v3.26.1
Acquisitions of IPR&D - Additional Information (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2023
Dec. 31, 2025
Dec. 12, 2024
Mar. 29, 2023
Seven and Eight Collaboration Agreement and SW License and Development Agreement            
Business Combination [Line Items]            
Simple agreements for future equity issued, amount           $ 35,000,000
Upfront payments recognized as in-process research and development expenses     $ 46,000,000      
Future milestones accrued $ 0     $ 0    
Upfront fee paid in cash           11,000,000
Seven and Eight Collaboration Agreement and SW License and Development Agreement | Seven and Eight            
Business Combination [Line Items]            
Simple agreements for future equity issued, amount           31,500,000
Additional milestone payable upon achievement of certain development and regulatory milestones           369,600,000
Additional milestone payable upon the achievement of certain development and regulatory milestones for a compound that is not a conjugate           219,600,000
Additional milestone payable upon the achievement of certain development and regulatory milestones for a compound that is a conjugate           150,000,000
Upfront fee paid in cash           10,500,000
Seven and Eight Collaboration Agreement and SW License and Development Agreement | SW            
Business Combination [Line Items]            
Simple agreements for future equity issued, amount           3,500,000
Upfront fee paid in cash           500,000
Seven and Eight Collaboration Agreement and SW License and Development Agreement | SW | Maximum            
Business Combination [Line Items]            
Additional milestone payable upon the achievement of certain regulatory milestones           29,400,000
Additional milestone payable upon the achievement of certain commercial milestones           $ 350,000,000
Impact Agreement            
Business Combination [Line Items]            
Upfront payments recognized as in-process research and development expenses     $ 31,500,000      
Future milestones accrued 0     $ 0    
Upfront fee paid in cash         $ 31,500,000  
Maximum amount payable upon the achievement of certain commercial milestones         775,000,000  
Development and regulatory milestones, paid $ 5,000,000 $ 0        
Impact Agreement | Maximum            
Business Combination [Line Items]            
Maximum amount payable upon the achievement of certain development and regulatory milestones milestones         $ 181,000,000