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Receivables from/Payables to Broker-Dealers and Clearing Organizations - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Due to and from Broker-Dealers and Clearing Organizations [Abstract]
Outstanding principal balance	$ 123.2	$ 123.0

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- References

No definition available.

+ Details

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

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- Definition

Represents the carrying value of the outstanding principal balance on all of the entity's short-term credit facilities.

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No definition available.

+ Details

Name:	virt_ShortTermCreditFacilities
Namespace Prefix:	virt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant