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Derivatives And Hedging Activities Fair Value of Derivative Instruments (Details) (USD $) | Jun. 30, 2014 | Dec. 31, 2013
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Derivatives, Fair Value [Line Items] |  |  |  |
Derivative, Fair Value, Net | $ 12,000,000 |  | $ (2,000,000) |
Designated as Hedging Instrument [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative asset, fair value, gross asset | 31,000,000 |  | 29,000,000 |
Derivative liability, fair value, gross liability | 19,000,000 |  | 31,000,000 |
Not Designated as Hedging Instrument [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative asset, fair value, gross asset | 2,000,000 |  | 3,000,000 |
Derivative liability, fair value, gross liability | 2,000,000 |  | 3,000,000 |
Commodity derivatives [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative asset, fair value, gross asset | 2,000,000 |  | 2,000,000 |
Commodity derivatives [Member] | Designated as Hedging Instrument [Member] | Accrued Liabilities [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative liability, fair value, gross liability | 8,000,000 |  | 9,000,000 |
Commodity derivatives [Member] | Designated as Hedging Instrument [Member] | Other Long-Term Assets [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative asset, fair value, gross asset | 2,000,000 |  | 1,000,000 |
Commodity derivatives [Member] | Designated as Hedging Instrument [Member] | Other Long-Term Liabilities [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative liability, fair value, gross liability | 0 |  | 2,000,000 |
Foreign currency derivatives [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative asset, fair value, gross asset | 15,000,000 |  | 16,000,000 |
Derivative liability, fair value, gross liability | 3,000,000 |  | 3,000,000 |
Derivative, Fair Value, Net | 12,000,000 | [1] | 13,000,000 | [1]
Foreign currency derivatives [Member] | Designated as Hedging Instrument [Member] | Accrued Liabilities [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative asset, fair value, gross asset | 2,000,000 |  | 3,000,000 |
Derivative liability, fair value, gross liability | 5,000,000 |  | 10,000,000 |
Derivative, Fair Value, Net | (3,000,000) | [1] | (7,000,000) | [1]
Foreign currency derivatives [Member] | Designated as Hedging Instrument [Member] | Other Long-Term Assets [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative asset, fair value, gross asset | 10,000,000 |  | 5,000,000 |
Derivative liability, fair value, gross liability | 3,000,000 |  | 1,000,000 |
Derivative, Fair Value, Net | 7,000,000 | [1] | 4,000,000 | [1]
Foreign currency derivatives [Member] | Designated as Hedging Instrument [Member] | Other Long-Term Liabilities [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative asset, fair value, gross asset |  |  | 2,000,000 |
Derivative liability, fair value, gross liability |  |  | 6,000,000 |
Derivative, Fair Value, Net |  |  | (4,000,000) | [1]
Foreign currency derivatives [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative asset, fair value, gross asset | 2,000,000 |  | 3,000,000 |
Derivative liability, fair value, gross liability | 2,000,000 |  | 3,000,000 |
Derivative, Fair Value, Net | $ 0 | [1] | $ 0 | [1]
[1] | Derivative instruments within this category are subject to master netting arrangements and are presented on a net basis in the consolidated balance sheets in accordance with accounting guidance related to the offsetting of amounts related to certain contracts.

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- Definition 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. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: 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=34720828&loc=SL20225862-175312 Reference 2: 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=35706170&loc=SL5624163-113959 Reference 3: 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=36459792&loc=SL20226000-175313 + Details
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- Definition 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. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: 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=34720828&loc=SL20225862-175312 Reference 2: 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=35706170&loc=SL5624163-113959 Reference 3: 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=36459792&loc=SL20226000-175313 + Details
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