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Commitments And Contingencies Commitments (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Dec. 27, 2014
Sep. 27, 2014
Guarantor Obligations [Line Items]    
Potential maximum obligation under cash flow assistance programs $ 330tsn_CashFlowAssistanceProgramPotentialMaximumObligation  
Total receivables under cash flow assistance programs 0tsn_CashFlowAssistanceProgramReceivables 4tsn_CashFlowAssistanceProgramReceivables
Uncollectible receivables estimated under cash flow assistance programs 0tsn_CashFlowAssistanceProgramEstimatedAllowanceForUncollectibleReceivables 0tsn_CashFlowAssistanceProgramEstimatedAllowanceForUncollectibleReceivables
Guarantee of Indebtedness of Others [Member]    
Guarantor Obligations [Line Items]    
Guarantor Obligations, Maximum Exposure, Period (in years) 10 years  
Maximum potential amount 62us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_GuaranteeOfIndebtednessOfOthersMember		  
Residual Value Guarantees [Member]    
Guarantor Obligations [Line Items]    
Maximum potential amount 53us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= tsn_ResidualValueGuaranteesMember		  
Guarantor Obligations, Maximum Exposure, Remaining Lease Period (in years) 13 years  
Amount recoverable through various recourse provisions $ 47tsn_GuaranteeObligationsRecourseProvisionsValue
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= tsn_ResidualValueGuaranteesMember