Offsetting Arrangements - Liabilities With Offsetting Arrangements (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Offsetting Liabilities [Line Items]
Derivatives, Gross amounts of recognized liabilities	$ 21,507	$ 16,126
Derivatives, Gross amounts offset in statement of condition	(13,888)	(10,395)
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	7,619	5,731
Derivative, Net Amount	6,043	4,742
Derivative liability, collateral, cash offset	(1,488)	(1,282)
Derivatives, Cash and collateral securities netting, Cash and Securities Provided	(1,576)	(989)
Derivatives, Cash and collateral securities netting, Net	(3,064)	(2,271)
Resale agreements and securities lending, Gross Amounts of Recognized Liabilities	91,432	82,674
Resale agreements and securities lending, Gross Amounts Offset in Statement of Condition	(81,779)	(77,063)
Resale agreements and securities lending, Net Amounts of Liabilities Presented in Statement of Condition	9,653	5,611
Resale agreements and securities lending, Cash and Securities Provided	(8,732)	(4,066)
Resale agreements and securities lending, Net Amount	921	1,545
Total derivatives and other financial instruments, Gross Amounts of Recognized Liabilities	112,939	98,800
Total derivatives and other financial instruments, Gross Amounts Offset in Statement of Condition	(95,667)	(87,458)
Total derivatives and other financial instruments, Net Amounts of Liabilities Presented in Statement of Condition	17,272	11,342
Total derivatives and other financial instruments, Cash and Securities Provided	(10,308)	(5,055)
Total derivatives and other financial instruments, Net Amount	6,964	6,287
Securities sold under repurchase agreements	4,277	1,575
Foreign exchange contracts
Offsetting Liabilities [Line Items]
Derivatives, Gross amounts of recognized liabilities	21,208	15,825
Derivatives, Gross amounts offset in statement of condition	(12,400)	(9,113)
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	8,808	6,712
Derivative, Net Amount	8,808	6,712
Interest rate contracts
Offsetting Liabilities [Line Items]
Derivatives, Gross amounts of recognized liabilities	0	0
Derivatives, Gross amounts offset in statement of condition	0	0
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	0	0
Derivative, Net Amount	0	0
Other derivative contracts
Offsetting Liabilities [Line Items]
Derivatives, Gross amounts of recognized liabilities	299	301
Derivatives, Gross amounts offset in statement of condition	0	0
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	299	301
Derivative, Net Amount	299	301
Accrued expenses and other liabilities
Offsetting Liabilities [Line Items]
Cash collateral received in connection to securities finance activities	$ 5,380	$ 4,040