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Restructuring and Related Charges Restructuring (Details) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 27, 2020 USD ($)	Jun. 29, 2019 USD ($)	Jun. 27, 2020 USD ($)	Jun. 29, 2019 USD ($)	Sep. 28, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 319		$ 319
Restructuring and Related Cost, Incurred Cost	(2)		(54)
Restructuring and Related Cost, Cost Incurred to Date	304		304
Payments for Restructuring			$ 28
Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated			500
2017 Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	280		$ 280
Restructuring and Related Cost, Cost Incurred to Date	265		265
Financial Fitness Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	26		26		$ 0
Cost of Sales \| Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost			(5)
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost			(49)
Selling, General and Administrative Expenses [Member] \| Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost			(34)
Employee Severance [Member] \| Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost			(39)
Technology Impairment and Related Costs [Member] \| 2017 Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining	15		15
Restructuring and Related Cost, Incurred Cost	(2)		(15)
Technology Impairment and Related Costs [Member] \| Selling, General and Administrative Expenses [Member] \| 2017 Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost		$ (15)		$ (31)
Beef [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	18		18
Restructuring and Related Cost, Incurred Cost	0		(5)
Restructuring and Related Cost, Cost Incurred to Date	18		18
Pork [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	7		7
Restructuring and Related Cost, Incurred Cost	0		(2)
Restructuring and Related Cost, Cost Incurred to Date	7		7
Chicken [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	136		136
Restructuring and Related Cost, Incurred Cost	(1)		(22)
Restructuring and Related Cost, Cost Incurred to Date	129		129
Prepared Foods [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	155		155
Restructuring and Related Cost, Incurred Cost	(1)		(23)
Restructuring and Related Cost, Cost Incurred to Date	147		147
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	3		3
Restructuring and Related Cost, Incurred Cost	0		(2)
Restructuring and Related Cost, Cost Incurred to Date	$ 3		$ 3