Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Class A Common Stock	Common Stock Class A Common Stock	Common Stock Class C Common Stock	Common Stock Class D Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Total Virtu Financial Inc. Stockholders' Equity	Noncontrolling Interest
Balance at beginning period (in shares) at Dec. 31, 2018			108,955,048	13,749,886	69,091,740	2,178,771
Balance at beginning of period at Dec. 31, 2018	$ 1,494,699		$ 1	$ 0	$ 1	$ (55,005)	$ 1,010,468	$ 96,513	$ (82)	$ 1,051,896	$ 442,803
Increase (decrease) in stockholder's/members' equity
Share based compensation (in shares)			2,226,676
Share based compensation	72,381						72,381			72,381
Repurchase of Class C common stock (in shares)				(9,541)
Repurchase of Class C common stock	(196)						(196)			(196)
Treasury stock purchases (in shares)			(720,323)			0
Treasury stock purchases	(15,878)					$ 0		(15,878)		(15,878)
Stock options exercised (in shares)			121,344
Stock options exercised	931						931			931
Net Income (loss)	(103,705)							(58,595)		(58,595)	(45,110)
Foreign exchange translation adjustment	(1,475)								(565)	(565)	(910)
Net change in unrealized cash flow hedges gains (losses)	0
Dividends	(211,635)							(112,414)		(112,414)	(99,221)
Issuance of common stock in connection with employee exchanges (in shares)			853,167
Issuance of common stock in connection with secondary offering, net of offering costs (in shares)			9,000,000		(9,000,000)
Issuance of Common Stock in connection with secondary offering, net of offering costs	(375)						(375)			(375)
Repurchase of virtu financial units and corresponding number of Class C common stock in connection with employee exchanges (in shares)				(853,167)
Issuance of tax receivable agreements in connection with employee exchange	(5,811)						(5,811)			(5,811)
Balance at end of period (in shares) at Dec. 31, 2019			120,435,912	12,887,178	60,091,740	2,178,771
Balance at end of period at Dec. 31, 2019	1,228,936		$ 1	$ 0	$ 1	$ (55,005)	1,077,398	(90,374)	(647)	931,374	297,562
Increase (decrease) in stockholder's/members' equity
Share based compensation (in shares)			2,489,483
Share based compensation	56,629						56,629			56,629
Repurchase of Class C common stock	0						0			0
Treasury stock purchases (in shares)			(867,984)			(1,436,326)
Treasury stock purchases	(49,864)					$ (33,918)		(15,946)		(49,864)
Stock options exercised (in shares)			909,627
Stock options exercised	16,440						16,440			16,440
Warrants issued	11,488						11,488			11,488
Net Income (loss)	1,120,913							649,197		649,197	471,716
Foreign exchange translation adjustment	15,318								8,604	8,604	6,714
Net change in unrealized cash flow hedges gains (losses)	(59,019)								(33,444)	(33,444)	(25,575)
Dividends	(484,415)							(120,496)		(120,496)	(363,919)
Issuance of common stock in connection with employee exchanges (in shares)			2,660,239
Repurchase of virtu financial units and corresponding number of Class C common stock in connection with employee exchanges (in shares)				(2,660,239)
Issuance of tax receivable agreements in connection with employee exchange	(1,388)						(1,388)			(1,388)
Balance at end of period (in shares) at Dec. 31, 2020			125,627,277	10,226,939	60,091,740	3,615,097
Balance at end of period at Dec. 31, 2020	1,855,038		$ 1	$ 0	$ 1	$ (88,923)	1,160,567	422,381	(25,487)	1,468,540	386,498
Increase (decrease) in stockholder's/members' equity
Share based compensation (in shares)			2,434,251
Share based compensation	55,654						55,654			55,654
Repurchase of Class C common stock (in shares)				(120,025)
Repurchase of Class C common stock	(3,455)	$ (16,100)					(3,455)			(3,455)
Treasury stock purchases (in shares)			(840,229)			(14,711,766)
Treasury stock purchases	(427,453)	$ (439,100)				$ (405,152)		(22,301)		(427,453)
Stock options exercised (in shares)			528,497
Warrants exercised (in shares)			3,000,000
Warrants exercised	68,940							68,940		68,940
Stock options exercised	10,042						10,042			10,042
Net Income (loss)	827,234							476,878		476,878	350,356
Foreign exchange translation adjustment	(12,470)								(7,673)	(7,673)	(4,797)
Net change in unrealized cash flow hedges gains (losses)	37,794								22,964	22,964	14,830
Dividends	(548,017)							(115,360)		(115,360)	(432,657)
Issuance of common stock in connection with employee exchanges (in shares)			747,849
Repurchase of virtu financial units and corresponding number of Class C common stock in connection with employee exchanges (in shares)				(747,849)
Issuance of tax receivable agreements in connection with employee exchange	311						311			311
Balance at end of period (in shares) at Dec. 31, 2021			131,497,645	9,359,065	60,091,740	18,326,863
Balance at end of period at Dec. 31, 2021	$ 1,863,618		$ 1	$ 0	$ 1	$ (494,075)	$ 1,223,119	$ 830,538	$ (10,196)	$ 1,549,388	$ 314,230