Fair Value Measurements (Schedule Of Available For Sale Securities) (Details) - USD ($) $ in Millions |
Sep. 28, 2024 |
Sep. 30, 2023 |
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| U.S. treasury and agency | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain (Loss), before Tax | $ (1) | $ (5) |
| Debt Securities, Available-for-sale | 85 | 74 |
| Debt Securities, Available-for-Sale, Amortized Cost, Total | 86 | 79 |
| Corporate and asset-backed | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain (Loss), before Tax | 0 | (1) |
| Debt Securities, Available-for-sale | 28 | 30 |
| Debt Securities, Available-for-Sale, Amortized Cost, Total | $ 28 | $ 31 |
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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, before tax, of unrealized gain (loss) in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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