Derivative Instruments - Impact on Balance Sheet (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Gross derivative receivables	$ 653,506	$ 545,287
Net derivative receivables	81,317	57,081
Gross derivative payables	627,529	535,044
Net derivative payables	52,417	50,116
Interest rate
Derivatives, Fair Value [Line Items]
Gross derivative receivables	253,144	270,585
Net derivative receivables	21,930	21,974
Gross derivative payables	237,212	240,731
Net derivative payables	11,525	8,194
Credit
Derivatives, Fair Value [Line Items]
Gross derivative receivables	13,578	9,839
Net derivative receivables	1,607	1,031
Gross derivative payables	11,323	10,912
Net derivative payables	890	880
Foreign exchange
Derivatives, Fair Value [Line Items]
Gross derivative receivables	261,854	169,579
Net derivative receivables	28,166	12,625
Gross derivative payables	259,286	175,746
Net derivative payables	19,241	14,097
Equity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	76,181	68,631
Net derivative receivables	10,177	9,981
Gross derivative payables	76,719	79,727
Net derivative payables	10,164	17,233
Commodity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	48,749	26,653
Net derivative receivables	19,437	11,470
Gross derivative payables	42,989	27,928
Net derivative payables	10,597	9,712
Not designated as hedges
Derivatives, Fair Value [Line Items]
Gross derivative receivables	645,465	539,451
Gross derivative payables	618,792	526,829
Not designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Gross derivative receivables	253,143	270,562
Gross derivative payables	237,212	240,731
Not designated as hedges | Credit
Derivatives, Fair Value [Line Items]
Gross derivative receivables	13,578	9,839
Gross derivative payables	11,323	10,912
Not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Gross derivative receivables	260,546	169,186
Gross derivative payables	258,320	174,622
Not designated as hedges | Equity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	76,181	68,631
Gross derivative payables	76,719	79,727
Not designated as hedges | Commodity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	42,017	21,233
Gross derivative payables	35,218	20,837
Designated as hedges
Derivatives, Fair Value [Line Items]
Gross derivative receivables	8,041	5,836
Gross derivative payables	8,737	8,215
Designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Gross derivative receivables	1	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	1,308	393
Gross derivative payables	966	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	6,732	5,420
Gross derivative payables	$ 7,771	$ 7,091