Current and Estimated Restructuring Charges (Details) - Financial Fitness Program [Member] $ in Millions	3 Months Ended	12 Months Ended
Sep. 30, 2017 USD ($)	Sep. 30, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 150	$ 150
Restructuring and Related Cost, Expected Cost Remaining	65	65
Restructuring and Related Cost, Expected Cost	215	215
Operating Segments [Member] \| Beef [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost		8
Restructuring and Related Cost, Expected Cost Remaining	6	6
Restructuring and Related Cost, Expected Cost	14	14
Operating Segments [Member] \| Pork [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost		3
Restructuring and Related Cost, Expected Cost Remaining	2	2
Restructuring and Related Cost, Expected Cost	5	5
Operating Segments [Member] \| Chicken [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost		56
Restructuring and Related Cost, Expected Cost Remaining	32	32
Restructuring and Related Cost, Expected Cost	88	88
Operating Segments [Member] \| Prepared Foods [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost		82
Restructuring and Related Cost, Expected Cost Remaining	25	25
Restructuring and Related Cost, Expected Cost	107	107
Segment Reconciling Items [Member] \| Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost		1
Restructuring and Related Cost, Expected Cost Remaining	0	0
Restructuring and Related Cost, Expected Cost	$ 1	$ 1

Amount expected to be recognized in earnings for the specified restructuring cost.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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