Derivatives, Notional or Contractual Amounts and Fair Values of Derivatives (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, gross	$ 95,779	$ 52,908
Fair value derivative assets, netting	(66,526)	(31,430)
Derivative assets	29,253	21,478
Fair value of derivative liabilities, gross	91,238	45,956
Fair value derivative liabilities, netting	(67,838)	(36,532)
Derivative liabilities	23,400	9,424
Designated as hedging instrument [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, gross	709	2,519
Fair value of derivative liabilities, gross	2,578	999
Designated as hedging instrument [Member] \| Interest rate contracts [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	235,162	153,993
Fair value derivative assets, gross	625	2,212
Fair value of derivative liabilities, gross	565	327
Designated as hedging instrument [Member] \| Commodity contracts [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	1,921	1,739
Fair value derivative assets, gross	41	26
Fair value of derivative liabilities, gross	16	3
Designated as hedging instrument [Member] \| Foreign exchange contracts [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	17,352	24,949
Fair value derivative assets, gross	43	281
Fair value of derivative liabilities, gross	1,997	669
Not designated as hedging instrument [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, gross	95,070	50,389
Fair value of derivative liabilities, gross	88,660	44,957
Economic hedges [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, gross	2,914	1,935
Fair value of derivative liabilities, gross	1,191	1,323
Economic hedges [Member] \| Interest rate contracts [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	86,738	142,234
Fair value derivative assets, gross	1,058	40
Fair value of derivative liabilities, gross	489	41
Economic hedges [Member] \| Equity contracts [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	3,648	26,263
Fair value derivative assets, gross	0	1,493
Fair value of derivative liabilities, gross	366	1,194
Economic hedges [Member] \| Foreign exchange contracts [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	32,965	28,192
Fair value derivative assets, gross	1,843	395
Fair value of derivative liabilities, gross	336	88
Economic hedges [Member] \| Credit contracts [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	40	290
Fair value derivative assets, gross	13	7
Fair value of derivative liabilities, gross	0	0
Customer accommodation trading and other derivatives [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, gross	92,156	48,454
Fair value of derivative liabilities, gross	87,469	43,634
Customer accommodation trading and other derivatives [Member] \| Interest rate contracts [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	10,278,481	7,976,534
Fair value derivative assets, gross	43,682	20,286
Fair value of derivative liabilities, gross	46,094	17,435
Customer accommodation trading and other derivatives [Member] \| Commodity contracts [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	108,378	74,903
Fair value derivative assets, gross	10,015	5,939
Fair value of derivative liabilities, gross	5,461	2,414
Customer accommodation trading and other derivatives [Member] \| Equity contracts [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	409,739	321,863
Fair value derivative assets, gross	15,721	16,278
Fair value of derivative liabilities, gross	10,154	17,827
Customer accommodation trading and other derivatives [Member] \| Foreign exchange contracts [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	1,186,615	560,049
Fair value derivative assets, gross	22,689	5,912
Fair value of derivative liabilities, gross	25,725	5,915
Customer accommodation trading and other derivatives [Member] \| Credit contracts [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	44,558	38,318
Fair value derivative assets, gross	49	39
Fair value of derivative liabilities, gross	$ 35	$ 43

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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Fair value, after the 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 not elected to be offset.

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- Definition

Nominal or face amount used to calculate payment on derivative.

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Fair value of 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 offset against an obligation to return collateral.

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Total Notional Or Contractual Amounts And Fair Values For Derivatives Abstract.

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