v2.4.0.8

Condensed Consolidated Statements of Changes in Equity (Unaudited) (USD $) In Thousands, except Share data	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, 2012	$ 478	$ 493,912	$ (7,718)	$ 82,072	$ 29,754	$ 598,498	$ 4,214,649	$ 4,813,147
Common stock, shares issued at Dec. 31, 2012	47,797,844
Common stock distributed pursuant to stock plans	22	(22)	5,184			5,184		5,184
Common Stock distributed pursuant to stock plans (in shares)	2,292,992
Compensation for stock grants vesting in the future		2,964				2,964	21,621	24,585
Dividends paid to stockholders				(9,745)		(9,745)		(9,745)
Distributions from IBG LLC to noncontrolling interests							(70,406)	(70,406)
Adjustments for changes in proportionate ownership in IBG LLC		19,826				19,826	(19,826)
Comprehensive Income				16,935	(7,346)	9,589	122,774	132,363
Balance at Jun. 30, 2013	500	516,680	(2,534)	89,262	22,408	626,316	4,268,812	4,895,128
Common stock, shares issued at Jun. 30, 2013	50,090,836
Balance at Dec. 31, 2013	548	583,312	(2,492)	98,868	27,028	707,264	4,384,862	5,092,126
Common stock, shares issued at Dec. 31, 2013	54,788,049
Common stock distributed pursuant to stock plans	24	(24)	72			72		72
Common Stock distributed pursuant to stock plans (in shares)	2,432,410
Compensation for stock grants vesting in the future		2,966				2,966	18,635	21,601
Dividends paid to stockholders				(11,176)		(11,176)		(11,176)
Distributions from IBG LLC to noncontrolling interests							(203,502)	(203,502)
Adjustments for changes in proportionate ownership in IBG LLC		27,132				27,132	(27,132)
Comprehensive Income				34,250	1,846	36,096	340,374	376,470
Balance at Jun. 30, 2014	$ 572	$ 613,386	$ (2,420)	$ 121,942	$ 28,874	$ 762,354	$ 4,513,237	$ 5,275,591
Common stock, shares issued at Jun. 30, 2014	57,220,459

X

- Definition

Compensation expense related to grants made under the Stock Incentive Plan recorded directly against additional paid in capital.

+ References

No definition available.

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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.

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X

- Definition

Number of shares of stock vested and distributed during the period as a result of any share-based compensation plan other than an employee stock ownership plan.

+ References

No definition available.

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- 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.

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- 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://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

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- 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.

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- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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-Publisher SEC

-Name Regulation S-X (SX)

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-Section 04

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-Topic 505

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- 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.

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- 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.

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