v3.26.1
Long-Term Debt - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2024
Dec. 31, 2025
Mar. 31, 2025
Debt Instrument [Line Items]              
Interest expense, debt $ 3 $ 1 $ 7 $ 3      
Debt instrument, interest rate, effective percentage   13.08%   13.08%   12.85% 13.39%
Hercules Agreement | Secured Debt              
Debt Instrument [Line Items]              
Debt instrument, face amount         $ 250    
Proceeds from issuance of secured debt         50    
Debt instrument, additional committed amount   $ 50   $ 50      
Debt instrument, face amount, contingently available         150    
Hercules Agreement | Secured Debt | Tranche One              
Debt Instrument [Line Items]              
Debt instrument, face amount, contingently available         $ 50    
Debt instrument, milestone achievement period         90 days    
Hercules Agreement | Secured Debt | Tranche Two              
Debt Instrument [Line Items]              
Debt instrument, additional committed amount         $ 50    
Debt instrument, face amount, contingently available         $ 50    
Debt instrument, milestone achievement period         90 days