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Balance Sheet Details and Other Financial Information - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Term of debt instrument (in months) |  |  |  |  | 12 months
Available-for-sale securities current | $ 1,410,000,000 |  | $ 1,410,000,000 |  | $ 1,730,000,000
Available-for-sale securities noncurrent | 76,300,000 |  | 76,300,000 |  | $ 247,700,000
Gross realized gains (loss) on sales of short-term debt securities | 0 | $ 0 | 0 | $ 0 |
Cost of sales |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Inventory write-down | $ 16,000,000.0 | $ 23,300,000 | $ 53,000,000.0 | $ 32,700,000 |
Minimum |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Term of debt instrument (in months) |  |  | 12 months |  |
Maximum |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Term of debt instrument (in months) |  |  | 18 months |  | 18 months

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