Cash Flow Hedging [Member] \| Commodity contracts (cash flow hedges) [Member] \| Other current assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	2	8
Derivatives not designated as hedges
Derivative asset designated as hedging instrument	2	8
Cash Flow Hedging [Member] \| Commodity contracts (cash flow hedges) [Member] \| Other long-term assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	0	0
Derivatives not designated as hedges
Derivative asset designated as hedging instrument	0	0
Cash Flow Hedging [Member] \| Commodity contracts (cash flow hedges) [Member] \| Other current liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	0	0
Derivatives not designated as hedges
Derivative liability designated as hedging instrument	0	0
Net Investment Hedging [Member] \| Cross currency swaps (net investment hedges) [Member]
Derivatives designated as hedges
Notional amount		75
Period of derivatives designated as hedges		12 months
Derivatives not designated as hedges
Period of derivatives designated as hedges		12 months
Net Investment Hedging [Member] \| Cross currency swaps (net investment hedges) [Member] \| Other current assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument		2
Derivatives not designated as hedges
Derivative asset designated as hedging instrument		2
Net Investment Hedging [Member] \| Cross currency swaps (net investment hedges) [Member] \| Other long-term assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument		0
Derivatives not designated as hedges
Derivative asset designated as hedging instrument		0
Net Investment Hedging [Member] \| Cross currency swaps (net investment hedges) [Member] \| Other current liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument		0
Derivatives not designated as hedges
Derivative liability designated as hedging instrument		0
Foreign currency exchange contracts (cash flow hedges) [Member]
Derivatives not designated as hedges
Notional amount	3,586	2,777
Period of derivatives not designated as hedges	12 months	12 months
Foreign currency exchange contracts (cash flow hedges) [Member] \| Other current assets [Member]
Derivatives not designated as hedges
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	41	20
Foreign currency exchange contracts (cash flow hedges) [Member] \| Other current liabilities [Member]
Derivatives not designated as hedges
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	28	19
Commodity contracts (cash flow hedges) [Member]
Derivatives not designated as hedges
Notional amount	128	102
Period of derivatives not designated as hedges	12 months	12 months
Commodity contracts (cash flow hedges) [Member] \| Other current assets [Member]
Derivatives not designated as hedges
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	3	17
Commodity contracts (cash flow hedges) [Member] \| Other current liabilities [Member]
Derivatives not designated as hedges
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	0	0
Other current assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	7	14
Derivatives not designated as hedges
Derivative asset designated as hedging instrument	7	14
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	44	37
Other long-term assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	44	42
Derivatives not designated as hedges
Derivative asset designated as hedging instrument	44	42
Other current liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	6	5
Derivatives not designated as hedges
Derivative liability designated as hedging instrument	6	5
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	$ 28	$ 19

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Derivatives not designated as hedges.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959

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
-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.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 205G
-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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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.

+ References

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 10
-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.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959

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Aggregate notional amount of all derivatives designated as a hedge of a net investment in a foreign operation. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Notional Amount
-URI http://asc.fasb.org/extlink&oid=6519104

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5579245-113959

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Notional Amount
-URI http://asc.fasb.org/extlink&oid=6519104

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