Investments - Investments of Consolidated Funds (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($) collateralized_Loan_obligation	Dec. 31, 2023 USD ($)
Schedule of Investments [Line Items]
Investments measured at net asset value		$ 7,962.9
Number of new collateralized loan obligations | collateralized_Loan_obligation	4
Minimum percent of aggregate assets for individual investments with fair value	5.00%
Consolidated VIEs | Equity securities
Schedule of Investments [Line Items]
Investments measured at net asset value	$ 361.5	$ 322.0