Investments - Schedule of Net Investment Gains (Losses) 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] | ||||
| Gains (losses) from investments of Consolidated Funds | $ 146.6 | $ 4.6 | $ (102.0) | $ 11.6 |
| Gains (losses) from liabilities of consolidated CLOs | (120.4) | 42.2 | 63.8 | 41.3 |
| Total | $ 26.2 | $ 46.8 | $ (38.2) | $ 52.9 |