Segment Reporting (Segment Reporting Information, By Segment) (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Oct. 02, 2021
Segment Reporting Information [Line Items]
Sales	$ 12,933	$ 10,460
Operating Income (Loss)	1,455	705
Total other expense	45	89
Income before income taxes	1,410	616
Loss Contingency Accrual	390		$ 567
Beef [Member]
Segment Reporting Information [Line Items]
Sales	5,002	3,987
Beef [Member] | Revised Results due to misappropriated Company funds [Member]
Segment Reporting Information [Line Items]
Unusual or Infrequent Item, or Both, Net (Gain) Loss		55
Pork [Member]
Segment Reporting Information [Line Items]
Sales	1,626	1,439
Chicken [Member]
Segment Reporting Information [Line Items]
Sales	3,890	2,831
Unusual or Infrequent Item, or Both, Insurance Proceeds	23
Prepared Foods [Member]
Segment Reporting Information [Line Items]
Sales	2,333	2,113
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Sales	550	469
Operating Segments [Member] | Beef [Member]
Segment Reporting Information [Line Items]
Sales	5,002	3,987
Operating Income (Loss)	956	528
Operating Segments [Member] | Pork [Member]
Segment Reporting Information [Line Items]
Sales	1,626	1,439
Operating Income (Loss)	164	116
Operating Segments [Member] | Chicken [Member]
Segment Reporting Information [Line Items]
Sales	3,890	2,831
Operating Income (Loss)	140	(216)
Operating Segments [Member] | Prepared Foods [Member]
Segment Reporting Information [Line Items]
Sales	2,333	2,113
Operating Income (Loss)	186	266
Segment Reconciling Items [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Sales	550	469
Operating Income (Loss)	9	11
Intersegment Eliminations
Segment Reporting Information [Line Items]
Sales	$ (468)	(379)
Sales | Chicken [Member]
Segment Reporting Information [Line Items]
Loss Contingency, Loss in Period		$ 320