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

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Additions made to capitalized computer software costs during the period, excluding the charges recognized in relation to the IPO.

No definition available.

Name:	virt_CapitalizedComputerSoftwareAdditionsExcludingInitialPublicOffering
Namespace Prefix:	virt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Additions made to capitalized computer software costs recognized upon the IPO.

No definition available.

Name:	virt_CapitalizedComputerSoftwareAdditionsUponInitialPublicOffering
Namespace Prefix:	virt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount charged to expense for amortization of capitalized computer software costs, excluding the charges recognized in relation to the IPO.

No definition available.

Name:	virt_CapitalizedComputerSoftwareAmortizationExcludingInitialPublicOffering
Namespace Prefix:	virt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount charged to expense for amortization of capitalized computer software costs recognized upon the IPO.

No definition available.

Name:	virt_CapitalizedComputerSoftwareAmortizationUponInitialPublicOffering
Namespace Prefix:	virt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the amount of transfers of financial instruments between levels.

No definition available.

Name:	virt_FairValueEquityTransfersBetweenLevels
Namespace Prefix:	virt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

Name:	virt_FinancialInstrumentsFairValueAbstract
Namespace Prefix:	virt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

Name:	virt_SecuritiesBorrowedAndLoanedAbstract
Namespace Prefix:	virt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Represents the minimum initial collateral advanced or received expressed as a percentage of fair value of the underlying securities borrowed or loaned.

No definition available.

Name:	virt_SecuritiesBorrowedAndSecuritiesLoanedMinimumInitialCollateralAdvancedOrReceivedExpressedAsPercentageOfFairValueOfUnderlyingSecuritiesBorrowedOrLoaned
Namespace Prefix:	virt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LeaseholdImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: