Document and Entity Information	Total
Prospectus:
Document Type	497
Document Period End Date	Nov. 22, 2019
Registrant Name	VIRTUS ASSET TRUST
Entity Central Index Key	0001018593
Entity Inv Company Type	N-1A
Amendment Flag	false
Document Creation Date	Nov. 22, 2019
Document Effective Date	Nov. 22, 2019
Prospectus Date	Apr. 30, 2019
Virtus Seix Investment Grade Tax-Exempt Bond Fund \| Class I
Prospectus:
Trading Symbol	STTBX
Virtus Seix Investment Grade Tax-Exempt Bond Fund \| Class A
Prospectus:
Trading Symbol	SISIX
Virtus SGA International Growth Fund \| Class R6
Prospectus:
Trading Symbol	SCIZX
Virtus SGA International Growth Fund \| Class I
Prospectus:
Trading Symbol	STITX
Virtus SGA International Growth Fund \| Class A
Prospectus:
Trading Symbol	SCIIX

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

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The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.

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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'.

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

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

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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).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Section 313

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The date of the prospectus.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Prospectus Table.

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