Derivative Instruments - Derivatives Netting (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	$ 599,310	$ 658,609
Amounts netted on the Consolidated balance sheets	(548,605)	(604,620)
Net derivative receivables	50,705	53,989
Derivative receivables where an appropriate legal opinion has not been either sought or obtained	7,072	6,978
Total derivative receivables recognized on the Consolidated balance sheets, Gross derivate receivables	606,382	665,587
Total derivative receivables recognized on the Consolidated balance sheets, Net derivative receivables	57,777	60,967
Collateral not nettable on the Consolidated balance sheets, Net derivative receivables	(28,891)	(28,160)
Net amounts, Net derivative receivables	28,886	32,807
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	589,018	645,095
Amounts netted on the Consolidated balance sheets	(550,409)	(613,557)
Net derivative payables	38,609	31,538
Derivative payables where an appropriate legal opinion has not been either sought or obtained	$ 7,720	$ 8,123
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Trading Liabilities	Trading Liabilities
Total derivative payables recognized on the Consolidated balance sheets, Gross derivative payables	$ 596,738	$ 653,218
Total derivative payables recognized on the Consolidated balance sheets, Net derivative payables	46,329	39,661
Collateral not nettable on the Consolidated balance sheets, Net derivative payables	(18,478)	(10,163)
Net amounts, Net derivative payables	27,851	29,498
Net cash collateral receivables	54,700	51,900
Netted cash collateral payables	56,500	60,800
Interest rate contracts
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	280,805	289,381
Amounts netted on the Consolidated balance sheets	(256,483)	(265,789)
Net derivative receivables	24,322	23,592
Total derivative receivables recognized on the Consolidated balance sheets, Gross derivate receivables	281,884	290,734
Total derivative receivables recognized on the Consolidated balance sheets, Net derivative receivables	25,401	24,945
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	256,851	273,133
Amounts netted on the Consolidated balance sheets	(250,122)	(264,989)
Net derivative payables	6,729	8,144
Total derivative payables recognized on the Consolidated balance sheets, Gross derivative payables	257,583	274,228
Total derivative payables recognized on the Consolidated balance sheets, Net derivative payables	7,461	9,239
Interest rate contracts | Over-the-counter (“OTC”)
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	162,300	158,202
Amounts netted on the Consolidated balance sheets	(138,107)	(134,791)
Net derivative receivables	24,193	23,411
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	135,045	138,215
Amounts netted on the Consolidated balance sheets	(128,464)	(130,375)
Net derivative payables	6,581	7,840
Interest rate contracts | OTC–cleared
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	118,377	130,989
Amounts netted on the Consolidated balance sheets	(118,303)	(130,810)
Net derivative receivables	74	179
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	121,702	134,555
Amounts netted on the Consolidated balance sheets	(121,557)	(134,262)
Net derivative payables	145	293
Interest rate contracts | Exchange-traded
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	128	190
Amounts netted on the Consolidated balance sheets	(73)	(188)
Net derivative receivables	55	2
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	104	363
Amounts netted on the Consolidated balance sheets	(101)	(352)
Net derivative payables	3	11
Credit contracts
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	12,956	10,947
Amounts netted on the Consolidated balance sheets	(12,545)	(10,273)
Net derivative receivables	411	674
Total derivative receivables recognized on the Consolidated balance sheets, Gross derivate receivables	13,024	11,087
Total derivative receivables recognized on the Consolidated balance sheets, Net derivative receivables	479	814
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	17,294	13,160
Amounts netted on the Consolidated balance sheets	(15,612)	(11,898)
Net derivative payables	1,682	1,262
Total derivative payables recognized on the Consolidated balance sheets, Gross derivative payables	17,628	13,796
Total derivative payables recognized on the Consolidated balance sheets, Net derivative payables	2,016	1,898
Credit contracts | Over-the-counter (“OTC”)
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	9,723	8,680
Amounts netted on the Consolidated balance sheets	(9,433)	(8,030)
Net derivative receivables	290	650
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	14,848	11,381
Amounts netted on the Consolidated balance sheets	(13,196)	(10,133)
Net derivative payables	1,652	1,248
Credit contracts | OTC–cleared
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	3,233	2,267
Amounts netted on the Consolidated balance sheets	(3,112)	(2,243)
Net derivative receivables	121	24
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	2,446	1,779
Amounts netted on the Consolidated balance sheets	(2,416)	(1,765)
Net derivative payables	30	14
Foreign exchange contracts
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	181,045	260,327
Amounts netted on the Consolidated balance sheets	(163,881)	(237,608)
Net derivative receivables	17,164	22,719
Total derivative receivables recognized on the Consolidated balance sheets, Gross derivate receivables	183,236	262,920
Total derivative receivables recognized on the Consolidated balance sheets, Net derivative receivables	19,355	25,312
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	176,391	252,646
Amounts netted on the Consolidated balance sheets	(163,308)	(238,970)
Net derivative payables	13,083	13,676
Total derivative payables recognized on the Consolidated balance sheets, Gross derivative payables	178,141	254,567
Total derivative payables recognized on the Consolidated balance sheets, Net derivative payables	14,833	15,597
Foreign exchange contracts | Over-the-counter (“OTC”)
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	180,120	259,608
Amounts netted on the Consolidated balance sheets	(163,029)	(236,931)
Net derivative receivables	17,091	22,677
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	175,485	251,860
Amounts netted on the Consolidated balance sheets	(162,455)	(238,292)
Net derivative payables	13,030	13,568
Foreign exchange contracts | OTC–cleared
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	904	685
Amounts netted on the Consolidated balance sheets	(849)	(677)
Net derivative receivables	55	8
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	897	772
Amounts netted on the Consolidated balance sheets	(850)	(678)
Net derivative payables	47	94
Foreign exchange contracts | Exchange-traded
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	21	34
Amounts netted on the Consolidated balance sheets	(3)	0
Net derivative receivables	18	34
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	9	14
Amounts netted on the Consolidated balance sheets	(3)	0
Net derivative payables	6	14
Equity contracts
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	96,586	84,309
Amounts netted on the Consolidated balance sheets	(91,856)	(79,935)
Net derivative receivables	4,730	4,374
Total derivative receivables recognized on the Consolidated balance sheets, Gross derivate receivables	97,723	85,220
Total derivative receivables recognized on the Consolidated balance sheets, Net derivative receivables	5,867	5,285
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	114,893	93,972
Amounts netted on the Consolidated balance sheets	(102,211)	(87,491)
Net derivative payables	12,682	6,481
Total derivative payables recognized on the Consolidated balance sheets, Gross derivative payables	117,017	96,139
Total derivative payables recognized on the Consolidated balance sheets, Net derivative payables	14,806	8,648
Equity contracts | Over-the-counter (“OTC”)
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	33,418	33,269
Amounts netted on the Consolidated balance sheets	(31,170)	(30,742)
Net derivative receivables	2,248	2,527
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	53,530	44,394
Amounts netted on the Consolidated balance sheets	(41,552)	(38,298)
Net derivative payables	11,978	6,096
Equity contracts | Exchange-traded
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	63,168	51,040
Amounts netted on the Consolidated balance sheets	(60,686)	(49,193)
Net derivative receivables	2,482	1,847
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	61,363	49,578
Amounts netted on the Consolidated balance sheets	(60,659)	(49,193)
Net derivative payables	704	385
Commodity contracts
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	27,918	13,645
Amounts netted on the Consolidated balance sheets	(23,840)	(11,015)
Net derivative receivables	4,078	2,630
Total derivative receivables recognized on the Consolidated balance sheets, Gross derivate receivables	30,515	15,626
Total derivative receivables recognized on the Consolidated balance sheets, Net derivative receivables	6,675	4,611
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	23,589	12,184
Amounts netted on the Consolidated balance sheets	(19,156)	(10,209)
Net derivative payables	4,433	1,975
Total derivative payables recognized on the Consolidated balance sheets, Gross derivative payables	26,369	14,488
Total derivative payables recognized on the Consolidated balance sheets, Net derivative payables	7,213	4,279
Commodity contracts | Over-the-counter (“OTC”)
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	18,244	8,340
Amounts netted on the Consolidated balance sheets	(14,469)	(5,848)
Net derivative receivables	3,775	2,492
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	14,176	6,918
Amounts netted on the Consolidated balance sheets	(9,786)	(5,206)
Net derivative payables	4,390	1,712
Commodity contracts | OTC–cleared
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	109	126
Amounts netted on the Consolidated balance sheets	(79)	(84)
Net derivative receivables	30	42
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	79	84
Amounts netted on the Consolidated balance sheets	(79)	(84)
Net derivative payables	0	0
Commodity contracts | Exchange-traded
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	9,565	5,179
Amounts netted on the Consolidated balance sheets	(9,292)	(5,083)
Net derivative receivables	273	96
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	9,334	5,182
Amounts netted on the Consolidated balance sheets	(9,291)	(4,919)
Net derivative payables	$ 43	$ 263