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Regulatory Requirements (Tables) | 9 Months Ended
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Sep. 30, 2019
Regulatory Requirements [Abstract] |
Summary Of Capital, Capital Requirements And Excess Capital |
|  | Net Capital/ |  |  |  |  |  |
|  | Eligible Equity |  | Requirement |  | Excess
|  | (in millions)
IB LLC |  | $ | 5,386 |  | $ | 422 |  | $ | 4,964
TH LLC |  |  | 44 |  |  | — |  |  | 44
IBKRFS |  |  | 572 |  |  | 94 |  |  | 478
Other regulated Operating Companies |  |  | 828 |  |  | 137 |  |  | 691
|  | $ | 6,830 |  | $ | 653 |  | $ | 6,177

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