Investments - Schedule of Unamortized Capitalized Fee Income (Details) - USD ($) $ in Millions |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total Unamortized Fee Income | $ 55.1 | $ 52.3 |
| Offset against debt investment cost | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total Unamortized Fee Income | 43.6 | 42.5 |
| Deferred obligation contingent on funding or other milestone | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total Unamortized Fee Income | $ 11.5 | $ 9.8 |