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Financial Instruments, Derivatives and Hedging Activities - Outstanding contracts (Details) lb in Millions, gal in Millions, bu in Millions, MMBTU in Millions | Sep. 30, 2019 MMBTU lb gal bu
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Corn Commodity |
Financial instruments, derivatives and hedging activities |
Futures contract (in bushels for corn and gallons for ethanol) | bu | 47
Soy Bean Oil |
Financial instruments, derivatives and hedging activities |
Soybean oil futures contract (in pounds) | lb | 0
Natural Gas Commodity |
Financial instruments, derivatives and hedging activities |
Natural gas futures contract (in mmbtu) | MMBTU | 30
Ethanol Commodity |
Financial instruments, derivatives and hedging activities |
Futures contract (in bushels for corn and gallons for ethanol) | gal | 8

X
- Definition Nominal energy measure used to calculate payments on a derivative instrument as reporting date. + References No definition available. + Details
Name: | ingr_DerivativeNonmonetaryNotionalAmountEnergyMeasure1
Namespace Prefix: | ingr_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

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- Definition Nominal mass used to calculate payments on a derivative instrument as of reporting date. + References No definition available. + Details
Name: | ingr_DerivativeNonmonetaryNotionalAmountMass1
Namespace Prefix: | ingr_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | instant

X
- Definition Nominal volume used to calculate payments on a derivative instrument as of the reporting date. + References No definition available. + Details
Name: | ingr_DerivativeNonmonetaryNotionalAmountVolume1
Namespace Prefix: | ingr_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

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- 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

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- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=ingr_CornCommodityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=ingr_SoyBeanOilMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=ingr_NaturalGasCommodityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=ingr_EthanolCommodityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |