Restricted Cash, Other Assets and Other Liabilities - Schedule of Accrued and Other Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred investment management fees	$ 10,250	$ 6,265
Common and preferred stock dividends payable	16,477	16,491	$ 15,759
Securities sold short—consolidated funds	38,481	40,928
Due to custodians—consolidated funds	9,415	35,457
Current and deferred income tax liability	8,403	42
Warrants issued to Wafra (Note 9)	39,200	17,700
Accrued compensation	63,761	46,303
Accrued incentive fee and carried interest compensation	356,316	171,086
Accounts payable and accrued expenses	13,844	25,175
Other liabilities	681,451	546,923
Deferred investment management fees recognized	$ 3,300	$ 3,400
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Fee income, weighted-average recognition period (in years)		2 years 10 months 24 days
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Fee income, weighted-average recognition period (in years)	3 years
Related Party
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Other liabilities	$ 10,664	$ 12,451
Nonrelated Party
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Other liabilities	16,974	5,152
Corporate Offices
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Operating lease liability on corporate offices	$ 49,035	$ 40,497
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities
InfraBridge contingent consideration
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contingent consideration payable	$ 11,338	$ 0
Warrants issued to Wafra
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contingent consideration payable	35,000	125,000
Corporate Debt
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Interest payable	$ 2,293	$ 4,376