FEDERAL FUNDS, SECURITIES BORROWED, LOANED AND SUBJECT TO REPURCHASE AGREEMENTS - Repurchase Agreements (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Assets Sold under Agreements to Repurchase
Repurchase agreements	$ 184,049	$ 170,496
Securities lending agreements	14,968	15,958
Gross amounts of recognized liabilities	199,017	186,454
U.S. Treasury and federal agency securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	67,821	66,263
Securities lending agreements	78	0
Gross amounts of recognized liabilities	67,899	66,263
State and municipal securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	794	334
Securities lending agreements	0	0
Gross amounts of recognized liabilities	794	334
Foreign government
Assets Sold under Agreements to Repurchase
Repurchase agreements	65,167	52,988
Securities lending agreements	1,145	1,390
Gross amounts of recognized liabilities	66,312	54,378
Corporate bonds
Assets Sold under Agreements to Repurchase
Repurchase agreements	19,098	17,164
Securities lending agreements	698	630
Gross amounts of recognized liabilities	19,796	17,794
Equity securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	10,756	12,206
Securities lending agreements	12,593	13,913
Gross amounts of recognized liabilities	23,349	26,119
Mortgage-backed securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	10,428	11,421
Securities lending agreements	0	0
Gross amounts of recognized liabilities	10,428	11,421
Asset-backed securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	6,016	5,428
Securities lending agreements	0	0
Gross amounts of recognized liabilities	6,016	5,428
Other
Assets Sold under Agreements to Repurchase
Repurchase agreements	3,969	4,692
Securities lending agreements	454	25
Gross amounts of recognized liabilities	4,423	4,717
Open and overnight
Assets Sold under Agreements to Repurchase
Repurchase agreements	82,260	79,740
Securities lending agreements	9,997	10,813
Gross amounts of recognized liabilities	92,257	90,553
Up to 30 days
Assets Sold under Agreements to Repurchase
Repurchase agreements	55,581	50,399
Securities lending agreements	1,274	2,169
Gross amounts of recognized liabilities	56,855	52,568
31–90 days
Assets Sold under Agreements to Repurchase
Repurchase agreements	20,438	19,396
Securities lending agreements	2,062	2,044
Gross amounts of recognized liabilities	22,500	21,440
Greater than 90 days
Assets Sold under Agreements to Repurchase
Repurchase agreements	25,770	20,961
Securities lending agreements	1,635	932
Gross amounts of recognized liabilities	$ 27,405	$ 21,893

Amount, before effects of master netting arrangements, of securities sold under agreements to repurchase and securities loaned.

No definition available.

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+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313

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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 elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Repurchase Agreement Accounted for as a Collateralized Borrowing
-URI http://asc.fasb.org/extlink&oid=49203159

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-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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