Basis of Presentation and Significant Accounting Policies - Purchase of Rights to Future Milestones, Royalties, and Commercial Payments (Details) - USD ($) $ in Millions |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Basis of Presentation and Significant Accounting Policies | ||
| Purchased receivables included in royalty and commercial payment receivables, Effective interest rate method | $ 23.0 | $ 27.2 |
| Purchased receivables included in royalty and commercial payment receivables, Cost recovery method | $ 2.8 | $ 2.6 |