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Derivative Instruments Designated as Fair Value Hedges and Related Hedged Items (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 27, 2020 | Jun. 29, 2019 | Jun. 27, 2020 | Jun. 29, 2019
OI&E |  |  |  |
Gains/(Losses) related to derivative instruments and hedged items: |  |  |  |
Gains/(Losses) on derivative instruments | $ (618) | $ 535 | $ 763 | $ 2,302
Gains/(Losses) related to hedged items | 618 | (535) | (763) | (2,301)
Foreign exchange contracts |  |  |  |
Carrying amounts of hedged assets/(liabilities) and cumulative hedging adjustments: |  |  |  |
Cumulative hedging adjustment increases/(decreases) included in the carrying amount of hedged marketable securities | (146) |  | (146) |
Foreign exchange contracts | Current marketable securities and non-current marketable securities |  |  |  |
Carrying amounts of hedged assets/(liabilities) and cumulative hedging adjustments: |  |  |  |
Carrying amount of hedged marketable securities | 15,736 |  | 15,736 |
Foreign exchange contracts | OI&E |  |  |  |
Gains/(Losses) related to derivative instruments and hedged items: |  |  |  |
Gains/(Losses) on derivative instruments | (675) | (136) | (422) | 509
Gains/(Losses) related to hedged items | 675 | 136 | 422 | (508)
Interest rate contracts |  |  |  |
Carrying amounts of hedged assets/(liabilities) and cumulative hedging adjustments: |  |  |  |
Cumulative hedging adjustment (increases)/decreases included in the carrying amount of hedged fixed-rate debt | (1,612) |  | (1,612) |
Interest rate contracts | Current term debt and non-current term debt |  |  |  |
Carrying amounts of hedged assets/(liabilities) and cumulative hedging adjustments: |  |  |  |
Carrying amount of hedged fixed-rate debt | (21,104) |  | (21,104) |
Interest rate contracts | OI&E |  |  |  |
Gains/(Losses) related to derivative instruments and hedged items: |  |  |  |
Gains/(Losses) on derivative instruments | 57 | 671 | 1,185 | 1,793
Gains/(Losses) related to hedged items | $ (57) | $ (671) | $ (1,185) | $ (1,793)

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- Definition Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109977999&loc=d3e76258-113986 + Details
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- Definition Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109977999&loc=d3e76258-113986 + 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=109980867&loc=SL109999712-113959 + Details
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