Performance Management |
Sep. 30, 2025 |
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| Virtus Convertible 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] | ICE BofA US Convertibles Index (reflects no deduction for fees, expenses or taxes) 17.98% 5.05% 11.22% 6.66% The Bloomberg U.S. Aggregate Bond Index measures the U.S. investment grade fixed rate bond market. The index is calculated on a total return basis. 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 Bloomberg U.S. Aggregate Bond Index measures the U.S. investment grade fixed rate bond market. The index is calculated on a total return basis. The index is unmanaged and not available for direct investment. The ICE BofA US Convertibles Index tracks the performance of publicly issued US dollar denominated convertible securities of U.S. companies. The index is calculated on a total return basis. The index is unmanaged and is 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 Convertible Fund | Institutional Class Shares | |||||||||||||
| Prospectus [Line Items] | |||||||||||||
| Bar Chart, Year to Date Return | none | ||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||
| Highest Quarterly Return | 26.25% | ||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2020 | ||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||
| Lowest Quarterly Return | (15.22%) | ||||||||||||
| Lowest Quarterly Return, Date | Jun. 30, 2022 | ||||||||||||
| Virtus Duff & Phelps Water 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 more narrowly based 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 All Country World Index (net) is a free float-adjusted market capitalization-weighted index that measures equity performance of developed and emerging markets. The MSCI All Country World 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 All Country World Index (net) is a free float-adjusted market capitalization-weighted index that measures equity performance of developed and emerging markets. The MSCI All Country World Index (net) is calculated on a total return basis with net dividends reinvested. The index is unmanaged and not available for direct investment. The S&P Global Water Index (net) is a modified capitalization-weighted index comprised of 50 of the largest publicly traded companies in water-related businesses that meet specific invest ability requirements. The index is designed to provide liquid exposure to the leading publicly-listed companies in the global water industry, from both developed markets and emerging markets. The index is calculated on a total return basis. 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 Duff & Phelps Water Fund | Institutional Class Shares | |||||||||||||
| Prospectus [Line Items] | |||||||||||||
| Bar Chart, Year to Date Return | none | ||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||
| Highest Quarterly Return | 14.07% | ||||||||||||
| Highest Quarterly Return, Date | Dec. 31, 2023 | ||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||
| Lowest Quarterly Return | (17.12%) | ||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2020 | ||||||||||||
| Virtus Global Allocation 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 and a composite benchmark 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 Bloomberg U.S. Aggregate Bond Index measures the U.S. investment grade fixed rate bond market. The index is calculated on a total return basis. 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 Bloomberg U.S. Aggregate Bond Index measures the U.S. investment grade fixed rate bond market. The index is calculated on a total return basis. The index is unmanaged and not available for direct investment. The MSCI All Country World Index (net) is a free float-adjusted market capitalization-weighted index that measures equity performance of developed and emerging markets. The MSCI All Country World Index (net) 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. |
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| Performance Availability Website Address [Text] | virtus.com | ||||||||||||
| Performance Availability Phone [Text] | 800-243-1574 | ||||||||||||
| Virtus Global Allocation Fund | Institutional Class Shares | |||||||||||||
| Prospectus [Line Items] | |||||||||||||
| Bar Chart, Year to Date Return | none | ||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||
| Highest Quarterly Return | 13.26% | ||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2020 | ||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||
| Lowest Quarterly Return | (12.48%) | ||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2020 | ||||||||||||
| Virtus International 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 two broad-based securities market indexes. 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 MSCI All Country World 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] |
|
||||||||||||
| 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 All Country World 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. The MSCI All Country World ex USA Small Cap Index (net) is a free float-adjusted market capitalization-weighted index that measures mid- and small-cap performance across 22 of 23 Developed Market countries (excluding the U.S.) and 24 Emerging Markets countries. 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 International Small-Cap Fund | Institutional Class Shares | |||||||||||||
| Prospectus [Line Items] | |||||||||||||
| Bar Chart, Year to Date Return | none | ||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||
| Highest Quarterly Return | 22.14% | ||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2020 | ||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||
| Lowest Quarterly Return | (24.76%) | ||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2020 | ||||||||||||
| Virtus Newfleet Short Duration High Income 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] | ICE BofA 1-3Y BB US Cash Pay High Yield Index (reflects no deduction for fees, expenses or taxes) 7.22% 4.50% 4.99% 4.60% The Bloomberg U.S. Aggregate Bond Index measures the U.S. investment grade fixed rate bond market. The index is calculated on a total return basis. 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] |
|
||||||||||||
| 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 Bloomberg U.S. Aggregate Bond Index measures the U.S. investment grade fixed rate bond market. The index is calculated on a total return basis. The index is unmanaged and not available for direct investment. The ICE BofA 1-3 Year BB U.S. Cash Pay High Yield Index is a subset of The ICE BofA U.S. Cash Pay High Yield Index including all securities with a remaining term to final maturity less than 3 years and rated BB1 through BB3, inclusive. The ICE BofA U.S. Cash Pay High Yield Index tracks the performance of U.S. dollar denominated below investment grade corporate debt, currently in a coupon paying period, that is publicly issued in the U.S. domestic market. 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 Newfleet Short Duration High Income Fund | Institutional Class Shares | |||||||||||||
| Prospectus [Line Items] | |||||||||||||
| Bar Chart, Year to Date Return | none | ||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||
| Highest Quarterly Return | 9.80% | ||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2020 | ||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||
| Lowest Quarterly Return | (11.95%) | ||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2020 | ||||||||||||
| Virtus NFJ Emerging Markets 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. |
||||||||||||
| 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 NFJ Emerging Markets Value Fund | Institutional Class Shares | |||||||||||||
| Prospectus [Line Items] | |||||||||||||
| Bar Chart, Year to Date Return | none | ||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter | ||||||||||||
| Highest Quarterly Return | 21.65% | ||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2020 | ||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter | ||||||||||||
| Lowest Quarterly Return | (21.20%) | ||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2020 |