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Other Balance Sheet Components - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Prepaid services | $ 184 | $ 182
Down payments and prepayments related to manufacturing and materials | 111 | 168
Income tax receivable | 105 | 19
Collaboration receivable | 73 | 61
Interest receivable | 56 | 59
Value added tax receivable | 26 | 50
Prepaid income tax | 25 | 0
Other current assets | 31 | 88
Prepaid expenses and other current assets | $ 611 | $ 627

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