Derivatives - Schedule of Derivatives Not Designated as Hedging Instruments (Details) MMBTU in Thousands, Boe in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2024 USD ($) MMBTU Boe	Dec. 31, 2023 USD ($) MMBTU Boe
Derivative [Line Items]
Derivative assets - Fair value	$ 554,460	$ 610,920
Derivative liabilities - Fair value	$ 613,145	$ 613,314
Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	18,230	18,631
Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	421,525	328,844
Customer-related positions:
Derivative [Line Items]
Notional amount	$ 10,275,709	$ 11,362,194
Derivative assets - Fair value	25,288	43,195
Derivative liabilities - Fair value	450,291	419,499
Other economic hedges:
Derivative [Line Items]
Notional amount	10,517,076	11,852,864
Derivative assets - Fair value	456,502	433,969
Derivative liabilities - Fair value	22,264	43,877
Interest rate contracts | Customer-related positions:
Derivative [Line Items]
Notional amount	8,454,618	8,681,085
Derivative assets - Fair value	9,825	26,089
Derivative liabilities - Fair value	436,305	394,625
Interest rate contracts | Other economic hedges:
Derivative [Line Items]
Notional amount	8,472,584	8,706,824
Derivative assets - Fair value	438,281	397,397
Derivative liabilities - Fair value	10,652	26,187
Interest rate contracts | Swaps | Customer-related positions:
Derivative [Line Items]
Notional amount	6,826,308	6,835,822
Derivative assets - Fair value	9,729	25,649
Derivative liabilities - Fair value	423,880	377,388
Interest rate contracts | Swaps | Other economic hedges:
Derivative [Line Items]
Notional amount	6,844,274	6,861,561
Derivative assets - Fair value	425,796	380,123
Derivative liabilities - Fair value	10,552	25,731
Interest rate contracts | Written options | Customer-related positions:
Derivative [Line Items]
Notional amount	1,369,229	1,522,531
Derivative assets - Fair value	0	0
Derivative liabilities - Fair value	9,929	12,756
Interest rate contracts | Collars and corridors | Customer-related positions:
Derivative [Line Items]
Notional amount	259,081	322,732
Derivative assets - Fair value	96	440
Derivative liabilities - Fair value	2,496	4,481
Interest rate contracts | Collars and corridors | Other economic hedges:
Derivative [Line Items]
Notional amount	259,081	322,732
Derivative assets - Fair value	2,504	4,491
Derivative liabilities - Fair value	100	456
Interest rate contracts | Purchased options | Other economic hedges:
Derivative [Line Items]
Notional amount	1,369,229	1,522,531
Derivative assets - Fair value	9,981	12,783
Derivative liabilities - Fair value	0	0
Foreign exchange contracts | Customer-related positions:
Derivative [Line Items]
Notional amount	1,821,091	2,681,109
Derivative assets - Fair value	15,463	17,106
Derivative liabilities - Fair value	13,986	24,874
Foreign exchange contracts | Other economic hedges:
Derivative [Line Items]
Notional amount	2,044,492	3,146,040
Derivative assets - Fair value	18,221	36,572
Derivative liabilities - Fair value	11,612	17,690
Foreign exchange contracts | Swaps | Customer-related positions:
Derivative [Line Items]
Notional amount	1,197,938	1,588,491
Derivative assets - Fair value	7,515	5,801
Derivative liabilities - Fair value	10,558	18,118
Foreign exchange contracts | Swaps | Other economic hedges:
Derivative [Line Items]
Notional amount	1,889,946	2,862,037
Derivative assets - Fair value	18,169	36,280
Derivative liabilities - Fair value	9,433	15,757
Foreign exchange contracts | Written options | Other economic hedges:
Derivative [Line Items]
Notional amount	88,000	136,000
Derivative assets - Fair value	0	0
Derivative liabilities - Fair value	2,051	1,839
Foreign exchange contracts | Forwards and spot | Customer-related positions:
Derivative [Line Items]
Notional amount	535,153	956,618
Derivative assets - Fair value	5,897	9,466
Derivative liabilities - Fair value	3,428	6,756
Foreign exchange contracts | Forwards and spot | Other economic hedges:
Derivative [Line Items]
Notional amount	66,546	148,003
Derivative assets - Fair value	52	292
Derivative liabilities - Fair value	128	94
Foreign exchange contracts | Purchased options | Customer-related positions:
Derivative [Line Items]
Notional amount	88,000	136,000
Derivative assets - Fair value	2,051	1,839
Derivative liabilities - Fair value	0	0
Commodity contracts | Customer-related positions:
Derivative [Line Items]
Derivative assets - Fair value	25,480	6,014
Derivative liabilities - Fair value	56,903	114,974
Commodity contracts | Customer-related positions: | Crude oil
Derivative [Line Items]
Derivative assets - Fair value	22,263	5,555
Derivative liabilities - Fair value	$ 900	$ 20,548
Derivative, nonmonetary notional amount, energy measure | Boe	9,087	9,243
Commodity contracts | Customer-related positions: | Natural gas
Derivative [Line Items]
Derivative assets - Fair value	$ 3,217	$ 459
Derivative liabilities - Fair value	$ 56,003	$ 94,426
Derivative, nonmonetary notional amount, energy measure | MMBTU	212,324	166,053
Commodity contracts | Other economic hedges:
Derivative [Line Items]
Derivative assets - Fair value	$ 35,466	$ 73,590
Derivative liabilities - Fair value	13,997	6,696
Commodity contracts | Other economic hedges: | Crude oil
Derivative [Line Items]
Derivative assets - Fair value	1,311	10,851
Derivative liabilities - Fair value	$ 12,854	$ 6,391
Derivative, nonmonetary notional amount, energy measure | Boe	9,143	9,388
Commodity contracts | Other economic hedges: | Natural gas
Derivative [Line Items]
Derivative assets - Fair value	$ 34,155	$ 62,739
Derivative liabilities - Fair value	$ 1,143	$ 305
Derivative, nonmonetary notional amount, energy measure | MMBTU	209,201	162,791
Commodity contracts | Swaps | Customer-related positions: | Crude oil
Derivative [Line Items]
Derivative assets - Fair value	$ 13,897	$ 3,735
Derivative liabilities - Fair value	$ 857	$ 15,445
Derivative, nonmonetary notional amount, energy measure | Boe	3,907	3,277
Commodity contracts | Swaps | Customer-related positions: | Natural gas
Derivative [Line Items]
Derivative assets - Fair value	$ 1,796	$ 438
Derivative liabilities - Fair value	$ 43,998	$ 73,793
Derivative, nonmonetary notional amount, energy measure | MMBTU	148,337	118,325
Commodity contracts | Swaps | Other economic hedges: | Crude oil
Derivative [Line Items]
Derivative assets - Fair value	$ 1,308	$ 9,166
Derivative liabilities - Fair value	$ 10,871	$ 4,924
Derivative, nonmonetary notional amount, energy measure | Boe	3,963	3,422
Commodity contracts | Swaps | Other economic hedges: | Natural gas
Derivative [Line Items]
Derivative assets - Fair value	$ 28,395	$ 49,941
Derivative liabilities - Fair value	$ 391	$ 305
Derivative, nonmonetary notional amount, energy measure | MMBTU	145,824	116,463
Commodity contracts | Written options | Customer-related positions: | Natural gas
Derivative [Line Items]
Derivative assets - Fair value	$ 124	$ 0
Derivative liabilities - Fair value	$ 0	$ 233
Derivative, nonmonetary notional amount, energy measure | MMBTU	1,710	1,874
Commodity contracts | Purchased options | Other economic hedges: | Natural gas
Derivative [Line Items]
Derivative assets - Fair value	$ 0	$ 233
Derivative liabilities - Fair value	$ 104	$ 0
Derivative, nonmonetary notional amount, energy measure | MMBTU	1,710	1,874
Commodity contracts | Collars | Customer-related positions: | Crude oil
Derivative [Line Items]
Derivative assets - Fair value	$ 8,366	$ 1,820
Derivative liabilities - Fair value	$ 43	$ 5,103
Derivative, nonmonetary notional amount, energy measure | Boe	5,180	5,966
Commodity contracts | Collars | Customer-related positions: | Natural gas
Derivative [Line Items]
Derivative assets - Fair value	$ 1,297	$ 21
Derivative liabilities - Fair value	$ 12,005	$ 20,400
Derivative, nonmonetary notional amount, energy measure | MMBTU	62,277	45,854
Commodity contracts | Collars | Other economic hedges: | Crude oil
Derivative [Line Items]
Derivative assets - Fair value	$ 3	$ 1,685
Derivative liabilities - Fair value	$ 1,983	$ 1,467
Derivative, nonmonetary notional amount, energy measure | Boe	5,180	5,966
Commodity contracts | Collars | Other economic hedges: | Natural gas
Derivative [Line Items]
Derivative assets - Fair value	$ 5,760	$ 12,565
Derivative liabilities - Fair value	$ 648	$ 0
Derivative, nonmonetary notional amount, energy measure | MMBTU	61,667	44,454