XML 38 R27.htm IDEA: XBRL DOCUMENT v3.21.1

Equity And Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2021

Equity And Earnings Per Share [Abstract]

IBG LLC Ownership of Member Interests

		IBG, Inc.		Holdings		Total
	Ownership %	21.8%		78.2%		100.0%
	Membership interests	90,830,444		325,960,034		416,790,478

Earnings Per Share Basic And Diluted

Basic earnings per share is calculated utilizing net income available for common stockholders divided by the weighted average number of shares of Class A and Class B common stock outstanding for that period.

		Three Months Ended March 31,
		2021			2020
		(in millions, except share or per share amounts)
Basic earnings per share
Net income available for common stockholders		$	107		$	46
Weighted average shares of common stock outstanding
Class A			90,789,221			76,751,068
Class B			100			100
			90,789,321			76,751,168
Basic earnings per share		$	1.18		$	0.60

Diluted earnings per share are calculated utilizing the Company’s basic net income available for common stockholders divided by diluted weighted average shares outstanding with no adjustments to net income available to common stockholders for potentially dilutive common shares.

		Three Months Ended March 31,
		2021			2020
		(in millions, except share or per share amounts)
Diluted earnings per share
Net income available for common stockholders		$	107		$	46
Weighted average shares of common stock outstanding
Class A
Issued and outstanding			90,789,221			76,751,068
Potentially dilutive common shares
Issuable pursuant to employee stock incentive plans			976,821			817,296
Class B			100			100
			91,766,142			77,568,464
Diluted earnings per share		$	1.16		$	0.60

X

- Definition

Tabular disclosure of the ownership of IBG LLC member interests.

+ References

No definition available.

+ Details

Name:	ibkr_IbgLlcOwnershipOfMemberInterests
Namespace Prefix:	ibkr_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_EquityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

+ Details

Name:	us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration