Consolidated Statements Of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Capital In Excess Of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss), Net Of Tax [Member]	Treasury Stock [Member]	Shareholders' Equity Attributable To Tyson [Member]	Equity Attributable To Noncontrolling Interests [Member]	Class A [Member]	Class B [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Accumulated Other Comprehensive Income (Loss), Net Of Tax [Member]
Balance at beginning of year, Common Stock shares at Sep. 30, 2017								378.0	70.0
Balance at beginning of year, Shareholders' Equity Attributable to Tyson at Sep. 30, 2017		$ 4,378	$ 9,740	$ 16	$ (3,674)			$ 38	$ 7
Balance at beginning of year, Treasury Stock shares at Sep. 30, 2017					80.0
Balance at beginning of year, Shareholders' Equity Attributable to Noncontrolling Interest at Sep. 30, 2017							$ 18
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Issuance of Class A common stock, shares								0.0
Issuance of Class A common stock								$ 0
Stock-based compensation		9			$ 158
Net income attributable to Tyson	$ 2,970		2,970
Dividends			(458)					$ (378)	$ (80)
Other Comprehensive Income (Loss)	(44)			(44)
Purchase of Class A common stock, shares					6.0			5.9
Purchase of Class A common stock					$ (427)
Stock-based compensation, shares					(4.0)
Net income attributable to noncontrolling interest	(3)						3
Distributions to noncontrolling interest							(3)
Business combination and other							(10)
Balance at end of year, Common Stock shares at Sep. 29, 2018								378.0	70.0
Balance at end of year, Shareholders' Equity Attributable to Tyson at Sep. 29, 2018		4,387	12,239	(15)	$ (3,943)	$ 12,713		$ 38	$ 7	$ (13)	$ 13
Balance at end of year, Treasury Stock shares at Sep. 29, 2018					82.0
Balance at end of year, Shareholders' Equity Attributable to Noncontrolling Interest at Sep. 29, 2018							8
Balance at end of year, Total Shareholders' Equity at Sep. 29, 2018	12,721
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income attributable to Tyson	530
Other Comprehensive Income (Loss)	531
Balance at end of year, Shareholders' Equity Attributable to Tyson at Dec. 29, 2018	13,016
Balance at end of year, Total Shareholders' Equity at Dec. 29, 2018	13,148
Balance at beginning of year, Common Stock shares at Sep. 29, 2018								378.0	70.0
Balance at beginning of year, Shareholders' Equity Attributable to Tyson at Sep. 29, 2018		4,387	12,239	(15)	$ (3,943)	12,713		$ 38	$ 7	(13)	13
Balance at beginning of year, Treasury Stock shares at Sep. 29, 2018					82.0
Balance at beginning of year, Shareholders' Equity Attributable to Noncontrolling Interest at Sep. 29, 2018							8
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Issuance of Class A common stock, shares								0.0
Issuance of Class A common stock								$ 0
Stock-based compensation		(9)			$ 184
Net income attributable to Tyson	1,980		1,980
Dividends			(564)					$ (465)	$ (99)
Other Comprehensive Income (Loss)	(102)			(102)
Purchase of Class A common stock, shares					4.0			3.7
Purchase of Class A common stock					$ (252)
Stock-based compensation, shares					(4.0)
Net income attributable to noncontrolling interest	(13)						13
Distributions to noncontrolling interest							(3)
Business combination and other							126
Balance at end of year, Common Stock shares at Sep. 28, 2019								378.0	70.0
Balance at end of year, Shareholders' Equity Attributable to Tyson at Sep. 28, 2019	$ 13,950	4,378	13,655	(117)	$ (4,011)	13,950		$ 38	$ 7	0	0
Balance at end of year, Treasury Stock shares at Sep. 28, 2019	82.0				82.0
Balance at end of year, Shareholders' Equity Attributable to Noncontrolling Interest at Sep. 28, 2019	$ 144						144
Balance at end of year, Total Shareholders' Equity at Sep. 28, 2019	14,094
Balance at beginning of year, Shareholders' Equity Attributable to Tyson at Dec. 29, 2018	13,016
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income attributable to Tyson	394
Other Comprehensive Income (Loss)	398
Balance at end of year, Shareholders' Equity Attributable to Tyson at Mar. 30, 2019	13,280
Balance at end of year, Total Shareholders' Equity at Mar. 30, 2019	13,415
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income attributable to Tyson	684
Other Comprehensive Income (Loss)	689
Balance at end of year, Shareholders' Equity Attributable to Tyson at Jun. 29, 2019	13,793
Balance at end of year, Total Shareholders' Equity at Jun. 29, 2019	14,006
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income attributable to Tyson	372
Other Comprehensive Income (Loss)	375
Balance at end of year, Common Stock shares at Sep. 28, 2019								378.0	70.0
Balance at end of year, Shareholders' Equity Attributable to Tyson at Sep. 28, 2019	$ 13,950	4,378	13,655	(117)	$ (4,011)	13,950		$ 38	$ 7	0	0
Balance at end of year, Treasury Stock shares at Sep. 28, 2019	82.0				82.0
Balance at end of year, Shareholders' Equity Attributable to Noncontrolling Interest at Sep. 28, 2019	$ 144						144
Balance at end of year, Total Shareholders' Equity at Sep. 28, 2019	14,094
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income attributable to Tyson	505
Other Comprehensive Income (Loss)	509
Balance at end of year, Shareholders' Equity Attributable to Tyson at Dec. 28, 2019	14,235
Balance at end of year, Total Shareholders' Equity at Dec. 28, 2019	14,382
Balance at beginning of year, Common Stock shares at Sep. 28, 2019								378.0	70.0
Balance at beginning of year, Shareholders' Equity Attributable to Tyson at Sep. 28, 2019	$ 13,950	4,378	13,655	(117)	$ (4,011)	13,950		$ 38	$ 7	0	0
Balance at beginning of year, Treasury Stock shares at Sep. 28, 2019	82.0				82.0
Balance at beginning of year, Shareholders' Equity Attributable to Noncontrolling Interest at Sep. 28, 2019	$ 144						144
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Issuance of Class A common stock, shares								0.0
Issuance of Class A common stock								$ 0
Stock-based compensation		55			$ 73
Net income attributable to Tyson	2,061		2,061
Dividends			(616)					$ (508)	(108)
Other Comprehensive Income (Loss)	(62)			(62)
Purchase of Class A common stock, shares					2.0			2.5
Purchase of Class A common stock					$ (207)
Stock-based compensation, shares					(1.0)
Net income attributable to noncontrolling interest	$ (10)						10
Distributions to noncontrolling interest							(13)
Business combination and other							(9)
Balance at end of year, Common Stock shares at Oct. 03, 2020	70.0							378.0
Balance at end of year, Shareholders' Equity Attributable to Tyson at Oct. 03, 2020	$ 15,254	4,433	15,100	(179)	$ (4,145)	15,254		$ 38	7	0	0
Balance at end of year, Treasury Stock shares at Oct. 03, 2020	83.0				83.0
Balance at end of year, Shareholders' Equity Attributable to Noncontrolling Interest at Oct. 03, 2020	$ 132						132
Balance at end of year, Total Shareholders' Equity at Oct. 03, 2020	15,386
Balance at beginning of year, Shareholders' Equity Attributable to Tyson at Dec. 28, 2019	14,235
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income attributable to Tyson	376
Other Comprehensive Income (Loss)	379
Balance at end of year, Shareholders' Equity Attributable to Tyson at Mar. 28, 2020	14,277
Balance at end of year, Total Shareholders' Equity at Mar. 28, 2020	14,422
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income attributable to Tyson	526
Other Comprehensive Income (Loss)	526
Balance at end of year, Shareholders' Equity Attributable to Tyson at Jun. 27, 2020	14,685
Balance at end of year, Total Shareholders' Equity at Jun. 27, 2020	14,831
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income attributable to Tyson	654
Other Comprehensive Income (Loss)	$ 657
Balance at end of year, Common Stock shares at Oct. 03, 2020	70.0							378.0
Balance at end of year, Shareholders' Equity Attributable to Tyson at Oct. 03, 2020	$ 15,254	$ 4,433	$ 15,100	$ (179)	$ (4,145)	$ 15,254		$ 38	$ 7	$ 0	$ 0
Balance at end of year, Treasury Stock shares at Oct. 03, 2020	83.0				83.0
Balance at end of year, Shareholders' Equity Attributable to Noncontrolling Interest at Oct. 03, 2020	$ 132						$ 132
Balance at end of year, Total Shareholders' Equity at Oct. 03, 2020	$ 15,386