Segment Reporting - Narrative (Details) $ in Thousands	12 Months Ended
Aug. 31, 2019 USD ($) segment
Schedule of Equity Method Investments [Line Items]
Number of reportable segments \| segment	3
Revenues	$ 31,900,453
Ag
Schedule of Equity Method Investments [Line Items]
Revenues	24,720,072
Corporate and Other
Schedule of Equity Method Investments [Line Items]
Revenues	$ 61,305
CF Industries Nitrogen, LLC \| Nitrogen Production
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	10.00%
Ventura Foods \| Corporate and Other
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	50.00%
Ardent Mills, LLC
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	12.00%
Ardent Mills, LLC \| Corporate and Other
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	12.00%

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
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+ References

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
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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.

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