v3.26.1
FAIR VALUE - Schedule of Changes in Fair Value of Level III Investments (Details) - Consolidated Funds - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ 4,395,740 $ 4,062,983
Transfers into Level III 50,129 144,161
Transfers out of Level III (120,511) (100,642)
Purchases 608,426 1,021,555
Sales (284,472) (1,189,209)
Realized gain (losses), net (12,733) 45,336
Unrealized appreciation (depreciation), net 23,812 (42,429)
Ending balance 4,660,391 3,941,755
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period $ 66,441 $ (42,291)
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
Corporate Debt – Bank Debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ 1,626,609 $ 1,936,315
Transfers into Level III 42,205 136,694
Transfers out of Level III (54,887) (93,836)
Purchases 335,035 776,462
Sales (209,098) (1,044,105)
Realized gain (losses), net (27,697) 10,954
Unrealized appreciation (depreciation), net (67,418) (43,814)
Ending balance 1,644,749 1,678,670
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period (85,179) (43,676)
Corporate Debt – All Other    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 80,128 111,552
Transfers into Level III 2,467 624
Transfers out of Level III 0 0
Purchases 89,199 11,768
Sales (29) (7,617)
Realized gain (losses), net (15) 7,585
Unrealized appreciation (depreciation), net (5,818) (6,325)
Ending balance 165,932 117,587
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period (3,742) (6,325)
Equities – Common Stock    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 1,559,531 1,187,023
Transfers into Level III 628 0
Transfers out of Level III (129) (6,806)
Purchases 167,054 28,361
Sales (32,365) (50,403)
Realized gain (losses), net 13,644 19,861
Unrealized appreciation (depreciation), net 103,273 (6,580)
Ending balance 1,811,636 1,171,456
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period 113,686 3,582
Equities – Preferred Stock    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 776,932 606,141
Transfers into Level III 4,829 37
Transfers out of Level III 0 0
Purchases 6,661 133,007
Sales (31,697) (81,903)
Realized gain (losses), net 24 6,344
Unrealized appreciation (depreciation), net 8,390 (1,907)
Ending balance 765,139 661,719
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period 55,452 (1,907)
Real Estate    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 352,540 206,181
Transfers into Level III 0 6,806
Transfers out of Level III (65,495) 0
Purchases 10,477 70,382
Sales (11,283) (5,181)
Realized gain (losses), net 1,311 592
Unrealized appreciation (depreciation), net (14,615) 16,197
Ending balance 272,935 294,977
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period (13,776) 6,035
Swaps    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 0 15,771
Transfers into Level III 0 0
Transfers out of Level III 0 0
Purchases 0 1,575
Sales 0 0
Realized gain (losses), net 0 0
Unrealized appreciation (depreciation), net 0 0
Ending balance 0 17,346
Net change in unrealized appreciation (depreciation) attributable to assets still held at end of period $ 0 $ 0