Securities Financing Activities - Types of Financial Assets Pledged and Remaining Maturity (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	$ 608,618	$ 541,587
Securities loaned and other	34,104	33,700
Overnight and continuous
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	336,082	247,579
Securities loaned and other	30,172	28,402
Up to 30 days
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	132,662	174,971
Securities loaned and other	231	997
30 – 90 days
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	53,504	71,637
Securities loaned and other	748	2,132
Greater than 90 days
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	86,370	47,400
Securities loaned and other	2,953	2,169
Mortgage-backed securities, U.S. GSEs and government agencies
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	33,399	34,311
Securities loaned and other	0	0
Mortgage-backed securities, Residential - nonagency
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	1,804	2,165
Securities loaned and other	0	0
Mortgage-backed securities, Commercial - nonagency
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	1,778	1,390
Securities loaned and other	0	0
U.S. Treasury, GSEs and government agencies
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	366,820	317,578
Securities loaned and other	8	69
Obligations of U.S. states and municipalities
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	1,400	1,150
Securities loaned and other	0	0
Non-U.S. government debt
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	165,568	154,900
Securities loaned and other	1,769	4,313
Corporate debt securities
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	13,067	13,898
Securities loaned and other	1,361	428
Asset-backed securities
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	1,746	3,867
Securities loaned and other	0	0
Equity securities
Securities Financing Transaction [Line Items]
Securities sold under repurchase agreements	23,036	12,328
Securities loaned and other	$ 30,966	$ 28,890

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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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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