Commitments and Contingencies, Contingencies (Details) - USD ($) $ in Millions |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
|
| Various Circumstances Involving Uncertainty [Member] | ||
| Contingencies [Abstract] | ||
| Provision recognized for possible losses | $ 2.5 | $ 2.7 |
| Potential Prospectus Errors for Closed-end Funds [Member] | ||
| Contingencies [Abstract] | ||
| Provision recognized for possible losses | $ 2.2 | $ 2.9 |