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Derivative Financial Instruments and Hedging Activities Purchase and Sale Contracts (Details) (Not Designated as Hedging Instrument [Member], Forward Contracts [Member])	Nov. 30, 2014 Bushels	Aug. 31, 2014 Bushels
Grain and oilseed - bushels | Long [Member]
Purchase and Sales Contracts [Line Items]
Derivative, Nonmonetary Notional Amount	599,176,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_GrainandoilseedcontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_LongMember	665,690,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_GrainandoilseedcontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_LongMember
Grain and oilseed - bushels | Short [Member]
Purchase and Sales Contracts [Line Items]
Derivative, Nonmonetary Notional Amount	988,186,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_GrainandoilseedcontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_ShortMember	938,140,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_GrainandoilseedcontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_ShortMember
Ocean and barge freight - tons | Long [Member]
Purchase and Sales Contracts [Line Items]
Derivative, Nonmonetary Notional Amount	1,260,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitsbargeandfreightMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_LongMember	5,423,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitsbargeandfreightMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_LongMember
Ocean and barge freight - tons | Short [Member]
Purchase and Sales Contracts [Line Items]
Derivative, Nonmonetary Notional Amount	308,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitsbargeandfreightMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_ShortMember	4,005,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitsbargeandfreightMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_ShortMember
Livestock - pounds | Long [Member]
Purchase and Sales Contracts [Line Items]
Derivative, Nonmonetary Notional Amount	0invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitslivestockMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_LongMember	0invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitslivestockMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_LongMember
Livestock - pounds | Short [Member]
Purchase and Sales Contracts [Line Items]
Derivative, Nonmonetary Notional Amount	4,240,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitslivestockMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_ShortMember	46,280,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitslivestockMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_ShortMember
Energy products [Member] | Long [Member]
Purchase and Sales Contracts [Line Items]
Derivative, Nonmonetary Notional Amount	32,106,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_EnergyproductsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_LongMember	27,754,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_EnergyproductsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_LongMember
Energy products [Member] | Short [Member]
Purchase and Sales Contracts [Line Items]
Derivative, Nonmonetary Notional Amount	50,597,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_EnergyproductsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_ShortMember	50,450,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_EnergyproductsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_ShortMember
Soy product contracts [Member] | Long [Member]
Purchase and Sales Contracts [Line Items]
Derivative, Nonmonetary Notional Amount	126,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_SoyproductcontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_LongMember	37,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_SoyproductcontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_LongMember
Soy product contracts [Member] | Short [Member]
Purchase and Sales Contracts [Line Items]
Derivative, Nonmonetary Notional Amount	1,271,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_SoyproductcontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_ShortMember	1,212,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_SoyproductcontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_ShortMember
Derivative number of units Crop nutrients contracts [Member] | Long [Member]
Purchase and Sales Contracts [Line Items]
Derivative, Nonmonetary Notional Amount	582,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitsCropnutrientscontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_LongMember	1,613,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitsCropnutrientscontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_LongMember
Derivative number of units Crop nutrients contracts [Member] | Short [Member]
Purchase and Sales Contracts [Line Items]
Derivative, Nonmonetary Notional Amount	1,131,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitsCropnutrientscontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_ShortMember	1,607,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitsCropnutrientscontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_ShortMember
Derivative number of units cargo and freight rail contracts [Member] | Long [Member]
Purchase and Sales Contracts [Line Items]
Derivative, Nonmonetary Notional Amount	249,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitscargoandfreightrailcontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_LongMember	321,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitscargoandfreightrailcontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_LongMember
Derivative number of units cargo and freight rail contracts [Member] | Short [Member]
Purchase and Sales Contracts [Line Items]
Derivative, Nonmonetary Notional Amount	126,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitscargoandfreightrailcontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_ShortMember	186,000invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = chscp_DerivativenumberofunitscargoandfreightrailcontractsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember / us-gaap_PositionAxis = us-gaap_ShortMember

X

- Definition

Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

+ Details

Name:	invest_DerivativeNonmonetaryNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Details

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