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Derivatives, Fair Value of Derivatives Contracts (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
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Derivative Assets, Fair Value, Net [Abstract] |  |  |  |
Derviative contracts, net of cash collateral, Assets, Fair value | $ 225,076 |  | $ 410,304 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |
Derivative Liabilities, Fair Value, Net of Cash Collateral | 287,509 |  | 587,473 |
Not Designated as Hedging Instrument [Member] |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |
Derivative Assets, Notional | 36,170,030 | [1] | 27,348,813 | [2]
Derivative Liabilities, Notional | 35,270,873 | [1] | 31,712,601 | [2]
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |
Derivative Assets, Gross Fair Value | 866,846 |  | 1,125,034 |
Derivative Assets, Netting Adjustments | (497,665) |  | (443,069) |
Derivative Assets, Net Fair Value Before Cash Collateral | 369,181 |  | 681,965 |
Derivative Assets, Cash Collateral | (144,105) |  | (271,661) |
Derviative contracts, net of cash collateral, Assets, Fair value | 225,076 |  | 410,304 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |
Derivative Liabilities, Gross Fair Value | 849,760 |  | 1,218,900 |
Derivative Liabilities, Netting Adjustments | (497,665) |  | (443,069) |
Derivative Liabilities, Net Fair Value Before Cash Collateral | 352,095 |  | 775,831 |
Derivative Liabilities, Cash Collateral | (64,586) |  | (188,358) |
Derivative Liabilities, Fair Value, Net of Cash Collateral | 287,509 |  | 587,473 |
Not Designated as Hedging Instrument [Member] | Total customer risk management programs |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |
Derivative Assets, Notional | 10,474,223 | [1] | 10,658,981 | [2]
Derivative Liabilities, Notional | 10,853,848 | [1] | 11,066,201 | [2]
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |
Derivative Assets, Gross Fair Value | 776,586 |  | 998,792 |
Derivative Assets, Netting Adjustments | (437,927) |  | (405,958) |
Derivative Assets, Net Fair Value Before Cash Collateral | 338,659 |  | 592,834 |
Derivative Assets, Cash Collateral | (142,585) |  | (264,665) |
Derviative contracts, net of cash collateral, Assets, Fair value | 196,074 |  | 328,169 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |
Derivative Liabilities, Gross Fair Value | 765,071 |  | 992,988 |
Derivative Liabilities, Netting Adjustments | (437,927) |  | (405,958) |
Derivative Liabilities, Net Fair Value Before Cash Collateral | 327,144 |  | 587,030 |
Derivative Liabilities, Cash Collateral | (54,041) |  | (6,441) |
Derivative Liabilities, Fair Value, Net of Cash Collateral | 273,103 |  | 580,589 |
Not Designated as Hedging Instrument [Member] | Interest rate contracts [Member] |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |
Derivative Assets, Notional | 2,964,667 | [1] | 2,754,476 | [2]
Derivative Liabilities, Notional | 2,964,667 | [1] | 2,754,476 | [2]
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |
Derivative Assets, Gross Fair Value | 109,692 |  | 108,450 |
Derivative Assets, Netting Adjustments | (2,691) |  | (6,810) |
Derivative Assets, Net Fair Value Before Cash Collateral | 107,001 |  | 101,640 |
Derivative Assets, Cash Collateral | (103,743) |  | (94,608) |
Derviative contracts, net of cash collateral, Assets, Fair value | 3,258 |  | 7,032 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |
Derivative Liabilities, Gross Fair Value | 109,685 |  | 108,402 |
Derivative Liabilities, Netting Adjustments | (2,691) |  | (6,810) |
Derivative Liabilities, Net Fair Value Before Cash Collateral | 106,994 |  | 101,592 |
Derivative Liabilities, Cash Collateral | 0 |  | 0 |
Derivative Liabilities, Fair Value, Net of Cash Collateral | 106,994 |  | 101,592 |
Not Designated as Hedging Instrument [Member] | Energy contracts [Member] |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |
Derivative Assets, Notional | 7,472,357 | [1] | 7,846,190 | [2]
Derivative Liabilities, Notional | 7,851,998 | [1] | 8,254,004 | [2]
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |
Derivative Assets, Gross Fair Value | 631,285 |  | 836,425 |
Derivative Assets, Netting Adjustments | (435,236) |  | (399,148) |
Derivative Assets, Net Fair Value Before Cash Collateral | 196,049 |  | 437,277 |
Derivative Assets, Cash Collateral | (38,770) |  | (169,141) |
Derviative contracts, net of cash collateral, Assets, Fair value | 157,279 |  | 268,136 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |
Derivative Liabilities, Gross Fair Value | 619,809 |  | 831,467 |
Derivative Liabilities, Netting Adjustments | (435,236) |  | (399,148) |
Derivative Liabilities, Net Fair Value Before Cash Collateral | 184,573 |  | 432,319 |
Derivative Liabilities, Cash Collateral | (54,007) |  | (6,441) |
Derivative Liabilities, Fair Value, Net of Cash Collateral | 130,566 |  | 425,878 |
Not Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member] |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |
Derivative Assets, Notional | 35,606 | [1] | 54,999 | [2]
Derivative Liabilities, Notional | 35,590 | [1] | 54,405 | [2]
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |
Derivative Assets, Gross Fair Value | 35,451 |  | 53,863 |
Derivative Assets, Netting Adjustments | 0 |  | 0 |
Derivative Assets, Net Fair Value Before Cash Collateral | 35,451 |  | 53,863 |
Derivative Assets, Cash Collateral | (22) |  | (872) |
Derviative contracts, net of cash collateral, Assets, Fair value | 35,429 |  | 52,991 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |
Derivative Liabilities, Gross Fair Value | 35,419 |  | 53,065 |
Derivative Liabilities, Netting Adjustments | 0 |  | 0 |
Derivative Liabilities, Net Fair Value Before Cash Collateral | 35,419 |  | 53,065 |
Derivative Liabilities, Cash Collateral | (34) |  | 0 |
Derivative Liabilities, Fair Value, Net of Cash Collateral | 35,385 |  | 53,065 |
Not Designated as Hedging Instrument [Member] | Equity option contracts [Member] |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |
Derivative Assets, Notional | 1,593 | [1] | 3,316 | [2]
Derivative Liabilities, Notional | 1,593 | [1] | 3,316 | [2]
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |
Derivative Assets, Gross Fair Value | 158 |  | 54 |
Derivative Assets, Netting Adjustments | 0 |  | 0 |
Derivative Assets, Net Fair Value Before Cash Collateral | 158 |  | 54 |
Derivative Assets, Cash Collateral | (50) |  | (44) |
Derviative contracts, net of cash collateral, Assets, Fair value | 108 |  | 10 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |
Derivative Liabilities, Gross Fair Value | 158 |  | 54 |
Derivative Liabilities, Netting Adjustments | 0 |  | 0 |
Derivative Liabilities, Net Fair Value Before Cash Collateral | 158 |  | 54 |
Derivative Liabilities, Cash Collateral | 0 |  | 0 |
Derivative Liabilities, Fair Value, Net of Cash Collateral | 158 |  | 54 |
Not Designated as Hedging Instrument [Member] | Trading [Member] |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |
Derivative Assets, Notional | 25,238,831 | [1] | 16,264,818 | [2]
Derivative Liabilities, Notional | 24,337,408 | [1] | 20,644,156 | [2]
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |
Derivative Assets, Gross Fair Value | 82,976 |  | 118,545 |
Derivative Assets, Netting Adjustments | (59,454) |  | (37,111) |
Derivative Assets, Net Fair Value Before Cash Collateral | 23,522 |  | 81,434 |
Derivative Assets, Cash Collateral | (1,520) |  | (6,996) |
Derviative contracts, net of cash collateral, Assets, Fair value | 22,002 |  | 74,438 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |
Derivative Liabilities, Gross Fair Value | 83,121 |  | 224,648 |
Derivative Liabilities, Netting Adjustments | (59,454) |  | (37,111) |
Derivative Liabilities, Net Fair Value Before Cash Collateral | 23,667 |  | 187,537 |
Derivative Liabilities, Cash Collateral | (10,545) |  | (181,917) |
Derivative Liabilities, Fair Value, Net of Cash Collateral | 13,122 |  | 5,620 |
Not Designated as Hedging Instrument [Member] | Internal risk management programs [Member] |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |
Derivative Assets, Notional | 456,976 | [1] | 425,014 | [2]
Derivative Liabilities, Notional | 79,617 | [1] | 2,244 | [2]
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |
Derivative Assets, Gross Fair Value | 7,284 |  | 7,697 |
Derivative Assets, Netting Adjustments | (284) |  | 0 |
Derivative Assets, Net Fair Value Before Cash Collateral | 7,000 |  | 7,697 |
Derivative Assets, Cash Collateral | 0 |  | 0 |
Derviative contracts, net of cash collateral, Assets, Fair value | 7,000 |  | 7,697 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |
Derivative Liabilities, Gross Fair Value | 1,568 |  | 1,264 |
Derivative Liabilities, Netting Adjustments | (284) |  | 0 |
Derivative Liabilities, Net Fair Value Before Cash Collateral | 1,284 |  | 1,264 |
Derivative Liabilities, Cash Collateral | 0 |  | 0 |
Derivative Liabilities, Fair Value, Net of Cash Collateral | $ 1,284 |  | $ 1,264 |
[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.

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