v3.26.1
Summary of Impact of Derivative Financial Instruments to Consolidated Statements of Operations (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative [Line Items]        
Unrealized Gain (Loss) on Derivatives and Commodity Contracts $ (10,575) $ (105,734) $ (12,269) $ (177,095)
Freestanding Derivatives        
Derivative [Line Items]        
Realized Losses 5,793 19,479 (7,662) 8,363
Net Change in Unrealized Gains (Losses) (16,368) (125,213) (4,607) (185,458)
Freestanding Derivatives | Total Return Swaps        
Derivative [Line Items]        
Realized Losses 774 7,698 1,954 8,474
Net Change in Unrealized Gains (Losses) 1,685 (4,270) 3,536 (542)
Freestanding Derivatives | Credit Default Swap        
Derivative [Line Items]        
Realized Losses 1 5 1 5
Net Change in Unrealized Gains (Losses) (2) (11) (2) (17)
Freestanding Derivatives | Interest Rate Contracts        
Derivative [Line Items]        
Net Change in Unrealized Gains (Losses) (5,106) (45,360) 8,295 (37,974)
Freestanding Derivatives | Foreign Currency Contracts        
Derivative [Line Items]        
Realized Losses 5,018 11,776 (9,617) (116)
Net Change in Unrealized Gains (Losses) (10,139) (23,103) 11,478 (6,376)
Freestanding Derivatives | Equity Options        
Derivative [Line Items]        
Net Change in Unrealized Gains (Losses) $ (2,806) $ (52,469) $ (27,914) $ (140,549)