Variable Interest Entities - Schedule of Supplemental Balance Sheet Disclosures (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 345,335	$ 855,564	$ 1,226,897	$ 703,544
Investments (Note 4)	2,476,093	1,237,363
Other assets	78,953	80,821
Total assets of consolidated private fund	3,562,550	11,028,503
Debt	371,783	569,375
Due to custodian	9,415	35,457
Other liabilities	681,451	546,923
Marketable equity securities
Variable Interest Entity [Line Items]
Securities sold short	66,297	139,076
Variable Interest Entity, Primary Beneficiary | Corporate and Other
Variable Interest Entity [Line Items]
Cash and cash equivalents	69,654	86,433
Investments (Note 4)	482,911	185,845
Other assets	576	1,895
Total assets of consolidated private fund	553,141	274,173
Debt	0	465
Due to custodian	9,415	35,457
Other	16,313	2,734
Other liabilities	64,210	79,584
Variable Interest Entity, Primary Beneficiary | Corporate and Other | Marketable equity securities | Short
Variable Interest Entity [Line Items]
Securities sold short	$ 38,482	$ 40,928