Derivative Financial Instruments (Pretax Impact Of Undesignated Derivative Instruments On The Consolidated Statements Of Income) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Derivative [Line Items]
Cost of Sales	$ 8,709	$ 9,549	$ 27,951	$ 27,638
Other Nonoperating Income (Expense)	(11)	(62)	(133)	(72)
Interest expense	122	121	361	339
Cost of Sales
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(12)	102	(69)	69
Not Designated as Hedging Instrument \| Commodity contracts \| Sales
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	(42)	0	(28)
Not Designated as Hedging Instrument \| Commodity contracts \| Cost of Sales
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(74)	97	(171)	76
Not Designated as Hedging Instrument \| Foreign exchange contracts \| Other income/expense
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(4)	4	(3)	7
Fair Value Hedging [Member] \| Commodity contracts \| Cost of Sales
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	69	8	116	8
Cash Flow Hedging [Member] \| Commodity contracts \| Cost of Sales
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(7)	(3)	(14)	(15)
Cash Flow Hedging [Member] \| Interest Rate Contract [Member] \| Interest Expense [Member]
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (1)	$ (1)	$ (3)	$ (1)

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

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-Name Accounting Standards Codification
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-Subparagraph (SX 210.5-03.2(a),(d))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
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Interest and debt related expenses associated with nonoperating financing activities of the entity.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
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