v3.26.1
FAIR VALUE - Schedule of Changes in Fair Value of Level III Investments (Details) - Consolidated VIEs - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Beginning balance $ 4,660,391 $ 3,941,755 $ 4,395,740 $ 4,062,983
Transfers into Level III 514,930 804,200 565,059 948,361
Transfers out of Level III (449,945) (755,170) (570,456) (855,812)
Purchases 331,821 272,092 940,247 1,293,647
Sales (356,553) (351,900) (641,025) (1,541,109)
Realized gain (losses), net 44,899 (21,230) 32,166 24,106
Unrealized appreciation (depreciation), net 36,706 113,279 60,518 70,850
Ending balance 4,782,249 4,003,026 4,782,249 4,003,026
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period $ (7,597) $ 95,745 $ 58,844 $ 53,454
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net change in unrealized appreciation (depreciation) on consolidated funds’ investments Net change in unrealized appreciation (depreciation) on consolidated funds’ investments Net change in unrealized appreciation (depreciation) on consolidated funds’ investments Net change in unrealized appreciation (depreciation) on consolidated funds’ investments
Corporate debt – bank debt        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Beginning balance $ 1,644,749 $ 1,678,670 $ 1,626,609 $ 1,936,315
Transfers into Level III 515,449 791,061 557,654 927,755
Transfers out of Level III (476,909) (742,114) (531,796) (835,950)
Purchases 219,377 156,339 554,412 932,801
Sales (232,349) (305,167) (441,447) (1,349,272)
Realized gain (losses), net 3,295 7,068 (24,402) 18,022
Unrealized appreciation (depreciation), net (5,176) (39,686) (72,594) (83,500)
Ending balance 1,668,436 1,546,171 1,668,436 1,546,171
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period 10,573 (79,245) (74,606) (122,921)
Corporate debt – all other        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Beginning balance 165,932 117,587 80,128 111,552
Transfers into Level III (684) 4,033 1,783 4,657
Transfers out of Level III (37,157) (4,839) (37,157) (4,839)
Purchases 1,508 (3,947) 90,707 7,821
Sales (3,984) (1,177) (4,013) (8,794)
Realized gain (losses), net (3,180) (81) (3,195) 7,504
Unrealized appreciation (depreciation), net 1,535 20,593 (4,283) 14,268
Ending balance 123,970 132,169 123,970 132,169
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period (561) 17,617 (4,303) 11,292
Equities – common stock        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Beginning balance 1,811,636 1,171,456 1,559,531 1,187,023
Transfers into Level III 156 9,106 784 9,106
Transfers out of Level III (1,374) (8,217) (1,503) (15,023)
Purchases 39,430 72,095 206,484 100,456
Sales (124,263) (25,562) (156,628) (75,965)
Realized gain (losses), net 43,314 14,876 56,958 34,737
Unrealized appreciation (depreciation), net 41,900 42,904 145,173 36,324
Ending balance 1,810,799 1,276,658 1,810,799 1,276,658
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period 31,081 52,792 144,767 56,374
Equities – Preferred Stock        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Beginning balance 765,139 661,719 776,932 606,141
Transfers into Level III 9 0 4,838 37
Transfers out of Level III 0 0 0 0
Purchases 33,387 23,079 40,048 156,086
Sales (1,294) (5,646) (32,991) (87,549)
Realized gain (losses), net 1,292 (44,368) 1,316 (38,024)
Unrealized appreciation (depreciation), net 11,758 65,475 20,148 63,568
Ending balance 810,291 700,259 810,291 700,259
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period (34,877) 70,426 20,575 68,519
Real estate        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Beginning balance 272,935 294,977 352,540 206,181
Transfers into Level III 0 0 0 6,806
Transfers out of Level III 65,495 0 0 0
Purchases 38,119 24,526 48,596 94,908
Sales 5,337 (14,348) (5,946) (19,529)
Realized gain (losses), net 178 1,275 1,489 1,867
Unrealized appreciation (depreciation), net (13,311) 23,993 (27,926) 40,190
Ending balance 368,753 330,423 368,753 330,423
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period (13,813) 34,155 (27,589) 40,190
Swaps        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Beginning balance 0 17,346 0 15,771
Transfers into Level III 0 0 0 0
Transfers out of Level III 0 0 0 0
Purchases 0 0 0 1,575
Sales 0 0 0 0
Realized gain (losses), net 0 0 0 0
Unrealized appreciation (depreciation), net 0 0 0 0
Ending balance 0 17,346 0 17,346
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period $ 0 $ 0 $ 0 $ 0