Regulatory Requirement - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Virtu Financial Capital Markets Llc
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum capital required to be maintained in connection with the operation of the company's DMM business	$ 1,300
Required amount under exchange rules	1,000
Required amount under exchange rules for every 0.1% NYSE transaction dollar volume	$ 75
Percentage of NYSE transaction dollar volume	0.10%
VAL
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Cash in special reserve bank accounts for the benefit of customers	$ 54,600	$ 55,500
Cash in reserve bank accounts for the benefit of proprietary accounts of brokers	8,800	8,700
Virtu Europe Trading Limited
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Deposit funds for trade	100	300
Virtu ITG Hong Kong Limited
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital settlement	$ 30	$ 30

Minimum amount of net capital required to be maintained by broker-dealer parent, calculated under Aggregate Indebtedness Standard.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Rule 15c3-1
-Number 240
-Section 15c3-1
-Publisher SEC

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Cash deposited in a special reserve account for the exclusive benefit of customers pursuant to SEC Regulations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Rule 15c3-3
-Number 240
-Section 15c3-3
-Paragraph e
-Subparagraph (1)
-Publisher SEC

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Cash deposited in a special reserve account for the exclusive benefit of customers pursuant to regulations other than SEC Regulations and the Commodity Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Rule 15c3-3
-Number 240
-Section 15c3-3
-Paragraph e
-Subparagraph (1)
-Publisher SEC

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1B

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1

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The amount of deposits held by branches of foreign institutions.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-3

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The amount of reserves held by branches of foreign institutions.

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Percentage Of NYSE Transaction Dollar Volume

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- Definition

Required Net Capital Under Exchange Act For Every Transaction Dollar Volume

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