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Financial Instruments - Notional Amounts and Credit Risk Amounts Associated with Derivative Instruments (Details) - USD ($) $ in Millions | Jun. 26, 2021 | Sep. 26, 2020
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Derivatives designated as accounting hedges | Foreign exchange contracts |  |
Derivative [Line Items] |  |
Derivatives, notional amount | $ 53,914 | $ 57,410
Derivatives, credit risk amount | 700 | 749
Derivatives designated as accounting hedges | Interest rate contracts |  |
Derivative [Line Items] |  |
Derivatives, notional amount | 17,500 | 20,700
Derivatives, credit risk amount | 891 | 1,557
Derivatives not designated as accounting hedges | Foreign exchange contracts |  |
Derivative [Line Items] |  |
Derivatives, notional amount | 95,910 | 88,636
Derivatives, credit risk amount | $ 510 | $ 303

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- Definition Gross exposure to potential accounting loss on outstanding or unsettled derivative instruments that would arise if all counterparties failed to perform according to the terms of the contract. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

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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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Balance Type: | na
Period Type: | duration

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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=121590274&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=121590274&loc=SL5579245-113959 + Details
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- Details
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Namespace Prefix: |
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- Details
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- Details
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Balance Type: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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