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Balance Sheet Components - Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 29, 2025 | Sep. 28, 2024
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 94,870 | $ 31,931
Accumulated Amortization | (13,557) | (17,672)
Foreign Currency Translation | (2) | 7
Total future amortization expense | $ 81,311 | $ 14,266
Weighted-Average Remaining Life (In years) | 6 years 2 months 15 days | 4 years 6 months 3 days
Indefinite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount |  | $ 105,701
Foreign Currency Translation |  | 7
Net Carrying Value |  | 88,036
In Process Research and Development |  |
Indefinite-Lived Intangible Assets [Line Items] |  |
In-process research and development not subject to amortization |  | 73,770
Trade name |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 451 | 451
Accumulated Amortization | (224) | (188)
Foreign Currency Translation | (2) | 7
Total future amortization expense | $ 225 | $ 270
Weighted-Average Remaining Life (In years) | 3 years | 3 years 6 months
Technology-based |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 94,419 | $ 31,480
Accumulated Amortization | (13,333) | (17,484)
Foreign Currency Translation | 0 | 0
Total future amortization expense | $ 81,086 | $ 13,996
Weighted-Average Remaining Life (In years) | 6 years 2 months 19 days | 4 years 6 months 7 days

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