v3.25.4
DERIVATIVE INSTRUMENTS - Derivative Contracts (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Interest rate futures | Not Designated as Hedging Instrument | Long    
Derivative [Line Items]    
Derivative, notional amount $ 7,575,688 $ 7,144,308
Interest rate futures | Not Designated as Hedging Instrument | Short    
Derivative [Line Items]    
Derivative, notional amount 4,179,575 3,061,769
Interest rate swaps | Not Designated as Hedging Instrument | Long    
Derivative [Line Items]    
Derivative, notional amount 0 0
Interest rate swaps | Not Designated as Hedging Instrument | Short    
Derivative [Line Items]    
Derivative, notional amount 29,600 0
Foreign currency forward contracts | Not Designated as Hedging Instrument | Long    
Derivative [Line Items]    
Derivative, notional amount 1,102,740 1,035,036
Foreign currency forward contracts | Not Designated as Hedging Instrument | Short    
Derivative [Line Items]    
Derivative, notional amount 412,005 508,847
Foreign currency forward contracts | Not Designated as Hedging Instrument | Long    
Derivative [Line Items]    
Derivative, notional amount 159,267 344,967
Foreign currency forward contracts | Not Designated as Hedging Instrument | Short    
Derivative [Line Items]    
Derivative, notional amount 186,854 106,970
Foreign currency forward contracts | Designated as Hedging Instrument | Long    
Derivative [Line Items]    
Derivative, notional amount 0 0
Foreign currency forward contracts | Designated as Hedging Instrument | Short    
Derivative [Line Items]    
Derivative, notional amount 64,142 60,969
Credit default swaps | Not Designated as Hedging Instrument | Long    
Derivative [Line Items]    
Derivative, notional amount 39,500 0
Credit default swaps | Not Designated as Hedging Instrument | Short    
Derivative [Line Items]    
Derivative, notional amount 847,864 1,350,509
Equity futures | Not Designated as Hedging Instrument | Long    
Derivative [Line Items]    
Derivative, notional amount 1,729,226 437,168
Equity futures | Not Designated as Hedging Instrument | Short    
Derivative [Line Items]    
Derivative, notional amount 0 0
Commodity futures | Not Designated as Hedging Instrument | Long    
Derivative [Line Items]    
Derivative, notional amount 1,189,027 684,283
Commodity futures | Not Designated as Hedging Instrument | Short    
Derivative [Line Items]    
Derivative, notional amount 0 0
Commodity options | Not Designated as Hedging Instrument | Long    
Derivative [Line Items]    
Derivative, notional amount 0 483
Commodity options | Not Designated as Hedging Instrument | Short    
Derivative [Line Items]    
Derivative, notional amount $ 0 $ 0