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v3.19.1

Organization and Basis of Presentation (Details) $ / shares in Units, $ in Billions |  | 3 Months Ended
--- | --- | ---
Mar. 01, 2019 USD ($) $ / shares | Mar. 31, 2019 country segment
Organization, Consolidation And Presentation Of Financial Statements [Line Items] |  |
Number of countries in which entity operates | country |  | 36
Number of operating segments |  | 2
Number of non-operating segments |  | 1
ITG |  |
Organization, Consolidation And Presentation Of Financial Statements [Line Items] |  |
Acquisition value (in dollars per share) | $ / shares | $ 30.30 |
Total cash consideration | $ | $ 1.0 |
Virtu Financial |  |
Organization, Consolidation And Presentation Of Financial Statements [Line Items] |  |
Ownership interest (as a percent) |  | 57.00%

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