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Other Income (Schedule Of Components Of Other Income) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Other Income [Abstract] |  |  |  |
Market data fees | $ 9 | $ 8 | $ 18 | $ 17
Account activity fees | 5 | 5 | 10 | 9
Risk exposure fees | 6 | 4 | 11 | 9
Payments for order flow | 4 | 3 | 8 | 7
Gains on financial instruments, at fair value and other investments, net |  | 16 | 2 | 51
Gains (losses) from currency diversification strategy, net | 29 | 17 | 78 | 101
Other, net | 6 | 4 | 8 | 7
Other income | $ 59 | $ 57 | $ 135 | $ 201

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- Definition Account Activity Fees + References No definition available. + Details
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- Definition Gains (losses) on financial instruments, at fair value and other investments, net + References No definition available. + Details
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- Definition Gains (losses) from the Company’s currency diversification strategy, net. + References No definition available. + Details
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- Definition Market Data Fees + References No definition available. + Details
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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 No definition available. + Details
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- Definition Payments For Order Flow + References No definition available. + Details
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- Definition Fee income earned from a small minority of customers with positions on which market risk exceeds certain threshholds. + References No definition available. + Details
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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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