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Debt (Narrative - Agribusiness And Energy Services Segment) (Details) item in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2020 USD ($) item | Dec. 31, 2019 USD ($)
Debt Instrument [Line Items] |  |
Short-term notes payable and other borrowings | $ 146,614,000 | $ 187,812,000
Agribusiness and Energy Services [Member] | Green Plains Grain [Member] |  |
Debt Instrument [Line Items] |  |
Minimum working capital required for compliance | $ 18,000,000 |
Percent Of Sum Of Total Commitment Plus Aggregate Seasonal Line Commitments | 18.00% |
Minimum Net Worth Required For Compliance, Percent | 21.00% |
Fixed charge coverage ratio | 1.25 |
Annual leverage ratio | 6.00 |
Maximum Capital Expenditures Per Year Under Agreement | $ 8,000,000.0 |
Maximum Unused Amounts For Capital Expenditures Under Agreements | 8,000,000.0 |
Agribusiness and Energy Services [Member] | Green Plains Grain [Member] | Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument, face amount | $ 100,000,000.0 |
Debt Instrument, Maturity Date | Jun. 28, 2022 |
Additional amounts available under facility, accordion feature | $ 75,000,000.0 |
Line of credit, maximum borrowing capacity | 225,000,000.0 |
Maximum Long Term Indebtedness Benchmark Under Agreement | $ 10,000,000.0 |
Maximum Long Term Debt Capitalization Under Agreement | 40.00% |
Agribusiness and Energy Services [Member] | Green Plains Grain [Member] | Revolving Credit Facility [Member] | LIBOR [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate, basis spread on variable rate, percentage | 3.00% |
Agribusiness and Energy Services [Member] | Green Plains Grain [Member] | Revolving Credit Facility [Member] | Base Rate [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate, basis spread on variable rate, percentage | 2.00% |
Agribusiness and Energy Services [Member] | Green Plains Grain [Member] | Revolving Credit Facility [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Unused capacity fee, percentage | 0.375% |
Agribusiness and Energy Services [Member] | Green Plains Grain [Member] | Revolving Credit Facility [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Unused capacity fee, percentage | 0.50% |
Agribusiness and Energy Services [Member] | Green Plains Grain [Member] | Seasonal Borrowings [Member] |  |
Debt Instrument [Line Items] |  |
Additional amounts available under facility, accordion feature | $ 50,000,000.0 |
Agribusiness and Energy Services [Member] | Green Plains Trade [Member] | Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Additional amounts available under facility, accordion feature | 70,000,000.0 |
Line of credit, maximum borrowing capacity | 300,000,000.0 |
Minimum working capital required for compliance | $ 1,500,000 |
Fixed charge coverage ratio | 1.15 |
Allowable dividends as percentage of net profit before taxes | 50.00% |
Undrawn availability of revolving credit facility on a pro forma basis | $ 10,000,000.0 |
Availability Benchmark Period Under Agreement | 30 days |
Unused capacity fee, percentage | 0.375% |
Agribusiness and Energy Services [Member] | Green Plains Trade [Member] | Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Jul. 28, 2022 |
Line of credit, maximum borrowing capacity | $ 285,000,000 |
Agribusiness and Energy Services [Member] | Green Plains Trade [Member] | Credit Facility [Member] | LIBOR [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate, basis spread on variable rate, percentage | 2.25% |
Agribusiness and Energy Services [Member] | Green Plains Trade [Member] | First-in-last-out (FILO) Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Line of credit, maximum borrowing capacity | $ 15,000,000 |
Agribusiness and Energy Services [Member] | Green Plains Trade [Member] | First-in-last-out (FILO) Credit Facility [Member] | LIBOR [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate, basis spread on variable rate, percentage | 3.25% |
Agribusiness and Energy Services [Member] | Green Plains Commodity Management [Member] | Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Apr. 30, 2023 |
Line of credit, maximum borrowing capacity | $ 30,000,000.0 |
Agribusiness and Energy Services [Member] | Green Plains Commodity Management [Member] | Revolving Credit Facility [Member] | LIBOR [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate, basis spread on variable rate, percentage | 1.75% |
Short-Term Inventory Financing Agreements [Member] | Agribusiness and Energy Services [Member] | Green Plains Grain [Member] |  |
Debt Instrument [Line Items] |  |
Number of bushels of corn | item | 1.3 |
Debt Instrument, Collateral Amount | $ 5,600,000 |
Short-Term Inventory Financing Agreements [Member] | Agribusiness and Energy Services [Member] | Green Plains Grain [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Debt Instrument [Line Items] |  |
Short-term notes payable and other borrowings | $ 5,900,000 |

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