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Investments - Interest and Other Income of Consolidated Funds (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Investments [Abstract]        
Interest income from investments $ 135.2 $ 72.5 $ 367.1 $ 188.2
Other income 17.5 7.2 44.6 16.4
Total $ 152.7 $ 79.7 $ 411.7 $ 204.6