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Fair Value Measurements Fair Value Measurements (Narrative) (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 03, 2015 USD ($) | Oct. 01, 2016 USD ($) | Oct. 03, 2015 USD ($) | Sep. 27, 2014 USD ($) Facilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net |  |  | $ 0 | $ 0 |
Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, Net of Tax, Portion Attributable to Parent |  |  | 0 | 0 |
Asset Impairment Charges |  |  | $ 45 | 285 | $ 107
Goodwill, Impairment Loss |  |  |  | 23 |
Beef [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Goodwill, Impairment Loss |  |  |  | 0 |
Prepared Foods [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Goodwill, Impairment Loss |  |  |  | 0 |
Other [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Goodwill, Impairment Loss | [1] |  |  | $ 23 |
Other [Member] | Chicken Production Operations in Brazil [Member] | Other [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Asset Impairment Charges |  |  |  |  | 39
Facility Closing [Member] | Operating Segments [Member] | Beef [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Asset Impairment Charges |  | $ 12 |  |  |
Facility Closing [Member] | Operating Segments [Member] | Prepared Foods [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Asset Impairment Charges |  | 59 |  |  | $ 52
Plants Closed | Facilities |  |  |  |  | 3
Facility Closing [Member] | Operating Segments [Member] | Cost of Sales [Member] | Prepared Foods [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Asset Impairment Charges |  | 49 |  |  |
Facility Closing [Member] | Operating Segments [Member] | Selling, General and Administrative Expenses [Member] | Prepared Foods [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Asset Impairment Charges |  | 10 |  |  |
Fair Value, Measurements, Nonrecurring [Member] | Facility Closing [Member] | Operating Segments [Member] | Beef [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Asset Impairment Charges |  | 12 |  |  |
Fair Value, Measurements, Nonrecurring [Member] | Facility Closing [Member] | Operating Segments [Member] | Prepared Foods [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Asset Impairment Charges |  | 59 |  |  |
Fair Value, Measurements, Nonrecurring [Member] | Facility Closing [Member] | Operating Segments [Member] | Cost of Sales [Member] | Prepared Foods [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Asset Impairment Charges |  | 49 |  |  |
Fair Value, Measurements, Nonrecurring [Member] | Facility Closing [Member] | Operating Segments [Member] | Selling, General and Administrative Expenses [Member] | Prepared Foods [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Asset Impairment Charges |  | 10 |  |  |
Maximum [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Short Term Investment Maturity Period |  |  | 12 months |  |
Available For Sale Securities Debt Maturity Period |  |  | 31 years |  |
Maximum [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Concentration, Percentage |  |  | 10.00% | 10.00% |
Chicken Production Operations in China [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Property, Plant and Equipment, Transfers and Changes |  | 126 |  |  |
Goodwill, Impairment Loss |  | 23 |  |  |
Impairment of other assets |  | 20 |  |  |
Chicken Production Operations in China [Member] | Cost of Sales [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Asset Impairment Charges |  | 169 |  |  |
Chicken Production Operations in China [Member] | Cost of Sales [Member] | Other [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Asset Impairment Charges |  | 169 |  |  |
Chicken Production Operations in China [Member] | Fair Value, Measurements, Nonrecurring [Member] | Cost of Sales [Member] | Other [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Asset Impairment Charges |  | $ 169 |  |  |
Wal-Mart Stores, Inc. [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Concentration, Percentage |  |  | 18.90% | 20.00% |
[1] | Other included the goodwill from our foreign chicken operation.

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