Investments - Schedule of Net Investment Gains (Losses) of Consolidated Funds (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Investments [Abstract] | ||||
| Gains (losses) from investments of Consolidated Funds | $ (54.3) | $ 88.5 | $ (156.3) | $ 100.1 |
| Gains from liabilities of consolidated CLOs | 31.6 | 34.7 | 95.4 | 76.0 |
| Total | $ (22.7) | $ 123.2 | $ (60.9) | $ 176.1 |