Derivative Instruments - Additional Information (Details) - USD ($) $ in Millions	6 Months Ended
Mar. 28, 2020	Sep. 28, 2019
Derivative [Line Items]
Hedging Period for Foreign Currency Transactions, Maximum	4 years
Net deferred gains recorded in AOCI for contracts that will mature in the next twelve months	$ 324
Aggregate fair value of derivative instruments with credit-risk-related contingent features in a net liability position by counterparty	62	$ 65
Derivatives designated as hedges \| Interest rate \| Fair Value Hedging
Derivative [Line Items]
Derivative, Notional Amount	10,900	9,900
Derivatives designated as hedges \| Foreign exchange \| Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount	5,600	6,300
Not Designated as Hedging Instrument \| Interest rate
Derivative [Line Items]
Derivative, Notional Amount	2,000
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value	2	11
Not Designated as Hedging Instrument \| Foreign exchange
Derivative [Line Items]
Derivative, Notional Amount	$ 4,200	$ 3,800

Hedged Instruments Maturity Upper Limit

No definition available.

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- Definition

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80748-113994

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4H
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624258-113959

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

+ Details

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- Definition

Fair value as of the balance sheet date of all derivative liabilities not designated as hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959

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