v3.25.2
Derivatives, Derivatives Instruments Gain (Loss) in Income Statement (Details) - Not Designated as Hedging Instrument [Member] - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]        
Brokergage and Trading Revenue $ (19,093) $ 39,341 $ (84,500) $ 129,372
Gain (Loss) on Derivatives, Net 5,535 (1,091) 15,100 (9,724)
Total customer risk management programs        
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]        
Brokergage and Trading Revenue 7,510 6,765 15,899 13,090
Gain (Loss) on Derivatives, Net 0 0 0 0
Interest rate contracts [Member]        
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]        
Brokergage and Trading Revenue 895 547 1,636 3,007
Gain (Loss) on Derivatives, Net 0 0 0 0
Energy contracts [Member]        
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]        
Brokergage and Trading Revenue 6,590 6,162 14,200 9,977
Gain (Loss) on Derivatives, Net 0 0 0 0
Foreign exchange contracts [Member]        
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]        
Brokergage and Trading Revenue 25 56 63 106
Gain (Loss) on Derivatives, Net 0 0 0 0
Equity option contracts [Member]        
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]        
Brokergage and Trading Revenue 0 0 0 0
Gain (Loss) on Derivatives, Net 0 0 0 0
Trading [Member]        
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]        
Brokergage and Trading Revenue (26,603) [1] 32,576 [1] (100,399) [2] 116,282 [2]
Gain (Loss) on Derivatives, Net 0 [1] 0 [1] 0 [2] 0 [2]
Internal risk management programs [Member]        
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]        
Brokergage and Trading Revenue 0 0 0 0
Gain (Loss) on Derivatives, Net $ 5,535 $ (1,091) $ 15,100 $ (9,724)
[1] Represents changes in fair value of to-be-announced securities and other derivative instruments held to mitigate market risk of trading securities portfolio, which is offset by changes in fair value of trading securities also included in Brokerage and Trading Revenue in the Consolidated Statements of Earnings.
[2] Represents changes in fair value of to-be-announced securities and other derivative instruments held to mitigate market risk of trading securities portfolio, which is offset by changes in fair value of trading securities also included in Brokerage and trading revenue in the Consolidated Statements of Earnings.