Goodwill And Other Intangible Assets (Goodwill Activity) (Details) - USD ($) $ in Millions		12 Months Ended
		Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Goodwill [Roll Forward]
Goodwill, beginning of period		$ 7,284	$ 7,300
Accumulated impairment losses		(617)	(617)	$ (594)
Goodwill, net		6,669	6,667	6,706
Goodwill, Purchase Accounting Adjustments			(14)
Allocation of Acquired Goodwill			0
Impairment losses			(23)
Currency translation and other		2	(2)
Goodwill, end of period		7,286	7,284
Chicken [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period		1,563	907
Accumulated impairment losses		0	0	0
Goodwill, net		1,565	1,563	907
Goodwill, Purchase Accounting Adjustments			0
Allocation of Acquired Goodwill			658
Impairment losses			0
Currency translation and other		2	(2)
Goodwill, end of period		1,565	1,563
Beef [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period		1,236	1,123
Accumulated impairment losses		(560)	(560)	(560)
Goodwill, net		676	676	563
Goodwill, Purchase Accounting Adjustments			0
Allocation of Acquired Goodwill			113
Impairment losses			0
Currency translation and other		0	0
Goodwill, end of period		1,236	1,236
Pork [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period		423	317
Accumulated impairment losses		0	0	0
Goodwill, net		423	423	317
Goodwill, Purchase Accounting Adjustments			0
Allocation of Acquired Goodwill			106
Impairment losses			0
Currency translation and other		0	0
Goodwill, end of period		423	423
Prepared Foods [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period		4,005	92
Accumulated impairment losses		0	0	0
Goodwill, net		4,005	4,005	92
Goodwill, Purchase Accounting Adjustments			0
Allocation of Acquired Goodwill			3,913
Impairment losses			0
Currency translation and other		0	0
Goodwill, end of period		4,005	4,005
Other [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	57	57
Accumulated impairment losses	[1]	(57)	(57)	(34)
Goodwill, net	[1]	0	0	23
Goodwill, Purchase Accounting Adjustments	[1]		0
Allocation of Acquired Goodwill	[1]		0
Impairment losses	[1]		(23)
Currency translation and other	[1]	0	0
Goodwill, end of period	[1]	57	57
Unallocated Goodwill [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period		0	4,804
Accumulated impairment losses		0	0	0
Goodwill, net		0	0	$ 4,804
Goodwill, Purchase Accounting Adjustments			(14)
Allocation of Acquired Goodwill			(4,790)
Impairment losses			0
Currency translation and other		0	0
Goodwill, end of period		$ 0	$ 0

[1] Other included the goodwill from our foreign chicken operation.