Collateralized Transactions - Offsetting of Certain Collateralized Transactions (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Securities purchased under agreements to resell
Gross Amounts	$ 207,180	$ 197,486
Amounts Offset	(96,056)	(77,487)
Balance Sheet Net Amounts	111,124	119,999
Amounts not offset	(106,215)	(106,896)
Net Amounts	4,909	13,103
Securities borrowed
Gross Amounts	148,654	139,395
Amounts Offset	(12,176)	(9,682)
Balance Sheet Net Amounts	136,478	129,713
Amounts not offset	(130,579)	(124,028)
Net Amounts	5,899	5,685
Securities sold under agreements to repurchase
Gross Amounts	156,189	139,675
Amounts Offset	(96,056)	(77,487)
Balance Sheet Net Amounts	60,133	62,188
Amounts not offset	(55,748)	(53,692)
Net Amounts	4,385	8,496
Securities loaned
Gross Amounts	25,273	21,981
Amounts Offset	(12,176)	(9,682)
Balance Sheet Net Amounts	13,097	12,299
Amounts not offset	(12,664)	(12,019)
Net Amounts	433	280
Net amounts for which master netting agreements are not in place or may not be legally enforceable
Securities purchased under agreements to resell	2,773	12,514
Securities borrowed	820	1,041
Securities sold under agreements to repurchase	3,162	8,295
Securities loaned	$ 262	$ 139