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Regulatory Requirements | 12 Months Ended
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Dec. 31, 2019
Regulatory Requirements [Abstract] |
Regulatory Requirements | 16. Regulatory Requirements As of December 31, 2019, aggregate excess regulatory capital for all of the operating subsidiaries was $6.4 billion. IB LLC, TH LLC and IB Corp are subject to the Uniform Net Capital Rule (Rule 15c3-1) under the Exchange Act, IB LLC is also subject to the CFTC’s minimum financial requirements (Regulation 1.17), and IBKRFS is subject to the Swiss Financial Market Supervisory Authority eligible equity requirement. IBC is subject to the Investment Industry Regulatory Organization of Canada risk adjusted capital requirement, IBUK is subject to the United Kingdom Financial Conduct Authority Capital Requirements Directive, IBEU is subject to the Luxembourg Commission de Surveillance du Secteur Financier financial resources requirement, IBHK is subject to the Hong Kong Securities Futures Commission liquid capital requirement, IBI is subject to the National Stock Exchange of India net capital requirements, IBSJ is subject to the Japanese Financial Supervisory Agency capital requirements and IBA is subject to the Australian Securities Exchange liquid capital requirement. The table below summarizes capital, capital requirements and excess regulatory capital as of December 31. 2019.
|  | Net Capital/ |  |  |  |  |  |
|  | Eligible Equity |  | Requirement |  | Excess
|  | (in millions)
IB LLC |  | $ | 5,381 |  | $ | 549 |  | $ | 4,832
IBKRFS |  |  | 584 |  |  | 91 |  |  | 493
IBHK |  |  | 360 |  |  | 145 |  |  | 215
Other regulated operating subsidiaries |  |  | 867 |  |  | 44 |  |  | 823
|  | $ | 7,192 |  | $ | 829 |  | $ | 6,363
Regulatory capital requirements could restrict the operating subsidiaries from expanding their business and declaring dividends if their net capital does not meet regulatory requirements. Also, certain operating subsidiaries are subject to other regulatory restrictions and requirements. As of December 31, 2019, all of the regulated operating subsidiaries were in compliance with their respective regulatory capital requirements.

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