{"cik":1381197,"taxonomy":"us-gaap","tag":"CommonStockDividendsPerShareDeclared","label":"Common Stock, Dividends, Per Share, Declared","description":"Aggregate dividends declared during the period for each share of common stock outstanding.","entityName":"INTERACTIVE BROKERS GROUP, INC.","units":{"USD/shares":[{"start":"2011-07-01","end":"2011-09-30","val":0.1,"accn":"0001381197-11-000057","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-08","frame":"CY2011Q3"},{"start":"2012-01-01","end":"2012-01-19","val":0.1,"accn":"0001047469-12-008631","fy":2011,"fp":"FY","form":"10-K/A","filed":"2012-08-31"},{"start":"2012-01-01","end":"2012-01-19","val":0.1,"accn":"0001047469-12-001916","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-29"},{"start":"2012-04-01","end":"2012-04-17","val":0.1,"accn":"0001381197-12-000059","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2012-08-31"},{"start":"2012-04-01","end":"2012-04-17","val":0.1,"accn":"0001381197-12-000038","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-15"},{"start":"2012-07-01","end":"2012-07-17","val":0.1,"accn":"0001381197-12-000061","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-31"},{"start":"2012-10-01","end":"2012-10-16","val":0.1,"accn":"0001381197-12-000074","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09"}]}}