Liabilities Related to the Sales of Future Royalties - Narrative (Details) - USD ($) $ in Millions				3 Months Ended			6 Months Ended		30 Months Ended	36 Months Ended
	Jan. 01, 2029	Nov. 03, 2023	Jul. 01, 2023	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2023	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025	Dec. 31, 2028
Alexion \| Royalties \| Option and License Agreement
Sales of Future Royalties [Line Items]
Proceeds from upfront payment		$ 192.5
Contract with customer, percent of receivable rights									100.00%
Royalty liability, maximum annual receivable for specific sales						$ 18.0
Revenue recognized				$ 37.3	$ 16.8		$ 38.8	$ 32.3
Collaboration agreement, effective rate				19.00%			19.00%
Alexion \| Royalties \| Option and License Agreement \| Forecast
Sales of Future Royalties [Line Items]
Expected royalty interest payments	$ 12.0									$ 35.0
MorphoSys \| Royalties \| Collaboration and License Agreement
Sales of Future Royalties [Line Items]
Proceeds from upfront payment		$ 22.5
Expected royalty interest payments			$ 29.3
Royalties received				$ 29.3
Revenue recognized				$ 3.9			$ 6.8
Interest rate				18.50%			18.50%
MorphoSys \| Non-Cash Royalty \| Collaboration and License Agreement
Sales of Future Royalties [Line Items]
Revenue recognized				$ 3.1	$ 1.8			$ 4.5
MorphoSys \| Royalty Payable to Company \| Collaboration and License Agreement
Sales of Future Royalties [Line Items]
Revenue recognized				$ 0.8