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Property, Plant And Equipment (Details) (USD $)
In Millions, unless otherwise specified
Mar. 28, 2015
Sep. 27, 2014
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 10,753us-gaap_PropertyPlantAndEquipmentGross $ 10,381us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation 5,475us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment 5,251us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Net property, plant and equipment 5,278us-gaap_PropertyPlantAndEquipmentNet 5,130us-gaap_PropertyPlantAndEquipmentNet
Land [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 128us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandMember
126us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandMember
Buildings And Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 3,578us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= tsn_BuildingsAndLeaseholdImprovementsMember
3,501us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= tsn_BuildingsAndLeaseholdImprovementsMember
Machinery And Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 6,322us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
6,144us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
Land Improvements And Other [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 281us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= tsn_LandImprovementsAndOtherMember
276us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= tsn_LandImprovementsAndOtherMember
Buildings And Equipment Under Construction [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 444us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ConstructionInProgressMember
$ 334us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ConstructionInProgressMember