Derivatives, Fair Value of Derivatives Contracts (Details) - USD ($) $ in Thousands	Mar. 31, 2023		Dec. 31, 2022
Derivative Assets, Fair Value, Net [Abstract]
Derviative contracts, net of cash collateral, Assets, Fair value	$ 394,291		$ 880,343
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Fair Value, Net of Cash Collateral	510,483		554,900
Not Designated as Hedging Instrument [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	24,892,189	[1]	28,273,268	[2]
Derivative Liabilities, Notional	26,504,073	[1]	25,778,851	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	1,259,825		1,736,280
Derivative Assets, Netting Adjustments	(642,685)		(669,203)
Derivative Assets, Net Fair Value Before Cash Collateral	617,140		1,067,077
Derivative Assets, Cash Collateral	(222,849)		(186,734)
Derviative contracts, net of cash collateral, Assets, Fair value	394,291		880,343
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	1,293,255		1,708,852
Derivative Liabilities, Netting Adjustments	(642,685)		(669,203)
Derivative Liabilities, Net Fair Value Before Cash Collateral	650,570		1,039,649
Derivative Liabilities, Cash Collateral	(140,087)		(484,749)
Derivative Liabilities, Fair Value, Net of Cash Collateral	510,483		554,900
Not Designated as Hedging Instrument [Member] | Total customer risk management programs
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	10,219,761	[1]	10,788,231	[2]
Derivative Liabilities, Notional	10,326,482	[1]	11,561,139	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	1,167,177		1,607,870
Derivative Assets, Netting Adjustments	(595,579)		(594,543)
Derivative Assets, Net Fair Value Before Cash Collateral	571,598		1,013,327
Derivative Assets, Cash Collateral	(221,410)		(182,088)
Derviative contracts, net of cash collateral, Assets, Fair value	350,188		831,239
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	1,174,061		1,612,300
Derivative Liabilities, Netting Adjustments	(595,579)		(594,543)
Derivative Liabilities, Net Fair Value Before Cash Collateral	578,482		1,017,757
Derivative Liabilities, Cash Collateral	(80,146)		(484,326)
Derivative Liabilities, Fair Value, Net of Cash Collateral	498,336		533,431
Not Designated as Hedging Instrument [Member] | Interest rate contracts [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	2,691,550	[1]	2,629,318	[2]
Derivative Liabilities, Notional	2,691,550	[1]	2,629,122	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	121,481		158,825
Derivative Assets, Netting Adjustments	(3,303)		0
Derivative Assets, Net Fair Value Before Cash Collateral	118,178		158,825
Derivative Assets, Cash Collateral	(98,143)		(114,955)
Derviative contracts, net of cash collateral, Assets, Fair value	20,035		43,870
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	121,040		158,816
Derivative Liabilities, Netting Adjustments	(3,303)		0
Derivative Liabilities, Net Fair Value Before Cash Collateral	117,737		158,816
Derivative Liabilities, Cash Collateral	0		0
Derivative Liabilities, Fair Value, Net of Cash Collateral	117,737		158,816
Not Designated as Hedging Instrument [Member] | Energy contracts [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	7,456,604	[1]	7,918,020	[2]
Derivative Liabilities, Notional	7,564,737	[1]	8,696,060	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	988,149		1,232,283
Derivative Assets, Netting Adjustments	(592,276)		(594,543)
Derivative Assets, Net Fair Value Before Cash Collateral	395,873		637,740
Derivative Assets, Cash Collateral	(121,612)		(67,024)
Derviative contracts, net of cash collateral, Assets, Fair value	274,261		570,716
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	997,077		1,242,058
Derivative Liabilities, Netting Adjustments	(592,276)		(594,543)
Derivative Liabilities, Net Fair Value Before Cash Collateral	404,801		647,515
Derivative Liabilities, Cash Collateral	(80,146)		(484,319)
Derivative Liabilities, Fair Value, Net of Cash Collateral	324,655		163,196
Not Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	59,321	[1]	219,791	[2]
Derivative Liabilities, Notional	57,909	[1]	214,855	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	57,431		216,569
Derivative Assets, Netting Adjustments	0		0
Derivative Assets, Net Fair Value Before Cash Collateral	57,431		216,569
Derivative Assets, Cash Collateral	(1,560)		0
Derviative contracts, net of cash collateral, Assets, Fair value	55,871		216,569
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	55,828		211,233
Derivative Liabilities, Netting Adjustments	0		0
Derivative Liabilities, Net Fair Value Before Cash Collateral	55,828		211,233
Derivative Liabilities, Cash Collateral	0		(7)
Derivative Liabilities, Fair Value, Net of Cash Collateral	55,828		211,226
Not Designated as Hedging Instrument [Member] | Equity option contracts [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	12,286	[1]	21,102	[2]
Derivative Liabilities, Notional	12,286	[1]	21,102	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	116		193
Derivative Assets, Netting Adjustments	0		0
Derivative Assets, Net Fair Value Before Cash Collateral	116		193
Derivative Assets, Cash Collateral	(95)		(109)
Derviative contracts, net of cash collateral, Assets, Fair value	21		84
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	116		193
Derivative Liabilities, Netting Adjustments	0		0
Derivative Liabilities, Net Fair Value Before Cash Collateral	116		193
Derivative Liabilities, Cash Collateral	0		0
Derivative Liabilities, Fair Value, Net of Cash Collateral	116		193
Not Designated as Hedging Instrument [Member] | Trading [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	14,507,221	[1]	17,400,037	[2]
Derivative Liabilities, Notional	16,042,176	[1]	14,038,906	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	87,395		126,910
Derivative Assets, Netting Adjustments	(45,420)		(74,647)
Derivative Assets, Net Fair Value Before Cash Collateral	41,975		52,263
Derivative Assets, Cash Collateral	(1,439)		(4,646)
Derviative contracts, net of cash collateral, Assets, Fair value	40,536		47,617
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	116,109		94,958
Derivative Liabilities, Netting Adjustments	(45,420)		(74,647)
Derivative Liabilities, Net Fair Value Before Cash Collateral	70,689		20,311
Derivative Liabilities, Cash Collateral	(59,941)		(423)
Derivative Liabilities, Fair Value, Net of Cash Collateral	10,748		19,888
Not Designated as Hedging Instrument [Member] | Internal risk management programs [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	165,207	[1]	85,000	[2]
Derivative Liabilities, Notional	135,415	[1]	178,806	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	5,253		1,500
Derivative Assets, Netting Adjustments	(1,686)		(13)
Derivative Assets, Net Fair Value Before Cash Collateral	3,567		1,487
Derivative Assets, Cash Collateral	0		0
Derviative contracts, net of cash collateral, Assets, Fair value	3,567		1,487
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	3,085		1,594
Derivative Liabilities, Netting Adjustments	(1,686)		(13)
Derivative Liabilities, Net Fair Value Before Cash Collateral	1,399		1,581
Derivative Liabilities, Cash Collateral	0		0
Derivative Liabilities, Fair Value, Net of Cash Collateral	$ 1,399		$ 1,581

[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.