Quarterly report pursuant to Section 13 or 15(d)

Equity Incentive Plans - Schedule of Stock-based Compensation Expense (Details)

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Equity Incentive Plans - Schedule of Stock-based Compensation Expense (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total $ 35 $ 41 $ 109 $ 123
Research and development        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total 30 36 93 107
Selling, general, and administrative        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total $ 5 $ 5 $ 16 $ 16