Offsetting Arrangements - Liabilities With Offsetting Arrangements (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Offsetting Liabilities [Line Items]
Derivatives, gross amounts of recognized liabilities	$ 20,589	$ 19,602
Derivatives, gross amounts offset in statement of condition	(13,538)	(11,909)
Net Amounts of Liabilities Presented in Statement of Condition	7,051	7,693
Derivative, net amount	6,420	7,060
Derivative liability, collateral, cash offset	(1,537)	(1,413)
Derivatives, cash and collateral securities netting, cash and securities provided	(631)	(633)
Derivatives, cash and collateral securities netting, net	(2,168)	(2,046)
Resale agreements and securities lending, gross amounts of recognized liabilities	245,493	214,362
Resale agreements and securities lending, gross amounts offset in statement of condition	(228,907)	(200,561)
Resale agreements and securities lending, net amounts of liabilities presented in statement of condition	16,586	13,801
Resale agreements and securities lending, cash and securities provided	(16,395)	(13,306)
Resale agreements and securities lending, net amount	191	495
Total derivatives and other financial instruments, gross amounts of recognized liabilities	266,082	233,964
Total derivatives and other financial instruments, gross amounts offset in statement of condition	(242,445)	(212,470)
Total derivatives and other financial instruments, net amounts of liabilities presented in statement of condition	23,637	21,494
Total derivatives and other financial instruments, cash and securities provided	(17,026)	(13,939)
Total derivatives and other financial instruments, net amount	6,611	7,555
Securities sold under repurchase agreements	2,119	1,867
Foreign exchange contracts
Offsetting Liabilities [Line Items]
Derivatives, gross amounts of recognized liabilities	20,431	19,416
Derivatives, gross amounts offset in statement of condition	(12,000)	(10,496)
Net Amounts of Liabilities Presented in Statement of Condition	8,431	8,920
Derivative, net amount	8,431	8,920
Interest rate contracts
Offsetting Liabilities [Line Items]
Derivatives, gross amounts of recognized liabilities	1	4
Derivatives, gross amounts offset in statement of condition	(1)	0
Net Amounts of Liabilities Presented in Statement of Condition	0	4
Derivative, net amount	0	4
Other derivative contracts
Offsetting Liabilities [Line Items]
Derivatives, gross amounts of recognized liabilities	157	182
Derivatives, gross amounts offset in statement of condition	0	0
Net Amounts of Liabilities Presented in Statement of Condition	157	182
Derivative, net amount	157	182
Accrued expenses and other liabilities
Offsetting Liabilities [Line Items]
Cash collateral received in connection to securities finance activities	$ 14,470	$ 11,930