XML 36 R25.htm IDEA: XBRL DOCUMENT v3.10.0.1

Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2018

Comprehensive Income Detail [Abstract]

Comprehensive Income Table




		Three Months Ended September 30,						Nine Months Ended September 30,
		2018			2017			2018			2017
		(in millions, except share or per share amounts)

Comprehensive income available for common stockholders		$	38		$	32		$	113		$	89

Earnings per share on comprehensive income
Basic		$	0.51		$	0.45		$	1.55		$	1.28
Diluted		$	0.50		$	0.44		$	1.54		$	1.26
Weighted average common shares outstanding
Basic			74,649,469			71,109,577			72,879,007			69,405,624
Diluted			75,360,089			71,973,483			73,745,640			70,409,619



X

- References

No definition available.

+ Details

Name:	ibkr_ComprehensiveIncomeDetailAbstract
Namespace Prefix:	ibkr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e526-108580

+ Details

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