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Financial Instruments - Derivative Instruments Designated as Fair Value Hedges and Related Hedged Items (Details) - USD ($) $ in Millions | Mar. 26, 2022 | Sep. 25, 2021
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Current and non-current marketable securities |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Carrying amount of hedged marketable securities | $ 14,943 | $ 15,954
Current and non-current term debt |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Carrying amount of hedged term debt | $ (19,766) | $ (17,857)

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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 Amount of asset hedged in fair value hedging relationship. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4EE -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL109999712-113959 + Details
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- Definition Amount of liability hedged in fair value hedging relationship. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4EE -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL109999712-113959 + Details
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