XML 36 R25.htm IDEA: XBRL DOCUMENT v3.8.0.1

Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2018

Comprehensive Income Detail [Abstract]

Comprehensive Income Table




		Three Months Ended March 31,
		2018			2017
		(in millions, except share or per share amounts)

Comprehensive income available for common stockholders		$	47		$	28

Earnings per share on comprehensive income
Basic		$	0.66		$	0.41
Diluted		$	0.65		$	0.40
Weighted average common shares outstanding
Basic			71,475,950			67,985,107
Diluted			72,512,462			69,157,614



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