Commitments and Contingencies - Forward Contracts (Details) lb in Thousands, gal in Thousands, $ in Thousands	3 Months Ended
Jan. 31, 2020 USD ($) bu gal T lb MMBTU $ / bu $ / T $ / gal $ / lb $ / MMBTU
Supply Commitment [Line Items]
Write-down on contracts \| $	$ 626
Distillers Grains
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount	3,100
Modified Distillers Grains
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount	18,700
Corn Oil
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount \| lb	1,398
Corn contracts
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount \| bu	3,375,542
Natural gas
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount \| MMBTU	3,170,350
Denaturant
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount \| gal	1,242
Basis Contracts \| Corn contracts
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount \| bu	1,906,457
Index Contracts \| Distillers Grains
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount	0
Index Contracts \| Modified Distillers Grains
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount	0
Index Contracts \| Corn Oil
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount \| lb	0
Index Contracts \| Natural gas
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount \| MMBTU	0
Index Contracts \| Denaturant
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount \| gal	0
Priced Contracts \| Distillers Grains
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount	3,100
Derivative, average forward price \| $ / T	140.48
Priced Contracts \| Modified Distillers Grains
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount	18,700
Derivative, average forward price \| $ / T	72.27
Priced Contracts \| Corn Oil
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount \| lb	1,398
Derivative, average forward price \| $ / lb	0.24
Priced Contracts \| Corn contracts
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount \| bu	1,469,085
Derivative, average forward price \| $ / bu	3.87
Priced Contracts \| Natural gas
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount \| MMBTU	3,170,350
Derivative, average forward price \| $ / MMBTU	2.41
Priced Contracts \| Denaturant
Supply Commitment [Line Items]
Derivative, nonmonetary notional amount \| gal	1,242
Derivative, average forward price \| $ / gal	1.26

The average forward price on the group of price risk forward or futures contracts, such as gas futures contracts.

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- Definition

Amount of decrease in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959

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- Definition

Nominal number of units used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

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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

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