This is the principal amount of loans (across all types of loans) that are overdue in payment by a set number of days.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (e)(4)
-URI http://asc.fasb.org/extlink&oid=118948506&loc=d3e107314-111719

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- Definition

Amount of credit loss after recoveries for transferred financial assets that continue to be recognized in the statement of financial position.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (e)(5)
-URI http://asc.fasb.org/extlink&oid=118948506&loc=d3e107314-111719

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Loan Delinquencies and Liquidation Losses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Residential mortgage
Variable Interest Entity
Securitized assets	$ 11,400		$ 11,400		$ 5,200
Liquidation losses	9	$ 18	20	$ 32
Commercial and other
Variable Interest Entity
Securitized assets	14,400		14,400		13,100
Liquidation losses	0	0	0	0
Mortgage securitizations - Non-agency-sponsored
Variable Interest Entity
Securitized assets	25,800		25,800		18,300
Liquidation losses	9	$ 18	20	$ 32
90 days past due \| Residential mortgage
Variable Interest Entity
Securitized assets	300		300		400
90 days past due \| Commercial and other
Variable Interest Entity
Securitized assets	0		0		0
90 days past due \| Mortgage securitizations - Non-agency-sponsored
Variable Interest Entity
Securitized assets	$ 300		$ 300		$ 400