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Derivatives, Fair Value of Derivatives Contracts (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
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Derivative Assets, Fair Value, Net [Abstract] |  |  |  |  |
Derviative contracts, net of cash collateral, Assets, Fair value |  | $ 263,493 |  | $ 410,304 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Liabilities, Fair Value, Net of Cash Collateral |  | 438,605 |  | 587,473 |
Not Designated as Hedging Instrument [Member] |  |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |  |
Derivative Assets, Notional |  | 30,472,769 | [1] | 27,348,813 | [2]
Derivative Liabilities, Notional |  | 34,633,455 | [1] | 31,712,601 | [2]
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Assets, Gross Fair Value |  | 999,850 |  | 1,125,034 |
Derivative Assets, Netting Adjustments |  | (506,617) |  | (443,069) |
Derivative Assets, Net Fair Value Before Cash Collateral |  | 493,233 |  | 681,965 |
Derivative Assets, Cash Collateral |  | (229,740) |  | (271,661) |
Derviative contracts, net of cash collateral, Assets, Fair value |  | 263,493 |  | 410,304 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Liabilities, Gross Fair Value |  | 1,021,229 |  | 1,218,900 |
Derivative Liabilities, Netting Adjustments |  | (506,617) |  | (443,069) |
Derivative Liabilities, Net Fair Value Before Cash Collateral |  | 514,612 |  | 775,831 |
Derivative Liabilities, Cash Collateral |  | (76,007) |  | (188,358) |
Derivative Liabilities, Fair Value, Net of Cash Collateral |  | 438,605 |  | 587,473 |
Not Designated as Hedging Instrument [Member] | Total customer risk management programs |  |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |  |
Derivative Assets, Notional |  | 10,400,044 | [1] | 10,658,981 | [2]
Derivative Liabilities, Notional |  | 10,843,682 | [1] | 11,066,201 | [2]
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Assets, Gross Fair Value |  | 928,550 |  | 998,792 |
Derivative Assets, Netting Adjustments |  | (465,139) |  | (405,958) |
Derivative Assets, Net Fair Value Before Cash Collateral |  | 463,411 |  | 592,834 |
Derivative Assets, Cash Collateral |  | (229,696) |  | (264,665) |
Derviative contracts, net of cash collateral, Assets, Fair value |  | 233,715 |  | 328,169 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Liabilities, Gross Fair Value |  | 925,163 |  | 992,988 |
Derivative Liabilities, Netting Adjustments |  | (465,139) |  | (405,958) |
Derivative Liabilities, Net Fair Value Before Cash Collateral |  | 460,024 |  | 587,030 |
Derivative Liabilities, Cash Collateral |  | (29,444) |  | (6,441) |
Derivative Liabilities, Fair Value, Net of Cash Collateral |  | 430,580 |  | 580,589 |
Not Designated as Hedging Instrument [Member] | Interest rate contracts [Member] |  |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |  |
Derivative Assets, Notional |  | 3,075,103 | [1] | 2,754,476 | [2]
Derivative Liabilities, Notional | [1] | 3,065,103 |  | 2,754,476 |
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Assets, Gross Fair Value |  | 118,237 |  | 108,450 |
Derivative Assets, Netting Adjustments |  | (3,844) |  | (6,810) |
Derivative Assets, Net Fair Value Before Cash Collateral |  | 114,393 |  | 101,640 |
Derivative Assets, Cash Collateral |  | (111,283) |  | (94,608) |
Derviative contracts, net of cash collateral, Assets, Fair value |  | 3,110 |  | 7,032 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Liabilities, Gross Fair Value |  | 116,796 |  | 108,402 |
Derivative Liabilities, Netting Adjustments |  | (3,844) |  | (6,810) |
Derivative Liabilities, Net Fair Value Before Cash Collateral |  | 112,952 |  | 101,592 |
Derivative Liabilities, Cash Collateral |  | 0 |  | 0 |
Derivative Liabilities, Fair Value, Net of Cash Collateral |  | 112,952 |  | 101,592 |
Not Designated as Hedging Instrument [Member] | Energy contracts [Member] |  |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |  |
Derivative Assets, Notional |  | 7,266,492 | [1] | 7,846,190 | [2]
Derivative Liabilities, Notional |  | 7,720,466 | [1] | 8,254,004 | [2]
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Assets, Gross Fair Value |  | 754,565 |  | 836,425 |
Derivative Assets, Netting Adjustments |  | (461,295) |  | (399,148) |
Derivative Assets, Net Fair Value Before Cash Collateral |  | 293,270 |  | 437,277 |
Derivative Assets, Cash Collateral |  | (117,521) |  | (169,141) |
Derviative contracts, net of cash collateral, Assets, Fair value |  | 175,749 |  | 268,136 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Liabilities, Gross Fair Value |  | 753,145 |  | 831,467 |
Derivative Liabilities, Netting Adjustments |  | (461,295) |  | (399,148) |
Derivative Liabilities, Net Fair Value Before Cash Collateral |  | 291,850 |  | 432,319 |
Derivative Liabilities, Cash Collateral |  | (29,444) |  | (6,441) |
Derivative Liabilities, Fair Value, Net of Cash Collateral |  | 262,406 |  | 425,878 |
Not Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member] |  |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |  |
Derivative Assets, Notional |  | 56,590 | [1] | 54,999 | [2]
Derivative Liabilities, Notional |  | 56,254 | [1] | 54,405 | [2]
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Assets, Gross Fair Value |  | 55,687 |  | 53,863 |
Derivative Assets, Netting Adjustments |  | 0 |  | 0 |
Derivative Assets, Net Fair Value Before Cash Collateral |  | 55,687 |  | 53,863 |
Derivative Assets, Cash Collateral |  | (842) |  | (872) |
Derviative contracts, net of cash collateral, Assets, Fair value |  | 54,845 |  | 52,991 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Liabilities, Gross Fair Value |  | 55,161 |  | 53,065 |
Derivative Liabilities, Netting Adjustments |  | 0 |  | 0 |
Derivative Liabilities, Net Fair Value Before Cash Collateral |  | 55,161 |  | 53,065 |
Derivative Liabilities, Cash Collateral |  | 0 |  | 0 |
Derivative Liabilities, Fair Value, Net of Cash Collateral |  | 55,161 |  | 53,065 |
Not Designated as Hedging Instrument [Member] | Equity option contracts [Member] |  |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |  |
Derivative Assets, Notional |  | 1,859 | [1] | 3,316 | [2]
Derivative Liabilities, Notional |  | 1,859 | [1] | 3,316 | [2]
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Assets, Gross Fair Value |  | 61 |  | 54 |
Derivative Assets, Netting Adjustments |  | 0 |  | 0 |
Derivative Assets, Net Fair Value Before Cash Collateral |  | 61 |  | 54 |
Derivative Assets, Cash Collateral |  | (50) |  | (44) |
Derviative contracts, net of cash collateral, Assets, Fair value |  | 11 |  | 10 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Liabilities, Gross Fair Value |  | 61 |  | 54 |
Derivative Liabilities, Netting Adjustments |  | 0 |  | 0 |
Derivative Liabilities, Net Fair Value Before Cash Collateral |  | 61 |  | 54 |
Derivative Liabilities, Cash Collateral |  | 0 |  | 0 |
Derivative Liabilities, Fair Value, Net of Cash Collateral |  | 61 |  | 54 |
Not Designated as Hedging Instrument [Member] | Trading [Member] |  |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |  |
Derivative Assets, Notional |  | 19,616,813 | [1] | 16,264,818 | [2]
Derivative Liabilities, Notional |  | 23,751,156 | [1] | 20,644,156 | [2]
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Assets, Gross Fair Value |  | 67,692 |  | 118,545 |
Derivative Assets, Netting Adjustments |  | (40,165) |  | (37,111) |
Derivative Assets, Net Fair Value Before Cash Collateral |  | 27,527 |  | 81,434 |
Derivative Assets, Cash Collateral |  | (44) |  | (6,996) |
Derviative contracts, net of cash collateral, Assets, Fair value |  | 27,483 |  | 74,438 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Liabilities, Gross Fair Value |  | 93,502 |  | 224,648 |
Derivative Liabilities, Netting Adjustments |  | (40,165) |  | (37,111) |
Derivative Liabilities, Net Fair Value Before Cash Collateral |  | 53,337 |  | 187,537 |
Derivative Liabilities, Cash Collateral |  | (46,563) |  | (181,917) |
Derivative Liabilities, Fair Value, Net of Cash Collateral |  | 6,774 |  | 5,620 |
Not Designated as Hedging Instrument [Member] | Internal risk management programs [Member] |  |  |  |  |
Notional Amount of Derivatives [Abstract] |  |  |  |  |
Derivative Assets, Notional |  | 455,912 | [1] | 425,014 | [2]
Derivative Liabilities, Notional |  | 38,617 | [1] | 2,244 | [2]
Derivative Assets, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Assets, Gross Fair Value |  | 3,608 |  | 7,697 |
Derivative Assets, Netting Adjustments |  | (1,313) |  | 0 |
Derivative Assets, Net Fair Value Before Cash Collateral |  | 2,295 |  | 7,697 |
Derivative Assets, Cash Collateral |  | 0 |  | 0 |
Derviative contracts, net of cash collateral, Assets, Fair value |  | 2,295 |  | 7,697 |
Derivative Liabilities, Fair Value, Net [Abstract] |  |  |  |  |
Derivative Liabilities, Gross Fair Value |  | 2,564 |  | 1,264 |
Derivative Liabilities, Netting Adjustments |  | (1,313) |  | 0 |
Derivative Liabilities, Net Fair Value Before Cash Collateral |  | 1,251 |  | 1,264 |
Derivative Liabilities, Cash Collateral |  | 0 |  | 0 |
Derivative Liabilities, Fair Value, Net of Cash Collateral |  | $ 1,251 |  | $ 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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