Investments - Schedule of Investments (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Investments [Abstract]
Accrued performance allocations	$ 7,117.7	$ 8,133.0
Principal equity method investments, excluding performance allocations	2,922.0	2,128.6
Principal investments in CLOs	526.1	361.1
Other investments	202.1	209.3
Total investments	$ 10,767.9	$ 10,832.0