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Fair Value Measurements Fair Value Measurements (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended		12 Months Ended
	Sep. 27, 2014 Accounts Receivable [Member] Customer Concentration Risk [Member] Wal-Mart Stores, Inc. [Member]	Sep. 28, 2013 Accounts Receivable [Member] Customer Concentration Risk [Member] Wal-Mart Stores, Inc. [Member]	Sep. 27, 2014 Chicken Production Operations in Brazil [Member] International [Member]	Sep. 27, 2014 Chicken Production Operations in Brazil [Member] Fair Value, Measurements, Nonrecurring [Member] International [Member]	Jun. 28, 2014 Facility Closing [Member] Prepared Foods [Member]	Jun. 28, 2014 Facility Closing [Member] Operating Segments [Member] Prepared Foods [Member] Facilities	Sep. 27, 2014 Facility Closing [Member] Operating Segments [Member] Prepared Foods [Member] Facilities	Sep. 27, 2014 Facility Closing [Member] Operating Segments [Member] Fair Value, Measurements, Nonrecurring [Member] Prepared Foods [Member]	Sep. 27, 2014 Common Stock and Warrants [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities									$ 6
Asset Impairment Charges			39	39	49		52	52
Plants Closed						3	3
Assets Held-for-sale, Long Lived, Fair Value Disclosure			$ 144
Concentration, Percentage	18.60%	17.50%

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Fair value portion of assets classified as held for sale.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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