Investments - Schedule of Realized and Unrealized Gains (Losses) Earned from Investments of Consolidated Funds (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Investments [Abstract] | ||||
| Net realized gains (losses) | $ (42.0) | $ (24.5) | $ (41.6) | $ (24.9) |
| Net change in unrealized gains (losses) | 188.6 | 29.1 | (60.4) | 36.5 |
| Total | $ 146.6 | $ 4.6 | $ (102.0) | $ 11.6 |