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Long-Term Debt - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 18, 2025
Dec. 31, 2025
Dec. 31, 2024
Jun. 30, 2025
Mar. 31, 2025
Debt Instrument [Line Items]          
Long-term debt   $ 99 $ 48    
Interest expense, debt   $ 9 2    
Debt instrument, interest rate, effective percentage   12.85%   13.08% 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, term, extension period 12 months        
Debt instrument, term charge, percentage 9.00%   9.00%    
Debt instrument, face amount, contingently available     $ 100    
Debt instrument, periodic payment, principal, term     25 months    
Debt instrument, interest rate, stated percentage     10.45%    
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]     Prime Rate [Member]    
Debt instrument, basis spread on variable rate     1.95%    
Debt instrument, payment in kind     2.00%    
Debt instrument, payment in kind, principal     110.00%    
Debt instrument, cash balance requirement, minimum, percentage     50.00%    
Long-term debt     $ 200    
Hercules Agreement | Secured Debt | Tranche One          
Debt Instrument [Line Items]          
Debt Instrument, additional committed amount     25    
Debt instrument, face amount, contingently available     $ 50    
Debt Instrument, post milestone draw window period     90 days    
Hercules Agreement | Secured Debt | Tranche Two          
Debt Instrument [Line Items]          
Debt Instrument, additional committed amount     $ 25    
Debt instrument, face amount, contingently available     $ 50    
Debt Instrument, post milestone draw window period     90 days    
Hercules Agreement | Secured Debt | Prior to First Anniversary of the Funding Date          
Debt Instrument [Line Items]          
Debt instrument, repayment, percentage     3.00%    
Hercules Agreement | Secured Debt | Between the First and Second Anniversary of the Funding Date          
Debt Instrument [Line Items]          
Debt instrument, repayment, percentage     2.00%    
Hercules Agreement | Secured Debt | Thereafter of the Funding Date          
Debt Instrument [Line Items]          
Debt instrument, repayment, percentage     1.00%