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Derivative Financial Instruments (Aggregate Outstanding Notionals Related To Undesignated Positions) (Details) (Not Designated as Hedging Instrument [Member], USD $)
In Millions, unless otherwise specified
Dec. 27, 2014
bu
Sep. 27, 2014
bu
Corn (in bushels)
    
Derivative [Line Items]    
Derivative, Nonmonetary Notional Amount 16,000,000invest_DerivativeNonmonetaryNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= tsn_CornMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 0invest_DerivativeNonmonetaryNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= tsn_CornMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Soy Meal (in tons)
    
Derivative [Line Items]    
Derivative, Nonmonetary Notional Amount 281,300invest_DerivativeNonmonetaryNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= tsn_SoyMealMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 195,800invest_DerivativeNonmonetaryNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= tsn_SoyMealMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Soy Oil (in pounds)
    
Derivative [Line Items]    
Derivative, Nonmonetary Notional Amount 21,000,000invest_DerivativeNonmonetaryNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= tsn_SoyOilMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 3,000,000invest_DerivativeNonmonetaryNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= tsn_SoyOilMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Live Cattle (in pounds)
    
Derivative [Line Items]    
Derivative, Nonmonetary Notional Amount 14,000,000invest_DerivativeNonmonetaryNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= tsn_LiveCattleMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 22,000,000invest_DerivativeNonmonetaryNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= tsn_LiveCattleMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Lean Hogs (in pounds)
    
Derivative [Line Items]    
Derivative, Nonmonetary Notional Amount 1,000,000invest_DerivativeNonmonetaryNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= tsn_LeanHogsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 22,000,000invest_DerivativeNonmonetaryNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= tsn_LeanHogsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Foreign Currency [Member]
    
Derivative [Line Items]    
Derivative, Notional Amount 29invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignCurrencyGainLossMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 108invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignCurrencyGainLossMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember