v3.25.4
DERIVATIVE INSTRUMENTS - Schedule of Gain (Loss) Recognized in Consolidated Statements of Operations Related to Principal Derivative Instruments (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives $ 657,122 $ (111,690) $ (80,705)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net realized and unrealized gains (losses) on investments Net realized and unrealized gains (losses) on investments Net realized and unrealized gains (losses) on investments
Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives $ 661,507 $ (117,884) $ (80,910)
Not Designated as Hedging Instrument | Net realized and unrealized gains (losses) on investments      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives 638,534 (57,279) (68,272)
Not Designated as Hedging Instrument | Net Foreign Exchange Gains (Losses)      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives 22,973 (60,605) (12,638)
Fixed Maturity Investment-Related Derivatives | Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives 84,143 (136,157) (67,047)
Interest rate futures | Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives 67,183 (81,400) 3,877
Credit default swaps | Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives 17,031 (54,757) (70,924)
Interest rate swaps | Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives (71) 0 0
Equity Investments | Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives 138,896 2,333 (1,928)
Equity futures | Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives 138,896 3,379 (1,928)
Warrants | Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives 0 (1,046) 0
Commodity | Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives 415,495 76,545 703
Commodity futures | Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives 418,097 81,062 5,256
Commodity options | Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives (2,602) (4,517) (4,553)
Foreign currency forward contracts | Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives 37,795 (27,918) (877)
Foreign currency forward contracts | Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of Gain (Loss) Recognized on Derivatives (14,822) (32,687) (11,761)
Foreign currency forward contracts | Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss) [Line Items]      
Accumulated other comprehensive income (loss) $ (4,385) $ 6,194 $ 205