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Goodwill And Intangible Assets (Goodwill Activity) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Oct. 03, 2020 | Sep. 28, 2019 | Sep. 29, 2018
Goodwill [Roll Forward] |  |  |
Goodwill, beginning of period | $ 11,461 | $ 10,356 |
Accumulated impairment losses | (617) | (617) | $ (617)
Goodwill, net | 10,899 | 10,844 | 9,739
Acquisition |  | 1,121 |
Goodwill, Written off Related to Sale of Business Unit |  | (77) |
Goodwill, Foreign Currency Translation Gain (Loss) | 9 | (5) |
Measurement period adjustments | 46 | 66 |
Goodwill, end of period | 11,516 | 11,461 |
Beef [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning of period | 1,236 | 1,236 |
Accumulated impairment losses | (560) | (560) | (560)
Goodwill, net | 676 | 676 | 676
Acquisition |  | 0 |
Goodwill, Written off Related to Sale of Business Unit |  | 0 |
Goodwill, Foreign Currency Translation Gain (Loss) | 0 | 0 |
Measurement period adjustments | 0 | 0 |
Goodwill, end of period | 1,236 | 1,236 |
Pork [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning of period | 423 | 423 |
Accumulated impairment losses | 0 | 0 | 0
Goodwill, net | 423 | 423 | 423
Acquisition |  | 0 |
Goodwill, Written off Related to Sale of Business Unit |  | 0 |
Goodwill, Foreign Currency Translation Gain (Loss) | 0 | 0 |
Measurement period adjustments | 0 | 0 |
Goodwill, end of period | 423 | 423 |
Chicken [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning of period | 3,274 | 2,498 |
Accumulated impairment losses | 0 | 0 | 0
Goodwill, net | 3,274 | 3,274 | 2,498
Acquisition |  | 779 |
Goodwill, Written off Related to Sale of Business Unit |  | (70) |
Goodwill, Foreign Currency Translation Gain (Loss) | 0 | 1 |
Measurement period adjustments | 0 | 66 |
Goodwill, end of period | 3,274 | 3,274 |
Prepared Foods [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning of period | 6,134 | 6,142 |
Accumulated impairment losses | 0 | 0 | 0
Goodwill, net | 6,134 | 6,134 | 6,142
Acquisition |  | 0 |
Goodwill, Written off Related to Sale of Business Unit |  | (7) |
Goodwill, Foreign Currency Translation Gain (Loss) | 0 | (1) |
Measurement period adjustments | 0 | 0 |
Goodwill, end of period | 6,134 | 6,134 |
Other [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning of period | 394 | 57 |
Accumulated impairment losses | (57) | (57) | (57)
Goodwill, net | 392 | 337 | 0
Acquisition |  | 342 |
Goodwill, Written off Related to Sale of Business Unit |  | 0 |
Goodwill, Foreign Currency Translation Gain (Loss) | 9 | (5) |
Measurement period adjustments | 46 | 0 |
Goodwill, end of period | 449 | 394 |
Unallocated Goodwill [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning of period | 0 | 0 |
Accumulated impairment losses | 0 | 0 | 0
Goodwill, net | 0 | 0 | $ 0
Acquisition |  | 0 |
Goodwill, Written off Related to Sale of Business Unit |  | 0 |
Goodwill, Foreign Currency Translation Gain (Loss) | 0 | 0 |
Measurement period adjustments | 0 | 0 |
Goodwill, end of period | $ 0 | $ 0 |

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