Accounting Policies Changes in Accounting Principles (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020	Apr. 03, 2021	Oct. 03, 2020	Mar. 28, 2020	Sep. 28, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Selling, General and Administrative	$ 558	$ 540	$ 1,563	$ 1,728
Operating Income (Loss)	1,062	773	2,487	2,046
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	966	665	2,206	1,827
Income Tax Expense	213	139	504	413
Net Income	753	526	1,702	1,414
Net income attributable to Tyson	$ 749	$ 526	$ 1,692	$ 1,407
Diluted (USD per share)	$ 2.05	$ 1.44	$ 4.63	$ 3.85
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 778	$ 539	$ 1,756	$ 1,314
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	774	539	1,746	1,307
Inventory, Net	4,262	3,680	4,262	3,680		$ 3,859
Assets, Current	9,208	7,464	9,208	7,464		7,598
Assets	35,663	34,323	35,663	34,323		34,456
Deferred Income Taxes	2,308	2,308	2,308	2,308		2,317
Retained earnings	(16,305)	(14,596)	(16,305)	(14,596)		(15,100)
Total Tyson Shareholders’ Equity	16,561	14,685	16,561	14,685		15,254
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	16,693	14,831	16,693	14,831		15,386
Liabilities and Equity	35,663	34,323	35,663	34,323		34,456
Deferred income taxes			(3)	12
Increase (Decrease) in Operating Capital			(21)	413
Restricted Cash	$ 195	$ 82	$ 195	$ 82
Class A [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Basic (USD per share)	$ 2.11	$ 1.48	$ 4.76	$ 3.96
Total Tyson Shareholders’ Equity	$ 38	$ 38	$ 38	$ 38	$ 38	38	$ 38	$ 38
Class B [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Basic (USD per share)	$ 1.89	$ 1.33	$ 4.27	$ 3.55
Total Tyson Shareholders’ Equity	$ 7	$ 7	$ 7	$ 7	$ 7	$ 7	$ 7	7
Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Selling, General and Administrative		538		1,672
Operating Income (Loss)		775		2,102
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		667		1,883
Income Tax Expense		140		428
Net Income		527		1,455
Net income attributable to Tyson		$ 527		$ 1,448
Diluted (USD per share)		$ 1.44		$ 3.96
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest		$ 540		$ 1,355
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		540		1,348
Inventory, Net		3,915		3,915
Assets, Current		7,699		7,699
Assets		34,558		34,558
Deferred Income Taxes		2,370		2,370
Retained earnings		(14,769)		(14,769)
Total Tyson Shareholders’ Equity		14,858		14,858
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		15,004		15,004
Liabilities and Equity		$ 34,558		34,558
Deferred income taxes				27
Increase (Decrease) in Operating Capital				$ 357
Previously Reported [Member] | Class A [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Basic (USD per share)		$ 1.48		$ 4.07
Previously Reported [Member] | Class B [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Basic (USD per share)		$ 1.33		$ 3.65
Revision of Prior Period, Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Selling, General and Administrative		$ 2		$ 56
Operating Income (Loss)		(2)		(56)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		(2)		(56)
Income Tax Expense		(1)		(15)
Net Income		(1)		(41)
Net income attributable to Tyson		$ (1)		$ (41)
Diluted (USD per share)		$ 0		$ (0.11)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest		$ (1)		$ (41)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(1)		(41)
Inventory, Net		(235)		(235)
Assets, Current		(235)		(235)
Assets		(235)		(235)
Deferred Income Taxes		(62)		(62)
Retained earnings		173		173				$ (132)
Total Tyson Shareholders’ Equity		(173)		(173)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		(173)		(173)
Liabilities and Equity		$ (235)		(235)
Deferred income taxes				(15)
Increase (Decrease) in Operating Capital				$ 56
Revision of Prior Period, Adjustment [Member] | Class A [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Basic (USD per share)		$ 0		$ (0.11)
Revision of Prior Period, Adjustment [Member] | Class B [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Basic (USD per share)		$ 0		$ (0.10)