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Price Risk Management Activities (Tables) | 12 Months Ended
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Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Risk management activities by type of risk | As of December 31, 2017, we had the following outstanding commodity derivative instruments that were used as economic hedges, as well as commodity derivative instruments related to the physical purchase of corn at a fixed price. The information presents the notional volume of outstanding contracts by type of instrument and year of maturity (volumes in thousands of barrels, except those identified as corn contracts that are presented in thousands of bushels and soybean oil contracts that are presented in thousands of pounds).
|  | Notional Contract Volumes by Year of Maturity
Derivative Instrument |  | 2018 |  | 2019
Crude oil and refined petroleum products: |  |  |  |
Swaps – long |  | 2,655 |  |  | — |
Swaps – short |  | 2,590 |  |  | — |
Futures – long |  | 83,296 |  |  | — |
Futures – short |  | 87,542 |  |  | — |
Corn: |  |  |  |
Futures – long |  | 21,315 |  |  | 35 |
Futures – short |  | 50,695 |  |  | 665 |
Physical contracts – long |  | 25,103 |  |  | 630 |
Soybean oil: |  |  |  |
Futures – long |  | 76,079 |  |  | — |
Futures – short |  | 154,378 |  |  | — |
As of December 31, 2017, we had the following outstanding commodity derivative instruments that were entered into for trading purposes. The information presents the notional volume of outstanding contracts by type of instrument and year of maturity (volumes in thousands of barrels, except those identified as corn contracts that are presented in thousands of bushels).
|  | Notional Contract Volumes by Year of Maturity
Derivative Instrument |  | 2018 |  | 2019
Crude oil and refined petroleum products: |  |  |  |
Swaps – long |  | 659 |  |  | — |
Swaps – short |  | 659 |  |  | — |
Futures – long |  | 37,532 |  |  | — |
Futures – short |  | 36,919 |  |  | 150 |
Options – long |  | 153,050 |  |  | — |
Options – short |  | 153,050 |  |  | — |
Corn: |  |  |  |
Futures – long |  | 300 |  |  | — |
Fair values of derivative instruments | The following tables provide information about the fair values of our derivative instruments as of December 31, 2017 and 2016 (in millions) and the line items in the balance sheets in which the fair values are reflected. See Note 18 for additional information related to the fair values of our derivative instruments. As indicated in Note 18, we net fair value amounts recognized for multiple similar derivative contracts executed with the same counterparty under master netting arrangements, including cash collateral assets and obligations. The following tables, however, are presented on a gross asset and gross liability basis, which results in the reflection of certain assets in liability accounts and certain liabilities in asset accounts.
| Balance Sheet Location |  | December 31, 2017
|  | Asset Derivatives |  | Liability Derivatives
Derivatives not designated as hedging instruments |  |  |  |  |
Commodity contracts: |  |  |  |  |
Futures | Receivables, net |  | $ | 875 |  |  | $ | 955 |
Swaps | Receivables, net |  | 11 |  |  | 11 |
Options | Receivables, net |  | 8 |  |  | 3 |
Physical purchase contracts | Inventories |  | — |  |  | 6 |
Foreign currency contracts | Accrued expenses |  | — |  |  | 7 |
Total |  |  | $ | 894 |  |  | $ | 982 |
| Balance Sheet Location |  | December 31, 2016
|  | Asset Derivatives |  | Liability Derivatives
Derivatives not designated as hedging instruments |  |  |  |  |
Commodity contracts: |  |  |  |  |
Futures | Receivables, net |  | $ | 874 |  |  | $ | 872 |
Swaps | Receivables, net |  | 32 |  |  | 21 |
Options | Receivables, net |  | 6 |  |  | 2 |
Physical purchase contracts | Inventories |  | — |  |  | 5 |
Foreign currency contracts | Receivables, net |  | 3 |  |  | — |
Total |  |  | $ | 915 |  |  | $ | 900 |
Effect of derivative instruments on income | The following tables provide information about the gain or loss recognized in income on our derivative instruments and the income statement line items in which such gains and losses are reflected (in millions).
Derivatives Designated as Economic Hedges |  | Location of Gain (Loss) Recognized in Income on Derivatives |  | Year Ended December 31,
|  | 2017 |  | 2016 |  | 2015
Commodity contracts |  | Cost of materials and other |  | $ | (344 | ) |  | $ | (132 | ) |  | $ | 377 |
Foreign currency contracts |  | Cost of materials and other |  | (40 | ) |  | 16 |  |  | 49 |
Trading Derivatives |  | Location of Gain Recognized in Income on Derivatives |  | Year Ended December 31,
|  | 2017 |  | 2016 |  | 2015
Commodity contracts |  | Cost of materials and other |  | $ | 66 |  |  | $ | 46 |  |  | $ | 45 |

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 Reference 2: 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 + Details
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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported 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 -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 + Details
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