Derivative Instruments - Derivatives Netting (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	$ 528,471	$ 677,461
Amounts netted on the Consolidated balance sheets	(488,206)	(627,924)
Net derivative receivables	40,265	49,537
Derivative receivables where an appropriate legal opinion has not been either sought or obtained	16,816	25,907
Total derivative receivables recognized on the Consolidated balance sheets, Gross derivate receivables	545,287	703,368
Total derivative receivables recognized on the Consolidated balance sheets, Net derivative receivables	57,081	75,444
Collateral not nettable on the Consolidated balance sheets, Net derivative receivables	(10,102)	(14,806)
Net amounts, Net derivative receivables	46,979	60,638
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	518,487	665,950
Amounts netted on the Consolidated balance sheets	(484,928)	(618,264)
Net derivative payables	33,559	47,686
Derivative payables where an appropriate legal opinion has not been either sought or obtained	16,557	22,937
Total derivative payables recognized on the Consolidated balance sheets, Gross derivative payables	535,044	688,887
Total derivative payables recognized on the Consolidated balance sheets, Net derivative payables	50,116	70,623
Collateral not nettable on the Consolidated balance sheets, Net derivative payables	(5,872)	(11,964)
Net amounts, Net derivative payables	44,244	58,659
Net cash collateral receivables	67,600	88,000
Netted cash collateral payables	64,300	78,400
Interest rate contracts
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	266,595	386,108
Amounts netted on the Consolidated balance sheets	(248,611)	(355,923)
Net derivative receivables	17,984	30,185
Total derivative receivables recognized on the Consolidated balance sheets, Gross derivate receivables	270,585	391,648
Total derivative receivables recognized on the Consolidated balance sheets, Net derivative receivables	21,974	35,725
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	239,563	352,282
Amounts netted on the Consolidated balance sheets	(232,537)	(340,975)
Net derivative payables	7,026	11,307
Total derivative payables recognized on the Consolidated balance sheets, Gross derivative payables	240,731	353,987
Total derivative payables recognized on the Consolidated balance sheets, Net derivative payables	8,194	13,012
Interest rate contracts | OTC
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	251,953	367,214
Amounts netted on the Consolidated balance sheets	(234,283)	(337,609)
Net derivative receivables	17,670	29,605
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	223,576	332,214
Amounts netted on the Consolidated balance sheets	(216,757)	(321,140)
Net derivative payables	6,819	11,074
Interest rate contracts | OTC–cleared
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	14,144	18,340
Amounts netted on the Consolidated balance sheets	(13,839)	(17,919)
Net derivative receivables	305	421
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	15,695	19,710
Amounts netted on the Consolidated balance sheets	(15,492)	(19,494)
Net derivative payables	203	216
Interest rate contracts | Exchange-traded
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	498	554
Amounts netted on the Consolidated balance sheets	(489)	(395)
Net derivative receivables	9	159
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	292	358
Amounts netted on the Consolidated balance sheets	(288)	(341)
Net derivative payables	4	17
Credit contracts
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	9,706	13,220
Amounts netted on the Consolidated balance sheets	(8,808)	(12,665)
Net derivative receivables	898	555
Total derivative receivables recognized on the Consolidated balance sheets, Gross derivate receivables	9,839	13,345
Total derivative receivables recognized on the Consolidated balance sheets, Net derivative receivables	1,031	680
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	10,700	14,386
Amounts netted on the Consolidated balance sheets	(10,032)	(12,837)
Net derivative payables	668	1,549
Total derivative payables recognized on the Consolidated balance sheets, Gross derivative payables	10,912	14,832
Total derivative payables recognized on the Consolidated balance sheets, Net derivative payables	880	1,995
Credit contracts | OTC
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	8,035	8,894
Amounts netted on the Consolidated balance sheets	(7,177)	(8,356)
Net derivative receivables	858	538
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	9,021	10,311
Amounts netted on the Consolidated balance sheets	(8,421)	(8,781)
Net derivative payables	600	1,530
Credit contracts | OTC–cleared
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	1,671	4,326
Amounts netted on the Consolidated balance sheets	(1,631)	(4,309)
Net derivative receivables	40	17
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	1,679	4,075
Amounts netted on the Consolidated balance sheets	(1,611)	(4,056)
Net derivative payables	68	19
Foreign exchange contracts
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	166,980	202,218
Amounts netted on the Consolidated balance sheets	(156,954)	(190,479)
Net derivative receivables	10,026	11,739
Total derivative receivables recognized on the Consolidated balance sheets, Gross derivate receivables	169,579	206,260
Total derivative receivables recognized on the Consolidated balance sheets, Net derivative receivables	12,625	15,781
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	172,323	211,673
Amounts netted on the Consolidated balance sheets	(161,649)	(194,493)
Net derivative payables	10,674	17,180
Total derivative payables recognized on the Consolidated balance sheets, Gross derivative payables	175,746	215,926
Total derivative payables recognized on the Consolidated balance sheets, Net derivative payables	14,097	21,433
Foreign exchange contracts | OTC
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	166,185	201,349
Amounts netted on the Consolidated balance sheets	(156,251)	(189,655)
Net derivative receivables	9,934	11,694
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	171,610	210,803
Amounts netted on the Consolidated balance sheets	(160,946)	(193,672)
Net derivative payables	10,664	17,131
Foreign exchange contracts | OTC–cleared
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	789	834
Amounts netted on the Consolidated balance sheets	(703)	(819)
Net derivative receivables	86	15
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	706	836
Amounts netted on the Consolidated balance sheets	(703)	(819)
Net derivative payables	3	17
Foreign exchange contracts | Exchange-traded
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	6	35
Amounts netted on the Consolidated balance sheets	0	(5)
Net derivative receivables	6	30
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	7	34
Amounts netted on the Consolidated balance sheets	0	(2)
Net derivative payables	7	32
Equity contracts
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	61,799	58,138
Amounts netted on the Consolidated balance sheets	(58,650)	(54,125)
Net derivative receivables	3,149	4,013
Total derivative receivables recognized on the Consolidated balance sheets, Gross derivate receivables	68,631	70,612
Total derivative receivables recognized on the Consolidated balance sheets, Net derivative receivables	9,981	16,487
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	72,000	69,821
Amounts netted on the Consolidated balance sheets	(62,494)	(55,515)
Net derivative payables	9,506	14,306
Total derivative payables recognized on the Consolidated balance sheets, Gross derivative payables	79,727	81,413
Total derivative payables recognized on the Consolidated balance sheets, Net derivative payables	17,233	25,898
Equity contracts | OTC
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	25,704	29,844
Amounts netted on the Consolidated balance sheets	(23,977)	(27,374)
Net derivative receivables	1,727	2,470
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	31,379	35,330
Amounts netted on the Consolidated balance sheets	(27,830)	(28,763)
Net derivative payables	3,549	6,567
Equity contracts | Exchange-traded
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	36,095	28,294
Amounts netted on the Consolidated balance sheets	(34,673)	(26,751)
Net derivative receivables	1,422	1,543
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	40,621	34,491
Amounts netted on the Consolidated balance sheets	(34,664)	(26,752)
Net derivative payables	5,957	7,739
Commodity contracts
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	23,391	17,777
Amounts netted on the Consolidated balance sheets	(15,183)	(14,732)
Net derivative receivables	8,208	3,045
Total derivative receivables recognized on the Consolidated balance sheets, Gross derivate receivables	26,653	21,503
Total derivative receivables recognized on the Consolidated balance sheets, Net derivative receivables	11,470	6,771
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	23,901	17,788
Amounts netted on the Consolidated balance sheets	(18,216)	(14,444)
Net derivative payables	5,685	3,344
Total derivative payables recognized on the Consolidated balance sheets, Gross derivative payables	27,928	22,729
Total derivative payables recognized on the Consolidated balance sheets, Net derivative payables	9,712	8,285
Commodity contracts | OTC
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	15,063	10,924
Amounts netted on the Consolidated balance sheets	(6,868)	(7,901)
Net derivative receivables	8,195	3,023
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	14,874	10,365
Amounts netted on the Consolidated balance sheets	(9,667)	(7,544)
Net derivative payables	5,207	2,821
Commodity contracts | OTC–cleared
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	49	20
Amounts netted on the Consolidated balance sheets	(49)	(20)
Net derivative receivables	0	0
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	73	32
Amounts netted on the Consolidated balance sheets	(73)	(32)
Net derivative payables	0	0
Commodity contracts | Exchange-traded
Gross and Net Derivative Receivables by Contract and Settlement Type:
Gross derivative receivables	8,279	6,833
Amounts netted on the Consolidated balance sheets	(8,266)	(6,811)
Net derivative receivables	13	22
Gross and Net Derivative Payables by Contract and Settlement Type:
Gross derivative payables	8,954	7,391
Amounts netted on the Consolidated balance sheets	(8,476)	(6,868)
Net derivative payables	$ 478	$ 523