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Income Taxes - Additional Information (Details) $ in Millions, € in Billions | Aug. 30, 2016 EUR (€) Subsidiary | Jul. 01, 2017 USD ($) | Sep. 24, 2016 USD ($)
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Income Tax Disclosure [Abstract] |  |  |
Gross unrecognized tax benefits |  | $ 8,600 | $ 7,700
Gross unrecognized tax benefits that would affect effective tax rate, if recognized |  | 2,600 | 2,800
Unrecognized tax benefits, gross interest and penalties accrued |  | 1,300 | $ 1,000
Reasonably possible decrease in gross unrecognized tax benefits over next 12 months |  | $ 700 |
Unfavorable investigation outcome, EU State Aid rules |  |  |
Income Tax Contingency [Line Items] |  |  |
Number of subsidiaries impacted by European Commission tax ruling | Subsidiary | 2 |  |
Maximum potential loss related to European Commission tax ruling | € | € 13 |  |

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