Organization Of Business	12 Months Ended
Dec. 31, 2023
Organization Of Business [Abstract]
Organization Of Business	1. Organization of Business Interactive Brokers Group, Inc. (“IBG, Inc.”) is a Delaware holding company whose primary asset is its ownership of approximately 25.4% of the membership interests of IBG LLC, which, in turn, owns operating subsidiaries (collectively, “IBG LLC”). IBG, Inc. together with IBG LLC and its consolidated subsidiaries (collectively, “the Company”), is an automated global electronic broker specializing in executing and clearing trades in stocks, options, futures, foreign exchange instruments, bonds, mutual funds, exchange-traded funds (“ETFs”) and precious metals on more than 150 electronic exchanges and market centers around the world and offering custody, prime brokerage, securities and margin lending services to customers. In addition, the Company’s customers can use its trading platform to trade certain cryptocurrencies through third-party cryptocurrency service providers that execute, clear and custody the cryptocurrencies. In the United States of America (“U.S.”), the Company conducts its business primarily from its headquarters in Greenwich, Connecticut and from Chicago, Illinois. Abroad, the Company conducts its business through offices located in Canada, the United Kingdom, Ireland, Switzerland, Hungary, India, China (Hong Kong and Shanghai), Japan, Singapore, and Australia. As of December 31, 2023, the Company had 2,932 employees worldwide. IBG LLC is a Connecticut limited liability company that conducts its business through its significant operating subsidiaries: Interactive Brokers LLC (“IB LLC”); IBKR Securities Services LLC (“IBKRSS”); Interactive Brokers Canada Inc. (“IBC”); Interactive Brokers (U.K.) Limited (“IBUK”); Interactive Brokers Ireland Limited (“IBIE”); IBKR Financial Services AG (“IBKRFS”); Interactive Brokers Central Europe Zrt. (“IBCE”); Interactive Brokers (India) Private Limited (“IBI”); Interactive Brokers Hong Kong Limited (“IBHK”); Interactive Brokers Securities Japan, Inc. (“IBSJ”); Interactive Brokers Singapore Private Limited (“IBSG”); and Interactive Brokers Australia Pty Limited (“IBA”). Certain operating subsidiaries are members of various securities and commodities exchanges in North America, Europe and the Asia/Pacific region and are subject to regulatory capital and other requirements (see Note 16). IB LLC, IBKRSS, IBC, IBUK, IBIE, IBCE, IBI, IBHK, IBSJ, IBSG and IBA carry securities accounts for customers or perform custodial functions relating to customer securities.

Organization Of Business

12 Months Ended

Dec. 31, 2023

1. Organization of Business

Interactive Brokers Group, Inc. (“IBG, Inc.”) is a Delaware holding company whose primary asset is its ownership of approximately 25.4% of the membership interests of IBG LLC, which, in turn, owns operating subsidiaries (collectively, “IBG LLC”). IBG, Inc. together with IBG LLC and its consolidated subsidiaries (collectively, “the Company”), is an automated global electronic broker specializing in executing and clearing trades in stocks, options, futures, foreign exchange instruments, bonds, mutual funds, exchange-traded funds (“ETFs”) and precious metals on more than 150 electronic exchanges and market centers around the world and offering custody, prime brokerage, securities and margin lending services to customers. In addition, the Company’s customers can use its trading platform to trade certain cryptocurrencies through third-party cryptocurrency service providers that execute, clear and custody the cryptocurrencies. In the United States of America (“U.S.”), the Company conducts its business primarily from its headquarters in Greenwich, Connecticut and from Chicago, Illinois. Abroad, the Company conducts its business through offices located in Canada, the United Kingdom, Ireland, Switzerland, Hungary, India, China (Hong Kong and Shanghai), Japan, Singapore, and Australia. As of December 31, 2023, the Company had 2,932 employees worldwide.

IBG LLC is a Connecticut limited liability company that conducts its business through its significant operating subsidiaries: Interactive Brokers LLC (“IB LLC”); IBKR Securities Services LLC (“IBKRSS”); Interactive Brokers Canada Inc. (“IBC”); Interactive Brokers (U.K.) Limited (“IBUK”); Interactive Brokers Ireland Limited (“IBIE”); IBKR Financial Services AG (“IBKRFS”); Interactive Brokers Central Europe Zrt. (“IBCE”); Interactive Brokers (India) Private Limited (“IBI”); Interactive Brokers Hong Kong Limited (“IBHK”); Interactive Brokers Securities Japan, Inc. (“IBSJ”); Interactive Brokers Singapore Private Limited (“IBSG”); and Interactive Brokers Australia Pty Limited (“IBA”).

Certain operating subsidiaries are members of various securities and commodities exchanges in North America, Europe and the Asia/Pacific region and are subject to regulatory capital and other requirements (see Note 16). IB LLC, IBKRSS, IBC, IBUK, IBIE, IBCE, IBI, IBHK, IBSJ, IBSG and IBA carry securities accounts for customers or perform custodial functions relating to customer securities.