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Investments - Realized and Unrealized Gains (Losses) Earned from Investments of Consolidated Funds (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Investments [Abstract]        
Realized gains (losses) $ (21.5) $ (6.5) $ (38.9) $ (3.8)
Net change in unrealized gains (losses) 17.6 (198.2) 180.0 (244.3)
Total $ (3.9) $ (204.7) $ 141.1 $ (248.1)