INVESTMENTS - Schedule of Investments of the Consolidated Funds (Details) - Consolidated Funds  - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Investments
Total investments, at fair value	$ 14,214,980	$ 14,601,587
Fixed income investments:
Investments
Total investments, at fair value	$ 10,697,705	$ 11,718,445
Percentage of total investments	75.30%	80.30%
Fixed income investments: | Loans and securitization vehicles
Investments
Total investments, at fair value	$ 9,696,739	$ 10,616,458
Percentage of total investments	68.20%	72.70%
Fixed income investments: | Money market funds and U.S. treasury securities
Investments
Total investments, at fair value	$ 536,846	$ 523,038
Percentage of total investments	3.80%	3.60%
Fixed income investments: | Bonds
Investments
Total investments, at fair value	$ 464,120	$ 578,949
Percentage of total investments	3.30%	4.00%
Partnership interests
Investments
Total investments, at fair value	$ 1,895,160	$ 1,642,489
Percentage of total investments	13.30%	11.20%
Equity securities
Investments
Total investments, at fair value	$ 1,622,115	$ 1,240,653
Percentage of total investments	11.40%	8.50%