Restructuring Narrative (Details) - USD ($)	3 Months Ended						12 Months Ended
	Oct. 03, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 37,000,000		$ 0				$ 37,000,000	$ 0
Restructuring and Related Cost, Incurred Cost							77,000,000	41,000,000	$ 59,000,000
Restructuring and Related Cost, Cost Incurred to Date	327,000,000						327,000,000
Payments for Restructuring							40,000,000
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost							60,000,000
2020 Program [Member] | Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost							17,000,000
2020 Program [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost							43,000,000
2017 Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost								41,000,000	59,000,000
Restructuring and Related Cost, Cost Incurred to Date	267,000,000						267,000,000
2017 Program [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost							17,000,000
Financial Fitness Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	23,000,000	$ 52,000,000	$ 10,000,000	$ 15,000,000	$ 8,000,000	$ 8,000,000
Employee Severance [Member] | 2020 Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost							60,000,000
Employee Severance [Member] | 2017 Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	53,000,000						53,000,000
New Technology Implementation and Accelerated Depreciation of Technology Assets Cost [Member] | 2017 Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost							17,000,000
Restructuring and Related Cost, Cost Incurred to Date	117,000,000						117,000,000
Technology Impairment and Related Costs [Member] | 2017 Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	72,000,000						72,000,000
Contract Termination [Member] | 2017 Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	25,000,000						25,000,000
Beef [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost							9,000,000	1,000,000	4,000,000
Restructuring and Related Cost, Cost Incurred to Date	22,000,000						22,000,000
Pork [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost							3,000,000	1,000,000	1,000,000
Restructuring and Related Cost, Cost Incurred to Date	8,000,000						8,000,000
Chicken [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost							34,000,000	21,000,000	30,000,000
Restructuring and Related Cost, Cost Incurred to Date	141,000,000						141,000,000
Prepared Foods [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost							28,000,000	18,000,000	24,000,000
Restructuring and Related Cost, Cost Incurred to Date	152,000,000						152,000,000
Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost							3,000,000	$ 0	$ 0
Restructuring and Related Cost, Cost Incurred to Date	$ 4,000,000						$ 4,000,000