Schedule I - Condensed Financial Information of Registrant (Parent Company Only)	12 Months Ended
Dec. 31, 2021
Schedule I - Condensed Financial Information of Registrant (Parent Company Only) [Abstract]
Schedule I - Condensed Financial Information of Registrant (Parent Company Only)	INTERACTIVE BROKERS GROUP, INC.(Parent Company Only)CONDENSED STATEMENTS OF FINANCIAL CONDITION December 31, (in millions, except share amounts) 2021 2020 Assets Cash and cash equivalents $ — $ 4Investments in subsidiaries, equity basis 2,400 1,962Other assets 236 205Total assets $ 2,636 $ 2,171Liabilities and Equity Liabilities: Payable to affiliates $ 222 $ 199Accrued expenses and other liabilities 19 21 241 220Stockholders' equity: Common stock, $0.01 par value per share: Class A – Authorized - 1,000,000,000, Issued - 98,359,572 and 90,909,889 shares, Outstanding – 98,204,658 and 90,773,105 shares as of December 31, 2021 and 2020 1 1Class B – Authorized, Issued and Outstanding – 100 shares as of December 31, 2021 and 2020 — —Additional paid-in capital 1,442 1,244Retained earnings 953 683Accumulated other comprehensive income, net of income taxes of $0 and $0 as of December 31, 2021 and 2020 4 26Treasury stock, at cost, 154,914 and 136,784 shares as of December 31, 2021 and 2020 (5) (3)Total equity 2,395 1,951Total liabilities and equity $ 2,636 $ 2,171 See accompanying notes to the condensed financial statements.‎ INTERACTIVE BROKERS GROUP, INC.(Parent Company Only)CONDENSED STATEMENTS OF COMPREHENSIVE INCOME Year-Ended December 31,(in millions) 2021 2020 2019 Income (loss) before income from subsidiaries $ — $ (3) $ (2)Undistributed gains of subsidiaries, net 383 237 208Income tax expense 75 39 45Net income $ 308 $ 195 $ 161 Net income available for common stockholders $ 308 $ 195 $ 161Cumulative translation adjustment, net of tax (22) 26 4Comprehensive income available for common stockholders $ 286 $ 221 $ 165 See accompanying notes to the condensed financial statements. ‎ INTERACTIVE BROKERS GROUP, INC.(Parent Company Only)CONDENSED STATEMENTS OF CASH FLOWS Year-Ended December 31,(in millions) 2021 2020 2019 Cash flows from operating activities Net income $ 308 $ 195 $ 161Adjustments to reconcile net income to net cash used in operating activities Undistributed gains of subsidiaries, net (383) (237) (208)Deferred income taxes 18 15 23(Gain) loss on remeasurement of Tax Receivable Agreement liability (1) 3 —Changes in operating assets and liabilities 21 (17) (1)Net cash used in operating activities (37) (41) (25)Cash flows provided by investing activities 111 67 81Cash flows used in financing activities (56) (49) (60)Effect of exchange rate changes on cash and cash equivalents (22) 26 4Net increase in cash and cash equivalents (4) 3 —Cash and cash equivalents at beginning of period 4 1 1Cash and cash equivalents at end of period $ — $ 4 $ 1Supplemental disclosures of cash flow information Cash paid for interest $ 1 $ — $ 2Cash paid for taxes, net $ 57 $ 16 $ 20 Non-cash investing activities: Non-cash distributions from subsidiaries $ 1 $ 1 $ — See accompanying notes to the condensed financial statements. ‎ INTERACTIVE BROKERS GROUP, INC.(Parent Company Only) NOTES TO CONDENSED FINANCIAL STATEMENTS1. Basis of Presentation The accompanying condensed financial statements (the “Parent Company Financial Statements”) of Interactive Brokers Group, Inc. (“IBG, Inc.”), a Delaware holding company, including the notes thereto, should be read in conjunction with the consolidated financial statements of IBG, Inc. and its subsidiaries (the “Company”) and the notes thereto. IBG, Inc.’s primary asset is its ownership interest in IBG LLC, an automated global electronic broker specializing in executing and clearing trades in stocks, options, futures, foreign exchange instruments, bonds, mutual funds and exchange-traded funds (“ETFs”) on more than 150 electronic exchanges and market centers around the world and offering custody, prime brokerage, securities and margin lending services to customers. The preparation of the Parent Company Financial Statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts and disclosures in the condensed financial statements and accompanying notes. Income Taxes Refer to Note 2 to the consolidated financial statements. 2. Related Party Transactions As of December 31, 2021, receivables from affiliates was immaterial and as of December 31, 2020, there were no receivables from affiliates. Dividends received from IBG LLC for the three years ended December 31, 2021, 2020, and 2019, were $112 million, $67 million and $81 million, respectively. As of December 31, 2021, and 2020, respectively, payable to affiliates of $222 million and $199 million consisted primarily of amounts payable to Holdings under the Tax Receivable Agreement. 3. Stockholders’ Equity Refer to Note 4 to the consolidated financial statements. 4. Employee Incentive Plans Refer to Note 10 to the consolidated financial statements. 5. Commitments, Contingencies and Guarantees Refer to Note 14 to the consolidated financial statements. 6. Subsequent Events As required by FASB ASC Topic, “Subsequent Events,” IBG, Inc. has evaluated subsequent events for adjustment to or disclosure in its condensed financial statements through the date the condensed financial statements were issued. Except as disclosed in Note 4 and Note 14 to the consolidated financial statements, no other recordable or disclosable events occurred.

Schedule I - Condensed Financial Information of Registrant (Parent Company Only)

12 Months Ended

Dec. 31, 2021

Schedule I - Condensed Financial Information of Registrant (Parent Company Only) [Abstract]

Schedule I - Condensed Financial Information of Registrant (Parent Company Only)

INTERACTIVE BROKERS GROUP, INC.(Parent Company Only)CONDENSED STATEMENTS OF FINANCIAL CONDITION December 31, (in millions, except share amounts) 2021 2020 Assets Cash and cash equivalents $ — $ 4Investments in subsidiaries, equity basis 2,400 1,962Other assets 236 205Total assets $ 2,636 $ 2,171Liabilities and Equity Liabilities: Payable to affiliates $ 222 $ 199Accrued expenses and other liabilities 19 21 241 220Stockholders' equity: Common stock, $0.01 par value per share: Class A – Authorized - 1,000,000,000, Issued - 98,359,572 and 90,909,889 shares, Outstanding – 98,204,658 and 90,773,105 shares as of December 31, 2021 and 2020 1 1Class B – Authorized, Issued and Outstanding – 100 shares as of December 31, 2021 and 2020 — —Additional paid-in capital 1,442 1,244Retained earnings 953 683Accumulated other comprehensive income, net of income taxes of $0 and $0 as of December 31, 2021 and 2020 4 26Treasury stock, at cost, 154,914 and 136,784 shares as of December 31, 2021 and 2020 (5) (3)Total equity 2,395 1,951Total liabilities and equity $ 2,636 $ 2,171 See accompanying notes to the condensed financial statements.‎ INTERACTIVE BROKERS GROUP, INC.(Parent Company Only)CONDENSED STATEMENTS OF COMPREHENSIVE INCOME Year-Ended December 31,(in millions) 2021 2020 2019 Income (loss) before income from subsidiaries $ — $ (3) $ (2)Undistributed gains of subsidiaries, net 383 237 208Income tax expense 75 39 45Net income $ 308 $ 195 $ 161 Net income available for common stockholders $ 308 $ 195 $ 161Cumulative translation adjustment, net of tax (22) 26 4Comprehensive income available for common stockholders $ 286 $ 221 $ 165 See accompanying notes to the condensed financial statements. ‎ INTERACTIVE BROKERS GROUP, INC.(Parent Company Only)CONDENSED STATEMENTS OF CASH FLOWS Year-Ended December 31,(in millions) 2021 2020 2019 Cash flows from operating activities Net income $ 308 $ 195 $ 161Adjustments to reconcile net income to net cash used in operating activities Undistributed gains of subsidiaries, net (383) (237) (208)Deferred income taxes 18 15 23(Gain) loss on remeasurement of Tax Receivable Agreement liability (1) 3 —Changes in operating assets and liabilities 21 (17) (1)Net cash used in operating activities (37) (41) (25)Cash flows provided by investing activities 111 67 81Cash flows used in financing activities (56) (49) (60)Effect of exchange rate changes on cash and cash equivalents (22) 26 4Net increase in cash and cash equivalents (4) 3 —Cash and cash equivalents at beginning of period 4 1 1Cash and cash equivalents at end of period $ — $ 4 $ 1Supplemental disclosures of cash flow information Cash paid for interest $ 1 $ — $ 2Cash paid for taxes, net $ 57 $ 16 $ 20 Non-cash investing activities: Non-cash distributions from subsidiaries $ 1 $ 1 $ — See accompanying notes to the condensed financial statements. ‎ INTERACTIVE BROKERS GROUP, INC.(Parent Company Only) NOTES TO CONDENSED FINANCIAL STATEMENTS1. Basis of Presentation The accompanying condensed financial statements (the “Parent Company Financial Statements”) of Interactive Brokers Group, Inc. (“IBG, Inc.”), a Delaware holding company, including the notes thereto, should be read in conjunction with the consolidated financial statements of IBG, Inc. and its subsidiaries (the “Company”) and the notes thereto. IBG, Inc.’s primary asset is its ownership interest in IBG LLC, an automated global electronic broker specializing in executing and clearing trades in stocks, options, futures, foreign exchange instruments, bonds, mutual funds and exchange-traded funds (“ETFs”) on more than 150 electronic exchanges and market centers around the world and offering custody, prime brokerage, securities and margin lending services to customers. The preparation of the Parent Company Financial Statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts and disclosures in the condensed financial statements and accompanying notes. Income Taxes Refer to Note 2 to the consolidated financial statements. 2. Related Party Transactions As of December 31, 2021, receivables from affiliates was immaterial and as of December 31, 2020, there were no receivables from affiliates. Dividends received from IBG LLC for the three years ended December 31, 2021, 2020, and 2019, were $112 million, $67 million and $81 million, respectively. As of December 31, 2021, and 2020, respectively, payable to affiliates of $222 million and $199 million consisted primarily of amounts payable to Holdings under the Tax Receivable Agreement. 3. Stockholders’ Equity Refer to Note 4 to the consolidated financial statements. 4. Employee Incentive Plans Refer to Note 10 to the consolidated financial statements. 5. Commitments, Contingencies and Guarantees Refer to Note 14 to the consolidated financial statements. 6. Subsequent Events As required by FASB ASC Topic, “Subsequent Events,” IBG, Inc. has evaluated subsequent events for adjustment to or disclosure in its condensed financial statements through the date the condensed financial statements were issued. Except as disclosed in Note 4 and Note 14 to the consolidated financial statements, no other recordable or disclosable events occurred.