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Quarterly Financial Data (Unaudited) (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 01, 2016 | Jul. 02, 2016 | Apr. 02, 2016 | Oct. 03, 2015 | Jun. 27, 2015 | Mar. 28, 2015 | Dec. 27, 2014 | Oct. 01, 2016 | Oct. 03, 2015 | Sep. 27, 2014
Quarterly Financial Data [Line Items] |  |  |  |  |  |  |  |  |  |
Tax Expense Adjustment- related to tax contingencies | $ 26 | $ 15 | $ 12 |  |  |  | $ 26 |  |  |
Gain (Loss) on Sale of Equity Investments |  |  |  |  | $ 21 |  |  |  |  |
Asset Impairment Charges |  |  |  |  |  |  |  | $ 45 | $ 285 | $ 107
Gain on disposition of Business |  |  |  |  |  |  |  | 0 | 177 | 0
Estimated Pretax Impact of Additional Week |  |  |  | $ 39 |  |  |  |  |  |
Cost of Sales [Member] | Chicken Production Operations in Mexico [Member] |  |  |  |  |  |  |  |  |  |
Quarterly Financial Data [Line Items] |  |  |  |  |  |  |  |  |  |
Gain on disposition of Business |  |  |  | 161 |  |  |  |  |  |
Hillshire Brands Company [Member] |  |  |  |  |  |  |  |  |  |
Quarterly Financial Data [Line Items] |  |  |  |  |  |  |  |  |  |
Business Combination, Acquisition Related Costs |  |  |  | 8 | 16 | $ 14 | 19 | $ 37 | $ 47 | 59
Pre-Tax Loss Related to Legacy Hillshire Brands Plant Fire |  |  |  |  |  |  | $ 36 |  |  |
Pre-Tax Gain due to Insurance Proceeds (Net of Costs) Related to a Legacy Hillshire Brands Plant Fire |  |  |  | 25 | $ 11 | $ 8 |  |  |  |
Chicken Production Operations in China [Member] | Cost of Sales [Member] |  |  |  |  |  |  |  |  |  |
Quarterly Financial Data [Line Items] |  |  |  |  |  |  |  |  |  |
Asset Impairment Charges |  |  |  | 169 |  |  |  |  |  |
Operating Segments [Member] | Prepared Foods [Member] | Facility Closing [Member] |  |  |  |  |  |  |  |  |  |
Quarterly Financial Data [Line Items] |  |  |  |  |  |  |  |  |  |
Asset Impairment Charges |  |  |  | 59 |  |  |  |  |  | $ 52
Operating Segments [Member] | Beef [Member] | Facility Closing [Member] |  |  |  |  |  |  |  |  |  |
Quarterly Financial Data [Line Items] |  |  |  |  |  |  |  |  |  |
Asset Impairment Charges |  |  |  | 12 |  |  |  |  |  |
Operating Segments [Member] | Cost of Sales [Member] | Prepared Foods [Member] | Facility Closing [Member] |  |  |  |  |  |  |  |  |  |
Quarterly Financial Data [Line Items] |  |  |  |  |  |  |  |  |  |
Asset Impairment Charges |  |  |  | $ 49 |  |  |  |  |  |

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