Derivative and Other Financial Instruments (Fair Values of Outstanding Derivative Instruments in the Consolidated Balance Sheets) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Total	$ 29	$ 22
Total	53	30
Fair Value, Inputs, Level 2 [Member] \| Other current assets [Member] \| Designated as Hedging Instrument [Member] \| Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, Foreign exchange contracts	15	5
Fair Value, Inputs, Level 2 [Member] \| Other current assets [Member] \| Not Designated As Hedging Instrument [Member] \| Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, Foreign exchange contracts	13	11
Fair Value, Inputs, Level 2 [Member] \| Accounts payable and accrued liabilities [Member] \| Designated as Hedging Instrument [Member] \| Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilites, Foreign exchange contracts	17	6
Fair Value, Inputs, Level 2 [Member] \| Accounts payable and accrued liabilities [Member] \| Not Designated As Hedging Instrument [Member] \| Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilites, Foreign exchange contracts	7	4
Fair Value, Inputs, Level 1 [Member] \| Other current assets [Member] \| Designated as Hedging Instrument [Member] \| Commodity Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, Commodity contracts	1	5
Fair Value, Inputs, Level 1 [Member] \| Other non-current assets [Member] \| Designated as Hedging Instrument [Member] \| Commodity Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, Commodity contracts	0	1
Fair Value, Inputs, Level 1 [Member] \| Accounts payable and accrued liabilities [Member] \| Designated as Hedging Instrument [Member] \| Commodity Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities, Commodity contracts	26	17
Fair Value, Inputs, Level 1 [Member] \| Other non-current liabilities [Member] \| Designated as Hedging Instrument [Member] \| Commodity Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities, Commodity contracts	$ 3	$ 3

Fair value before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=28370219&loc=SL20226000-175313

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=20225523&loc=SL20225862-175312

Reference 3: 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=7476318&loc=SL5624163-113959

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Fair value before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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Fair value as of the balance sheet date of foreign currency derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets on the balance sheet.

+ 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 (c)(1)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

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Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities on the balance sheet.

+ 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 (c)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

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Fair value as of the balance sheet date of price risk derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets on the balance sheet.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

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Fair value as of the balance sheet date of price risk derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities on the balance sheet.

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