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Financial Instruments - Additional Information (Details) $ in Billions | 12 Months Ended
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Sep. 27, 2025 USD ($) Vendor Customer | Sep. 28, 2024 USD ($) Vendor
Debt Securities, Available-for-Sale, Maturity, Fair Value, Rolling Maturity [Abstract] |  |
Carrying amount of hedged term debt | $ | $ 12.6 | $ 13.5
Hedged liability, statement of financial position [Extensible Enumeration] | Term debt | Term debt
Trade receivables | Credit concentration risk |  |
Debt Securities, Available-for-Sale, Maturity, Fair Value, Rolling Maturity [Abstract] |  |
Number Of Customers With Significant Accounts Receivable Balance | Customer | 1 |
Trade receivables | Credit concentration risk | Customer One |  |
Debt Securities, Available-for-Sale, Maturity, Fair Value, Rolling Maturity [Abstract] |  |
Concentration risk, percentage | 12.00% |
Trade receivables | Credit concentration risk | Cellular network carriers |  |
Debt Securities, Available-for-Sale, Maturity, Fair Value, Rolling Maturity [Abstract] |  |
Concentration risk, percentage | 34.00% | 38.00%
Non-trade receivables | Credit concentration risk |  |
Debt Securities, Available-for-Sale, Maturity, Fair Value, Rolling Maturity [Abstract] |  |
Number of vendors that individually represented 10% or more of total vendor non-trade receivables | Vendor | 2 | 2
Non-trade receivables | Credit concentration risk | Vendor one |  |
Debt Securities, Available-for-Sale, Maturity, Fair Value, Rolling Maturity [Abstract] |  |
Concentration risk, percentage | 46.00% | 44.00%
Non-trade receivables | Credit concentration risk | Vendor two |  |
Debt Securities, Available-for-Sale, Maturity, Fair Value, Rolling Maturity [Abstract] |  |
Concentration risk, percentage | 23.00% | 23.00%
Hedges of foreign currency exposure associated with revenue and inventory purchases |  |
Debt Securities, Available-for-Sale, Maturity, Fair Value, Rolling Maturity [Abstract] |  |
Maximum length of time over which the Company is hedging its exposure to the variability in future cash flows for foreign currency transactions | 12 months |
Hedges of foreign currency exposure associated with term debt |  |
Debt Securities, Available-for-Sale, Maturity, Fair Value, Rolling Maturity [Abstract] |  |
Maximum length of time over which the Company is hedging its exposure to the variability in future cash flows for foreign currency transactions | 17 years |
Marketable debt securities other than mortgage- and asset-backed securities |  |
Debt Securities, Available-for-Sale, Maturity, Fair Value, Rolling Maturity [Abstract] |  |
Between 1 and 5 years | 80.00% |
Between 5 and 10 years | 15.00% |
Greater than 10 years | 5.00% |
Mortgage- and asset-backed securities |  |
Debt Securities, Available-for-Sale, Maturity, Fair Value, Rolling Maturity [Abstract] |  |
Between 1 and 5 years | 13.00% |
Between 5 and 10 years | 14.00% |
Greater than 10 years | 73.00% |

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- Definition Allocated percentage of investment in debt security, with single maturity date and allocated without single maturity date, maturing in next rolling sixth through tenth year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
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- Definition Allocated percentage of investment in debt security, with single maturity date and allocated without single maturity date, maturing in next rolling fiscal year through fifth year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
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- Definition Allocated percentage of investment in debt security, with single maturity date and allocated without single maturity date, maturing after rolling tenth year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
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