Variable Interest Entities and Securitization Activities - Assets and Liabilities by Balance Sheet Caption (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 127,725	$ 105,654
Trading assets at fair value	294,869	312,738
Investment securities	182,712	184,803
Securities purchased under agreements to resell	119,999	116,234
Customer and other receivables	96,018	97,737
Intangible assets	8,360	4,980
Other assets	23,491	21,742
Total assets	1,188,140	1,115,862
Liabilities
Other secured financings	5,133	11,701
Other liabilities and accrued expenses	29,300	25,603
Total liabilities	1,081,542	1,012,713
Noncontrolling interests	1,157	1,368
Variable Interest Entity, Primary Beneficiary
Assets
Cash and cash equivalents	341	269
Trading assets at fair value	1,965	1,445
Investment securities	37	0
Securities purchased under agreements to resell	200	0
Customer and other receivables	31	23
Intangible assets	85	98
Other assets	253	283
Total assets	2,912	2,118
Liabilities
Other secured financings	767	366
Other liabilities and accrued expenses	261	48
Total liabilities	1,028	414
Noncontrolling interests	$ 115	$ 196