Variable Interest Entities and Securitization Activities - Assets and Liabilities by Balance Sheet Caption (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Assets
Cash and cash equivalents	$ 136,086	$ 127,725
Trading assets at fair value	296,881	294,869
Investment securities	166,130	182,712
Securities purchased under agreements to resell	127,767	119,999
Customer and other receivables	94,804	96,018
Intangible assets	8,244	8,360
Other assets	23,578	23,491
Total assets	1,222,233	1,188,140
Liabilities
Other secured financings	8,808	10,041
Other liabilities and accrued expenses	24,214	29,300
Total liabilities	1,118,158	1,081,542
Noncontrolling interests	1,174	1,157
Variable Interest Entity, Primary Beneficiary
Assets
Cash and cash equivalents	334	341
Trading assets at fair value	2,252	1,965
Investment securities	34	37
Securities purchased under agreements to resell	200	200
Customer and other receivables	26	31
Intangible assets	82	85
Other assets	245	253
Total assets	3,173	2,912
Liabilities
Other secured financings	963	767
Other liabilities and accrued expenses	174	261
Total liabilities	1,137	1,028
Noncontrolling interests	$ 119	$ 115