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Investments - Realized and Unrealized Gains (Losses) Earned from Investments of Consolidated Funds (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Investments [Abstract]    
Realized gains $ 2.7 $ 4.7
Net change in unrealized gains (losses) (46.1) 84.6
Total $ (43.4) $ 89.3