Securities Financing Activities - Types of Financial Assets Pledged and Remaining Maturity (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	$ 688,549	$ 459,985
Securities loaned and other	63,109	52,142
Overnight and continuous
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	344,955	259,048
Securities loaned and other	59,993	49,610
Up to 30 days
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	206,101	102,941
Securities loaned and other	0	1,544
30 – 90 days
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	35,302	20,960
Securities loaned and other	6	0
Greater than 90 days
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	102,191	77,036
Securities loaned and other	3,110	988
Mortgage-backed securities, U.S. GSEs and government agencies
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	85,012	71,064
Securities loaned and other	0	0
Mortgage-backed securities, Residential - nonagency
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	2,487	2,292
Securities loaned and other	0	0
Mortgage-backed securities, Commercial - nonagency
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	2,142	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	343,191	216,467
Securities loaned and other	651	1,034
Obligations of U.S. states and municipalities
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	2,061	2,323
Securities loaned and other	0	0
Non-U.S. government debt
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	156,594	97,400
Securities loaned and other	1,251	1,455
Corporate debt securities
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	49,049	39,247
Securities loaned and other	1,785	2,025
Asset-backed securities
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	4,352	2,703
Securities loaned and other	0	0
Equity securities
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	43,661	25,820
Securities loaned and other	$ 59,422	$ 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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