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Other Income (Schedule Of Components Of Other Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Other Income [Abstract]
Principal transactions	$ 12	$ (54)	$ 22	$ 69
Gains (losses) from currency diversification strategy, net	16	(6)	(33)	(25)
Other, net	(1)	1	7	1
Other income	$ 27	$ (59)	$ (4)	$ 45

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- Definition

Gains (losses) from the Company’s currency diversification strategy, net.

+ References

No definition available.

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- Definition

Reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement, including gains and losses from our currency diversification strategy, financial instruments at fair value and other investments.

+ References

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- References

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- Definition

The total amount of other operating income, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

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- Definition

Amount of realized and unrealized gain (loss) resulting from the difference between acquisition price and selling price or fair value of trading assets and trading liabilities, and from the firm's direct investment activity, conducted separately from customer trading activities, including, but not limited to, investments in private equity, alternative investment products, real estate, and exchanges and memberships.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 320
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=35711157&loc=d3e42567-110969

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