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Derivatives and Fair Value of Financial Instruments - Gain (Loss) on Derivatives (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Commodities |  |  |
Amount of gain or (loss) recognized for each type of derivative and its location in the Consolidated Statements of Comprehensive Income |  |  |
Amount of Gain or (Loss) Recognized in Income on Derivatives | $ (9) | $ 21 | $ (45)
Commodities | Cost of sales |  |  |
Amount of gain or (loss) recognized for each type of derivative and its location in the Consolidated Statements of Comprehensive Income |  |  |
Amount of Gain or (Loss) Recognized in Income on Derivatives | (9) | 21 |
Foreign currencies | Cost of sales |  |  |
Amount of gain or (loss) recognized for each type of derivative and its location in the Consolidated Statements of Comprehensive Income |  |  |
Amount of Gain or (Loss) Recognized in Income on Derivatives | (7) | (27) |
Foreign currencies | Foreign currency gains, net |  |  |
Amount of gain or (loss) recognized for each type of derivative and its location in the Consolidated Statements of Comprehensive Income |  |  |
Amount of Gain or (Loss) Recognized in Income on Derivatives | $ (1) | 1 |
Interest rate swaps | Miscellaneous, net |  |  |
Amount of gain or (loss) recognized for each type of derivative and its location in the Consolidated Statements of Comprehensive Income |  |  |
Amount of Gain or (Loss) Recognized in Income on Derivatives |  | $ (2) |

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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