Investments - Interest and Other Income of Consolidated Funds (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Investments [Abstract]
Interest income from investments	$ 512.4	$ 282.3	$ 231.3
Other income	57.7	28.7	21.9
Total	$ 570.1	$ 311.0	$ 253.2