SECURITIES BORROWED, LOANED AND SUBJECT TO REPURCHASE AGREEMENTS - Repurchase Agreements (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	$ 339,022	$ 266,564
Deposits received for securities loaned	12,862	19,774
Total	351,884	286,338
U.S. Treasury and federal agency securities
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	142,676	100,781
Deposits received for securities loaned	1	27
Total	142,677	100,808
State and municipal securities
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	3,280	1,938
Deposits received for securities loaned	1	5
Total	3,281	1,943
Foreign government
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	110,459	95,880
Deposits received for securities loaned	280	272
Total	110,739	96,152
Corporate bonds
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	18,177	18,761
Deposits received for securities loaned	327	249
Total	18,504	19,010
Equity securities
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	8,034	12,010
Deposits received for securities loaned	12,135	19,069
Total	20,169	31,079
Mortgage-backed securities
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	38,102	28,458
Deposits received for securities loaned	0	0
Total	38,102	28,458
Asset-backed securities
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	4,792	4,873
Deposits received for securities loaned	0	0
Total	4,792	4,873
Other
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	13,502	3,863
Deposits received for securities loaned	118	152
Total	13,620	4,015
Open and overnight
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	173,961	108,534
Deposits received for securities loaned	9,189	15,758
Total	183,150	124,292
Up to 30 days
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	66,488	82,749
Deposits received for securities loaned	529	208
Total	67,017	82,957
31–90 days
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	54,421	35,108
Deposits received for securities loaned	1,712	1,789
Total	56,133	36,897
Greater than 90 days
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	44,153	40,173
Deposits received for securities loaned	1,432	2,019
Total	$ 45,585	$ 42,192

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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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-Publisher FASB
-Name Accounting Standards Codification
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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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