v3.26.1
Derivative Instruments - Fair Value of Derivative Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Equities futures | Derivative instruments not designated as hedging instruments | Balance Sheet Location [Axis]: us-gaap:OtherPayablesToBrokerDealersAndClearingOrganizations    
Derivatives Liabilities    
Fair Value $ (730) $ 1,399
Notional 623,681 940,143
Equities futures | Derivative instruments not designated as hedging instruments | Balance Sheet Location [Axis]: us-gaap:ReceivablesFromBrokersDealersAndClearingOrganizations    
Derivatives Assets    
Fair Value 6,545 (60)
Notional 4,001,895 1,017,174
Commodity futures | Derivative instruments not designated as hedging instruments | Balance Sheet Location [Axis]: us-gaap:OtherPayablesToBrokerDealersAndClearingOrganizations    
Derivatives Liabilities    
Fair Value (1,707) (4,409)
Notional 49,248 171,504
Commodity futures | Derivative instruments not designated as hedging instruments | Balance Sheet Location [Axis]: us-gaap:ReceivablesFromBrokersDealersAndClearingOrganizations    
Derivatives Assets    
Fair Value 5,977 (20,294)
Notional 11,235,551 11,492,904
Currency futures | Derivative instruments not designated as hedging instruments | Balance Sheet Location [Axis]: us-gaap:OtherPayablesToBrokerDealersAndClearingOrganizations    
Derivatives Liabilities    
Fair Value 86 216
Notional 8,394 212,120
Currency futures | Derivative instruments not designated as hedging instruments | Balance Sheet Location [Axis]: us-gaap:ReceivablesFromBrokersDealersAndClearingOrganizations    
Derivatives Assets    
Fair Value 5,071 4,418
Notional 3,484,123 4,575,259
Fixed income futures | Derivative instruments not designated as hedging instruments | Balance Sheet Location [Axis]: us-gaap:OtherPayablesToBrokerDealersAndClearingOrganizations    
Derivatives Liabilities    
Fair Value (11) (199)
Notional 49,454 383,154
Fixed income futures | Derivative instruments not designated as hedging instruments | Balance Sheet Location [Axis]: us-gaap:ReceivablesFromBrokersDealersAndClearingOrganizations    
Derivatives Assets    
Fair Value (857) (25)
Notional 370,746 11,711
Options    
Derivatives Assets    
Fair Value 19,359 97,459
Derivatives Liabilities    
Fair Value 18,022 216,992
Options | Derivative instruments not designated as hedging instruments | Balance Sheet Location [Axis]: us-gaap:FinancialInstrumentsOwnedAtFairValue    
Derivatives Assets    
Fair Value 19,359 97,459
Notional 1,671,837 2,565,169
Options | Derivative instruments not designated as hedging instruments | Balance Sheet Location [Axis]: us-gaap:IncreaseDecreaseInFinancialInstrumentsSoldNotYetPurchased    
Derivatives Liabilities    
Fair Value 18,022 216,992
Notional 1,711,286 2,637,691
Currency forwards    
Derivatives Assets    
Fair Value 438,929 211,856
Derivatives Liabilities    
Fair Value 442,864 198,463
Currency forwards | Derivative instruments not designated as hedging instruments | Balance Sheet Location [Axis]: us-gaap:FinancialInstrumentsOwnedAtFairValue    
Derivatives Assets    
Fair Value 438,928 211,856
Notional 43,056,133 28,015,291
Currency forwards | Derivative instruments not designated as hedging instruments | Balance Sheet Location [Axis]: us-gaap:IncreaseDecreaseInFinancialInstrumentsSoldNotYetPurchased    
Derivatives Liabilities    
Fair Value 442,864 198,463
Notional $ 43,058,101 $ 28,008,595