XML 17 R6.htm IDEA: XBRL DOCUMENT
v3.20.2

Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Millions | Common Stock [Member] | Additional Paid-in Capital [Member] | Treasury Stock [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income [Member] | Total Stockholders' Equity [Member] | Non-controlling Interests [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2018 | $ 1 | $ 898 | $ (3) | $ 390 | $ (4) | $ 1,282 | $ 5,874 | $ 7,156
Balance (in shares) at Dec. 31, 2018 | 75,230,400 |  |  |  |  |  |  |
Common Stock distributed pursuant to stock incentive plans (in shares) | 905 |  |  |  |  |  |  |
Compensation for stock grants vesting in the future |  | 3 |  |  |  | 3 | 13 | 16
Dividends paid to stockholders |  |  |  | (8) |  | (8) |  | (8)
Distributions from IBG LLC to noncontrolling interests |  |  |  |  |  |  | (60) | (60)
Comprehensive income |  |  |  | 49 | (1) | 48 | 274 | 322
Balance at Mar. 31, 2019 | $ 1 | 901 | (3) | 431 | (5) | 1,325 | 6,101 | 7,426
Balance (in shares) at Mar. 31, 2019 | 75,231,305 |  |  |  |  |  |  |
Common Stock distributed pursuant to stock incentive plans (in shares) | 1,625,479 |  |  |  |  |  |  |
Compensation for stock grants vesting in the future |  | 2 |  |  |  | 2 | 12 | 14
Repurchase of common stock for employee tax withholding under stock incentive plans |  |  | (27) |  |  | (27) |  | (27)
Sales of treasury stock |  |  | 27 |  |  | 27 | (1) | 26
Dividends paid to stockholders |  |  |  | (7) |  | (7) |  | (7)
Distributions from IBG LLC to noncontrolling interests |  |  |  |  |  |  | (38) | (38)
Adjustments for changes in proportionate ownership in IBG LLC |  | 24 |  |  |  | 24 | (24) |
Comprehensive income |  |  |  | 32 | 4 | 36 | 190 | 226
Balance at Jun. 30, 2019 | $ 1 | 927 | (3) | 456 | (1) | 1,380 | 6,240 | 7,620
Balance (in shares) at Jun. 30, 2019 | 76,856,784 |  |  |  |  |  |  |
Issuance of common stock in follow-on offering, shares | 21,075 |  |  |  |  |  |  |
Common Stock distributed pursuant to stock incentive plans (in shares) | 441 |  |  |  |  |  |  |
Compensation for stock grants vesting in the future |  | 3 |  |  |  | 3 | 10 | 13
Dividends paid to stockholders |  |  |  | (8) |  | (8) |  | (8)
Distributions from IBG LLC to noncontrolling interests |  |  |  |  |  |  | (205) | (205)
Comprehensive income |  |  |  | 36 | (6) | 30 | 203 | 233
Balance at Sep. 30, 2019 | $ 1 | 930 | (3) | 484 | (7) | 1,405 | 6,248 | 7,653
Balance (in shares) at Sep. 30, 2019 | 76,878,300 |  |  |  |  |  |  |
Balance at Dec. 31, 2019 | $ 1 | 934 | (3) | 520 |  | 1,452 | 6,488 | 7,940
Balance (in shares) at Dec. 31, 2019 | 76,889,040 |  |  |  |  |  |  |
Common Stock distributed pursuant to stock incentive plans (in shares) | 311 |  |  |  |  |  |  |
Compensation for stock grants vesting in the future |  | 3 |  |  |  | 3 | 13 | 16
Dividends paid to stockholders |  |  |  | (8) |  | (8) |  | (8)
Distributions from IBG LLC to noncontrolling interests |  |  |  |  |  |  | (53) | (53)
Comprehensive income |  |  |  | 46 | (7) | 39 | 213 | 252
Balance at Mar. 31, 2020 | $ 1 | 937 | (3) | 558 | (7) | 1,486 | 6,661 | 8,147
Balance (in shares) at Mar. 31, 2020 | 76,889,351 |  |  |  |  |  |  |
Common Stock distributed pursuant to stock incentive plans (in shares) | 1,297,716 |  |  |  |  |  |  |
Compensation for stock grants vesting in the future |  | 2 |  |  |  | 2 | 11 | 13
Repurchase of common stock for employee tax withholding under stock incentive plans |  |  | (17) |  |  | (17) |  | (17)
Sales of treasury stock |  |  | 17 |  |  | 17 | 1 | 18
Dividends paid to stockholders |  |  |  | (7) |  | (7) |  | (7)
Distributions from IBG LLC to noncontrolling interests |  |  |  |  |  |  | (129) | (129)
Adjustments for changes in proportionate ownership in IBG LLC |  | 21 |  |  |  | 21 | (21) |
Comprehensive income |  |  |  | 32 | 4 | 36 | 193 | 229
Balance at Jun. 30, 2020 | $ 1 | 960 | (3) | 583 | (3) | 1,538 | 6,716 | 8,254
Balance (in shares) at Jun. 30, 2020 | 78,187,067 |  |  |  |  |  |  |
Issuance of common stock in follow-on offering |  | 20 |  |  |  | 20 | (20) |
Issuance of common stock in follow-on offering, shares | 1,000,000 |  |  |  |  |  |  |
Common stock distributed pursuant to stock incentive plans |  | 4 |  |  |  | 4 | 13 | 17
Deferred tax benefit retained - follow-on offering |  | 1 |  |  |  | 1 |  | 1
Dividends paid to stockholders |  |  |  | (8) |  | (8) |  | (8)
Distributions from IBG LLC to noncontrolling interests |  |  |  |  |  |  | (65) | (65)
Comprehensive income |  |  |  | 46 | 8 | 54 | 293 | 347
Balance at Sep. 30, 2020 | $ 1 | $ 985 | $ (3) | $ 621 | $ 5 | $ 1,609 | $ 6,937 | $ 8,546
Balance (in shares) at Sep. 30, 2020 | 79,187,067 |  |  |  |  |  |  |

X
- Definition This element represents the total net changes during the period impacting the parent's ownership interest in a subsidiary as it relates to the total (consolidated) equity attributable to the parent as it is presented on the Statement of Changes in Equity. + References No definition available. + Details
Name: | ibkr_OwnershipInterestChangeSCE
Namespace Prefix: | ibkr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Period increase in the value of tax savings realized by IBG Inc. that is not payable to IBG Holdings LLC, according to the "Tax Receivable Agreement". Amount increases additional paid-in capital. + References No definition available. + Details
Name: | ibkr_PeriodIncreaseTaxSavingsRetained
Namespace Prefix: | ibkr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Repurchase of common stock for employee tax withholding under stock incentive plans + References No definition available. + Details
Name: | ibkr_RepurchaseOfCommonStockForEmployeeTaxWithholdingUnderStockIncentivePlans
Namespace Prefix: | ibkr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Value of stock vested and distributed during the period as a result of any share-based compensation plan other than an employee stock ownership plan (ESOP) based on the fair value at the date of grant. + References No definition available. + Details
Name: | ibkr_StockDistributedDuringPeriodValueSharebasedCompensation
Namespace Prefix: | ibkr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Stock Issued During Period Share Redemptions New Issues + References No definition available. + Details
Name: | ibkr_StockIssuedDuringPeriodShareRedemptionsNewIssues
Namespace Prefix: | ibkr_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity impact of the value of new stock issued during the period as a result of non-controlling interest redemptions. + References No definition available. + Details
Name: | ibkr_StockIssuedDuringPeriodValueRedemptionsNewIssues
Namespace Prefix: | ibkr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase to additional paid-in capital (APIC) for recognition of cost for restricted stock unit under share-based payment arrangement. + References No definition available. + Details
Name: | us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=116874947&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580 + Details
Name: | us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 + Details
Name: | us-gaap_DividendsCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number, before forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP). + References No definition available. + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4568740-111683 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4I -URI http://asc.fasb.org/extlink&oid=116874947&loc=SL4590271-111686 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4568447-111683 + Details
Name: | us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant