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Earnings Per Share (Narrative) (Details) In Millions, 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]
Number Of Classes Of Common Stock			2tsn_NumberOfClassesOfCommonStock
Percentage amount of per share cash dividends paid to holders of Class B stock that cannot exceed paid to holders of Class A stock	90.00%tsn_CashDividendsPaidRatioToOtherClassOfStockMaximum		90.00%tsn_CashDividendsPaidRatioToOtherClassOfStockMaximum
Class A [Member]
Earnings Per Share, Basic and Diluted [Line Items]
Undistributed earnings (losses), ratio used to calculate allocation to class of stock			1tsn_UndistributedEarningsLossesRatioUsedToCalculateAllocationToClassOfStock / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Class B [Member]
Earnings Per Share, Basic and Diluted [Line Items]
Undistributed earnings (losses), ratio used to calculate allocation to class of stock			0.9tsn_UndistributedEarningsLossesRatioUsedToCalculateAllocationToClassOfStock / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Stock Compensation Plan [Member]
Earnings Per Share, Basic and Diluted [Line Items]
Antidilutive securities excluded from computation of earnings per share, shares	5us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_StockCompensationPlanMember	4us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_StockCompensationPlanMember	5us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_StockCompensationPlanMember	4us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_StockCompensationPlanMember

X

- Definition

Cash Dividends, Paid Ratio To Other Class Of Stock, Maximum

+ References

No definition available.

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- Details

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X

- Definition

Number of classes of common stock

+ References

No definition available.

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X

- Definition

Undistributed Earnings (Losses), Ratio Used to Calculate Allocation to Class of Stock

+ References

No definition available.

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Antidilution

-URI http://asc.fasb.org/extlink&oid=6505113



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Diluted Earnings Per Share

-URI http://asc.fasb.org/extlink&oid=6510752



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Contingent Stock Agreement

-URI http://asc.fasb.org/extlink&oid=6508534

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