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Derivatives (Volume of Contracts Outstanding) (Details) lb in Thousands, gal in Thousands, bu in Thousands, T in Thousands | Jun. 30, 2019 lb | Jun. 30, 2019 bu | Jun. 30, 2019 T | Jun. 30, 2019 gal | Dec. 31, 2018 lb | Dec. 31, 2018 bu | Dec. 31, 2018 T | Dec. 31, 2018 gal | Jun. 30, 2018 lb | Jun. 30, 2018 bu | Jun. 30, 2018 T | Jun. 30, 2018 gal
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 8,809 | 1,292,468 | 3,359 | 310,137 | 2,920 | 506,417 | 66 | 323,975 | 6,158 | 598,844 | 77 | 474,625
Non-exchange Traded |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 8,809 | 866,106 | 3,179 | 213,884 | 2,920 | 313,612 | 66 | 246,863 | 6,158 | 370,044 | 77 | 334,261
Non-exchange Traded | Corn |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 648,434 | 0 | 0 | 0 | 250,408 | 0 | 0 | 0 | 272,979 | 0 | 0
Non-exchange Traded | Soybeans |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 59,594 | 0 | 0 | 0 | 22,463 | 0 | 0 | 0 | 49,208 | 0 | 0
Non-exchange Traded | Wheat |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 93,621 | 0 | 0 | 0 | 14,017 | 0 | 0 | 0 | 11,163 | 0 | 0
Non-exchange Traded | Oats |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 40,582 | 0 | 0 | 0 | 26,230 | 0 | 0 | 0 | 36,612 | 0 | 0
Non-exchange Traded | Ethanol |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 0 | 0 | 211,352 | 0 | 0 | 0 | 244,863 |  | 0 | 0 | 332,761
Non-exchange Traded | Corn oil |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 8,809 | 0 | 0 | 0 | 2,920 | 0 | 0 | 0 | 6,158 | 0 | 0 | 0
Non-exchange Traded | Other |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 23,875 | 3,179 | 2,532 | 0 | 494 | 66 | 2,000 |  | 82 | 77 | 1,500
Exchange Traded |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 426,362 | 180 | 96,253 | 0 | 192,805 | 0 | 77,112 | 0 | 228,800 | 0 | 140,364
Exchange Traded | Corn |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 317,405 | 0 | 0 | 0 | 130,585 | 0 | 0 | 0 | 133,730 | 0 | 0
Exchange Traded | Soybeans |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 52,762 | 0 | 0 | 0 | 26,985 | 0 | 0 | 0 | 45,775 | 0 | 0
Exchange Traded | Wheat |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 55,150 |  | 0 | 0 | 33,760 | 0 | 0 | 0 | 48,105 | 0 | 0
Exchange Traded | Oats |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 1,045 | 0 | 0 | 0 | 1,475 | 0 | 0 | 0 | 1,190 | 0 | 0
Exchange Traded | Ethanol |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 0 | 0 | 82,988 | 0 | 0 | 0 | 77,112 | 0 | 0 | 0 | 140,364
Exchange Traded | Propane |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 0 | 0 | 13,230 |  |  |  |  |  |  |  |
Exchange Traded | Other |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 0 | 180 | 35 |  |  |  |  |  |  |  |

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