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Commitments and Contingencies Guarantees (Details) (USD $) | Feb. 28, 2015
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Guarantor Obligations [Line Items] |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 1,000,000,000 us-gaap_GuaranteeObligationsMaximumExposure
Guarantor Obligations, Current Exposure, Unrecorded | $ 117,600,000 chscp_GuarantorObligationsCurrentExposureUnrecorded

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- Definition Guarantor Obligations, Current Exposure, Unrecorded + References No definition available. + Details
Name: | chscp_GuarantorObligationsCurrentExposureUnrecorded
Namespace Prefix: | chscp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_GuaranteeObligationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
Name: | us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant