v3.26.1
Collaboration Agreements and Research and Development Funding Arrangement (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Mar. 16, 2026
Mar. 31, 2024
Oct. 31, 2022
Research and Development Arrangement, Contract to Perform for Others [Line Items]              
Research and development $ 651.0 $ 700.0 $ 1,300.0 $ 1,556.0      
Upfront payment     195.0 68.0      
Merck | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement              
Research and Development Arrangement, Contract to Perform for Others [Line Items]              
Cash proceeds             $ 250.0
Research and development 97.0 99.0 198.0 203.0      
Recovery of costs 1.0 6.0 2.0 18.0      
Recordati S.p.A | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement              
Research and Development Arrangement, Contract to Perform for Others [Line Items]              
Upfront payment 50.0            
Milestone payment         $ 110.0    
Blackstone Life Sciences (Blackstone) | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement              
Research and Development Arrangement, Contract to Perform for Others [Line Items]              
Research and development $ 24.0 $ 160.0 $ 74.0 $ 250.0      
Milestone payment           $ 750.0  
Funding amount           $ 750.0