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v3.19.3.a.u2

Derivatives (Textual) (Details) | 12 Months Ended
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Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Maximum period in which contracts for the sale of grain to processors or other consumers extend | 1 year

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- Definition Maximum Period In Which Contracts For Sale Of Grain To Processors Or Other Consumers Extend + References No definition available. + Details
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Namespace Prefix: | ande_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration