v3.24.1.u1
Investments in Variable Interest Entities (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Variable Interest Entity [Line Items]    
Investment in biotechnology companies that are determined to be unconsolidated variable interest entities $ 23.8 $ 16.4
Neurimmune    
Variable Interest Entity [Line Items]    
Research and development costs, percentage 100.00%  
Deconsolidation, gain (loss), amount $ 3.0