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Regulatory Requirements (Tables)
 12 Months Ended
Dec. 31, 2022
Regulatory Requirements [Abstract]  
Summary Of Capital, Capital Requirements And Excess Capital

Net Capital/

Eligible Equity

Requirement

Excess

(in millions)

IB LLC

$

6,425

$

661

$

5,764

IBKRFS

558

12

546

IBHK

945

200

745

Other regulated operating subsidiaries

1,851

255

1,596

$

9,779

$

1,128

$

8,651