Credit Commitments [Abstract]

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- Definition

Maximum Guarantees Allowed by Bank Covenants

+ References

No definition available.

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- Definition

Notes and Loans Receivables, Net, Noncurrent, Remaining Borrowing Capacity of Counterparty

+ References

No definition available.

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- Definition

Sale Leaseback Transaction, Annual Rent Increase, Percentage

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No definition available.

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- Definition

Sale Leaseback Transaction, Lease Arrangement Term

+ References

No definition available.

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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12069-110248

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- References

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- References

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- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717

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- Definition

The amount of the current period expense recorded for use of the property in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller.

+ References

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Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2016
Guarantees [Abstract]
Maximum guarantees allowed by bank covenants	$ 1,000.0
Guarantor obligations, maximum exposure, undiscounted	122.3
Lease Commitments
Operating leases, rent expense, net	88.5	$ 81.3	$ 74.7
Sale-leaseback transaction, lease arrangement term		20 years
Sale leaseback transaction, annual rent	$ 3.4
Sale leaseback transaction, annual rent increase	2.00%
CHS Capital
Credit Commitments [Abstract]
CHS Capital long-term notes receivable additional available credit of counterparty	$ 706.3
Minimum
Lease Commitments
Operating leases, terms of contract	1 year
Maximum
Lease Commitments
Operating leases, terms of contract	19 years