Borrowings and Other Secured Financings (Other Secured Financings) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Borrowings and Other Secured Financings
Secured financings with original maturities greater than one year	$ 8,159	$ 8,685
Secured financings with original maturities one year or less	1,406	2,034
Failed sales	710	552
Total other secured financings	$ 10,275	$ 11,271

Secured financings with original maturities greater than one year.

No definition available.

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- Definition

Secured financings with original maturities one year or less.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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- Definition

Secured financing other than securities sold under agreements to repurchase and securities loaned.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 15
-Paragraph 83
-URI http://asc.fasb.org/extlink&oid=77898254&loc=d3e34841-113949

+ Details

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- Definition

Carrying amount of liabilities associated with financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=64858031&loc=SL6224234-111729

+ Details

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