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Other Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Millions | Mar. 31, 2026 | Dec. 31, 2025
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Prepaid services | $ 131 | $ 169
Down payments and prepayments related to manufacturing and materials | 55 | 61
Interest receivable | 39 | 42
Prepaid income tax and income tax receivable | 35 | 41
Value added tax receivable | 29 | 37
Research and development funding receivable (Note 5) | 7 | 0
Collaboration receivable | 1 | 13
Other current assets | 51 | 45
Prepaid expenses and other current assets | $ 348 | $ 408

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