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This element represents the total net changes during the period as a result of changes in the noncontrolling interests' ownership interest in the holding company.

No definition available.

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Period increased in the value of tax savings realized by IBG Inc. that result from employee stock incentive plans. Amount increases additional paid-in capital

No definition available.

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Unrealized gains (losses) on other investments, net, including income (losses) from equity investments.

No definition available.

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The net change in the amount due from customers arising from margin loans to clients stated net of allowance for doubtful accounts.

No definition available.

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The net change in the beginning and end of period for investments purchased under the agreement to resell such investment balances.

No definition available.

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Amount of cash outflow to reacquire common stock to satisfy an employees's income tax withholding obligation as part of a net-share settlement of a share-based award

No definition available.

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Represents payments made by IBG, Inc. to IBG Holdings, LLC under the Tax Receivable Agreement

No definition available.

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No definition available.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes.

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No definition available.

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Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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The increase (decrease) during the reporting period in the liability Securities Sold, Not yet Purchased. Proprietary securities transactions entered into by the broker-dealer for trading or investment purposes are included in "Securities Owned and Securities Sold, Not Yet Purchased." Although proprietary trading is frequently thought of as purchasing securities for sale to others, trading securities for the broker-dealer's own account sometimes leads to a liability for the fair value of securities sold but not yet purchased, that is, sold short. The broker-dealer is then obliged to purchase the securities at a future date at the then-current market price.

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The increase (decrease) during the reporting period in the aggregate value of financial instruments used in operating activities, including trading securities, risk management instruments, and other short-term trading instruments.

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No definition available.

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The increase (decrease) during the reporting period in other obligations or expenses incurred but not yet paid.

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The increase (decrease) during the reporting period in other assets used in operating activities not separately disclosed in the statement of cash flows. May include changes in other current assets, other noncurrent assets, or a combination of other current and noncurrent assets.

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The increase (decrease) during the reporting period in other amounts due to the reporting entity, which are not otherwise defined in the taxonomy.

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The change during the period, either increase or decrease, in amounts payable to customers. The term customers generally excludes other broker-dealers; persons who are principal officers, directors, and stockholders; and persons whose securities or funds are part of the regulatory net capital of the broker-dealer. Another broker-dealer's account can be classified as a customer if the account is carried as an omnibus account in compliance with certain regulations. The accounts of principal officers, directors and stockholders may be combined in the customer captions if they are not material and the combination is disclosed in the oath that is required to accompany the annual audited FOCUS Report.

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The change during the period, either increase or decrease, in the amount of cash subject to withdrawal restrictions, restricted deposits, marketable securities that are pledged, investments that are pledged or subject to withdrawal restrictions, and cash and securities segregated in compliance with regulations (such as cash deposited in a special reserve account for the exclusive benefit of customers).

No definition available.

Name:	us-gaap_IncreaseDecreaseInRestrictedCashAndInvestmentsForOperatingActivities
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The increase (decrease) during the reporting period in the total amount due the entity arising from securities borrowed transactions.

Name:	us-gaap_IncreaseDecreaseInSecuritiesBorrowed
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The increase (decrease) during the reporting period in the liability arising from securities loaned transactions.

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The amount of cash paid for interest during the period.

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No definition available.

Name:	us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract
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Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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No definition available.

Name:	us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract
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Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

Name:	us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
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No definition available.

Name:	us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract
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Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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Other income (expense) included in net income that results in no cash inflows or outflows in the period. Includes noncash adjustments to reconcile net income (loss) to cash provided by (used in) operating activities that are not separately disclosed.

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The value of the noncash (or part noncash) consideration given (for example, liability, equity) in a transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of a transaction not resulting in cash receipts or cash payments in the period.

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The net cash outflow or inflow from purchases, sales and disposals of property, plant and equipment and other productive assets, including intangibles.

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Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

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Amount of cash outflow in the form of ordinary dividends provided by the non-wholly owned subsidiary to noncontrolling interests.

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The cash outflow associated with other investments held by the entity for investment purposes not otherwise defined in the taxonomy.

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The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

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The cash inflow associated with the sale, maturity and collection of all investments such as debt, security and so forth during the period.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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No definition available.