Derivatives - Derivatives Not Designated as Hedging Instruments (Details) MMBTU in Thousands, Boe in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023 USD ($) MMBTU Boe	Dec. 31, 2022 USD ($) Boe MMBTU
Derivative [Line Items]
Gross amounts recognized	$ 627,402	$ 755,328
Derivative liabilities - Fair value	$ 681,830	$ 887,264
Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	24,954	12,005
Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	266,047	247,704
Customer-related positions:
Derivative [Line Items]
Notional amount	$ 10,819,693	$ 10,158,784
Gross amounts recognized	26,339	27,146
Derivative liabilities - Fair value	469,136	592,060
Other economic hedges:
Derivative [Line Items]
Notional amount	10,635,826	9,756,521
Gross amounts recognized	395,176	447,201
Derivative liabilities - Fair value	21,952	16,886
Interest rate contracts | Customer-related positions:
Derivative [Line Items]
Notional amount	8,738,513	8,420,422
Gross amounts recognized	8,789	1,438
Derivative liabilities - Fair value	448,153	561,547
Interest rate contracts | Other economic hedges:
Derivative [Line Items]
Notional amount	8,829,603	8,511,992
Gross amounts recognized	378,676	425,390
Derivative liabilities - Fair value	10,397	3,282
Interest rate contracts | Swaps | Customer-related positions:
Derivative [Line Items]
Notional amount	6,776,171	6,656,491
Gross amounts recognized	8,537	1,438
Derivative liabilities - Fair value	416,483	521,719
Interest rate contracts | Swaps | Other economic hedges:
Derivative [Line Items]
Notional amount	6,803,027	6,683,828
Gross amounts recognized	345,976	384,201
Derivative liabilities - Fair value	9,209	2,047
Interest rate contracts | Written options | Customer-related positions:
Derivative [Line Items]
Notional amount	1,693,002	1,548,158
Gross amounts recognized	0	0
Derivative liabilities - Fair value	24,329	30,904
Interest rate contracts | Written options | Other economic hedges:
Derivative [Line Items]
Notional amount	32,117	32,117
Gross amounts recognized	0	0
Derivative liabilities - Fair value	925	1,235
Interest rate contracts | Collars and corridors | Customer-related positions:
Derivative [Line Items]
Notional amount	269,340	215,773
Gross amounts recognized	252	0
Derivative liabilities - Fair value	7,341	8,924
Interest rate contracts | Collars and corridors | Other economic hedges:
Derivative [Line Items]
Notional amount	269,340	215,772
Gross amounts recognized	7,379	8,956
Derivative liabilities - Fair value	263	0
Interest rate contracts | Purchased options | Other economic hedges:
Derivative [Line Items]
Notional amount	1,725,119	1,580,275
Gross amounts recognized	25,321	32,233
Derivative liabilities - Fair value	0	0
Foreign exchange contracts | Customer-related positions:
Derivative [Line Items]
Notional amount	2,081,180	1,738,362
Gross amounts recognized	17,550	25,708
Derivative liabilities - Fair value	20,983	30,513
Foreign exchange contracts | Other economic hedges:
Derivative [Line Items]
Notional amount	1,806,223	1,244,529
Gross amounts recognized	16,500	21,811
Derivative liabilities - Fair value	11,555	13,604
Foreign exchange contracts | Swaps | Customer-related positions:
Derivative [Line Items]
Notional amount	514,659	623,143
Gross amounts recognized	5,808	6,629
Derivative liabilities - Fair value	2,683	12,178
Foreign exchange contracts | Swaps | Other economic hedges:
Derivative [Line Items]
Notional amount	1,611,543	1,044,900
Gross amounts recognized	16,428	18,516
Derivative liabilities - Fair value	9,559	11,447
Foreign exchange contracts | Forwards and spot | Customer-related positions:
Derivative [Line Items]
Notional amount	1,439,521	993,588
Gross amounts recognized	9,866	17,009
Derivative liabilities - Fair value	18,300	18,090
Foreign exchange contracts | Forwards and spot | Other economic hedges:
Derivative [Line Items]
Notional amount	67,680	77,998
Gross amounts recognized	72	3,050
Derivative liabilities - Fair value	120	87
Foreign exchange contracts | Other | Customer-related positions:
Derivative [Line Items]
Notional amount	127,000	121,631
Gross amounts recognized	1,876	2,070
Derivative liabilities - Fair value	0	245
Foreign exchange contracts | Other | Other economic hedges:
Derivative [Line Items]
Notional amount	127,000	121,631
Gross amounts recognized	0	245
Derivative liabilities - Fair value	1,876	2,070
Commodity contracts | Customer-related positions:
Derivative [Line Items]
Gross amounts recognized	76,237	171,082
Derivative liabilities - Fair value	$ 113,902	$ 100,333
Commodity contracts | Customer-related positions: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	12,040	5,476
Gross amounts recognized	$ 24,409	$ 56,551
Derivative liabilities - Fair value	$ 12,616	$ 8,808
Commodity contracts | Customer-related positions: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	133,493	124,662
Gross amounts recognized	$ 51,828	$ 114,531
Derivative liabilities - Fair value	101,286	91,525
Commodity contracts | Other economic hedges:
Derivative [Line Items]
Gross amounts recognized	101,838	90,531
Derivative liabilities - Fair value	$ 72,697	$ 158,275
Commodity contracts | Other economic hedges: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	12,914	6,529
Gross amounts recognized	$ 11,800	$ 8,313
Derivative liabilities - Fair value	$ 21,547	$ 49,432
Commodity contracts | Other economic hedges: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	132,554	123,042
Gross amounts recognized	$ 90,038	$ 82,218
Derivative liabilities - Fair value	$ 51,150	$ 108,843
Commodity contracts | Swaps | Customer-related positions: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	7,443	2,465
Gross amounts recognized	$ 18,072	$ 39,955
Derivative liabilities - Fair value	$ 8,088	$ 6,178
Commodity contracts | Swaps | Customer-related positions: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	99,111	92,590
Gross amounts recognized	$ 50,825	$ 112,314
Derivative liabilities - Fair value	$ 71,736	$ 73,208
Commodity contracts | Swaps | Other economic hedges: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	7,539	2,587
Gross amounts recognized	$ 8,900	$ 6,935
Derivative liabilities - Fair value	$ 16,016	$ 36,060
Commodity contracts | Swaps | Other economic hedges: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	98,891	91,900
Gross amounts recognized	$ 66,395	$ 69,767
Derivative liabilities - Fair value	$ 50,147	$ 106,883
Commodity contracts | Written options | Customer-related positions: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	0	0
Gross amounts recognized	$ 0	$ 558
Derivative liabilities - Fair value	$ 0	$ 0
Commodity contracts | Written options | Customer-related positions: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	367	0
Gross amounts recognized	$ 0	$ 0
Derivative liabilities - Fair value	$ 49	$ 0
Commodity contracts | Purchased options | Other economic hedges: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	0	0
Gross amounts recognized	$ 0	$ 0
Derivative liabilities - Fair value	$ 0	$ 516
Commodity contracts | Purchased options | Other economic hedges: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	367	0
Gross amounts recognized	$ 49	$ 0
Derivative liabilities - Fair value	$ 0	$ 0
Commodity contracts | Collars | Customer-related positions: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	4,597	3,011
Gross amounts recognized	$ 6,337	$ 16,038
Derivative liabilities - Fair value	$ 4,528	$ 2,630
Commodity contracts | Collars | Customer-related positions: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	34,015	32,072
Gross amounts recognized	$ 1,003	$ 2,217
Derivative liabilities - Fair value	$ 29,501	$ 18,317
Commodity contracts | Collars | Other economic hedges: | Crude oil
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | Boe	5,375	3,942
Gross amounts recognized	$ 2,900	$ 1,378
Derivative liabilities - Fair value	$ 5,531	$ 12,856
Commodity contracts | Collars | Other economic hedges: | Natural gas
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | MMBTU	33,296	31,142
Gross amounts recognized	$ 23,594	$ 12,451
Derivative liabilities - Fair value	$ 1,003	$ 1,960