FEDERAL FUNDS, SECURITIES BORROWED, LOANED AND SUBJECT TO REPURCHASE AGREEMENTS - Repurchase Agreements (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	$ 276,944	$ 253,514
Deposits received for securities loaned	18,141	11,678
Total	295,085	265,192
U.S. Treasury and federal agency securities
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	101,780	86,785
Deposits received for securities loaned	0	41
Total	101,780	86,826
State and municipal securities
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	1,644	2,605
Deposits received for securities loaned	0	0
Total	1,644	2,605
Foreign government
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	106,764	99,131
Deposits received for securities loaned	565	179
Total	107,329	99,310
Corporate bonds
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	22,264	21,719
Deposits received for securities loaned	660	749
Total	22,924	22,468
Equity securities
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	14,616	12,920
Deposits received for securities loaned	16,570	10,664
Total	31,186	23,584
Mortgage-backed securities
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	20,112	19,421
Deposits received for securities loaned	0	0
Total	20,112	19,421
Asset-backed securities
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	5,861	6,207
Deposits received for securities loaned	0	0
Total	5,861	6,207
Other
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	3,903	4,726
Deposits received for securities loaned	346	45
Total	4,249	4,771
Open and overnight
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	140,262	108,405
Deposits received for securities loaned	12,567	6,296
Total	152,829	114,701
Up to 30 days
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	60,664	70,850
Deposits received for securities loaned	459	774
Total	61,123	71,624
31–90 days
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	33,724	29,898
Deposits received for securities loaned	2,691	2,626
Total	36,415	32,524
Greater than 90 days
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	42,294	44,361
Deposits received for securities loaned	2,424	1,982
Total	$ 44,718	$ 46,343

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- Definition

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

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- Definition

Amount, before effects of master netting arrangements, of financial assets loaned to entities in exchange for collateral and funds outstanding borrowed in the form of a financial asset repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same financial assets at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 7
-Subparagraph (b)
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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.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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