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Derivative Instruments - Gross Contract Notional Volume of Outstanding Derivative Contracts (Detail) (Commodity Contracts [Member]) | Dec. 28, 2013 bu | Sep. 28, 2013 bu | Dec. 29, 2012 bu
--- | --- | --- | ---
Corn [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative commodity contracts outstanding volume | 0 | 0 | 1,449,000
Soy Meal [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative commodity contracts outstanding mass | 0 | 0 | 3,500

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- Definition Derivative commodity contract outstanding mass. + References No definition available. + Details
Name: | cent_DerivativeCommodityContractOutstandingMass
Namespace Prefix: | cent_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | instant

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- Definition Derivative commodity contract outstanding volume. + References No definition available. + Details
Name: | cent_DerivativeCommodityContractOutstandingVolume
Namespace Prefix: | cent_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

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