v3.26.1
FAIR VALUE - Schedule of Changes in Fair Value of Level III Investments (Details) - Consolidated Funds - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ 4,062,983 $ 3,603,942
Deconsolidation of funds 0 (70,234)
Transfers into Level III 1,247,147 764,645
Transfers out of Level III (1,123,678) (544,179)
Purchases 2,356,502 1,333,090
Sales (2,201,394) (1,059,757)
Realized gain (losses), net 23,103 19,523
Unrealized appreciation (depreciation), net 31,077 15,953
Ending balance 4,395,740 4,062,983
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period $ 45,023 $ 50,875
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net change in unrealized (depreciation) appreciation on consolidated funds’ investments Net change in unrealized (depreciation) appreciation on consolidated funds’ investments
Corporate Debt – Bank Debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ 1,936,315 $ 1,721,888
Deconsolidation of funds 0 (67,293)
Transfers into Level III 1,151,973 560,765
Transfers out of Level III (1,014,056) (337,454)
Purchases 1,558,833 770,814
Sales (1,850,082) (649,253)
Realized gain (losses), net 26,418 8,926
Unrealized appreciation (depreciation), net (182,792) (72,078)
Ending balance 1,626,609 1,936,315
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period (170,832) (16,125)
Corporate Debt – All Other    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 111,552 260,292
Deconsolidation of funds 0 (10)
Transfers into Level III 46,298 41,610
Transfers out of Level III (41,190) (150,382)
Purchases 53,330 60,292
Sales (94,218) (79,377)
Realized gain (losses), net 7,162 1,482
Unrealized appreciation (depreciation), net (2,806) (22,355)
Ending balance 80,128 111,552
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period (2,806) (18,379)
Equities – Common Stock    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 1,187,023 846,773
Deconsolidation of funds 0 (575)
Transfers into Level III 20,000 138,379
Transfers out of Level III (46,400) (27,724)
Purchases 398,625 314,181
Sales (91,876) (176,382)
Realized gain (losses), net 23,846 66,323
Unrealized appreciation (depreciation), net 68,313 26,048
Ending balance 1,559,531 1,187,023
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period 83,279 5,993
Equities – Preferred Stock    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 606,141 599,636
Deconsolidation of funds 0 (2,356)
Transfers into Level III 37 153
Transfers out of Level III 0 0
Purchases 218,179 129,829
Sales (116,418) (154,745)
Realized gain (losses), net (39,751) (57,208)
Unrealized appreciation (depreciation), net 108,744 90,832
Ending balance 776,932 606,141
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period 108,744 85,880
Real Estate    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 206,181 175,353
Deconsolidation of funds 0 0
Transfers into Level III 28,839 23,738
Transfers out of Level III (22,032) (28,619)
Purchases 125,959 42,203
Sales (31,220) 0
Realized gain (losses), net 5,195 0
Unrealized appreciation (depreciation), net 39,618 (6,494)
Ending balance 352,540 206,181
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period 26,638 (6,494)
Swaps    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 15,771 0
Deconsolidation of funds 0  
Transfers into Level III 0 0
Transfers out of Level III 0 0
Purchases 1,576 15,771
Sales (17,580) 0
Realized gain (losses), net 233 0
Unrealized appreciation (depreciation), net 0 0
Ending balance 0 15,771
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period $ 0 $ 0