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Regulatory Requirements (Tables) | 9 Months Ended
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Sep. 30, 2021
Regulatory Requirements [Abstract] |
Summary Of Capital, Capital Requirements And Excess Capital |
|  | Net Capital/ |  |  |  |  |  |
|  | Eligible Equity |  | Requirement |  | Excess
|  | (in millions)
IB LLC |  | $ | 5,460 |  | $ | 945 |  | $ | 4,515
IBKRFS |  |  | 607 |  |  | 11 |  |  | 596
IBHK |  |  | 810 |  |  | 281 |  |  | 529
Other regulated operating subsidiaries |  |  | 1,774 |  |  | 272 |  |  | 1,502
|  | $ | 8,651 |  | $ | 1,509 |  | $ | 7,142

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