010000 - Document - Document and Entity Information {Elements}
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020102 - Disclosure - Risk/Return Detail Data (Virtus Emerging Markets Opportunities Fund) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020104 - Disclosure - Risk/Return Detail Data (Virtus Income & Growth Fund) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020106 - Disclosure - Risk/Return Detail Data (Virtus KAR Global Small-Cap Fund) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020108 - Disclosure - Risk/Return Detail Data (Virtus KAR Health Sciences Fund) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020110 - Disclosure - Risk/Return Detail Data (Virtus NFJ Dividend Value Fund) {Elements}
link:presentationLink
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020101 - Schedule - Risk Table {Transposed}
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020112 - Disclosure - Risk/Return Detail Data (Virtus NFJ International Value Fund) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020114 - Disclosure - Risk/Return Detail Data (Virtus NFJ Large-Cap Value Fund) {Elements}
link:presentationLink
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020101 - Schedule - Risk Table {Transposed}
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020116 - Disclosure - Risk/Return Detail Data (Virtus NFJ Mid-Cap Value Fund) {Elements}
link:presentationLink
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020101 - Schedule - Risk Table {Transposed}
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020118 - Disclosure - Risk/Return Detail Data (Virtus NFJ Small-Cap Value Fund) {Elements}
link:presentationLink
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020101 - Schedule - Risk Table {Transposed}
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020120 - Disclosure - Risk/Return Detail Data (Virtus Silvant Focused Growth Fund) {Elements}
link:presentationLink
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020101 - Schedule - Risk Table {Transposed}
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020122 - Disclosure - Risk/Return Detail Data (Virtus Silvant Mid-Cap Growth Fund) {Elements}
link:presentationLink
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020101 - Schedule - Risk Table {Transposed}
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020124 - Disclosure - Risk/Return Detail Data (Virtus Small-Cap Fund) {Elements}
link:presentationLink
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020101 - Schedule - Risk Table {Transposed}
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020126 - Disclosure - Risk/Return Detail Data (Virtus Zevenbergen Technology Fund) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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010004 - Schedule - Investment Risks {Unlabeled}
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