XML 18 R30.htm IDEA: XBRL DOCUMENT
v3.19.3

Other Income (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2019
Other Income [Abstract] |
Schedule Of Components Of Other Income |
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
|  | (in millions)
Market data fees 1 |  | $ | 11 |  | $ | 12 |  | $ | 34 |  | $ | 34
Risk exposure fees 1 |  |  | 4 |  |  | 5 |  |  | 13 |  |  | 20
Payments for order flow 1 |  |  | 5 |  |  | 6 |  |  | 16 |  |  | 16
Minimum activity fees 1 |  |  | 7 |  |  | 6 |  |  | 20 |  |  | 16
Other brokerage related fees |  |  | 7 |  |  | 7 |  |  | 19 |  |  | 18
Gains (losses) on financial instruments, at fair value and other investments, net |  |  | (7) |  |  | 4 |  |  | 49 |  |  | 15
Gains (losses) from currency diversification strategy, net |  |  | (47) |  |  | (24) |  |  | (72) |  |  | (7)
Other, net |  |  | 1 |  |  | 5 |  |  | 4 |  |  | 9
|  | $ | (19) |  | $ | 21 |  | $ | 83 |  | $ | 121
(1)See Note 8 for description of these revenues.

X
- Definition Tabular disclosure of each major component of other income. + References No definition available. + Details
Name: | ibkr_OtherIncomeTableTextBlock
Namespace Prefix: | ibkr_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OtherIncomeAndExpensesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration