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Income Taxes - Additional Information (Details) $ in Millions |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Aug. 30, 2016 Subsidiary | Sep. 28, 2024 USD ($) | Sep. 27, 2025 USD ($) | Sep. 28, 2024 USD ($) | Sep. 30, 2023 USD ($) | Sep. 24, 2022 USD ($)
Income Tax Contingency [Line Items] |  |  |  |  |  |
One-time income tax charge, net, State Aid Decision, portion payable to Ireland |  |  | $ 8,891 | $ 25,483 | $ 8,750 |
One-time income tax charge, net, State Aid Decision, U.S. foreign tax credit |  |  | (11,487) | (5,571) | (9,445) |
Decrease in unrecognized tax benefits, State Aid Decision |  |  | 2,939 | 1,070 | 19 |
Foreign pre-tax earnings |  |  | $ 82,000 | $ 77,300 | $ 72,900 |
U.S. statutory federal income tax rate |  |  | 21.00% | 21.00% | 21.00% |
Foreign tax credit carryforwards |  |  | $ 4,700 |  |  |
Research and development tax credit carryforwards |  |  | 4,000 |  |  |
Gross unrecognized tax benefits |  | $ 22,038 | 23,242 | $ 22,038 | $ 19,454 | $ 16,758
Gross unrecognized tax benefits that would impact effective tax rate, if recognized |  | 10,800 | 10,600 | $ 10,800 |  |
Reasonably possible decrease in gross unrecognized tax benefits over next 12 months |  |  | $ 6,000 |  |  |
Unfavorable investigation outcome, EU State Aid rules |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Number of subsidiaries impacted by the European Commission tax ruling | Subsidiary | 2 |  |  |  |  |
One-time income tax charge, net, State Aid Decision |  | 10,200 |  |  |  |
One-time income tax charge, net, State Aid Decision, portion payable to Ireland |  | 15,800 |  |  |  |
One-time income tax charge, net, State Aid Decision, U.S. foreign tax credit |  | 4,800 |  |  |  |
Decrease in unrecognized tax benefits, State Aid Decision |  | $ 823 |  |  |  |

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