Level 3 Analysis - Supplemental Data [Abstract]

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- Definition

The percentage of level 3 assets as compared to total assets of the entity.

+ References

No definition available.

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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- Definition

Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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Fair Value Measurement - Level 3 Analysis (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Level 3 Analysis - Supplemental Data [Abstract]
Percentage of level 3 assets in total Firm assets	0.70%
Trading loans
Level 3 Analysis - Supplemental Data [Abstract]
Decrease in level 3 assets	$ 765	$ 1,491	$ 787
Recurring
Level 3 Analysis - Supplemental Data [Abstract]
Assets fair value	680,612	625,737
Recurring \| Trading assets
Level 3 Analysis - Supplemental Data [Abstract]
Decrease in level 3 assets	1,200
Recurring \| Trading loans
Level 3 Analysis - Supplemental Data [Abstract]
Decrease in level 3 assets	1,000
Recurring \| Level 3
Level 3 Analysis - Supplemental Data [Abstract]
Assets fair value	17,165	$ 19,216
Decrease in level 3 assets	$ 2,100