Earnings Per Share (Schedule Of Earnings Per Share, Basic And Diluted) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Oct. 03, 2020	Jun. 27, 2020	Mar. 28, 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
Earnings Per Share, Basic and Diluted [Line Items]
Net Income	$ 657	$ 526	$ 379	$ 509	$ 375	$ 689	$ 398	$ 531	$ 2,071	$ 1,993	$ 2,973
Less: Net income attributable to noncontrolling interest									10	13	3
Net Income Attributable to Tyson	$ 654	$ 526	$ 376	$ 505	$ 372	$ 684	$ 394	$ 530	2,061	1,980	2,970
Undistributed earnings									$ 1,445	$ 1,416	$ 2,512
Stock options and restricted stock									2	3	4
Denominator for diluted earnings per share - adjusted weighted average shares and assumed conversions									365	366	369
Net Income Per Share Attributable to Tyson - Diluted	$ 1.79	$ 1.44	$ 1.03	$ 1.38	$ 1.01	$ 1.87	$ 1.08	$ 1.44	$ 5.64	$ 5.40	$ 8.04
Class A [Member]
Earnings Per Share, Basic and Diluted [Line Items]
Less dividends declared:									$ 508	$ 465	$ 378
Undistributed earnings									$ 1,189	$ 1,166	$ 2,070
Weighted average number of shares outstanding - Basic									293	293	295
Net Income Per Share Attributable to Tyson - Basic	1.83	1.48	1.06	1.42	1.04	1.92	1.11	1.49	$ 5.79	$ 5.56	$ 8.29
Common Stock, Dividends, Per Share, Declared									$ 1.725	$ 1.575	$ 1.275
Class B [Member]
Earnings Per Share, Basic and Diluted [Line Items]
Less dividends declared:									$ 108	$ 99	$ 80
Undistributed earnings									$ 256	$ 250	$ 442
Weighted average number of shares outstanding - Basic									70	70	70
Net Income Per Share Attributable to Tyson - Basic	$ 1.66	$ 1.33	$ 0.95	$ 1.27	$ 0.93	$ 1.73	$ 0.99	$ 1.34	$ 5.21	$ 4.99	$ 7.46
Common Stock, Dividends, Per Share, Declared									$ 1.553	$ 1.418	$ 1.148