Derivative Instruments - Impact on Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Gross derivative receivables	$ 665,587	$ 539,248
Net derivative receivables	60,967	54,864
Gross derivative payables	653,218	546,972
Net derivative payables	39,661	40,847
Interest rate
Derivatives, Fair Value [Line Items]
Gross derivative receivables	290,734	250,691
Net derivative receivables	24,945	26,324
Gross derivative payables	274,228	240,482
Net derivative payables	9,239	11,896
Credit
Derivatives, Fair Value [Line Items]
Gross derivative receivables	11,087	9,654
Net derivative receivables	814	551
Gross derivative payables	13,796	12,038
Net derivative payables	1,898	1,089
Foreign exchange
Derivatives, Fair Value [Line Items]
Gross derivative receivables	262,920	205,775
Net derivative receivables	25,312	18,019
Gross derivative payables	254,567	212,263
Net derivative payables	15,597	12,620
Equity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	85,220	57,689
Net derivative receivables	5,285	4,928
Gross derivative payables	96,139	65,811
Net derivative payables	8,648	9,368
Commodity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	15,626	15,439
Net derivative receivables	4,611	5,042
Gross derivative payables	14,488	16,378
Net derivative payables	4,279	5,874
Not designated as hedges
Derivatives, Fair Value [Line Items]
Gross derivative receivables	663,566	538,270
Gross derivative payables	651,865	545,240
Not designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Gross derivative receivables	290,734	250,689
Gross derivative payables	274,226	240,482
Not designated as hedges | Credit
Derivatives, Fair Value [Line Items]
Gross derivative receivables	11,087	9,654
Gross derivative payables	13,796	12,038
Not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Gross derivative receivables	261,035	205,010
Gross derivative payables	253,289	210,623
Not designated as hedges | Equity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	85,220	57,689
Gross derivative payables	96,139	65,811
Not designated as hedges | Commodity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	15,490	15,228
Gross derivative payables	14,415	16,286
Designated as hedges
Derivatives, Fair Value [Line Items]
Gross derivative receivables	2,021	978
Gross derivative payables	1,353	1,732
Designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Gross derivative receivables	0	2
Gross derivative payables	2	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	1,885	765
Gross derivative payables	1,278	1,640
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	136	211
Gross derivative payables	$ 73	$ 92