Consolidated Statements Of Cash Flows $ in Millions	12 Months Ended
	Oct. 03, 2020 USD ($)	Sep. 28, 2019 USD ($)	Sep. 29, 2018 USD ($)
Statement of Cash Flows [Abstract]
Restricted Cash	$ 46	$ 0	$ 0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	1,466	484	270
Cash Flows From Operating Activities:
Net Income	2,071	1,993	2,973
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	900	819	723
Amortization	292	279	220
Deferred income taxes	18	77	(874)
Gain on dispositions of businesses	0	17	42
Impairment of assets	48	94	175
Stock-based compensation expense	89	77	69
Other, net	(124)	(20)	(58)
(Increase) decrease in accounts receivable	191	(226)	(2)
(Increase) decrease in inventories	86	(157)	(144)
Increase (decrease) in accounts payable	(64)	(55)	(44)
Increase (decrease) in income taxes payable/receivable	62	(254)	111
Increase (decrease) in interest payable	(41)	47	(3)
Net changes in other operating assets and liabilities	346	(144)	(141)
Cash Provided by Operating Activities	3,874	2,513	2,963
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(1,199)	(1,259)	(1,200)
Purchases of marketable securities	(105)	(64)	(42)
Proceeds from sale of marketable securities	87	63	37
Acquisitions, net of cash acquired	0	(2,462)	(1,474)
Proceeds from sale of businesses	29	170	797
Payments to Acquire Equity Method Investments	(183)	0	0
Other, net	(52)	88	(24)
Cash Used for Investing Activities	(1,423)	(3,464)	(1,906)
Cash Flows from Financing Activities:
Proceeds from issuance of debt	1,609	4,634	1,148
Payments on debt	1,212	3,208	1,307
Borrowings on revolving credit facility	1,210	1,135	1,755
Payments on revolving credit facility	(1,280)	(1,065)	(1,755)
Proceeds from issuance of commercial paper	14,272	17,722	21,024
Repayments of commercial paper	(15,271)	(17,327)	(21,197)
Purchases of Tyson Class A common stock	(207)	(252)	(427)
Dividends	(601)	(537)	(431)
Stock options exercised	30	99	102
Other, net	(18)	(30)	(14)
Cash Provided by (Used for) Financing Activities	(1,468)	1,171	(1,102)
Effect of Exchange Rate Change on Cash	(1)	(6)	(3)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	982	214	(48)
Cash and Cash Equivalents and Restricted Cash at Beginning of Year	484	270
Cash and Cash Equivalents at End of Year	$ 1,420	$ 484	$ 270