Aggregate dividends declared during the period for each share of common stock outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

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Represents the period of renewal of an arrangement to provide technology services to third party.

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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended	5 Months Ended	12 Months Ended
	Mar. 15, 2016	Jan. 31, 2016	Mar. 25, 2016	Nov. 20, 2015	Dec. 31, 2015
Subsequent events
Payments of dividends					$ 17,362
Virtu Financial
Subsequent events
Payments of dividends				$ 15,000
Subsequent Events.
Subsequent events
Period of renewal of an arrangement to provide technology services to third party		1 year
Subsequent Events. \| Virtu Financial
Subsequent events
Payments of dividends			$ 55,000
Subsequent Events. \| Class A
Subsequent events
Dividends declared (in dollars per share)	$ 0.24