Performance Management |
Jun. 30, 2026 |
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| Virtus Emerging Markets Opportunities Fund | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | ||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the potential risks of investing in the fund. The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. The bar chart shows changes in the fund’s performance from year to year over a 10-year period. The table shows how the fund’s average annual returns compare to those of a broad-based securities market index. Updated performance information is available at virtus.com or by calling 800-243-1574. |
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| Performance Past Does Not Indicate Future [Text] | The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. | ||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the potential risks of investing in the fund. | ||||||||||||||||
| Performance Additional Market Index [Text] | The MSCI Emerging Markets Index (net) is a free float-adjusted market capitalization-weighted index designed to measure equity market performance in the global emerging markets. The index is calculated on a total return basis with net dividends reinvested. The index is unmanaged and not available for direct investment. | ||||||||||||||||
| Bar Chart Does Not Reflect Sales Loads [Text] | Returns do not reflect sales charges applicable to other share classes and would be lower if they did. | ||||||||||||||||
| Bar Chart [Heading] | Calendar year total returns for Institutional Class Shares | ||||||||||||||||
| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns (for the periods ended 12/31/25) | ||||||||||||||||
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. | ||||||||||||||||
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance Table Explanation after Tax Higher | In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. | ||||||||||||||||
| Performance [Table] | |||||||||||||||||
| Performance Table One Class of after Tax Shown [Text] | After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. | ||||||||||||||||
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees or expenses) | ||||||||||||||||
| Performance Table Closing [Text Block] | The MSCI Emerging Markets Index (net) is a free float-adjusted market capitalization-weighted index designed to measure equity market performance in the global emerging markets. The index is calculated on a total return basis with net dividends reinvested. The index is unmanaged and not available for direct investment. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. |
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| Performance Availability Website Address [Text] | virtus.com | ||||||||||||||||
| Performance Availability Phone [Text] | 800-243-1574 | ||||||||||||||||
| Virtus Emerging Markets Opportunities Fund | Institutional Class Shares | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Year to Date Return, Label [Optional Text] | Year to Date | ||||||||||||||||
| Bar Chart, Year to Date Return | 35.83% | ||||||||||||||||
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 | ||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||||||
| Highest Quarterly Return | 19.07% | ||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2020 | ||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||||||
| Lowest Quarterly Return | (23.46%) | ||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2020 | ||||||||||||||||
| Virtus Income & Growth Fund | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | ||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the potential risks of investing in the fund. The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. The bar chart shows changes in the fund’s performance from year to year over a 10-year period. The table shows how the fund’s average annual returns compare to those of two broad-based securities market indexes. Updated performance information is available at virtus.com or by calling 800-243-1574. |
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| Performance Past Does Not Indicate Future [Text] | The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. | ||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the potential risks of investing in the fund. | ||||||||||||||||
| Performance Additional Market Index [Text] | The Bloomberg US Aggregate Bond Index measures the U.S. investment grade fixed rate bond market. The index is calculated on a total return basis. The indexes are unmanaged and not available for direct investment. | ||||||||||||||||
| Bar Chart Does Not Reflect Sales Loads [Text] | Returns do not reflect sales charges applicable to other share classes and would be lower if they did. | ||||||||||||||||
| Bar Chart [Heading] | Calendar year total returns for Institutional Class Shares | ||||||||||||||||
| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns (for the periods ended 12/31/25) | ||||||||||||||||
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance [Table] | |||||||||||||||||
| Performance Table One Class of after Tax Shown [Text] | After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. | ||||||||||||||||
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) | ||||||||||||||||
| Performance Table Closing [Text Block] | The S&P 500® Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total return basis with dividends reinvested. The Bloomberg US Aggregate Bond Index measures the U.S. investment grade fixed rate bond market. The index is calculated on a total return basis. The indexes are unmanaged and not available for direct investment. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. |
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| Performance Availability Website Address [Text] | virtus.com | ||||||||||||||||
| Performance Availability Phone [Text] | 800-243-1574 | ||||||||||||||||
| Virtus Income & Growth Fund | Institutional Class Shares | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Year to Date Return, Label [Optional Text] | Year to Date | ||||||||||||||||
| Bar Chart, Year to Date Return | 5.51% | ||||||||||||||||
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 | ||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||||||
| Highest Quarterly Return | 17.98% | ||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2020 | ||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||||||
| Lowest Quarterly Return | (14.97%) | ||||||||||||||||
| Lowest Quarterly Return, Date | Jun. 30, 2022 | ||||||||||||||||
| Virtus KAR Global Small-Cap Fund | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | ||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the potential risks of investing in the fund. The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. The current subadviser commenced providing services for the fund in July 2022 and therefore the returns shown in the table for periods prior to that date reflect the performance of other investment professionals. The bar chart shows changes in the fund’s performance from year to year over a 10-year period. The table shows how the fund’s average annual returns compare to those of a broad-based securities market index and a style-specific index that reflects the market sectors in which the fund invests. Updated performance information is available at virtus.com or by calling 800-243-1574. |
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| Performance Past Does Not Indicate Future [Text] | The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. | ||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the potential risks of investing in the fund. | ||||||||||||||||
| Performance Additional Market Index [Text] | The MSCI ACWI Index (net) is a free float-adjusted market capitalization-weighted index that measures equity performance of developed and emerging markets. The MSCI ACWI Index (net) is calculated on a total return basis with net dividends reinvested. The index is unmanaged and not available for direct investment. | ||||||||||||||||
| Bar Chart Does Not Reflect Sales Loads [Text] | Returns do not reflect sales charges applicable to other share classes and would be lower if they did. | ||||||||||||||||
| Bar Chart [Heading] | Calendar year total returns for Institutional Class Shares | ||||||||||||||||
| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns (for the periods ended 12/31/25) | ||||||||||||||||
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. | ||||||||||||||||
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance Table Explanation after Tax Higher | In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. | ||||||||||||||||
| Performance [Table] | |||||||||||||||||
| Performance Table One Class of after Tax Shown [Text] | After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. | ||||||||||||||||
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees or expenses) | ||||||||||||||||
| Performance Table Closing [Text Block] | The MSCI ACWI Index (net) is a free float-adjusted market capitalization-weighted index that measures equity performance of developed and emerging markets. The MSCI ACWI Index (net) is calculated on a total return basis with net dividends reinvested. The index is unmanaged and not available for direct investment. The MSCI ACWI Small Cap Index (net) is a free float-adjusted market capitalization-weighted index that measures small cap equity performance of developed and emerging markets. The index is calculated on a total return basis with net dividends reinvested. The index is unmanaged and not available for direct investment. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. |
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| Performance Availability Website Address [Text] | virtus.com | ||||||||||||||||
| Performance Availability Phone [Text] | 800-243-1574 | ||||||||||||||||
| Virtus KAR Global Small-Cap Fund | Institutional Class Shares | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Year to Date Return, Label [Optional Text] | Year to Date | ||||||||||||||||
| Bar Chart, Year to Date Return | (0.22%) | ||||||||||||||||
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 | ||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||||||
| Highest Quarterly Return | 27.60% | ||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2020 | ||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||||||
| Lowest Quarterly Return | (26.34%) | ||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2020 | ||||||||||||||||
| Virtus KAR Health Sciences Fund | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | ||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the potential risks of investing in the fund. The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. The current subadviser commenced providing services for the fund in July 2022 and therefore the returns shown in the table for periods prior to that date reflect the performance of other investment professionals. The bar chart shows changes in the fund’s performance from year to year over a 10-year period. The table shows how the fund’s average annual returns compare to those of a broad-based securities market index and a style-specific index that reflects the market sectors in which the fund invests. Updated performance information is available at virtus.com or by calling 800-243-1574. |
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| Performance Past Does Not Indicate Future [Text] | The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. | ||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the potential risks of investing in the fund. | ||||||||||||||||
| Performance Additional Market Index [Text] | The Russell 3000® Health Care Index is a free float-adjusted market capitalization-weighted index of companies involved in medical services or healthcare in the Russell 3000® Index, which includes the largest 3,000 US companies as determined by total market capitalization. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. | ||||||||||||||||
| Bar Chart Does Not Reflect Sales Loads [Text] | Returns do not reflect sales charges applicable to other share classes and would be lower if they did. | ||||||||||||||||
| Bar Chart [Heading] | Calendar year total returns for Institutional Class Shares | ||||||||||||||||
| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns (for the periods ended 12/31/25) | ||||||||||||||||
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. | ||||||||||||||||
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance Table Explanation after Tax Higher | In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. | ||||||||||||||||
| Performance [Table] | |||||||||||||||||
| Performance Table One Class of after Tax Shown [Text] | After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. | ||||||||||||||||
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) | ||||||||||||||||
| Performance Table Closing [Text Block] | The Wilshire 5000 Total Market Index (formerly known as the FT Wilshire 5000 Index) is a broad-based free-float market capitalization-weighted index that aims to capture 100% of the U.S. investable market capitalization. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. The Russell 3000® Health Care Index is a free float-adjusted market capitalization-weighted index of companies involved in medical services or healthcare in the Russell 3000® Index, which includes the largest 3,000 US companies as determined by total market capitalization. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. |
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| Performance Availability Website Address [Text] | virtus.com | ||||||||||||||||
| Performance Availability Phone [Text] | 800-243-1574 | ||||||||||||||||
| Virtus KAR Health Sciences Fund | Institutional Class Shares | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Year to Date Return, Label [Optional Text] | Year to Date | ||||||||||||||||
| Bar Chart, Year to Date Return | 1.17% | ||||||||||||||||
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 | ||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||||||
| Highest Quarterly Return | 16.54% | ||||||||||||||||
| Highest Quarterly Return, Date | Dec. 31, 2019 | ||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||||||
| Lowest Quarterly Return | (11.80%) | ||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2020 | ||||||||||||||||
| Virtus NFJ Dividend Value Fund | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | ||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the potential risks of investing in the fund. The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. The bar chart shows changes in the fund’s performance from year to year over a 10-year period. The table shows how the fund’s average annual returns compare to those of a broad-based securities market index and a style-specific index that reflects the market sectors in which the fund invests. Updated performance information is available at virtus.com or by calling 800-243-1574. |
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| Performance Past Does Not Indicate Future [Text] | The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. | ||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the potential risks of investing in the fund. | ||||||||||||||||
| Performance Additional Market Index [Text] | The Russell 1000® Value Index is a free float-adjusted market capitalization-weighted index of value-oriented stocks of the 1,000 largest companies in the Russell Universe, which comprises the 3,000 largest U.S. companies. Effective March 24, 2025, the index applies a capping methodology. Index constituents are capped quarterly so that no more than 22.5% of the index weight may be allocated to a single constituent, and the sum of the weights of all constituents representing more than 4.5% of the index should not exceed 45% of the total index weight. For periods prior to March 24, 2025, the index was uncapped. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. | ||||||||||||||||
| Bar Chart Does Not Reflect Sales Loads [Text] | Returns do not reflect sales charges applicable to other share classes and would be lower if they did. | ||||||||||||||||
| Bar Chart [Heading] | Calendar year total returns for Institutional Class Shares | ||||||||||||||||
| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns (for the periods ended 12/31/25) | ||||||||||||||||
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. | ||||||||||||||||
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance Table Explanation after Tax Higher | In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. | ||||||||||||||||
| Performance [Table] | |||||||||||||||||
| Performance Table One Class of after Tax Shown [Text] | After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. | ||||||||||||||||
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) | ||||||||||||||||
| Performance Table Closing [Text Block] | The Wilshire 5000 Total Market Index (formerly known as the FT Wilshire 5000 Index) is a broad-based free-float market capitalization-weighted index that aims to capture 100% of the U.S. investable market capitalization. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. The Russell 1000® Value Index is a free float-adjusted market capitalization-weighted index of value-oriented stocks of the 1,000 largest companies in the Russell Universe, which comprises the 3,000 largest U.S. companies. Effective March 24, 2025, the index applies a capping methodology. Index constituents are capped quarterly so that no more than 22.5% of the index weight may be allocated to a single constituent, and the sum of the weights of all constituents representing more than 4.5% of the index should not exceed 45% of the total index weight. For periods prior to March 24, 2025, the index was uncapped. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. |
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| Performance Availability Website Address [Text] | virtus.com | ||||||||||||||||
| Performance Availability Phone [Text] | 800-243-1574 | ||||||||||||||||
| Virtus NFJ Dividend Value Fund | Institutional Class Shares | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Year to Date Return, Label [Optional Text] | Year to Date | ||||||||||||||||
| Bar Chart, Year to Date Return | 19.31% | ||||||||||||||||
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 | ||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||||||
| Highest Quarterly Return | 14.87% | ||||||||||||||||
| Highest Quarterly Return, Date | Dec. 31, 2023 | ||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||||||
| Lowest Quarterly Return | (26.23%) | ||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2020 | ||||||||||||||||
| Virtus NFJ International Value Fund | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | ||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the potential risks of investing in the fund. The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. The bar chart shows changes in the fund’s performance from year to year over a 10-year period. The table shows how the fund’s average annual returns compare to those of a broad-based securities market index. Updated performance information is available at virtus.com or by calling 800-243-1574. |
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| Performance Past Does Not Indicate Future [Text] | The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. | ||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the potential risks of investing in the fund. | ||||||||||||||||
| Performance Additional Market Index [Text] | The MSCI ACWI ex USA Index (net) is a free float-adjusted market capitalization-weighted index that measures equity performance of developed and emerging markets, excluding the United States. The index is calculated on a total return basis with net dividends reinvested. The index is unmanaged and not available for direct investment. | ||||||||||||||||
| Bar Chart Does Not Reflect Sales Loads [Text] | Returns do not reflect sales charges applicable to other share classes and would be lower if they did. | ||||||||||||||||
| Bar Chart [Heading] | Calendar year total returns for Institutional Class Shares | ||||||||||||||||
| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns (for the periods ended 12/31/25) | ||||||||||||||||
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. | ||||||||||||||||
| Performance Table Explanation after Tax Higher | In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. | ||||||||||||||||
| Performance [Table] | |||||||||||||||||
| Performance Table One Class of after Tax Shown [Text] | After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. | ||||||||||||||||
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees or expenses) | ||||||||||||||||
| Performance Table Closing [Text Block] | The MSCI ACWI ex USA Index (net) is a free float-adjusted market capitalization-weighted index that measures equity performance of developed and emerging markets, excluding the United States. The index is calculated on a total return basis with net dividends reinvested. The index is unmanaged and not available for direct investment. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non- taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. |
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| Performance Availability Website Address [Text] | virtus.com | ||||||||||||||||
| Performance Availability Phone [Text] | 800-243-1574 | ||||||||||||||||
| Virtus NFJ International Value Fund | Institutional Class Shares | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Year to Date Return, Label [Optional Text] | Year to Date | ||||||||||||||||
| Bar Chart, Year to Date Return | 17.76% | ||||||||||||||||
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 | ||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||||||
| Highest Quarterly Return | 20.11% | ||||||||||||||||
| Highest Quarterly Return, Date | Dec. 31, 2022 | ||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||||||
| Lowest Quarterly Return | (23.81%) | ||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2020 | ||||||||||||||||
| Virtus NFJ Large-Cap Value Fund | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | ||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the potential risks of investing in the fund. The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. The bar chart shows changes in the fund’s performance from year to year over a 10-year period. The table shows how the fund’s average annual returns compare to those of a broad-based securities market index and a style-specific index that reflects the market sectors in which the fund invests. Updated performance information is available at virtus.com or by calling 800-243-1574. |
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| Performance Past Does Not Indicate Future [Text] | The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. | ||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the potential risks of investing in the fund. | ||||||||||||||||
| Performance Additional Market Index [Text] | The Russell 1000® Value Index is a free float-adjusted market capitalization-weighted index of value-oriented stocks of the 1,000 largest companies in the Russell Universe, which comprises the 3,000 largest U.S. companies. Effective March 24, 2025, the index applies a capping methodology. Index constituents are capped quarterly so that no more than 22.5% of the index weight may be allocated to a single constituent, and the sum of the weights of all constituents representing more than 4.5% of the index should not exceed 45% of the total index weight. For periods prior to March 24, 2025, the index was uncapped. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. | ||||||||||||||||
| Bar Chart Does Not Reflect Sales Loads [Text] | Returns do not reflect sales charges applicable to other share classes and would be lower if they did. | ||||||||||||||||
| Bar Chart [Heading] | Calendar year total returns for Institutional Class Shares | ||||||||||||||||
| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns (for the periods ended 12/31/25) | ||||||||||||||||
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. | ||||||||||||||||
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance Table Explanation after Tax Higher | In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. | ||||||||||||||||
| Performance [Table] | |||||||||||||||||
| Performance Table One Class of after Tax Shown [Text] | After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. | ||||||||||||||||
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) | ||||||||||||||||
| Performance Table Closing [Text Block] | The Wilshire 5000 Total Market Index (formerly known as the FT Wilshire 5000 Index) is a broad-based free-float market capitalization-weighted index that aims to capture 100% of the U.S. investable market capitalization. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. The Russell 1000® Value Index is a free float-adjusted market capitalization-weighted index of value-oriented stocks of the 1,000 largest companies in the Russell Universe, which comprises the 3,000 largest U.S. companies. Effective March 24, 2025, the index applies a capping methodology. Index constituents are capped quarterly so that no more than 22.5% of the index weight may be allocated to a single constituent, and the sum of the weights of all constituents representing more than 4.5% of the index should not exceed 45% of the total index weight. For periods prior to March 24, 2025, the index was uncapped. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. |
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| Performance Availability Website Address [Text] | virtus.com | ||||||||||||||||
| Performance Availability Phone [Text] | 800-243-1574 | ||||||||||||||||
| Virtus NFJ Large-Cap Value Fund | Institutional Class Shares | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Year to Date Return, Label [Optional Text] | Year to Date | ||||||||||||||||
| Bar Chart, Year to Date Return | 18.05% | ||||||||||||||||
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 | ||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||||||
| Highest Quarterly Return | 15.67% | ||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2020 | ||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||||||
| Lowest Quarterly Return | (25.54%) | ||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2020 | ||||||||||||||||
| Virtus NFJ Mid-Cap Value Fund | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | ||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the potential risks of investing in the fund. The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. The bar chart shows changes in the fund’s performance from year to year over a 10-year period. The table shows how the fund’s average annual returns compare to those of a broad-based securities market index and a style-specific index that reflects the market sectors in which the fund invests. Updated performance information is available at virtus.com or by calling 800-243-1574. |
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| Performance Past Does Not Indicate Future [Text] | The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. | ||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the potential risks of investing in the fund. | ||||||||||||||||
| Performance Additional Market Index [Text] | The Russell Midcap® Value Index is a free float-adjusted market capitalization-weighted index of medium-capitalization, value-oriented stocks. Effective March 24, 2025, the index applies a capping methodology. Index constituents are capped quarterly so that no more than 22.5% of the index weight may be allocated to a single constituent, and the sum of the weights of all constituents representing more than 4.5% of the index should not exceed 45% of the total index weight. For periods prior to March 24, 2025, the index was uncapped. The index is calculated on a total-return basis with dividends reinvested. The index is unmanaged and not available for direct investment. | ||||||||||||||||
| Bar Chart Does Not Reflect Sales Loads [Text] | Returns do not reflect sales charges applicable to other share classes and would be lower if they did. | ||||||||||||||||
| Bar Chart [Heading] | Calendar year total returns for Institutional Class Shares | ||||||||||||||||
| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns (for the periods ended 12/31/25) | ||||||||||||||||
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. | ||||||||||||||||
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance Table Explanation after Tax Higher | In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. | ||||||||||||||||
| Performance [Table] | |||||||||||||||||
| Performance Table One Class of after Tax Shown [Text] | After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. | ||||||||||||||||
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) | ||||||||||||||||
| Performance Table Closing [Text Block] | The Wilshire 5000 Total Market Index (formerly known as the FT Wilshire 5000 Index) is a broad-based free-float market capitalization-weighted index that aims to capture 100% of the U.S. investable market capitalization. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. The Russell Midcap® Value Index is a free float-adjusted market capitalization-weighted index of medium-capitalization, value-oriented stocks. Effective March 24, 2025, the index applies a capping methodology. Index constituents are capped quarterly so that no more than 22.5% of the index weight may be allocated to a single constituent, and the sum of the weights of all constituents representing more than 4.5% of the index should not exceed 45% of the total index weight. For periods prior to March 24, 2025, the index was uncapped. The index is calculated on a total-return basis with dividends reinvested. The index is unmanaged and not available for direct investment. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. |
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| Performance Availability Website Address [Text] | virtus.com | ||||||||||||||||
| Performance Availability Phone [Text] | 800-243-1574 | ||||||||||||||||
| Virtus NFJ Mid-Cap Value Fund | Institutional Class Shares | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Year to Date Return, Label [Optional Text] | Year to Date | ||||||||||||||||
| Bar Chart, Year to Date Return | 13.39% | ||||||||||||||||
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 | ||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||||||
| Highest Quarterly Return | 16.58% | ||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2020 | ||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||||||
| Lowest Quarterly Return | (28.04%) | ||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2020 | ||||||||||||||||
| Virtus NFJ Small-Cap Value Fund | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | ||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the potential risks of investing in the fund. The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. The bar chart shows changes in the fund’s performance from year to year over a 10-year period. The table shows how the fund’s average annual returns compare to those of a broad-based securities market index and a style-specific index that reflects the market sectors in which the fund invests. Updated performance information is available at virtus.com or by calling 800-243-1574. |
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| Performance Past Does Not Indicate Future [Text] | The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. | ||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the potential risks of investing in the fund. | ||||||||||||||||
| Performance Additional Market Index [Text] | The Russell 2000® Value Index is a free float-adjusted market capitalization-weighted index of value-oriented stocks of the smallest 2,000 companies in the Russell universe, which comprises the 3,000 largest U.S. companies. Effective March 24, 2025, the index applies a capping methodology. Index constituents are capped quarterly so that no more than 22.5% of the index weight may be allocated to a single constituent, and the sum of the weights of all constituents representing more than 4.5% of the index should not exceed 45% of the total index weight. For periods prior to March 24, 2025, the index was uncapped. The index is calculated on a total-return basis with dividends reinvested. The index is unmanaged and not available for direct investment. | ||||||||||||||||
| Bar Chart Does Not Reflect Sales Loads [Text] | Returns do not reflect sales charges applicable to other share classes and would be lower if they did. | ||||||||||||||||
| Bar Chart [Heading] | Calendar year total returns for Institutional Class Shares | ||||||||||||||||
| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns (for the periods ended 12/31/25) | ||||||||||||||||
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. | ||||||||||||||||
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance Table Explanation after Tax Higher | In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. | ||||||||||||||||
| Performance [Table] | |||||||||||||||||
| Performance Table One Class of after Tax Shown [Text] | After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. | ||||||||||||||||
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) | ||||||||||||||||
| Performance Table Closing [Text Block] | The Wilshire 5000 Total Market Index (formerly known as the FT Wilshire 5000 Index) is a broad-based free-float market capitalization-weighted index that aims to capture 100% of the U.S. investable market capitalization. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. The Russell 2000® Value Index is a free float-adjusted market capitalization-weighted index of value-oriented stocks of the smallest 2,000 companies in the Russell universe, which comprises the 3,000 largest U.S. companies. Effective March 24, 2025, the index applies a capping methodology. Index constituents are capped quarterly so that no more than 22.5% of the index weight may be allocated to a single constituent, and the sum of the weights of all constituents representing more than 4.5% of the index should not exceed 45% of the total index weight. For periods prior to March 24, 2025, the index was uncapped. The index is calculated on a total-return basis with dividends reinvested. The index is unmanaged and not available for direct investment. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return. |
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| Performance Availability Website Address [Text] | virtus.com | ||||||||||||||||
| Performance Availability Phone [Text] | 800-243-1574 | ||||||||||||||||
| Virtus NFJ Small-Cap Value Fund | Institutional Class Shares | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Year to Date Return, Label [Optional Text] | Year to Date | ||||||||||||||||
| Bar Chart, Year to Date Return | 12.28% | ||||||||||||||||
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 | ||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||||||
| Highest Quarterly Return | 23.37% | ||||||||||||||||
| Highest Quarterly Return, Date | Dec. 31, 2020 | ||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||||||
| Lowest Quarterly Return | (32.42%) | ||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2020 | ||||||||||||||||
| Virtus Silvant Focused Growth Fund | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | ||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the potential risks of investing in the fund. The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. The current subadviser commenced providing services for the fund in July 2022 and therefore the returns shown in the table for periods prior to that date reflect the performance of other investment professionals. The bar chart shows changes in the fund’s performance from year to year over a 10-year period. The table shows how the fund’s average annual returns compare to those of a broad-based securities market index and a style-specific index that reflects the market sectors in which the fund invests. Updated performance information is available at virtus.com or by calling 800-243-1574. |
||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. | ||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the potential risks of investing in the fund. | ||||||||||||||||
| Performance Additional Market Index [Text] | The Russell 1000® Growth Index is a free float-adjusted market capitalization-weighted index of growth-oriented stocks of the 1,000 largest companies in the Russell universe, which comprises the 3,000 largest U.S. companies. Effective March 24, 2025, the index applies a capping methodology. Index constituents are capped quarterly so that no more than 22.5% of the index weight may be allocated to a single constituent, and the sum of the weights of all constituents representing more than 4.5% of the index should not exceed 45% of the total index weight. For periods prior to March 24, 2025, the index was uncapped. The index is calculated on a total-return basis with dividends reinvested. The index is unmanaged and not available for direct investment. | ||||||||||||||||
| Bar Chart Does Not Reflect Sales Loads [Text] | Returns do not reflect sales charges applicable to other share classes and would be lower if they did. | ||||||||||||||||
| Bar Chart [Heading] | Calendar year total returns for Institutional Class Shares | ||||||||||||||||
| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns (for the periods ended 12/31/25) | ||||||||||||||||
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance [Table] | |||||||||||||||||
| Performance Table One Class of after Tax Shown [Text] | After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. | ||||||||||||||||
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) | ||||||||||||||||
| Performance Table Closing [Text Block] | The Wilshire 5000 Total Market Index (formerly known as the FT Wilshire 5000 Index) is a broad-based free-float market capitalization-weighted index that aims to capture 100% of the U.S. investable market capitalization. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. The Russell 1000® Growth Index is a free float-adjusted market capitalization-weighted index of growth-oriented stocks of the 1,000 largest companies in the Russell universe, which comprises the 3,000 largest U.S. companies. Effective March 24, 2025, the index applies a capping methodology. Index constituents are capped quarterly so that no more than 22.5% of the index weight may be allocated to a single constituent, and the sum of the weights of all constituents representing more than 4.5% of the index should not exceed 45% of the total index weight. For periods prior to March 24, 2025, the index was uncapped. The index is calculated on a total-return basis with dividends reinvested. The index is unmanaged and not available for direct investment. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. |
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| Performance Availability Website Address [Text] | virtus.com | ||||||||||||||||
| Performance Availability Phone [Text] | 800-243-1574 | ||||||||||||||||
| Virtus Silvant Focused Growth Fund | Institutional Class Shares | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Year to Date Return, Label [Optional Text] | Year to Date | ||||||||||||||||
| Bar Chart, Year to Date Return | 2.53% | ||||||||||||||||
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 | ||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||||||
| Highest Quarterly Return | 30.97% | ||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2020 | ||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||||||
| Lowest Quarterly Return | (23.08%) | ||||||||||||||||
| Lowest Quarterly Return, Date | Jun. 30, 2022 | ||||||||||||||||
| Virtus Silvant Mid-Cap Growth Fund | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | ||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the potential risks of investing in the fund. The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. The current subadviser commenced providing services for the fund in July 2022 and therefore the returns shown in the table for periods prior to that date reflect the performance of other investment professionals. The bar chart shows changes in the fund’s performance from year to year over a 10-year period. The table shows how the fund’s average annual returns compare to those of a broad-based securities market index and a style-specific index that reflects the market sectors in which the fund invests. Updated performance information is available at virtus.com or by calling 800-243-1574. |
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| Performance Past Does Not Indicate Future [Text] | The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. | ||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the potential risks of investing in the fund. | ||||||||||||||||
| Performance Additional Market Index [Text] | The Russell Midcap® Growth Index is a free float-adjusted market capitalization-weighted index of medium-capitalization, growth-oriented stocks of U.S. companies. The index is calculated on a total-return basis with dividends reinvested. Effective March 24, 2025, the index applies a capping methodology. Index constituents are capped quarterly so that no more than 22.5% of the index weight may be allocated to a single constituent, and the sum of the weights of all constituents representing more than 4.5% of the index should not exceed 45% of the total index weight. For periods prior to March 24, 2025, the index was uncapped. The index is unmanaged and not available for direct investment. | ||||||||||||||||
| Bar Chart Does Not Reflect Sales Loads [Text] | Returns do not reflect sales charges applicable to other share classes and would be lower if they did. | ||||||||||||||||
| Bar Chart [Heading] | Calendar year total returns for Institutional Class Shares | ||||||||||||||||
| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns (for the periods ended 12/31/25) | ||||||||||||||||
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance [Table] | |||||||||||||||||
| Performance Table One Class of after Tax Shown [Text] | After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. | ||||||||||||||||
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) | ||||||||||||||||
| Performance Table Closing [Text Block] | The Wilshire 5000 Total Market Index (formerly known as the FT Wilshire 5000 Index) is a broad-based free-float market capitalization-weighted index that aims to capture 100% of the U.S. investable market capitalization. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. The Russell Midcap® Growth Index is a free float-adjusted market capitalization-weighted index of medium-capitalization, growth-oriented stocks of U.S. companies. The index is calculated on a total-return basis with dividends reinvested. Effective March 24, 2025, the index applies a capping methodology. Index constituents are capped quarterly so that no more than 22.5% of the index weight may be allocated to a single constituent, and the sum of the weights of all constituents representing more than 4.5% of the index should not exceed 45% of the total index weight. For periods prior to March 24, 2025, the index was uncapped. The index is unmanaged and not available for direct investment. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. |
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| Performance Availability Website Address [Text] | virtus.com | ||||||||||||||||
| Performance Availability Phone [Text] | 800-243-1574 | ||||||||||||||||
| Virtus Silvant Mid-Cap Growth Fund | Institutional Class Shares | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Year to Date Return, Label [Optional Text] | Year to Date | ||||||||||||||||
| Bar Chart, Year to Date Return | 10.05% | ||||||||||||||||
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 | ||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||||||
| Highest Quarterly Return | 32.90% | ||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2020 | ||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||||||
| Lowest Quarterly Return | (24.08%) | ||||||||||||||||
| Lowest Quarterly Return, Date | Jun. 30, 2022 | ||||||||||||||||
| Virtus Small-Cap Fund | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | ||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the potential risks of investing in the fund. The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. The bar chart shows changes in the fund’s performance from year to year over a 10-year period. The table shows how the fund’s average annual returns compare to those of a broad-based securities market index and a style-specific index that reflects the market sectors in which the fund invests. Updated performance information is available at virtus.com or by calling 800-243-1574. |
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| Performance Past Does Not Indicate Future [Text] | The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. | ||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the potential risks of investing in the fund. | ||||||||||||||||
| Performance Additional Market Index [Text] | The Russell 2000® Index is a free float-adjusted market capitalization-weighted index of the 2,000 smallest companies in the Russell Universe, which comprises the 3,000 largest U.S. companies. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. | ||||||||||||||||
| Bar Chart Does Not Reflect Sales Loads [Text] | Returns do not reflect sales charges applicable to other share classes and would be lower if they did. | ||||||||||||||||
| Bar Chart [Heading] | Calendar year total returns for Institutional Class Shares | ||||||||||||||||
| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns (for the periods ended 12/31/25) | ||||||||||||||||
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance [Table] | |||||||||||||||||
| Performance Table One Class of after Tax Shown [Text] | After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. | ||||||||||||||||
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) | ||||||||||||||||
| Performance Table Closing [Text Block] | The Wilshire 5000 Total Market Index (formerly known as the FT Wilshire 5000 Index) is a broad-based free-float market capitalization-weighted index that aims to capture 100% of the U.S. investable market capitalization. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. The Russell 2000® Index is a free float-adjusted market capitalization-weighted index of the 2,000 smallest companies in the Russell Universe, which comprises the 3,000 largest U.S. companies. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. |
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| Performance Availability Website Address [Text] | virtus.com | ||||||||||||||||
| Performance Availability Phone [Text] | 800-243-1574 | ||||||||||||||||
| Virtus Small-Cap Fund | Institutional Class Shares | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Year to Date Return, Label [Optional Text] | Year to Date | ||||||||||||||||
| Bar Chart, Year to Date Return | 16.25% | ||||||||||||||||
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 | ||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||||||
| Highest Quarterly Return | 23.60% | ||||||||||||||||
| Highest Quarterly Return, Date | Dec. 31, 2020 | ||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||||||
| Lowest Quarterly Return | (28.46%) | ||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2020 | ||||||||||||||||
| Virtus Zevenbergen Technology Fund | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | ||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the potential risks of investing in the fund. The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. The current subadviser commenced providing services for the fund in July 2022 and therefore the returns shown in the table for periods prior to that date reflect the performance of other investment professionals. The bar chart shows changes in the fund’s performance from year to year over a 10-year period. The table shows how the fund’s average annual returns compare to those of a broad-based securities market index and two style-specific benchmarks that reflect the market sectors in which the fund invests. Updated performance information is available at virtus.com or by calling 800-243-1574. Performance for Class R6 Shares is not shown here as Class R6 Shares had not begun operations until May 21, 2026 and therefore had no performance for the periods shown. |
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| Performance Past Does Not Indicate Future [Text] | The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future. | ||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the potential risks of investing in the fund. | ||||||||||||||||
| Bar Chart Does Not Reflect Sales Loads [Text] | Returns do not reflect sales charges applicable to other share classes and would be lower if they did. | ||||||||||||||||
| Bar Chart [Heading] | Calendar year total returns for Institutional Class Shares | ||||||||||||||||
| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns (for the periods ended 12/31/25) | ||||||||||||||||
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. | ||||||||||||||||
| Performance [Table] | |||||||||||||||||
| Performance Table One Class of after Tax Shown [Text] | After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. | ||||||||||||||||
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) | ||||||||||||||||
| Performance Table Closing [Text Block] | The Wilshire 5000 Total Market Index (formerly known as the FT Wilshire 5000 Index) is a broad-based free-float market capitalization-weighted index that aims to capture 100% of the U.S. investable market capitalization. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment. The S&P North American Technology Sector Index is a modified capitalization-weighted index of selected technology and internet-related stocks. The Nasdaq Composite Index is a market capitalization-weighted index of all common stocks listed on the Nasdaq Stock Market. The indexes are calculated on a total return basis. The indexes are unmanaged and not available for direct investment. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Institutional Class Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. |
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| Performance Availability Website Address [Text] | virtus.com | ||||||||||||||||
| Performance Availability Phone [Text] | 800-243-1574 | ||||||||||||||||
| Virtus Zevenbergen Technology Fund | Institutional Class Shares | |||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||
| Year to Date Return, Label [Optional Text] | Year to Date | ||||||||||||||||
| Bar Chart, Year to Date Return | 30.82% | ||||||||||||||||
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 | ||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||||||
| Highest Quarterly Return | 35.47% | ||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2020 | ||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||||||
| Lowest Quarterly Return | (25.79%) | ||||||||||||||||
| Lowest Quarterly Return, Date | Jun. 30, 2022 |