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Equity Method Investments (Narrative) (Details) - Green Plains Cattle Company LLC [Member] - item		9 Months Ended
	Sep. 01, 2019	Sep. 30, 2020
Schedule of Equity Method Investments [Line Items]
Disposal Groups Including Discontinued Operations, Percent Sold	50.00%
Number of cattle capacity to support		355,000
Number of bushels of grain storage capacity		11,700,000

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Disposal Groups Including Discontinued Operations, Percent Sold

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Number Of Bushels Of Grain Storage Capacity

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Number Of Cattle Capacity To Support

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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