Variable Interest Entity Investment Acquisition Percentage.

No definition available.

Name:	ande_PercentageOfNewCumulativePreferredConvertibleSharesAcquired
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- Definition

Related party derivative asset.

+ References

No definition available.

+ Details

Name:	ande_RelatedPartyDerivativeAsset
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Related party derivative liability.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Revenues recognized for the sale of Corn.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Revenues recognized for the sale of Ethanol.

+ References

No definition available.

+ Details

Name:	ande_RevenuesRecognizedForSaleOfEthanol
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Data Type:	xbrli:monetaryItemType
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- Definition

This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 13
-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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_RelatedPartyTransactionLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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Related Party Transactions (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Jan. 01, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Total distributions received from unconsolidated affiliates		$ 0.1
Percentage of shares acquired from subsidiary (percentage)	100.00%
Revenues recognized for the sale of ethanol	$ 123.3	87.6
Revenues recognized for the sale of corn	117.5	118.5
Related party, Gross asset	2.0	2.3		$ 4.1
Related party, Gross liability	$ 0.5	$ 0.4		$ 0.1
TAEI
Related Party Transaction [Line Items]
Percentage of company ownership interest (percentage)			66.00%
TAME
Related Party Transaction [Line Items]
Percentage of company ownership interest (percentage)	33.00%		50.00%
Noncontrolling interest is attributed of all gains and losses of parent (percentage)	33.00%