Investments - Schedule of Investments as a Percentage of Investments of Consolidated Funds - Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Schedule of Investments [Line Items]
Cost of investments of Consolidated Funds	$ 7,371.5	$ 6,705.3
United States | Equity securities
Schedule of Investments [Line Items]
Cost of total assets	436.0	0.0
Equity securities	$ 427.3	$ 0.0
Percentage of equity securities	6.20%	0.00%
United States | Partnership and LLC interests
Schedule of Investments [Line Items]
Cost of total assets	$ 504.2	$ 120.8
United States | Loans
Schedule of Investments [Line Items]
Cost of total assets	26.4	157.1
United States | Total assets of the CLOs
Schedule of Investments [Line Items]
Cost of total assets	2,974.2	2,697.9
Europe | Total assets of the CLOs
Schedule of Investments [Line Items]
Cost of total assets	3,334.0	3,649.0
Global | Total assets of the CLOs
Schedule of Investments [Line Items]
Cost of total assets	$ 96.7	$ 80.5