Derivative Instruments - Impact on Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Gross derivative receivables	$ 615,651	$ 545,287
Net derivative receivables	73,636	57,081
Gross derivative payables	591,844	535,044
Net derivative payables	57,803	50,116
Interest rate
Derivatives, Fair Value [Line Items]
Gross derivative receivables	261,809	270,585
Net derivative receivables	23,318	21,974
Gross derivative payables	236,562	240,731
Net derivative payables	11,530	8,194
Credit
Derivatives, Fair Value [Line Items]
Gross derivative receivables	12,605	9,839
Net derivative receivables	1,375	1,031
Gross derivative payables	11,851	10,912
Net derivative payables	799	880
Foreign exchange
Derivatives, Fair Value [Line Items]
Gross derivative receivables	210,845	169,579
Net derivative receivables	19,503	12,625
Gross derivative payables	208,728	175,746
Net derivative payables	15,661	14,097
Equity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	72,870	68,631
Net derivative receivables	8,642	9,981
Gross derivative payables	81,027	79,727
Net derivative payables	15,817	17,233
Commodity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	57,522	26,653
Net derivative receivables	20,798	11,470
Gross derivative payables	53,676	27,928
Net derivative payables	13,996	9,712
Not designated as hedges
Derivatives, Fair Value [Line Items]
Gross derivative receivables	610,671	539,451
Gross derivative payables	584,132	526,829
Not designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Gross derivative receivables	261,796	270,562
Gross derivative payables	236,562	240,731
Not designated as hedges | Credit
Derivatives, Fair Value [Line Items]
Gross derivative receivables	12,605	9,839
Gross derivative payables	11,851	10,912
Not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Gross derivative receivables	210,358	169,186
Gross derivative payables	207,071	174,622
Not designated as hedges | Equity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	72,870	68,631
Gross derivative payables	81,027	79,727
Not designated as hedges | Commodity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	53,042	21,233
Gross derivative payables	47,621	20,837
Designated as hedges
Derivatives, Fair Value [Line Items]
Gross derivative receivables	4,980	5,836
Gross derivative payables	7,712	8,215
Designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Gross derivative receivables	13	23
Gross derivative payables	0	0
Designated as hedges | Credit
Derivatives, Fair Value [Line Items]
Gross derivative receivables	0	0
Gross derivative payables	0	0
Designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Gross derivative receivables	487	393
Gross derivative payables	1,657	1,124
Designated as hedges | Equity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	0	0
Gross derivative payables	0	0
Designated as hedges | Commodity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	4,480	5,420
Gross derivative payables	$ 6,055	$ 7,091