XML 49 R32.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Collateralized Transactions (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
Disclosure Collateralized Transactions [Abstract] |
Amounts Related To Collateralized Transactions |
|  | December 31, 2024 |  | December 31, 2023
|  | Permitted |  | Sold or |  | Permitted |  | Sold or
|  | to Repledge |  | Repledged |  | to Repledge |  | Repledged
|  | (in millions)
Securities lending transactions |  | $ | 134,407 |  | $ | 8,342 |  | $ | 97,210 |  | $ | 8,437
Securities purchased under agreements to resell transactions 1 |  |  | 27,988 |  |  | 26,678 |  |  | 35,198 |  |  | 34,825
Customer margin assets |  |  | 87,809 |  |  | 21,465 |  |  | 54,847 |  |  | 17,234
|  | $ | 250,204 |  | $ | 56,485 |  | $ | 187,255 |  | $ | 60,496
___________________________ (1)As of December 31, 2024, $21.4 billion or 80% (as of December 31, 2023, $29.6 billion or 85%) of securities purchased under agreements to resell were segregated to satisfy regulatory requirements and are included in “Securities - segregated for regulatory purposes” in the consolidated statements of financial condition.
Financial Instruments Owned and Pledged as Collateral (table) |
|  | December 31,
|  | 2024 |  | 2023
|  | (in millions)
Stocks |  | $ | 25 |  | $ | 28
U.S. and foreign government securities |  |  | 52 |  |  | 38
|  | $ | 77 |  | $ | 66

X
- Definition Amounts Related to Collateralized Transactions [table] + References No definition available. + Details
Name: | ibkr_CollateralizedTransactionsTableTextBlock
Namespace Prefix: | ibkr_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ibkr_DisclosureCollateralizedTransactionsAbstract
Namespace Prefix: | ibkr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of financial instruments held by the entity for its own account for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions. Description may include equity, fixed income, debt or other securities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 860 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481444/860-30-45-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 860 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481420/860-30-50-1A + Details
Name: | us-gaap_ScheduleOfFinancialInstrumentsOwnedAndPledgedAsCollateralTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration