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Sales of Future Royalties - Narrative (Details) - Royalties
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
USD ($)
Jun. 30, 2024
USD ($)
Alexion | Option and License agreement    
Sales of Future Royalties [Line Items]    
Non-cash revenue recognized $ 6.9 $ 16.3
Deferred revenue   140.6
MorphoSys | Collaboration and License Agreement    
Sales of Future Royalties [Line Items]    
Non-cash revenue recognized $ 1.6 $ 4.4
Interest rate 17.50% 17.50%
Non-cash interest expense recognized $ 0.8 $ 1.9