v3.26.1
Derivatives, Fair Value of Derivatives Contracts (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Derivative Assets, Fair Value, Net [Abstract]    
Derviative contracts, net of cash collateral, Assets, Fair value $ 782,985 $ 300,775
Derivative Liabilities, Fair Value, Net [Abstract]    
Derivative Liabilities, Fair Value, Net of Cash Collateral 282,590 397,573
Not Designated as Hedging Instrument [Member]    
Notional Amount of Derivatives [Abstract]    
Derivative Assets, Notional 39,117,765 [1] 32,110,883 [2]
Derivative Liabilities, Notional 35,312,824 [1] 35,879,685 [2]
Derivative Assets, Fair Value, Net [Abstract]    
Derivative Assets, Gross Fair Value 1,447,423 782,779
Derivative Assets, Netting Adjustments (569,436) (327,609)
Derivative Assets, Net Fair Value Before Cash Collateral 877,987 455,170
Derivative Assets, Cash Collateral (95,002) (154,395)
Derviative contracts, net of cash collateral, Assets, Fair value 782,985 300,775
Derivative Liabilities, Fair Value, Net [Abstract]    
Derivative Liabilities, Gross Fair Value 1,375,452 765,289
Derivative Liabilities, Netting Adjustments (569,436) (327,609)
Derivative Liabilities, Net Fair Value Before Cash Collateral 806,016 437,680
Derivative Liabilities, Cash Collateral (523,426) (40,107)
Derivative Liabilities, Fair Value, Net of Cash Collateral 282,590 397,573
Not Designated as Hedging Instrument [Member] | Total customer risk management programs    
Notional Amount of Derivatives [Abstract]    
Derivative Assets, Notional 9,838,036 [1] 9,191,840 [2]
Derivative Liabilities, Notional 9,939,771 [1] 9,245,080 [2]
Derivative Assets, Fair Value, Net [Abstract]    
Derivative Assets, Gross Fair Value 1,230,427 717,122
Derivative Assets, Netting Adjustments (481,936) (289,034)
Derivative Assets, Net Fair Value Before Cash Collateral 748,491 428,088
Derivative Assets, Cash Collateral (95,002) (152,766)
Derviative contracts, net of cash collateral, Assets, Fair value 653,489 275,322
Derivative Liabilities, Fair Value, Net [Abstract]    
Derivative Liabilities, Gross Fair Value 1,215,464 688,276
Derivative Liabilities, Netting Adjustments (481,936) (289,034)
Derivative Liabilities, Net Fair Value Before Cash Collateral 733,528 399,242
Derivative Liabilities, Cash Collateral (512,726) (6,051)
Derivative Liabilities, Fair Value, Net of Cash Collateral 220,802 393,191
Not Designated as Hedging Instrument [Member] | Interest rate contracts [Member]    
Notional Amount of Derivatives [Abstract]    
Derivative Assets, Notional 2,997,778 [1] 2,869,346 [2]
Derivative Liabilities, Notional 2,997,778 [1] 2,869,346 [2]
Derivative Assets, Fair Value, Net [Abstract]    
Derivative Assets, Gross Fair Value 45,931 51,144
Derivative Assets, Netting Adjustments (8,942) (17,199)
Derivative Assets, Net Fair Value Before Cash Collateral 36,989 33,945
Derivative Assets, Cash Collateral (26,953) (15,783)
Derviative contracts, net of cash collateral, Assets, Fair value 10,036 18,162
Derivative Liabilities, Fair Value, Net [Abstract]    
Derivative Liabilities, Gross Fair Value 45,911 51,101
Derivative Liabilities, Netting Adjustments (8,942) (17,199)
Derivative Liabilities, Net Fair Value Before Cash Collateral 36,969 33,902
Derivative Liabilities, Cash Collateral 0 (811)
Derivative Liabilities, Fair Value, Net of Cash Collateral 36,969 33,091
Not Designated as Hedging Instrument [Member] | Energy contracts [Member]    
Notional Amount of Derivatives [Abstract]    
Derivative Assets, Notional 6,766,141 [1] 6,245,552 [2]
Derivative Liabilities, Notional 6,867,903 [1] 6,299,141 [2]
Derivative Assets, Fair Value, Net [Abstract]    
Derivative Assets, Gross Fair Value 1,120,942 605,067
Derivative Assets, Netting Adjustments (472,989) (271,825)
Derivative Assets, Net Fair Value Before Cash Collateral 647,953 333,242
Derivative Assets, Cash Collateral (67,228) (136,933)
Derviative contracts, net of cash collateral, Assets, Fair value 580,725 196,309
Derivative Liabilities, Fair Value, Net [Abstract]    
Derivative Liabilities, Gross Fair Value 1,106,053 576,627
Derivative Liabilities, Netting Adjustments (472,989) (271,825)
Derivative Liabilities, Net Fair Value Before Cash Collateral 633,064 304,802
Derivative Liabilities, Cash Collateral (512,726) (5,240)
Derivative Liabilities, Fair Value, Net of Cash Collateral 120,338 299,562
Not Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member]    
Notional Amount of Derivatives [Abstract]    
Derivative Assets, Notional 72,524 [1] 75,349 [2]
Derivative Liabilities, Notional 72,497 [1] 75,000 [2]
Derivative Assets, Fair Value, Net [Abstract]    
Derivative Assets, Gross Fair Value 63,304 60,656
Derivative Assets, Netting Adjustments (5) (10)
Derivative Assets, Net Fair Value Before Cash Collateral 63,299 60,646
Derivative Assets, Cash Collateral (771) 0
Derviative contracts, net of cash collateral, Assets, Fair value 62,528 60,646
Derivative Liabilities, Fair Value, Net [Abstract]    
Derivative Liabilities, Gross Fair Value 63,250 60,293
Derivative Liabilities, Netting Adjustments (5) (10)
Derivative Liabilities, Net Fair Value Before Cash Collateral 63,245 60,283
Derivative Liabilities, Cash Collateral 0 0
Derivative Liabilities, Fair Value, Net of Cash Collateral 63,245 60,283
Not Designated as Hedging Instrument [Member] | Equity option contracts [Member]    
Notional Amount of Derivatives [Abstract]    
Derivative Assets, Notional 1,593 [1] 1,593 [2]
Derivative Liabilities, Notional 1,593 [1] 1,593 [2]
Derivative Assets, Fair Value, Net [Abstract]    
Derivative Assets, Gross Fair Value 250 255
Derivative Assets, Netting Adjustments 0 0
Derivative Assets, Net Fair Value Before Cash Collateral 250 255
Derivative Assets, Cash Collateral (50) (50)
Derviative contracts, net of cash collateral, Assets, Fair value 200 205
Derivative Liabilities, Fair Value, Net [Abstract]    
Derivative Liabilities, Gross Fair Value 250 255
Derivative Liabilities, Netting Adjustments 0 0
Derivative Liabilities, Net Fair Value Before Cash Collateral 250 255
Derivative Liabilities, Cash Collateral 0 0
Derivative Liabilities, Fair Value, Net of Cash Collateral 250 255
Not Designated as Hedging Instrument [Member] | Trading [Member]    
Notional Amount of Derivatives [Abstract]    
Derivative Assets, Notional 29,154,447 [1] 22,332,052 [2]
Derivative Liabilities, Notional 24,796,550 [1] 26,544,633 [2]
Derivative Assets, Fair Value, Net [Abstract]    
Derivative Assets, Gross Fair Value 215,327 63,803
Derivative Assets, Netting Adjustments (87,475) (38,524)
Derivative Assets, Net Fair Value Before Cash Collateral 127,852 25,279
Derivative Assets, Cash Collateral 0 (1,629)
Derviative contracts, net of cash collateral, Assets, Fair value 127,852 23,650
Derivative Liabilities, Fair Value, Net [Abstract]    
Derivative Liabilities, Gross Fair Value 155,453 75,573
Derivative Liabilities, Netting Adjustments (87,475) (38,524)
Derivative Liabilities, Net Fair Value Before Cash Collateral 67,978 37,049
Derivative Liabilities, Cash Collateral (10,700) (34,056)
Derivative Liabilities, Fair Value, Net of Cash Collateral 57,278 2,993
Not Designated as Hedging Instrument [Member] | Internal risk management programs [Member]    
Notional Amount of Derivatives [Abstract]    
Derivative Assets, Notional 125,282 [1] 586,991 [2]
Derivative Liabilities, Notional 576,503 [1] 89,972 [2]
Derivative Assets, Fair Value, Net [Abstract]    
Derivative Assets, Gross Fair Value 1,669 1,854
Derivative Assets, Netting Adjustments (25) (51)
Derivative Assets, Net Fair Value Before Cash Collateral 1,644 1,803
Derivative Assets, Cash Collateral 0 0
Derviative contracts, net of cash collateral, Assets, Fair value 1,644 1,803
Derivative Liabilities, Fair Value, Net [Abstract]    
Derivative Liabilities, Gross Fair Value 4,535 1,440
Derivative Liabilities, Netting Adjustments (25) (51)
Derivative Liabilities, Net Fair Value Before Cash Collateral 4,510 1,389
Derivative Liabilities, Cash Collateral 0 0
Derivative Liabilities, Fair Value, Net of Cash Collateral $ 4,510 $ 1,389
[1] Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.
[2] Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.