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Earnings Per Share (Schedule Of Earnings Per Share, Basic And Diluted) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 28, 2015	Mar. 29, 2014	Mar. 28, 2015	Mar. 29, 2014
Earnings Per Share, Basic and Diluted [Line Items]
Net income	$ 311us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	$ 210us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	$ 621us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	$ 462us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Less: Net income (loss) attributable to noncontrolling interest	1us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	(3)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	2us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	(5)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Net income attributable to Tyson	310us-gaap_IncomeLossFromContinuingOperations	213us-gaap_IncomeLossFromContinuingOperations	619us-gaap_IncomeLossFromContinuingOperations	467us-gaap_IncomeLossFromContinuingOperations
Undistributed earnings	273us-gaap_UndistributedEarnings	188us-gaap_UndistributedEarnings	536us-gaap_UndistributedEarnings	408us-gaap_UndistributedEarnings
Stock options and restricted stock	5us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	6us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	5us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	5us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Tangible Equity Units	6tsn_IncrementalCommonSharesAttributabletoDilutiveEffectofTangibleEquityUnits	0tsn_IncrementalCommonSharesAttributabletoDilutiveEffectofTangibleEquityUnits	6tsn_IncrementalCommonSharesAttributabletoDilutiveEffectofTangibleEquityUnits	0tsn_IncrementalCommonSharesAttributabletoDilutiveEffectofTangibleEquityUnits
Warrants	0us-gaap_IncrementalCommonSharesAttributableToCallOptionsAndWarrants	7us-gaap_IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0us-gaap_IncrementalCommonSharesAttributableToCallOptionsAndWarrants	8us-gaap_IncrementalCommonSharesAttributableToCallOptionsAndWarrants
Denominator for diluted earnings per share - adjusted weighted average shares and assumed conversions	415us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	356us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	416us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	355us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Net Income Per Share Attributable to Tyson - Diluted	$ 0.75us-gaap_EarningsPerShareDiluted	$ 0.60us-gaap_EarningsPerShareDiluted	$ 1.49us-gaap_EarningsPerShareDiluted	$ 1.32us-gaap_EarningsPerShareDiluted
Class A [Member]
Earnings Per Share, Basic and Diluted [Line Items]
Less Dividends Declared:	31us-gaap_DividendsCommonStockCash / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember	20us-gaap_DividendsCommonStockCash / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember	69us-gaap_DividendsCommonStockCash / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember	48us-gaap_DividendsCommonStockCash / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Undistributed earnings	230us-gaap_UndistributedEarnings / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember	153us-gaap_UndistributedEarnings / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember	451us-gaap_UndistributedEarnings / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember	332us-gaap_UndistributedEarnings / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Weighted average number of shares outstanding - Basic	334us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember	273us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember	335us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember	272us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Net Income Per Share Attributable to Tyson - Basic	$ 0.78us-gaap_EarningsPerShareBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember	$ 0.64us-gaap_EarningsPerShareBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember	$ 1.55us-gaap_EarningsPerShareBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember	$ 1.40us-gaap_EarningsPerShareBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Class B [Member]
Earnings Per Share, Basic and Diluted [Line Items]
Less Dividends Declared:	6us-gaap_DividendsCommonStockCash / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember	5us-gaap_DividendsCommonStockCash / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember	14us-gaap_DividendsCommonStockCash / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember	11us-gaap_DividendsCommonStockCash / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Undistributed earnings	$ 43us-gaap_UndistributedEarnings / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember	$ 35us-gaap_UndistributedEarnings / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember	$ 85us-gaap_UndistributedEarnings / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember	$ 76us-gaap_UndistributedEarnings / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Weighted average number of shares outstanding - Basic	70us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember	70us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember	70us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember	70us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Net Income Per Share Attributable to Tyson - Basic	$ 0.71us-gaap_EarningsPerShareBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember	$ 0.58us-gaap_EarningsPerShareBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember	$ 1.42us-gaap_EarningsPerShareBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember	$ 1.26us-gaap_EarningsPerShareBasic / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember

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