XML 68 R53.htm IDEA: XBRL DOCUMENT v3.10.0.1

Derivative Financial Instruments (Schedule Of Volumes Of Open Commodity Derivative Positions) (Details) contract in Thousands	Jun. 30, 2018 contract
Corn, Soybeans And Wheat In Bushels [Member] | Exchange Traded [Member] | Long [Member] | Options [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	5,304
Corn, Soybeans And Wheat In Bushels [Member] | Exchange Traded [Member] | Short [Member] | Futures [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	52,345
Corn In Bushels [Member] | Exchange Traded [Member] | Long [Member] | Cash Flow Hedges [Member] | Futures [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	500
Corn In Bushels [Member] | Exchange Traded [Member] | Short [Member] | Fair Value Hedging [Member] | Futures [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	4,750
Ethanol In Gallons [Member] | Exchange Traded [Member] | Long [Member] | Options [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	9,467
Ethanol In Gallons [Member] | Exchange Traded [Member] | Short [Member] | Futures [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	36,313
Ethanol In Gallons [Member] | Exchange Traded [Member] | Short [Member] | Cash Flow Hedges [Member] | Futures [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	18,270
Ethanol In Gallons [Member] | Non-Exchange Traded [Member] | Long [Member] | Forwards [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	32,986
Ethanol In Gallons [Member] | Non-Exchange Traded [Member] | Short [Member] | Forwards [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	289,259
Natural Gas In mmBTU [Member] | Exchange Traded [Member] | Long [Member] | Futures [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	10,050
Natural Gas In mmBTU [Member] | Exchange Traded [Member] | Short [Member] | Options [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	1,898
Natural Gas In mmBTU [Member] | Exchange Traded [Member] | Short [Member] | Fair Value Hedging [Member] | Futures [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	9,765
Natural Gas In mmBTU [Member] | Non-Exchange Traded [Member] | Long [Member] | Forwards [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	17,086
Natural Gas In mmBTU [Member] | Non-Exchange Traded [Member] | Short [Member] | Forwards [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	1,931
Livestock in Pounds [Member] | Exchange Traded [Member] | Short [Member] | Futures [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	18,390
Livestock in Pounds [Member] | Exchange Traded [Member] | Short [Member] | Options [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	3,732
Livestock in Pounds [Member] | Exchange Traded [Member] | Short [Member] | Cash Flow Hedges [Member] | Futures [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	292,280
Crude Oil In Barrels [Member] | Exchange Traded [Member] | Long [Member] | Options [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	67
Crude Oil In Barrels [Member] | Exchange Traded [Member] | Short [Member] | Futures [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	11
Crude Oil In Barrels [Member] | Exchange Traded [Member] | Short [Member] | Fair Value Hedging [Member] | Futures [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	43
Crude Oil In Barrels [Member] | Non-Exchange Traded [Member] | Long [Member] | Forwards [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	44
Crude Oil In Barrels [Member] | Non-Exchange Traded [Member] | Short [Member] | Forwards [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	44
Natural Gasoline In Gallons [Member] | Exchange Traded [Member] | Long [Member] | Cash Flow Hedges [Member] | Futures [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	2,814
Corn And Soybeans In Bushels [Member] | Non-Exchange Traded [Member] | Long [Member] | Forwards [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	50,708
Corn And Soybeans In Bushels [Member] | Non-Exchange Traded [Member] | Short [Member] | Forwards [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	555
Distillers Grains In Tons [Member] | Non-Exchange Traded [Member] | Long [Member] | Forwards [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	368
Distillers Grains In Tons [Member] | Non-Exchange Traded [Member] | Short [Member] | Forwards [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	638
Corn Oil in Pounds [Member] | Non-Exchange Traded [Member] | Long [Member] | Forwards [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	23,463
Corn Oil in Pounds [Member] | Non-Exchange Traded [Member] | Short [Member] | Forwards [Member]
Derivative [Line Items]
Volumes of open commodity derivatives	122,826

X

- Definition

Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

Name:	invest_DerivativeNonmonetaryNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Definition

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.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=gpre_CornSoybeansAndWheatInBushelsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TransactionTypeAxis=us-gaap_ExchangeTradedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PositionAxis=us-gaap_LongMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_OptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PositionAxis=us-gaap_ShortMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_FutureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=gpre_CornInBushelsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_FairValueHedgingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=gpre_EthanolInGallonsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TransactionTypeAxis=us-gaap_OverTheCounterMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_ForwardContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=gpre_NaturalGasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=gpre_LivestockInPoundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=gpre_CrudeOilInBarrelsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=gpre_NaturalGasolineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=gpre_CornAndSoybeansInBushelsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=gpre_DistillersGrainsInTonsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=gpre_CornOilInPoundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: