Derivatives - Schedule of Derivatives Not Designated as Hedging Instruments (Details) MMBTU in Thousands, Boe in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2025 USD ($) MMBTU Boe	Dec. 31, 2024 USD ($) MMBTU Boe
Derivative [Line Items]
Derivative assets - Fair value	$ 409,467	$ 523,133
Derivative liabilities - Fair value	385,973	545,885
Customer-related positions:
Derivative [Line Items]
Notional Amount	11,480,222	10,994,794
Derivative assets - Fair value	84,692	39,718
Derivative liabilities - Fair value	212,279	416,216
Economic hedges and other:
Derivative [Line Items]
Notional Amount	12,057,156	11,212,047
Derivative assets - Fair value	218,209	429,029
Derivative liabilities - Fair value	87,612	33,999
Interest rate contracts \| Customer-related positions:
Derivative [Line Items]
Notional Amount	9,474,603	8,493,839
Derivative assets - Fair value	47,759	11,908
Derivative liabilities - Fair value	208,714	366,649
Interest rate contracts \| Economic hedges and other:
Derivative [Line Items]
Notional Amount	9,512,674	8,511,542
Derivative assets - Fair value	210,802	367,756
Derivative liabilities - Fair value	48,017	12,312
Interest rate contracts \| Swaps \| Customer-related positions:
Derivative [Line Items]
Notional Amount	7,566,889	6,854,372
Derivative assets - Fair value	47,448	11,828
Derivative liabilities - Fair value	206,794	361,256
Interest rate contracts \| Swaps \| Economic hedges and other:
Derivative [Line Items]
Notional Amount	7,604,959	6,872,075
Derivative assets - Fair value	208,860	362,323
Derivative liabilities - Fair value	47,682	12,228
Interest rate contracts \| Written options \| Customer-related positions:
Derivative [Line Items]
Notional Amount	1,463,110	1,458,428
Derivative assets - Fair value	0	0
Derivative liabilities - Fair value	1,900	4,953
Interest rate contracts \| Collars and corridors \| Customer-related positions:
Derivative [Line Items]
Notional Amount	444,604	181,039
Derivative assets - Fair value	311	80
Derivative liabilities - Fair value	20	440
Interest rate contracts \| Collars and corridors \| Economic hedges and other:
Derivative [Line Items]
Notional Amount	444,605	181,039
Derivative assets - Fair value	20	443
Derivative liabilities - Fair value	335	84
Interest rate contracts \| Purchased options \| Economic hedges and other:
Derivative [Line Items]
Notional Amount	1,463,110	1,458,428
Derivative assets - Fair value	1,922	4,990
Derivative liabilities - Fair value	0	0
Foreign exchange contracts \| Customer-related positions:
Derivative [Line Items]
Notional Amount	2,005,619	2,500,955
Derivative assets - Fair value	36,933	27,810
Derivative liabilities - Fair value	3,565	49,567
Foreign exchange contracts \| Economic hedges and other:
Derivative [Line Items]
Notional Amount	2,544,482	2,700,505
Derivative assets - Fair value	7,407	61,273
Derivative liabilities - Fair value	39,595	21,687
Foreign exchange contracts \| Forwards and spot \| Customer-related positions:
Derivative [Line Items]
Notional Amount	1,156,203	996,486
Derivative assets - Fair value	23,661	11,693
Derivative liabilities - Fair value	2,831	24,201
Foreign exchange contracts \| Forwards and spot \| Economic hedges and other:
Derivative [Line Items]
Notional Amount	234,278	86,750
Derivative assets - Fair value	1,602	2,318
Derivative liabilities - Fair value	3,498	1,738
Foreign exchange contracts \| Swaps \| Customer-related positions:
Derivative [Line Items]
Notional Amount	785,956	1,504,469
Derivative assets - Fair value	13,272	16,117
Derivative liabilities - Fair value	661	25,366
Foreign exchange contracts \| Swaps \| Economic hedges and other:
Derivative [Line Items]
Notional Amount	2,246,744	2,613,755
Derivative assets - Fair value	5,718	58,955
Derivative liabilities - Fair value	36,083	19,949
Foreign exchange contracts \| Written options \| Customer-related positions:
Derivative [Line Items]
Notional Amount	63,460	0
Derivative assets - Fair value	0	0
Derivative liabilities - Fair value	73	0
Foreign exchange contracts \| Purchased options \| Economic hedges and other:
Derivative [Line Items]
Notional Amount	63,460	0
Derivative assets - Fair value	87	0
Derivative liabilities - Fair value	14	0
Commodity contracts \| Customer-related positions:
Derivative [Line Items]
Derivative assets - Fair value	7,919	25,609
Derivative liabilities - Fair value	67,251	32,500
Commodity contracts \| Customer-related positions: \| Crude Oil
Derivative [Line Items]
Derivative assets - Fair value	226	6,286
Derivative liabilities - Fair value	$ 42,155	$ 10,236
Derivative, nonmonetary notional amount, energy measure \| Boe	8,002	10,307
Commodity contracts \| Customer-related positions: \| Natural Gas
Derivative [Line Items]
Derivative assets - Fair value	$ 7,693	$ 19,323
Derivative liabilities - Fair value	$ 25,096	$ 22,264
Derivative, nonmonetary notional amount, energy measure \| MMBTU	184,544	205,015
Commodity contracts \| Economic hedges and other:
Derivative [Line Items]
Derivative assets - Fair value	$ 58,103	$ 22,890
Derivative liabilities - Fair value	4,907	12,828
Commodity contracts \| Economic hedges and other: \| Crude Oil
Derivative [Line Items]
Derivative assets - Fair value	34,033	6,026
Derivative liabilities - Fair value	$ 32	$ 3,969
Derivative, nonmonetary notional amount, energy measure \| Boe	8,002	10,307
Commodity contracts \| Economic hedges and other: \| Natural Gas
Derivative [Line Items]
Derivative assets - Fair value	$ 24,070	$ 16,864
Derivative liabilities - Fair value	$ 4,875	$ 8,859
Derivative, nonmonetary notional amount, energy measure \| MMBTU	179,471	201,711
Commodity contracts \| Swaps \| Customer-related positions: \| Crude Oil
Derivative [Line Items]
Derivative assets - Fair value	$ 205	$ 4,682
Derivative liabilities - Fair value	$ 28,533	$ 6,874
Derivative, nonmonetary notional amount, energy measure \| Boe	4,255	4,830
Commodity contracts \| Swaps \| Customer-related positions: \| Natural Gas
Derivative [Line Items]
Derivative assets - Fair value	$ 5,814	$ 13,095
Derivative liabilities - Fair value	$ 18,403	$ 17,708
Derivative, nonmonetary notional amount, energy measure \| MMBTU	112,599	141,736
Commodity contracts \| Swaps \| Economic hedges and other: \| Crude Oil
Derivative [Line Items]
Derivative assets - Fair value	$ 25,309	$ 4,479
Derivative liabilities - Fair value	$ 11	$ 3,893
Derivative, nonmonetary notional amount, energy measure \| Boe	4,255	4,830
Commodity contracts \| Swaps \| Economic hedges and other: \| Natural Gas
Derivative [Line Items]
Derivative assets - Fair value	$ 18,258	$ 13,323
Derivative liabilities - Fair value	$ 3,963	$ 5,056
Derivative, nonmonetary notional amount, energy measure \| MMBTU	110,506	139,136
Commodity contracts \| Written options \| Customer-related positions: \| Natural Gas
Derivative [Line Items]
Derivative assets - Fair value	$ 0	$ 167
Derivative liabilities - Fair value	$ 0	$ 0
Derivative, nonmonetary notional amount, energy measure \| MMBTU	0	1,234
Commodity contracts \| Collars \| Customer-related positions: \| Crude Oil
Derivative [Line Items]
Derivative assets - Fair value	$ 21	$ 1,604
Derivative liabilities - Fair value	$ 13,622	$ 3,362
Derivative, nonmonetary notional amount, energy measure \| Boe	3,747	5,477
Commodity contracts \| Collars \| Customer-related positions: \| Natural Gas
Derivative [Line Items]
Derivative assets - Fair value	$ 1,879	$ 6,061
Derivative liabilities - Fair value	$ 6,693	$ 4,556
Derivative, nonmonetary notional amount, energy measure \| MMBTU	71,945	62,045
Commodity contracts \| Collars \| Economic hedges and other: \| Crude Oil
Derivative [Line Items]
Derivative assets - Fair value	$ 8,724	$ 1,547
Derivative liabilities - Fair value	$ 21	$ 76
Derivative, nonmonetary notional amount, energy measure \| Boe	3,747	5,477
Commodity contracts \| Collars \| Economic hedges and other: \| Natural Gas
Derivative [Line Items]
Derivative assets - Fair value	$ 5,812	$ 3,541
Derivative liabilities - Fair value	$ 912	$ 3,650
Derivative, nonmonetary notional amount, energy measure \| MMBTU	68,965	61,341
Commodity contracts \| Purchased options \| Economic hedges and other: \| Natural Gas
Derivative [Line Items]
Derivative assets - Fair value	$ 0	$ 0
Derivative liabilities - Fair value	$ 0	$ 153
Derivative, nonmonetary notional amount, energy measure \| MMBTU	0	1,234

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset.

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and elected not to be offset.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Nominal energy measure used to calculate payments on a derivative instrument.

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- Definition

Nominal or face amount used to calculate payment on derivative.

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