XML 60 R45.htm IDEA: XBRL DOCUMENT v3.22.0.1
Equity And Earnings Per Share (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended 36 Months Ended 120 Months Ended 176 Months Ended
Jul. 30, 2021
Jul. 27, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2021
Dec. 31, 2010
Dec. 31, 2020
Dec. 31, 2021
May 03, 2007
Equity And Earnings Per Share [Line Items]                    
IBG Holdings Redemption of IBG LLC                   10.00%
IBG Holdings LLC Ownership Percentage of Class B Common Stock                   100.00%
Preferred stock shares authorized     10,000 10,000   10,000   10,000 10,000  
Preferred stock shares issued     0 0   0   0 0  
Preferred stock shares outstanding     0 0   0   0 0  
Amortization period DTA (years)     15 years              
Unamortized deferred tax asset arising from equity offerings     $ 209 $ 190   $ 209   $ 190 $ 209  
Percent of tax savings owed to IBG Holdings LLC     85.00%              
Percentage of tax savings retained by IBG Inc.     15.00%              
Deferred tax asset from common stock offerings     $ 634     $ 634     634  
Tax savings owed to IBG Holdings LLC                 539  
Tax savings retained by IBG Inc.                 95  
Tax savings paid to IBG Holdings LLC                 $ 223  
Shares reserved for future issuance                   360,000,000
Shares redeemed by IBG Holdings from IBG LLC             5,013,259      
Cash Redemptions IBG Holdings             $ 114      
Fair Value of Issued Shares in Exchange for Membership Interests               $ 1,100    
Stock registered, number of common stock   990,000                
Shares Issued 6,079,542         170,000   28,127,765    
Shares issued, value $ 376                  
Thomas Peterffy and Affiliates Ownership     90.50%     90.50%     90.50% 84.60%
Distribution from IBG LLC     $ 489 356 $ 438          
Cash distribution to IBG, Inc.     $ 112 68 81          
Dividend per share     $ 0.10              
Dividends paid to common shareholders     $ 38 $ 32 $ 31          
Declaration Date     Jan. 18, 2022              
Payment Date     Mar. 14, 2022              
Record Date     Mar. 01, 2022              
IBG LLC [Member]                    
Equity And Earnings Per Share [Line Items]                    
IBG Inc. ownership % of IBG LLC     23.50%     23.50%     23.50% 10.00%
IBG Holdings ownership % of IBG LLC     76.50%     76.50%     76.50% 90.00%
Common Class A [Member]                    
Equity And Earnings Per Share [Line Items]                    
Common stock, par value     $ 0.01 $ 0.01   $ 0.01   $ 0.01 $ 0.01  
Shares authorized     1,000,000,000 1,000,000,000   1,000,000,000   1,000,000,000 1,000,000,000  
Common stock, shares issued     98,359,572 90,909,889   98,359,572   90,909,889 98,359,572  
Common stock, shares outstanding     98,204,658 90,773,105   98,204,658   90,773,105 98,204,658  
Common Class B [Member]                    
Equity And Earnings Per Share [Line Items]                    
Common stock, par value     $ 0.01 $ 0.01   $ 0.01   $ 0.01 $ 0.01  
Shares authorized     100 100   100   100 100  
Common stock, shares issued     100 100   100   100 100  
Common stock, shares outstanding     100 100   100   100 100