Segment Reporting (Segment Reporting Information, By Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Mar. 28, 2015	Mar. 29, 2014	Mar. 28, 2015	Mar. 29, 2014
Segment Reporting Information [Line Items]
Sales	$ 9,979us-gaap_SalesRevenueNet	$ 9,032us-gaap_SalesRevenueNet	$ 20,796us-gaap_SalesRevenueNet	$ 17,793us-gaap_SalesRevenueNet
Operating Income (Loss)	547us-gaap_OperatingIncomeLoss	361us-gaap_OperatingIncomeLoss	1,056us-gaap_OperatingIncomeLoss	773us-gaap_OperatingIncomeLoss
Total Other (Income) Expense	64us-gaap_NonoperatingIncomeExpense	20us-gaap_NonoperatingIncomeExpense	138us-gaap_NonoperatingIncomeExpense	49us-gaap_NonoperatingIncomeExpense
Income before Income Taxes	483	341	918	724
Operating Segments [Member] \| Chicken [Member]
Segment Reporting Information [Line Items]
Sales	2,829	2,842	5,609	5,498
Operating Income (Loss)	332	234	683	487
Operating Segments [Member] \| Beef [Member]
Segment Reporting Information [Line Items]
Sales	4,130	3,825	8,521	7,559
Operating Income (Loss)	(20)	35	(26)	93
Operating Segments [Member] \| Pork [Member]
Segment Reporting Information [Line Items]
Sales	1,204	1,487	2,744	2,911
Operating Income (Loss)	99	107	221	228
Operating Segments [Member] \| Prepared Foods [Member]
Segment Reporting Information [Line Items]
Sales	1,871	861	4,004	1,768
Operating Income (Loss)	160	21	231	37
Operating Segments [Member] \| International [Member]
Segment Reporting Information [Line Items]
Sales	222	328	527	655
Operating Income (Loss)	(15)	(30)	(29)	(58)
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Sales	0	0	0	0
Operating Income (Loss)	(9)	(6)	(24)	(14)
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Sales	(277)	(311)	(609)	(598)
Intersegment Elimination [Member] \| Chicken [Member]
Segment Reporting Information [Line Items]
Sales	6	2	7	4
Intersegment Elimination [Member] \| Beef [Member]
Segment Reporting Information [Line Items]
Sales	77	67	155	130
Intersegment Elimination [Member] \| Pork [Member]
Segment Reporting Information [Line Items]
Sales	$ 194	$ 242	$ 447	$ 464

This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 940

-SubTopic 20

-Section 25

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35710027&loc=d3e41242-110953

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 10

-Article 5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.7)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Article 5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
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