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Derivative Financial Instruments (Schedule Of Open Position Derivative Financial Instruments) (Details) contract in Thousands | Sep. 30, 2020 contract
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Corn And Soybeans [Member] | Exchange Traded [Member] | Long [Member] | Futures [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 26,520 | [1],[2]
Corn And Soybeans [Member] | Non-Exchange Traded [Member] | Long [Member] | Forwards [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 25,434 | [3]
Corn And Soybeans [Member] | Non-Exchange Traded [Member] | Short [Member] | Forwards [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 498 | [3]
Corn [Member] | Exchange Traded [Member] | Long [Member] | Futures [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 13,500 | [1],[2]
Corn [Member] | Exchange Traded [Member] | Short [Member] | Futures [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 2,390 | [1],[2],[4]
Corn [Member] | Exchange Traded [Member] | Short [Member] | Options [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 18,433 | [1],[2]
Ethanol [Member] | Exchange Traded [Member] | Short [Member] | Futures [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 21,420 | [1],[2]
Ethanol [Member] | Exchange Traded [Member] | Short [Member] | Options [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 25,411 | [1],[2]
Ethanol [Member] | Exchange Traded [Member] | Short [Member] | Cash Flow Hedges [Member] | Futures [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 45,360 | [1],[2]
Ethanol [Member] | Non-Exchange Traded [Member] | Long [Member] | Forwards [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 13,492 | [3]
Ethanol [Member] | Non-Exchange Traded [Member] | Short [Member] | Forwards [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 161,575 | [3]
Natural Gas [Member] | Exchange Traded [Member] | Short [Member] | Futures [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 33,042 | [1],[2]
Natural Gas [Member] | Exchange Traded [Member] | Short [Member] | Options [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 100 | [1],[2]
Natural Gas [Member] | Exchange Traded [Member] | Short [Member] | Cash Flow Hedges [Member] | Futures [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 7,048 | [1],[2],[4]
Natural Gas [Member] | Non-Exchange Traded [Member] | Long [Member] | Forwards [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 5,607 | [3]
Natural Gas [Member] | Non-Exchange Traded [Member] | Short [Member] | Forwards [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 561 | [3]
Soybean Meal In Tons [Member] | Exchange Traded [Member] | Long [Member] | Futures [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 25 | [1],[2]
Soybean Meal In Tons [Member] | Exchange Traded [Member] | Long [Member] | Options [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 7 | [1],[2]
DDG [Member] | Non-Exchange Traded [Member] | Long [Member] | Forwards [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 98 | [3]
DDG [Member] | Non-Exchange Traded [Member] | Short [Member] | Forwards [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 385 | [3]
Corn Oil [Member] | Non-Exchange Traded [Member] | Long [Member] | Forwards [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 6,048 | [3]
Corn Oil [Member] | Non-Exchange Traded [Member] | Short [Member] | Forwards [Member] |  |
Derivative [Line Items] |  |
Derivative, Open Commodity Derivative Positions | 62,919 | [3]
[1] | Exchange traded futures and options are presented on a net long and (short) position basis. Options are presented on a delta-adjusted basis.
[2] | Futures used for cash flow hedges.
[3] | Non-exchange traded forwards are presented on a gross long and (short) position basis including both fixed-price and basis contracts.
[4] | Futures or non-exchange traded forwards used for fair value hedges.

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