Current and Estimated Restructuring Charges (Details) - Financial Fitness Program [Member] - USD ($) $ in Millions	3 Months Ended					12 Months Ended
	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 14	$ 14	$ 12	$ 19	$ 150	$ 59	$ 150
Restructuring and Related Cost, Expected Cost Remaining	44					44
Restructuring and Related Cost, Expected Cost	253					253
Operating Segments [Member] \| Beef [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost						4	8
Restructuring and Related Cost, Expected Cost Remaining	6					6
Restructuring and Related Cost, Expected Cost	18					18
Operating Segments [Member] \| Pork [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost						1	3
Restructuring and Related Cost, Expected Cost Remaining	3					3
Restructuring and Related Cost, Expected Cost	7					7
Operating Segments [Member] \| Chicken [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost						30	56
Restructuring and Related Cost, Expected Cost Remaining	16					16
Restructuring and Related Cost, Expected Cost	102					102
Operating Segments [Member] \| Prepared Foods [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost						24	82
Restructuring and Related Cost, Expected Cost Remaining	19					19
Restructuring and Related Cost, Expected Cost	125					125
Segment Reconciling Items [Member] \| Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost						0	$ 1
Restructuring and Related Cost, Expected Cost Remaining	0					0
Restructuring and Related Cost, Expected Cost	$ 1					$ 1