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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, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Investments [Abstract]        
Realized losses $ (24.5) $ (23.4) $ (24.9) $ (44.6)
Net change in unrealized gains 29.1 23.6 36.5 127.5
Total $ 4.6 $ 0.2 $ 11.6 $ 82.9