Derivative Instruments - Impact on Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Derivatives, Fair Value [Line Items]
Gross derivative receivables	$ 606,382	$ 665,587
Net derivative receivables	57,777	60,967
Gross derivative payables	596,738	653,218
Net derivative payables	46,329	39,661
Interest rate
Derivatives, Fair Value [Line Items]
Gross derivative receivables	281,884	290,734
Net derivative receivables	25,401	24,945
Gross derivative payables	257,583	274,228
Net derivative payables	7,461	9,239
Credit
Derivatives, Fair Value [Line Items]
Gross derivative receivables	13,024	11,087
Net derivative receivables	479	814
Gross derivative payables	17,628	13,796
Net derivative payables	2,016	1,898
Foreign exchange
Derivatives, Fair Value [Line Items]
Gross derivative receivables	183,236	262,920
Net derivative receivables	19,355	25,312
Gross derivative payables	178,141	254,567
Net derivative payables	14,833	15,597
Equity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	97,723	85,220
Net derivative receivables	5,867	5,285
Gross derivative payables	117,017	96,139
Net derivative payables	14,806	8,648
Commodity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	30,515	15,626
Net derivative receivables	6,675	4,611
Gross derivative payables	26,369	14,488
Net derivative payables	7,213	4,279
Not designated as hedges
Derivatives, Fair Value [Line Items]
Gross derivative receivables	605,450	663,566
Gross derivative payables	594,129	651,865
Not designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Gross derivative receivables	281,884	290,734
Gross derivative payables	257,582	274,226
Not designated as hedges | Credit
Derivatives, Fair Value [Line Items]
Gross derivative receivables	13,024	11,087
Gross derivative payables	17,628	13,796
Not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Gross derivative receivables	182,887	261,035
Gross derivative payables	177,158	253,289
Not designated as hedges | Equity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	97,723	85,220
Gross derivative payables	117,017	96,139
Not designated as hedges | Commodity
Derivatives, Fair Value [Line Items]
Gross derivative receivables	29,932	15,490
Gross derivative payables	24,744	14,415
Designated as hedges
Derivatives, Fair Value [Line Items]
Gross derivative receivables	932	2,021
Gross derivative payables	2,609	1,353
Designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Gross derivative receivables	0	0
Gross derivative payables	1	2
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	349	1,885
Gross derivative payables	983	1,278
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	583	136
Gross derivative payables	$ 1,625	$ 73