Sales of Future Royalties - Narrative (Details) - Royalties - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Jun. 30, 2024
Alexion | Option and License agreement
Sales of Future Royalties [Line Items]
Collaboration agreement, effective rate	21.10%	21.10%
Non-cash revenue recognized	$ 15.7	$ 42.1
Deferred revenue	8.2	25.3
MorphoSys/Incyte | Collaboration and License Agreement
Sales of Future Royalties [Line Items]
Non-cash revenue recognized	2.1	6.5
Interest rate			17.50%
Non-cash interest expense recognized	$ 0.8	$ 2.7