Receivables - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Nov. 30, 2017	Aug. 31, 2017	Nov. 30, 2016
Notes Receivable, Long-Term
Interest Income Accrual Term, Discontinued	90 days
CHS Capital long-term notes receivable additional available credit of counterparty	$ 529,400
Deferred purchase price receivable	$ 521,502	$ 548,602	$ 0
Maximum [Member]
Notes Receivable, Short-Term
CHS Capital notes receivable, current, term	12 months
CHS Capital Notes Receivable [Member]
Notes Receivable, Long-Term
CHS Capital long-term notes receivable, non-current, term	10 years
CHS Capital long-term notes receivable	$ 14,800	$ 17,000
Commercial Notes to Notes and Loans Receivable, Net, Percentage	32.00%	17.00%
Producer Notes to Notes and Loans Receivable, Net, Percentage	68.00%	83.00%
Customer Concentration Risk [Member] \| CHS Capital Notes Receivable [Member]
Notes Receivable, Long-Term
Concentration Risk, Percentage	10.00%	10.00%

Commercial Notes to Notes and Loans Receivable, Net, Percentage

No definition available.

Name:	chscp_CommercialNotestoNotesandLoansReceivableNetPercentage
Namespace Prefix:	chscp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Deferred purchase price receivable

+ References

No definition available.

+ Details

Name:	chscp_Deferredpurchasepricereceivable
Namespace Prefix:	chscp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Interest Income Accrual, Discontinued, Term

+ References

No definition available.

+ Details

Name:	chscp_InterestIncomeAccrualDiscontinuedTerm
Namespace Prefix:	chscp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Notes and Loans Receivable, Current, Term

+ References

No definition available.

+ Details

Name:	chscp_NotesAndLoansReceivableCurrentTerm
Namespace Prefix:	chscp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

Name:	chscp_NotesAndLoansReceivablesNetNoncurrentRemainingBorrowingCapacityOfCounterparty
Namespace Prefix:	chscp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Notes and Loans Receivable, Net, Non-Current, Term

+ References

No definition available.

+ Details

Name:	chscp_NotesandLoansReceivableNonCurrentNetTerm
Namespace Prefix:	chscp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Producer Notes to Notes and Loans Receivable, Net, Percentage

+ References

No definition available.

+ Details

Name:	chscp_ProducerNotestoNotesandLoansReceivableNetPercentage
Namespace Prefix:	chscp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_AccountsNotesAndLoansReceivableNetCurrentAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_LongTermAccountsNotesAndLoansReceivableNetNoncurrentAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date more than one year from the balance sheet date, net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_NotesAndLoansReceivableNetNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=chscp_CHSCapitalNotesReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: