Offsetting Arrangements - Assets With Offsetting Arrangements (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Offsetting Assets [Line Items]
Derivatives, Gross Amounts of Recognized Assets	$ 23,644	$ 15,187
Derivatives, Gross Amounts Offset in Statement of Condition	(14,168)	(11,079)
Derivatives, Net Amounts of Assets Presented in Statement of Condition	9,476	4,108
Derivatives, Net Amount	8,442	3,385
Derivatives, Cash collateral and securities netting, cash offset	(1,727)	(1,966)
Derivatives, Cash collateral and securities netting, Cash and Securities Received	(1,034)	(723)
Derivatives, Cash collateral and securities netting, Net Amount	(2,761)	(2,689)
Resale agreements and securities borrowing, Gross Amounts of Recognized Assets	100,778	102,375
Resale agreements and securities borrowing, Gross Amounts Offset in Statement of Condition	(77,381)	(77,063)
Resale agreements and securities borrowing, Net Amounts of Assets Presented in Statement of Condition	23,397	25,312
Resale agreements and securities borrowing, Cash and Securities Received	(22,608)	(25,096)
Resale agreements and securities borrowing, Net Amount	789	216
Total derivatives and other financial instruments, Gross Amounts of Recognized Assets	124,422	117,562
Total derivatives and other financial instruments, Gross Amounts Offset in Statement of Condition	(91,549)	(88,142)
Total derivatives and other financial instruments, Net Amounts of Assets Presented in Statement of Condition	32,873	29,420
Total derivatives and other financial instruments, Cash and Securities Received	(23,642)	(25,819)
Total derivatives and other financial instruments, Net Amount	9,231	3,601
Securities purchased under resale agreements	5,203	3,012
Cash collateral provided for securities borrowing	18,200	22,300
Foreign exchange contracts
Offsetting Assets [Line Items]
Derivatives, Gross Amounts of Recognized Assets	23,633	15,185
Derivatives, Gross Amounts Offset in Statement of Condition	(12,441)	(9,113)
Derivatives, Net Amounts of Assets Presented in Statement of Condition	11,192	6,072
Derivatives, Net Amount	11,192	6,072
Interest rate contracts
Offsetting Assets [Line Items]
Derivatives, Gross Amounts of Recognized Assets	11	2
Derivatives, Gross Amounts Offset in Statement of Condition	0	0
Derivatives, Net Amounts of Assets Presented in Statement of Condition	11	2
Derivatives, Net Amount	$ 11	$ 2