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Acquisitions (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended		9 Months Ended	12 Months Ended
	Nov. 10, 2017	Jun. 07, 2017	Sep. 30, 2017	Jul. 01, 2017	Jul. 02, 2016	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Business Acquisition [Line Items]
Goodwill			$ 9,324			$ 9,324	$ 6,669	$ 6,667
AdvancePierre [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred, Per Share of Common Stock		$ 40.25
Business Combination, Consideration Transferred		$ 3,200
Goodwill		2,982
Business Acquisition, Goodwill, Expected Tax Deductible Amount		$ 163
Revenues						508
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			14	$ 35		67
AdvancePierre [Member] | Fair Value Adjustment to Inventory [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory			$ 12	$ 24		$ 36
Valued-Added Protein Business [Member] | Subsequent Event [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 225

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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