v3.25.2
Revenues - Summary of Revenues by Collaboration, Category of Revenue and Method of Recognition (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
License And Collaboration Agreements [Line Items]        
Total revenues $ 160 $ 39 $ 188 $ 184
Total revenues from collaborations 152 28 172 163
Total revenues from a customer 8 11 16 21
License and R&D services | Gilead collaboration | Over time        
License And Collaboration Agreements [Line Items]        
Total revenues 154 27 177 160
Access rights | Gilead collaboration | Over time        
License And Collaboration Agreements [Line Items]        
Total revenues 6 9 11 17
Other | Taiho collaboration | Over time        
License And Collaboration Agreements [Line Items]        
Total revenues $ 0 $ 3 $ 0 $ 7