Collateralized Transactions - Offsetting of Certain Collateralized Transactions (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Securities purchased under agreements to resell
Gross Amounts	$ 230,176	$ 197,486
Amounts Offset	(109,441)	(77,487)
Balance Sheet Net Amounts	120,735	119,999
Amounts not offset	(117,865)	(106,896)
Net Amounts	2,870	13,103
Securities borrowed
Gross Amounts	151,152	139,395
Amounts Offset	(12,644)	(9,682)
Balance Sheet Net Amounts	138,508	129,713
Amounts not offset	(132,191)	(124,028)
Net Amounts	6,317	5,685
Securities sold under agreements to repurchase
Gross Amounts	175,620	139,675
Amounts Offset	(109,441)	(77,487)
Balance Sheet Net Amounts	66,179	62,188
Amounts not offset	(62,302)	(53,692)
Net Amounts	3,877	8,496
Securities loaned
Gross Amounts	26,429	21,981
Amounts Offset	(12,644)	(9,682)
Balance Sheet Net Amounts	13,785	12,299
Amounts not offset	(13,475)	(12,019)
Net Amounts	310	280
Net amounts for which master netting agreements are not in place or may not be legally enforceable
Securities purchased under agreements to resell	2,470	12,514
Securities borrowed	493	1,041
Securities sold under agreements to repurchase	3,366	8,295
Securities loaned	$ 160	$ 139