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Acquisition and Dispositions Acquisition (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions |  | 9 Months Ended |
--- | --- | --- | ---
Jun. 07, 2017 | Jul. 01, 2017 | Jul. 02, 2016 | Oct. 01, 2016
Business Acquisition [Line Items] |  |  |  |
Goodwill |  | $ 9,264 |  | $ 6,669
AdvancePierre [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Combination, Consideration Transferred, Per Share of Common Stock | $ 40.25 |  |  |
Business Combination, Consideration Transferred | $ 3,200 |  |  |
Goodwill | $ 2,922 |  |  |
AdvancePierre [Member] | Acquisition-related Costs [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business acquisition, Pro Forma Information, Transaction Related Expenses Incurred by Acquiree included in Pro Forma Results |  |  | $ 84 |
Business acquisition, Pro Forma Information, Transaction Related Expenses Incurred Included in Pro Forma Results |  |  | $ 53 |
AdvancePierre [Member] | Fair Value Adjustment to Inventory [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Combination, Fair Inventory Inventory Adjustment |  | $ 36 |  |

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