Securities Financing Activities - Types of Financial Assets Pledged and Remaining Maturity (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	$ 595,265	$ 459,985
Securities loaned and other	58,708	52,142
Overnight and continuous
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	270,443	259,048
Securities loaned and other	57,204	49,610
Up to 30 days
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	193,549	102,941
Securities loaned and other	292	1,544
30 – 90 days
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	43,467	20,960
Securities loaned and other	2	0
Greater than 90 days
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	87,806	77,036
Securities loaned and other	1,210	988
Mortgage-backed securities, U.S. GSEs and government agencies
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	71,065	71,064
Securities loaned and other	0	0
Mortgage-backed securities, Residential - nonagency
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	2,233	2,292
Securities loaned and other	0	0
Mortgage-backed securities, Commercial - nonagency
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	2,357	2,669
Securities loaned and other	0	0
U.S. Treasury, GSEs and government agencies
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	300,105	216,467
Securities loaned and other	809	1,034
Obligations of U.S. states and municipalities
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	2,189	2,323
Securities loaned and other	0	0
Non-U.S. government debt
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	134,763	97,400
Securities loaned and other	2,682	1,455
Corporate debt securities
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	41,765	39,247
Securities loaned and other	2,437	2,025
Asset-backed securities
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	4,181	2,703
Securities loaned and other	0	0
Equity securities
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	36,607	25,820
Securities loaned and other	$ 52,780	$ 47,628

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- Definition

Amount, before effects of master netting arrangements, of securities loaned to entities in exchange for collateral. Includes liabilities not subject to a master netting arrangement and elected not to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483466/210-20-50-3

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Amount, before effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and elected not to be offset.

+ References

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