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Label Element Value
Virtus Duff & Phelps Real Asset Fund  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk/Return [Heading] oef_RiskReturnHeading Virtus Duff & Phelps Real Asset Fund
Performance Narrative [Text Block] oef_PerformanceNarrativeTextBlock

The table showing Average Annual Total Returns in the “Performance Information” section of the Fund’s summary prospectus and the summary section of the statutory prospectus applicable to the Fund, is hereby replaced in its entirety with the following:
Index No Deduction for Fees, Expenses, or Taxes [Text] oef_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses or taxes)
Performance Table Closing [Text Block] oef_PerformanceTableClosingTextBlock

Investors should retain this supplement with the Prospectuses for future reference.
MSCI All Country World Index (net) (reflects no deduction for fees, expenses or taxes)  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 17.49%
Average Annual Return, Percent oef_AvgAnnlRtrPct 10.06%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.23%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.43%
Class A  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.53%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.36%
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.50%
Class C  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.75%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.73%
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.29%
Class I  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.81%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.80%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.34%
Class I | After Taxes on Distributions  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.41%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.26%
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.75%
Class I | After Taxes on Distributions and Sales  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.12%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.42%
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.26%
Class R6  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.83%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.28%
Performance Inception Date oef_PerfInceptionDate Jan. 31, 2022