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Organization and Nature of Operations (Details) (USD $)
In Trillions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
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Organization and Nature of Operations [Abstract]  
Operations in number of continents 6
Total number of U.S. listed companies 2,667
Approximate combined market capitalization, U.S. $ 7.4
Total number of listed companies within Nordic and Baltic exchanges 755
Approximate combined market capitalization, Nordic and Baltic $ 1.4