v3.26.1
Summary of Impact of Derivative Financial Instruments to Consolidated Statements of Operations (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Derivative [Line Items]    
Unrealized Gain (Loss) on Derivatives and Commodity Contracts $ (1,694) $ (71,361)
Freestanding Derivatives    
Derivative [Line Items]    
Realized Losses (13,455) (11,116)
Net Change in Unrealized Gains (Losses) 11,761 (60,245)
Freestanding Derivatives | Total Return Swaps    
Derivative [Line Items]    
Realized Losses 1,180 776
Net Change in Unrealized Gains (Losses) 1,851 3,728
Freestanding Derivatives | Credit Default Swap    
Derivative [Line Items]    
Net Change in Unrealized Gains (Losses) 0 (6)
Freestanding Derivatives | Interest Rate Contracts    
Derivative [Line Items]    
Net Change in Unrealized Gains (Losses) 13,401 7,386
Freestanding Derivatives | Foreign Currency Contracts    
Derivative [Line Items]    
Realized Losses (14,635) (11,892)
Net Change in Unrealized Gains (Losses) 21,617 16,727
Freestanding Derivatives | Equity Options    
Derivative [Line Items]    
Net Change in Unrealized Gains (Losses) $ (25,108) $ (88,080)