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Segment Reporting (Narrative) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 30, 2019 USD ($)	Mar. 31, 2018 USD ($)	Mar. 30, 2019 USD ($) Segments	Mar. 31, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | Segments			4
Sales	$ 10,443	$ 9,773	$ 20,636	$ 20,002
Beef
Segment Reporting Information [Line Items]
Sales	3,884		7,810
Pork
Segment Reporting Information [Line Items]
Sales	1,172		2,351
Chicken
Segment Reporting Information [Line Items]
Sales	3,407		6,522
Intersegment Elimination
Segment Reporting Information [Line Items]
Sales	(324)	(361)	(643)	(678)
Intersegment Elimination | Beef
Segment Reporting Information [Line Items]
Sales	(100)	(105)	(190)	(199)
Intersegment Elimination | Pork
Segment Reporting Information [Line Items]
Sales	(211)	(231)	(426)	(432)
Intersegment Elimination | Chicken
Segment Reporting Information [Line Items]
Sales	$ (13)	$ (25)	$ (27)	$ (47)

X

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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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).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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