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Regulatory Requirements (Tables) | 6 Months Ended
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Jun. 30, 2019
Regulatory Requirements [Abstract] |
Summary Of Capital, Capital Requirements And Excess Capital |
|  | Net Capital/ |  |  |  |  |  |
|  | Eligible Equity |  | Requirement |  | Excess
|  | (in millions)
IB LLC |  | $ | 5,432 |  | $ | 423 |  | $ | 5,009
TH LLC |  |  | 51 |  |  | — |  |  | 51
IBKRFS |  |  | 586 |  |  | 91 |  |  | 495
Other regulated Operating Companies |  |  | 859 |  |  | 129 |  |  | 730
|  | $ | 6,928 |  | $ | 643 |  | $ | 6,285

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