Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Document Type	dei_DocumentType	485BPOS
Document Period End Date	dei_DocumentPeriodEndDate	Dec. 31, 2024
Registrant Name	dei_EntityRegistrantName	VIRTUS ASSET TRUST
Entity Central Index Key	dei_EntityCentralIndexKey	0001018593
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Apr. 23, 2025
Document Effective Date	dei_DocumentEffectiveDate	Apr. 28, 2025
EntityInvCompanyType	dei_EntityInvCompanyType	N-1A
Prospectus Date	rr_ProspectusDate	Apr. 28, 2025
Virtus Ceredex Large-Cap Value Equity Fund \| Class A Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SVIIX
Virtus Ceredex Large-Cap Value Equity Fund \| Class C Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SVIFX
Virtus Ceredex Large-Cap Value Equity Fund \| Class I Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	STVTX
Virtus Ceredex Large-Cap Value Equity Fund \| Class R6 Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	STVZX
Virtus Ceredex Mid-Cap Value Equity Fund \| Class A Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SAMVX
Virtus Ceredex Mid-Cap Value Equity Fund \| Class C Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SMVFX
Virtus Ceredex Mid-Cap Value Equity Fund \| Class I Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SMVTX
Virtus Ceredex Mid-Cap Value Equity Fund \| Class R6 Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SMVZX
Virtus Ceredex Small-Cap Value Equity Fund \| Class A Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SASVX
Virtus Ceredex Small-Cap Value Equity Fund \| Class C Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	STCEX
Virtus Ceredex Small-Cap Value Equity Fund \| Class I Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SCETX
Virtus Ceredex Small-Cap Value Equity Fund \| Class R6 Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	VVERX
Virtus Seix Core Bond Fund \| Class A Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	STGIX
Virtus Seix Core Bond Fund \| Class I Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	STIGX
Virtus Seix Core Bond Fund \| Class R6 Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	STGZX
Virtus Seix Floating Rate High Income Fund \| Class A Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SFRAX
Virtus Seix Floating Rate High Income Fund \| Class C Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SFRCX
Virtus Seix Floating Rate High Income Fund \| Class I Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SAMBX
Virtus Seix Floating Rate High Income Fund \| Class R6 Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SFRZX
Virtus Seix High Grade Municipal Bond Fund \| Class A Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SFLTX
Virtus Seix High Grade Municipal Bond Fund \| Class I Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SCFTX
Virtus Seix High Yield Fund \| Class A Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	HYPSX
Virtus Seix High Yield Fund \| Class I Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SAMHX
Virtus Seix High Yield Fund \| Class R6 Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	HYIZX
Virtus Seix Investment Grade Tax-Exempt Bond Fund \| Class A Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SISIX
Virtus Seix Investment Grade Tax-Exempt Bond Fund \| Class I Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	STTBX
Virtus Seix Total Return Bond Fund \| Class A Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	CBPSX
Virtus Seix Total Return Bond Fund \| Class I Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SAMFX
Virtus Seix Total Return Bond Fund \| Class R6 Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SAMZX
Virtus Seix U.S. Government Securities Ultra-Short Bond Fund \| Class A Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SSAGX
Virtus Seix U.S. Government Securities Ultra-Short Bond Fund \| Class I Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SIGVX
Virtus Seix U.S. Government Securities Ultra-Short Bond Fund \| Class R6 Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SIGZX
Virtus SGA International Growth Fund \| Class A Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SCIIX
Virtus SGA International Growth Fund \| Class C Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	VSGEX
Virtus SGA International Growth Fund \| Class I Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	STITX
Virtus SGA International Growth Fund \| Class R6 Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SCIZX
Virtus Silvant Large-Cap Growth Stock Fund \| Class A Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	STCIX
Virtus Silvant Large-Cap Growth Stock Fund \| Class I Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	STCAX
Virtus Silvant Large-Cap Growth Stock Fund \| Class R6 Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	STCZX
Virtus Zevenbergen Innovative Growth Stock Fund \| Class A Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SAGAX
Virtus Zevenbergen Innovative Growth Stock Fund \| Class I Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SCATX
Virtus Zevenbergen Innovative Growth Stock Fund \| Class R6 Shares
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	VZGRX

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

No definition available.

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Balance Type:	na
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- Definition

The date the document was made available and submitted, in YYYY-MM-DD format. The date of submission, date of acceptance by the recipient, and the document effective date are all potentially different.

+ References

No definition available.

+ Details

Name:	dei_DocumentCreationDate
Namespace Prefix:	dei_
Data Type:	xbrli:dateItemType
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- Definition

The date when a document, upon receipt and acceptance, becomes officially effective, in YYYY-MM-DD format. Usually it is a system-assigned date time value, but it may be declared by the submitter in some cases.

+ References

No definition available.

+ Details

Name:	dei_DocumentEffectiveDate
Namespace Prefix:	dei_
Data Type:	xbrli:dateItemType
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- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

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Namespace Prefix:	dei_
Data Type:	xbrli:dateItemType
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Period Type:	duration

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:	dei_DocumentType
Namespace Prefix:	dei_
Data Type:	dei:submissionTypeItemType
Balance Type:	na
Period Type:	duration

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2

+ Details

Name:	dei_EntityCentralIndexKey
Namespace Prefix:	dei_
Data Type:	dei:centralIndexKeyItemType
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Period Type:	duration

- Definition

One of: N-1A (Mutual Fund), N-1 (Open-End Separate Account with No Variable Annuities), N-2 (Closed-End Investment Company), N-3 (Separate Account Registered as Open-End Management Investment Company), N-4 (Variable Annuity UIT Separate Account), N-5 (Small Business Investment Company), N-6 (Variable Life UIT Separate Account), S-1 or S-3 (Face Amount Certificate Company), S-6 (UIT, Non-Insurance Product).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-T
-Number 232
-Section 313

+ Details

Name:	dei_EntityInvCompanyType
Namespace Prefix:	dei_
Data Type:	dei:invCompanyType
Balance Type:	na
Period Type:	duration

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2

+ Details

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Namespace Prefix:	dei_
Data Type:	xbrli:normalizedStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:	dei_TradingSymbol
Namespace Prefix:	dei_
Data Type:	dei:tradingSymbolItemType
Balance Type:	na
Period Type:	duration

- Definition

The date of the prospectus.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 1
-Subsection a
-Paragraph 3

+ Details

Name:	rr_ProspectusDate
Namespace Prefix:	rr_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	rr_RiskReturnAbstract
Namespace Prefix:	rr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration