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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
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