Accrued Compensation and Benefits - Schedule of Performance Allocations and Incentive Fee Related Compensation (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Retirement Benefits [Abstract] | ||||
| Realized | $ 203.3 | $ 62.9 | $ 492.2 | $ 505.2 |
| Unrealized | (537.8) | (387.5) | (1,101.0) | (214.8) |
| Total | $ (334.5) | $ (324.6) | $ (608.8) | $ 290.4 |