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Segment Reporting (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Mar. 28, 2015
Segments
Mar. 29, 2014
Sep. 27, 2014
Segment Reporting Information [Line Items]          
Number of Operating Segments     5us-gaap_NumberOfOperatingSegments    
Sales $ 9,979us-gaap_SalesRevenueNet $ 9,032us-gaap_SalesRevenueNet $ 20,796us-gaap_SalesRevenueNet $ 17,793us-gaap_SalesRevenueNet  
Segment Reconciling Items [Member]          
Segment Reporting Information [Line Items]          
Business Combination, Acquisition Related Costs 9us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
  24us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
   
Sales 0us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
0us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
0us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
0us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
 
Intersegment Elimination [Member]          
Segment Reporting Information [Line Items]          
Sales (277)us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
(311)us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
(609)us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
(598)us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
 
Intersegment Elimination [Member] | Chicken [Member]          
Segment Reporting Information [Line Items]          
Sales 6us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
/ us-gaap_StatementBusinessSegmentsAxis
= tsn_ChickenMember
2us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
/ us-gaap_StatementBusinessSegmentsAxis
= tsn_ChickenMember
7us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
/ us-gaap_StatementBusinessSegmentsAxis
= tsn_ChickenMember
4us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
/ us-gaap_StatementBusinessSegmentsAxis
= tsn_ChickenMember
 
Intersegment Elimination [Member] | Beef [Member]          
Segment Reporting Information [Line Items]          
Sales 77us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
/ us-gaap_StatementBusinessSegmentsAxis
= tsn_BeefMember
67us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
/ us-gaap_StatementBusinessSegmentsAxis
= tsn_BeefMember
155us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
/ us-gaap_StatementBusinessSegmentsAxis
= tsn_BeefMember
130us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
/ us-gaap_StatementBusinessSegmentsAxis
= tsn_BeefMember
 
Intersegment Elimination [Member] | Pork [Member]          
Segment Reporting Information [Line Items]          
Sales 194us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
/ us-gaap_StatementBusinessSegmentsAxis
= tsn_PorkMember
242us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
/ us-gaap_StatementBusinessSegmentsAxis
= tsn_PorkMember
447us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
/ us-gaap_StatementBusinessSegmentsAxis
= tsn_PorkMember
464us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_IntersegmentEliminationMember
/ us-gaap_StatementBusinessSegmentsAxis
= tsn_PorkMember
 
Chicken Production Operations in Brazil and Mexico [Member] | International [Member]          
Segment Reporting Information [Line Items]          
Disposal Group, Consideration         $ 575us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= tsn_ChickenProductionOperationsinBrazilandMexicoMember
/ us-gaap_StatementBusinessSegmentsAxis
= tsn_InternationalMember