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Derivatives - Schedule of Derivatives Not Designated as Hedging Instruments (Details) MMBTU in Thousands, Boe in Thousands, $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 USD ($) MMBTU Boe | Dec. 31, 2024 USD ($) Boe MMBTU
Derivative [Line Items] |  |
Derivative assets - Fair value | $ 408,429 | $ 523,133
Derivative liabilities - Fair value | 382,202 | 545,885
Customer-related positions: |  |
Derivative [Line Items] |  |
Notional Amount | 11,400,638 | 10,994,794
Derivative assets - Fair value | 88,377 | 39,718
Derivative liabilities - Fair value | 223,400 | 416,216
Economic hedges and other: |  |
Derivative [Line Items] |  |
Notional Amount | 11,869,964 | 11,212,047
Derivative assets - Fair value | 228,608 | 429,029
Derivative liabilities - Fair value | 86,840 | 33,999
Interest rate contracts | Customer-related positions: |  |
Derivative [Line Items] |  |
Notional Amount | 9,503,312 | 8,493,839
Derivative assets - Fair value | 51,786 | 11,908
Derivative liabilities - Fair value | 217,741 | 366,649
Interest rate contracts | Economic hedges and other: |  |
Derivative [Line Items] |  |
Notional Amount | 9,503,312 | 8,511,542
Derivative assets - Fair value | 219,200 | 367,756
Derivative liabilities - Fair value | 51,535 | 12,312
Interest rate contracts | Swaps | Customer-related positions: |  |
Derivative [Line Items] |  |
Notional Amount | 7,526,652 | 6,854,372
Derivative assets - Fair value | 51,303 | 11,828
Derivative liabilities - Fair value | 215,703 | 361,256
Interest rate contracts | Swaps | Economic hedges and other: |  |
Derivative [Line Items] |  |
Notional Amount | 7,526,652 | 6,872,075
Derivative assets - Fair value | 217,149 | 362,323
Derivative liabilities - Fair value | 51,010 | 12,228
Interest rate contracts | Written options | Customer-related positions: |  |
Derivative [Line Items] |  |
Notional Amount | 1,519,006 | 1,458,428
Derivative assets - Fair value | 0 | 0
Derivative liabilities - Fair value | 1,942 | 4,953
Interest rate contracts | Collars and corridors | Customer-related positions: |  |
Derivative [Line Items] |  |
Notional Amount | 457,654 | 181,039
Derivative assets - Fair value | 483 | 80
Derivative liabilities - Fair value | 96 | 440
Interest rate contracts | Collars and corridors | Economic hedges and other: |  |
Derivative [Line Items] |  |
Notional Amount | 457,654 | 181,039
Derivative assets - Fair value | 96 | 443
Derivative liabilities - Fair value | 525 | 84
Interest rate contracts | Purchased options | Economic hedges and other: |  |
Derivative [Line Items] |  |
Notional Amount | 1,519,006 | 1,458,428
Derivative assets - Fair value | 1,955 | 4,990
Derivative liabilities - Fair value | 0 | 0
Foreign exchange contracts | Customer-related positions: |  |
Derivative [Line Items] |  |
Notional Amount | 1,897,326 | 2,500,955
Derivative assets - Fair value | 36,591 | 27,810
Derivative liabilities - Fair value | 5,659 | 49,567
Foreign exchange contracts | Economic hedges and other: |  |
Derivative [Line Items] |  |
Notional Amount | 2,366,652 | 2,700,505
Derivative assets - Fair value | 9,408 | 61,273
Derivative liabilities - Fair value | 35,305 | 21,687
Foreign exchange contracts | Swaps | Customer-related positions: |  |
Derivative [Line Items] |  |
Notional Amount | 830,798 | 1,504,469
Derivative assets - Fair value | 15,555 | 16,117
Derivative liabilities - Fair value | 2,406 | 25,366
Foreign exchange contracts | Swaps | Economic hedges and other: |  |
Derivative [Line Items] |  |
Notional Amount | 2,078,033 | 2,613,755
Derivative assets - Fair value | 7,635 | 58,955
Derivative liabilities - Fair value | 31,544 | 19,949
Foreign exchange contracts | Written options | Customer-related positions: |  |
Derivative [Line Items] |  |
Notional Amount | 76,120 | 0
Derivative assets - Fair value | 0 | 0
Derivative liabilities - Fair value | 152 | 0
Foreign exchange contracts | Forwards and spot | Customer-related positions: |  |
Derivative [Line Items] |  |
Notional Amount | 990,408 | 996,486
Derivative assets - Fair value | 21,036 | 11,693
Derivative liabilities - Fair value | 3,101 | 24,201
Foreign exchange contracts | Forwards and spot | Economic hedges and other: |  |
Derivative [Line Items] |  |
Notional Amount | 212,499 | 86,750
Derivative assets - Fair value | 1,621 | 2,318
Derivative liabilities - Fair value | 3,761 | 1,738
Foreign exchange contracts | Purchased options | Economic hedges and other: |  |
Derivative [Line Items] |  |
Notional Amount | 76,120 | 0
Derivative assets - Fair value | 152 | 0
Derivative liabilities - Fair value | 0 | 0
Commodity contracts | Customer-related positions: |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | 15,561 | 25,609
Derivative liabilities - Fair value | 47,533 | 32,500
Commodity contracts | Customer-related positions: | Crude oil |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | 992 | 6,286
Derivative liabilities - Fair value | $ 29,546 | $ 10,236
Derivative, nonmonetary notional amount, energy measure | Boe | 9,675 | 10,307
Commodity contracts | Customer-related positions: | Natural gas |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | $ 14,569 | $ 19,323
Derivative liabilities - Fair value | $ 17,987 | $ 22,264
Derivative, nonmonetary notional amount, energy measure | MMBTU | 185,263 | 205,015
Commodity contracts | Economic hedges and other: |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | $ 32,904 | $ 22,890
Derivative liabilities - Fair value | 8,242 | 12,828
Commodity contracts | Economic hedges and other: | Crude oil |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | 20,401 | 6,026
Derivative liabilities - Fair value | $ 228 | $ 3,969
Derivative, nonmonetary notional amount, energy measure | Boe | 9,675 | 10,307
Commodity contracts | Economic hedges and other: | Natural gas |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | $ 12,503 | $ 16,864
Derivative liabilities - Fair value | $ 8,014 | $ 8,859
Derivative, nonmonetary notional amount, energy measure | MMBTU | 179,026 | 201,711
Commodity contracts | Swaps | Customer-related positions: | Crude oil |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | $ 293 | $ 4,682
Derivative liabilities - Fair value | $ 20,392 | $ 6,874
Derivative, nonmonetary notional amount, energy measure | Boe | 4,839 | 4,830
Commodity contracts | Swaps | Customer-related positions: | Natural gas |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | $ 9,516 | $ 13,095
Derivative liabilities - Fair value | $ 12,452 | $ 17,708
Derivative, nonmonetary notional amount, energy measure | MMBTU | 103,622 | 141,736
Commodity contracts | Swaps | Economic hedges and other: | Crude oil |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | $ 16,094 | $ 4,479
Derivative liabilities - Fair value | $ 155 | $ 3,893
Derivative, nonmonetary notional amount, energy measure | Boe | 4,839 | 4,830
Commodity contracts | Swaps | Economic hedges and other: | Natural gas |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | $ 8,655 | $ 13,323
Derivative liabilities - Fair value | $ 5,076 | $ 5,056
Derivative, nonmonetary notional amount, energy measure | MMBTU | 99,105 | 139,136
Commodity contracts | Written options | Customer-related positions: | Natural gas |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | $ 113 | $ 167
Derivative liabilities - Fair value | $ 0 | $ 0
Derivative, nonmonetary notional amount, energy measure | MMBTU | 611 | 1,234
Commodity contracts | Purchased options | Economic hedges and other: | Natural gas |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | $ 0 | $ 0
Derivative liabilities - Fair value | $ 105 | $ 153
Derivative, nonmonetary notional amount, energy measure | MMBTU | 611 | 1,234
Commodity contracts | Collars | Customer-related positions: | Crude oil |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | $ 699 | $ 1,604
Derivative liabilities - Fair value | $ 9,154 | $ 3,362
Derivative, nonmonetary notional amount, energy measure | Boe | 4,836 | 5,477
Commodity contracts | Collars | Customer-related positions: | Natural gas |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | $ 4,940 | $ 6,061
Derivative liabilities - Fair value | $ 5,535 | $ 4,556
Derivative, nonmonetary notional amount, energy measure | MMBTU | 81,030 | 62,045
Commodity contracts | Collars | Economic hedges and other: | Crude oil |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | $ 4,307 | $ 1,547
Derivative liabilities - Fair value | $ 73 | $ 76
Derivative, nonmonetary notional amount, energy measure | Boe | 4,836 | 5,477
Commodity contracts | Collars | Economic hedges and other: | Natural gas |  |
Derivative [Line Items] |  |
Derivative assets - Fair value | $ 3,848 | $ 3,541
Derivative liabilities - Fair value | $ 2,833 | $ 3,650
Derivative, nonmonetary notional amount, energy measure | MMBTU | 79,310 | 61,341

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