Document and Entity Information	Total
Prospectus:
Document Type	485BPOS
Document Period End Date	Dec. 31, 2019
Entity Registrant Name	Virtus Asset Trust
Entity Central Index Key	0001018593
Entity Inv Company Type	N-1A
Amendment Flag	false
Document Creation Date	Oct. 19, 2020
Document Effective Date	Oct. 19, 2020
Prospectus Date	Oct. 19, 2020
Virtus Seix Corporate Bond Fund \| Class I
Prospectus:
Trading Symbol	STICX
Virtus Seix Corporate Bond Fund \| Class C
Prospectus:
Trading Symbol	STIFX
Virtus Seix Corporate Bond Fund \| Class A
Prospectus:
Trading Symbol	SAINX
Virtus Seix Corporate Bond Fund \| Class R6
Prospectus:
Trading Symbol	VRSBX
Virtus Zevenbergen Innovative Growth Stock Fund \| Class R6
Prospectus:
Trading Symbol	VZGRX
Virtus Zevenbergen Innovative Growth Stock Fund \| Class I
Prospectus:
Trading Symbol	SCATX
Virtus Zevenbergen Innovative Growth Stock Fund \| Class A
Prospectus:
Trading Symbol	SAGAX

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