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Financial Instruments - Pre-Tax Gains and Losses of Derivative and Non-Derivative Instruments Designated as Cash Flow and Net Investment Hedges (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 26, 2020 | Sep. 28, 2019 | Sep. 29, 2018
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains/(Losses) recognized in OCI – included in effectiveness assessment, cash flow hedges | $ 308 |  |
Gains/(Losses) reclassified from AOCI into net income – included in effectiveness assessment, cash flow hedges | 1,545 |  |
Foreign exchange contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains/(Losses) recognized in OCI – included in effectiveness assessment, cash flow hedges | 365 |  |
Gains/(Losses) reclassified from AOCI into net income – included in effectiveness assessment, cash flow hedges | 1,553 |  |
Interest rate contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains/(Losses) recognized in OCI – included in effectiveness assessment, cash flow hedges | (57) |  |
Gains/(Losses) reclassified from AOCI into net income – included in effectiveness assessment, cash flow hedges | (8) |  |
Foreign currency debt |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains/(Losses) recognized in OCI – included in effectiveness assessment, net investment hedges | $ 15 |  |
Gains/(Losses) recognized in OCI – included in effectiveness assessment, net investment hedges |  | $ (58) | $ 4
Cash flow hedges |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains/(Losses) recognized in OCI – included in effectiveness assessment, cash flow hedges |  | (959) | 683
Gains/(Losses) reclassified from AOCI into net income – included in effectiveness assessment, cash flow hedges |  | (123) | (481)
Cash flow hedges | Foreign exchange contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains/(Losses) recognized in OCI – included in effectiveness assessment, cash flow hedges |  | (959) | 682
Gains/(Losses) reclassified from AOCI into net income – included in effectiveness assessment, cash flow hedges |  | (116) | (482)
Cash flow hedges | Interest rate contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains/(Losses) recognized in OCI – included in effectiveness assessment, cash flow hedges |  | 0 | 1
Gains/(Losses) reclassified from AOCI into net income – included in effectiveness assessment, cash flow hedges |  | $ (7) | $ 1

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- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying 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 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624177-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + Details
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- Definition Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121577181&loc=SL110061190-113977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580 + Details
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- Definition Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + Details
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- Definition Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121558989&loc=d3e80720-113993 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580 + Details
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