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Risk Return Abstract rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName Voya MUTUAL FUNDS
Prospectus Date rr_ProspectusDate Feb. 28, 2022
Class A I and W Shares | Voya Russia Fund  
Risk Return Abstract rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading <span style="color:#000000;font-family:Arial;font-size:16.74pt;">Voya Russia Fund</span>
Objective [Heading] rr_ObjectiveHeading <span style="color:#000000;font-family:Arial;font-size:11.16pt;font-weight:bold;text-transform:uppercase;">Investment Objective</span>
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The Fund's investment objective is to seek long-term capital appreciation.
Expense [Heading] rr_ExpenseHeading <span style="color:#000000;font-family:Arial;font-size:11.16pt;font-weight:bold;text-transform:uppercase;">Fees and Expenses of the Fund</span>
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock These tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Voya mutual funds. More information about these and other discounts is available from your financial intermediary and in the discussion in the Sales Charges section of the Prospectus (page 91), in Appendix A to the Prospectus, or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 113).
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption <span style="color:#FF8000;font-family:Arial;font-size:8.928pt;font-weight:bold;">Shareholder Fees</span><span style="color:#000000;font-family:Arial;font-size:7.44pt;margin-left:0%;">Fees paid directly from your investment</span>
Operating Expenses Caption [Text] rr_OperatingExpensesCaption <span style="color:#FF8000;font-family:Arial;font-size:8.928pt;font-weight:bold;">Annual Fund Operating Expenses</span><span style="color:#000000;font-family:Arial;font-size:7.44pt;margin-left:0%;">Expenses you pay each year as a % of the value of your investment</span>
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination <span style="font-family:Arial;font-size:6.5pt;">March 1, 2023</span><span style="font-family:Arial;font-size:6.5pt;">March 1, 2023</span>
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading <span style="color:#FF8000;font-family:Arial;font-size:8.928pt;font-weight:bold;">Portfolio Turnover</span>
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may mean higher taxes if you are investing in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses or in the Expense Example, affect the Fund's performance.During the most recent fiscal year, the Fund's portfolio turnover rate was 39% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 39.00%
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock A contingent deferred sales charge of 1.00% is assessed on certain redemptions of Class A shares made within 18 months after purchase where no initial sales charge was paid at the time of purchase as part of an investment of $1 million or more.
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts <span style="color:#000000;font-family:Arial;font-size:9.30pt;"> You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $</span><span style="color:#000000;font-family:Arial;font-size:9.30pt;">50,000</span><span style="color:#000000;font-family:Arial;font-size:9.30pt;"> in Voya mutual funds.</span>
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expense Example [Heading] rr_ExpenseExampleHeading <span style="color:#FF8000;font-family:Arial;font-size:8.928pt;font-weight:bold;">Expense Example</span>
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock The Example is intended to help you compare the cost of investing in shares of the Fund with the costs of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated. The Example shows costs if you sold (redeemed) your shares at the end of the period or continued to hold them. The Example also assumes that your investment had a 5% return each year and that the Fund's operating expenses remain the same. The cost of investing in the Fund for one year may vary based on the 2.00% redemption fee if shares were held for less than 365 days. The Example reflects applicable expense limitation agreements and/or waivers in effect, if any, for the one-year period and the first year of the three-, five-, and ten-year periods. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading <span style="color:#000000;font-family:Arial;font-size:11.16pt;font-weight:bold;text-transform:uppercase;">Principal Investment Strategies</span>
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock Under normal market conditions, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes) in equity securities (including common stocks, preferred stocks, and convertible securities) of Russian companies. The Fund will provide shareholders with at least 60 days' prior notice of any change in this investment policy. The Fund may invest the other 20% of its assets in debt securities issued by Russian companies and debt securities issued or guaranteed by the Russian government without any restrictions based on investment quality or maturity of the debt securities. The Fund may also invest in the equity securities of companies located outside of Russia, including those companies located in the former Soviet Union. The Fund may invest in other investment companies, including exchange-traded funds, to the extent permitted under the Investment Company Act of 1940, as amended, and the rules, regulations, and applicable exemptive orders thereunder (“1940 Act”).The Fund may use derivatives including, but not limited to, futures, options, swaps, and forward foreign currency exchange contracts for hedging and non-hedging purposes. The Fund may use derivatives as a substitute for taking a position in the underlying asset and/or as part of a strategy to seek to reduce risk, such as interest rate risk, currency risk, and price risk.The sub-adviser (“Sub-Adviser”) manages the Fund as a core equity product investing primarily in Russian companies and is not constrained by a particular investment style or market capitalization. It may invest in “growth” or “value” securities. The Sub-Adviser seeks to invest in companies that it believes are undervalued by the market because their pace of development and earnings growth have been underestimated. The Sub-Adviser also seeks to invest in companies that it believes will experience growth in revenue and profits.For this Fund, the Sub-Adviser defines a Russian company as a company that: (i) is organized under the laws of, or with principal offices in, Russia; (ii) has 50% or more of its assets in Russia; or (iii) derives 50% or more of its total revenue from sales made in markets in Russia.The Fund is non-diversified, which means it may invest a significant portion of its assets in a single issuer.The Sub-Adviser may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into opportunities believed to be more promising, among others.The Fund may lend portfolio securities on a short-term or long-term basis, up to 33 1∕3% of its total assets.
Risk [Heading] rr_RiskHeading <span style="color:#000000;font-family:Arial;font-size:11.16pt;font-weight:bold;text-transform:uppercase;">Principal Risks</span>
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock You could lose money on an investment in the Fund. Any of the following risks, among others, could affect Fund performance or cause the Fund to lose money or to underperform market averages of other funds.Company: The price of a company’s stock could decline or underperform for many reasons including, among others, poor management, financial problems, reduced demand for company goods or services, regulatory fines and judgments, or business challenges. If a company declares bankruptcy or becomes insolvent, its stock could become worthless.Convertible Securities: Convertible securities are securities that are convertible into or exercisable for common stocks at a stated price or rate. Convertible securities are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. In addition, because convertible securities react to changes in the value of the stocks into which they convert, they are subject to market risk.Credit: The price of a bond or other debt instrument is likely to fall if the issuer’s actual or perceived financial health deteriorates, whether because of broad economic or issuer-specific reasons. In certain cases, the issuer could be late in paying interest or principal, or could fail to pay its financial obligations altogether.Currency: To the extent that the Fund invests directly or indirectly in foreign (non-U.S.) currencies or in securities denominated in, or that trade in, foreign (non-U.S.) currencies, it is subject to the risk that those foreign (non-U.S.) currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency being hedged by the Fund through foreign currency exchange transactions.Derivative Instruments: Derivative instruments are subject to a number of risks, including the risk of changes in the market price of the underlying securities, credit risk with respect to the counterparty, risk of loss due to changes in market interest rates and liquidity and volatility risk. The amounts required to purchase certain derivatives may be small relative to the magnitude of exposure assumed by the Fund. Therefore, the purchase of certain derivatives may have an economic leveraging effect on the Fund and exaggerate any increase or decrease in the net asset value. Derivatives may not perform as expected, so the Fund may not realize the intended benefits. When used for hedging purposes, the change in value of a derivative may not correlate as expected with the currency, security or other risk being hedged. When used as an alternative or substitute for direct cash investment, the return provided by the derivative may not provide the same return as direct cash investment. In addition, given their complexity, derivatives expose the Fund to the risk of improper valuation.Focused Investing: To the extent that the Fund invests a substantial portion of its assets in securities related to a particular industry, sector, market segment, or geographic area, its investments will be sensitive to developments in that industry, sector, market segment, or geographic area. The Fund is subject to the risk that changing economic conditions; changing political or regulatory conditions; or natural and other disasters affecting the particular industry, sector, market segment, or geographic area in which the Fund focuses its investments could have a significant impact on its investment performance and could ultimately cause the Fund to underperform, or its net asset value to be more volatile than, other funds that invest more broadly.Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, auditing and financial reporting standards and practices; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets.Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period.High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk.Interest Rate: With bonds and other fixed rate debt instruments, a rise in market interest rates generally causes values to fall; conversely, values generally rise as market interest rates fall. The higher the credit quality of the instrument, and the longer its maturity or duration, the more sensitive it is likely to be to interest rate risk. Duration is a measure of sensitivity of the price of a debt instrument to a change in interest rate. In the case of inverse securities, the interest rate paid by the securities is a floating rate, which generally will decrease when the market rate of interest to which the inverse security is indexed increases and will increase when the market rate of interest to which the inverse security is indexed decreases. As of the date of this Prospectus, the United States experiences a low interest rate environment, which may increase the Fund’s exposure to risks associated with rising market interest rates. Rising market interest rates could have unpredictable effects on the markets and may expose fixed-income and related markets to heightened volatility. To the extent that the Fund invests in fixed-income securities, an increase in market interest rates may lead to increased redemptions and increased portfolio turnover, which could reduce liquidity for certain investments, adversely affect values, and increase costs. Increased redemptions may cause the Fund to liquidate portfolio positions when it may not be advantageous to do so and may lower returns. If dealer capacity in fixed-income markets is insufficient for market conditions, it may further inhibit liquidity and increase volatility in the fixed-income markets. Further, recent and potential future changes in government policy may affect interest rates. Negative or very low interest rates could magnify the risks associated with changes in interest rates. In general, changing interest rates, including rates that fall below zero, could have unpredictable effects on markets and may expose fixed-income and related markets to heightened volatility. Changes to monetary policy by the Federal Reserve Board or other regulatory actions could expose fixed-income and related markets to heightened volatility, interest rate sensitivity and reduced liquidity, which may impact the Fund’s operations and return potential.Issuer Non-Diversification: A “ non-diversified ” investment company is subject to the risks of focusing investments in a small number of issuers, industries or foreign currencies, including being more susceptible to risks associated with a single economic, political or regulatory occurrence than a more diversified portfolio might be.Liquidity: If a security is illiquid, the Fund might be unable to sell the security at a time when the Fund’s manager might wish to sell, or at all. Further, the lack of an established secondary market may make it more difficult to value illiquid securities, exposing the Fund to the risk that the price at which it sells illiquid securities will be less than the price at which they were valued when held by the Fund. The prices of illiquid securities may be more volatile than more liquid investments. The risks associated with illiquid securities may be greater in times of financial stress. The Fund could lose money if it cannot sell a security at the time and price that would be most beneficial to the Fund.Market: Stock prices may be volatile or have reduced liquidity in response to real or perceived impacts of factors including, but not limited to, economic conditions, changes in market interest rates, and political events. Stock markets tend to be cyclical, with periods when stock prices generally rise and periods when stock prices generally decline. Any given stock market segment may remain out of favor with investors for a short or long period of time, and stocks as an asset class may underperform bonds or other asset classes during some periods. Additionally, legislative, regulatory or tax policies or developments in these areas may adversely impact the investment techniques available to a manager, add to costs and impair the ability of the Fund to achieve its investment objectives.Market Capitalization: Stocks fall into three broad market capitalization categories - large, mid, and small. Investing primarily in one category carries the risk that, due to current market conditions, that category may be out of favor with investors. If valuations of large-capitalization companies appear to be greatly out of proportion to the valuations of mid- or small-capitalization companies, investors may migrate to the stocks of mid- and small-sized companies causing a fund that invests in these companies to increase in value more rapidly than a fund that invests in larger companies. Investing in mid- and small-capitalization companies may be subject to special risks associated with narrower product lines, more limited financial resources, smaller management groups, more limited publicly available information, and a more limited trading market for their stocks as compared with larger companies. As a result, stocks of mid- and small-capitalization companies may be more volatile and may decline significantly in market downturns.Market Disruption and Geopolitical: The Fund is subject to the risk that geopolitical events will disrupt securities markets and adversely affect global economies and markets. Due to the increasing interdependence among global economies and markets, conditions in one country, market, or region might adversely impact markets, issuers and/or foreign exchange rates in other countries, including the U.S. Wars, terrorism, global health crises and pandemics, and other geopolitical events have led, and in the future may lead, to increased market volatility and may have adverse short- or long-term effects on U.S. and world economies and markets generally. For example, the COVID-19 pandemic has resulted, and may continue to result, in significant market volatility, exchange trading suspensions and closures, declines in global financial markets, higher default rates, and a substantial economic downturn in economies throughout the world. Natural and environmental disasters and systemic market dislocations are also highly disruptive to economies and markets. Those events as well as other changes in non-U.S. and domestic economic, social, and political conditions also could adversely affect individual issuers or related groups of issuers, securities markets, interest rates, credit ratings, inflation, investor sentiment, and other factors affecting the value of the investments of the Fund and the Fund. Any of these occurrences could disrupt the operations of the Fund and of the Fund’s service providers.Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject.Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates.Russian Companies: Investments in Russian Companies involve a high degree of risk and special considerations not typically associated with investments in more established economies or securities markets, such as political, economic, and legal uncertainties, regional and global conflicts, including actions that are contrary to the interests of the U.S., and currency fluctuations. Investment in the Fund should be considered highly speculative.Sanctions: The United States and other countries have imposed economic sanctions against or affecting certain Russian companies in various sectors of the Russian economy, such as the financial services, energy, and defense and defense-related materials sectors. These sanctions, or even the threat of further sanctions, may result in the decline of the value and liquidity of Russian securities, the weakening of the ruble, or other adverse consequences to the Russian economy. As a result, sanctions may impair the Fund’s performance or its ability to meet its investment objective. For example, the Fund may be prohibited from investing in securities issued by companies subject to such sanctions. In addition, the sanctions may require the Fund to freeze its existing investments in Russian companies, prohibiting the Fund from selling or otherwise transacting in these investments. This could negatively impact the Fund’s ability to sell securities or other financial instruments as needed and may instead borrow funds to meet shareholder redemptions. The Fund may seek to suspend redemptions in the event that an emergency exists in which it is not reasonably practicable for the Fund to dispose of its securities or to determine the value of its net assets. Other entities or countries could also institute broader sanctions that affect Russian companies. Both current and potential sanctions could result in Russia taking counter measures or retaliatory actions, which may further impair the value or liquidity of Russian securities and negatively impact the Fund.Securities Lending: Securities lending involves two primary risks: “ investment risk ” and “ borrower default risk. ” When lending securities, the Fund will receive cash or U.S. government securities as collateral. Investment risk is the risk that the Fund will lose money from the investment of the cash collateral received from the borrower. Borrower default risk is the risk that the Fund will lose money due to the failure of a borrower to return a borrowed security. Securities lending may result in leverage. The use of leverage may exaggerate any increase or decrease in the net asset value, causing the Fund to be more volatile. The use of leverage may increase expenses and increase the impact of the Fund’s other risks.Sovereign Debt: These securities are issued or guaranteed by foreign government entities. Investments in sovereign debt are subject to the risk that a government entity may delay payment, restructure its debt, or refuse to pay interest or repay principal on its sovereign debt. Some of these reasons may include cash flow problems, insufficient foreign currency reserves, political considerations, social changes, the relative size of its debt position to its economy or its failure to put in place economic reforms required by the International Monetary Fund or other multilateral agencies. If a government entity defaults, it may ask for more time in which to pay or for further loans. There is no legal process for collecting sovereign debts that a government does not pay or bankruptcy proceeding by which all or part of sovereign debt that a government entity has not repaid may be collected.Value Investing: Securities that appear to be undervalued may never appreciate to the extent expected. Further, because the prices of value-oriented securities tend to correlate more closely with economic cycles than growth-oriented securities, they generally are more sensitive to changing economic conditions, such as changes in market interest rates, corporate earnings and industrial production. The manager may be wrong in its assessment of a company’s value and the securities the Fund holds may not reach their full values. A particular risk of the Fund’s value approach is that some holdings may not recover and provide the capital growth anticipated or a security judged to be undervalued may actually be appropriately priced. The market may not favor value-oriented securities and may not favor equities at all. During those periods, the Fund’s relative performance may suffer. There is a risk that funds that invest in value-oriented stocks may underperform other funds that invest more broadly.An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board or any other government agency.
Risk Lose Money [Text] rr_RiskLoseMoney <span style="color:#000000;font-family:Arial;font-size:9.30pt;margin-left:0%;">You could lose money on an investment in the Fund.</span>
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution <span style="color:#000000;font-family:Arial;font-size:9.30pt;font-style:italic;margin-left:0%;">An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation, </span><span style="color:#000000;font-family:Arial;font-size:9.30pt;font-style:italic;">the Federal Reserve Board or any other government agency</span><span style="color:#000000;font-family:Arial;font-size:9.30pt;">.</span>
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus <span style="color:#FF8000;font-family:Arial;font-size:9.765pt;font-weight:bold;margin-left:0%;">Issuer Non-Diversification:</span><span style="color:#000000;font-family:Arial;font-size:9.30pt;font-weight:bold;line-height:11.16pt;"> </span><span style="color:#000000;font-family:Arial;font-size:9.30pt;"> A “ non-diversified ” investment company is subject to the risks of focusing investments in a small number of issuers, industries or foreign currencies, including being more susceptible to risks associated with a single economic, political or regulatory occurrence than a more diversified portfolio might be.</span>
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading <span style="color:#000000;font-family:Arial;font-size:11.16pt;font-weight:bold;text-transform:uppercase;">Performance Information</span>
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock The following information is intended to help you understand the risks of investing in the Fund. The following bar chart shows the changes in the Fund's performance from year to year, and the table compares the Fund's performance to the performance of a broad-based securities market index/indices for the same period. The Fund's performance information reflects applicable fee waivers and/or expense limitations in effect during the period presented. Absent such fee waivers/expense limitations, if any, performance would have been lower. The bar chart shows the performance of the Fund's Class A shares. Sales charges are not reflected in the bar chart. If they were, returns would be less than those shown. However, the table includes all applicable fees and sales charges. Performance for other share classes would differ to the extent they have differences in their fees and expenses. The Fund's past performance (before and after taxes) is no guarantee of future results. For the most recent performance figures, go to www.individuals.voya.com/literature or call 1-800-992-0180.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns <span style="color:#000000;font-family:Arial;font-size:9.30pt;">The following bar chart shows the changes in the Fund's performance from year to year, and the table compares the Fund's performance to the performance of a broad-based securities market index/indices for the same period.</span>
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone <span style="color:#000000;font-family:Arial;font-size:9.30pt;font-style:italic;">1-800-992-0180</span>
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress <span style="color:#000000;font-family:Arial;font-size:9.30pt;font-style:italic;">www.individuals.voya.com/literature</span>
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture <span style="color:#000000;font-family:Arial;font-size:9.30pt;font-style:italic;"> The Fund's past performance (before and after taxes) is no guarantee of future results.</span>
Bar Chart [Heading] rr_BarChartHeading <span style="color:#FF8000;font-family:Arial;font-size:8.928pt;font-weight:bold;">Calendar Year Total Returns </span><span style="color:#000000;font-family:Arial;font-size:7.44pt;">Class A</span><span style="color:#000000;font-family:Arial;font-size:7.44pt;margin-left:0%;">(as of December 31 of each year)</span>
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads <span style="color:#000000;font-family:Arial;font-size:9.30pt;"> Sales charges are not reflected in the bar chart. If they were, returns would be less than those shown.</span>
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock Best quarter:2nd Quarter 202027.47%Worst quarter:1st Quarter 2020-35.91%
Performance Table Heading rr_PerformanceTableHeading <span style="color:#FF8000;font-family:Arial;font-size:8.928pt;font-weight:bold;">Average Annual Total Returns </span><span style="color:#000000;font-family:Arial;font-size:7.44pt;">% </span> <br/><span style="color:#000000;font-family:Arial;font-size:7.44pt;margin-left:0%;">(for the periods ended December 31, 2021)</span>
Performance Table Does Reflect Sales Loads rr_PerformanceTableDoesReflectSalesLoads <span style="color:#000000;font-family:Arial;font-size:9.30pt;"> However, the table includes all applicable fees and sales charges.</span>
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes <span style="color:#000000;font-family:Arial;font-size:6.5pt;">The index returns do not reflect deductions for fees, expenses, or taxes.</span>
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate <span style="color:#000000;font-family:Arial;font-size:9.30pt;margin-left:0%;">After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the </span><span style="color:#000000;font-family:Arial;font-size:9.30pt;">impact of state and local taxes.</span>
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred <span style="color:#000000;font-family:Arial;font-size:9.30pt;"> Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax advantaged arrangements such as 401(k) plans or individual retirement accounts (“IRAs”).</span>
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown <span style="color:#000000;font-family:Arial;font-size:9.30pt;"> After-tax returns are shown for Class A shares only. After-tax returns for other classes will vary.</span>
Performance Table Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher <span style="color:#000000;font-family:Arial;font-size:9.30pt;"> In some cases the after-tax returns may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.</span>
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock 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. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax advantaged arrangements such as 401(k) plans or individual retirement accounts (“IRAs”). In some cases the after-tax returns may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. After-tax returns are shown for Class A shares only. After-tax returns for other classes will vary.
Class A I and W Shares | Voya Russia Fund | Class A  
Risk Return Abstract rr_RiskReturnAbstract  
Maximum sales charge (load) as a % of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum deferred sales charge as a % of purchase or sales price, whichever is less rr_MaximumDeferredSalesChargeOverOther none [1]
Redemption fee % rr_RedemptionFeeOverRedemption 2.00% [2]
Management Fees rr_ManagementFeesOverAssets 1.35%
Distribution and/or Shareholder Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.35%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.95%
Waivers and Reimbursements rr_FeeWaiverOrReimbursementOverAssets none [3]
Total Annual Fund Operating Expenses after Waivers and Reimbursements rr_NetExpensesOverAssets 1.95%
1 Yr rr_ExpenseExampleYear01 $ 762
3 Yrs rr_ExpenseExampleYear03 1,152
5 Yrs rr_ExpenseExampleYear05 1,567
10 Yrs rr_ExpenseExampleYear10 $ 2,719
2012 rr_AnnualReturn2012 16.51%
2013 rr_AnnualReturn2013 4.77%
2014 rr_AnnualReturn2014 (40.54%)
2015 rr_AnnualReturn2015 4.59%
2016 rr_AnnualReturn2016 39.04%
2017 rr_AnnualReturn2017 11.71%
2018 rr_AnnualReturn2018 (5.40%)
2019 rr_AnnualReturn2019 47.84%
2020 rr_AnnualReturn2020 (6.59%)
2021 rr_AnnualReturn2021 21.25%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel <span style="font-family:Arial;font-size:7.44pt;font-weight:bold;margin-left:0.0pt;">Best quarter:</span>
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2020
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 27.47%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel <span style="font-family:Arial;font-size:7.44pt;font-weight:bold;margin-left:0.0pt;">Worst quarter:</span>
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (35.91%)
Class A I and W Shares | Voya Russia Fund | Class I  
Risk Return Abstract rr_RiskReturnAbstract  
Maximum sales charge (load) as a % of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge as a % of purchase or sales price, whichever is less rr_MaximumDeferredSalesChargeOverOther none
Redemption fee % rr_RedemptionFeeOverRedemption 2.00% [2]
Management Fees rr_ManagementFeesOverAssets 1.35%
Distribution and/or Shareholder Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.24%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.59%
Waivers and Reimbursements rr_FeeWaiverOrReimbursementOverAssets none [3]
Total Annual Fund Operating Expenses after Waivers and Reimbursements rr_NetExpensesOverAssets 1.59%
1 Yr rr_ExpenseExampleYear01 $ 162
3 Yrs rr_ExpenseExampleYear03 502
5 Yrs rr_ExpenseExampleYear05 866
10 Yrs rr_ExpenseExampleYear10 $ 1,889
1 Yr rr_AverageAnnualReturnYear01 21.88%
5 Yrs rr_AverageAnnualReturnYear05 12.41%
10 Yrs rr_AverageAnnualReturnYear10 6.67%
Since Inception rr_AverageAnnualReturnSinceInception
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 30, 2009
Class A I and W Shares | Voya Russia Fund | Class W  
Risk Return Abstract rr_RiskReturnAbstract  
Maximum sales charge (load) as a % of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge as a % of purchase or sales price, whichever is less rr_MaximumDeferredSalesChargeOverOther none
Redemption fee % rr_RedemptionFeeOverRedemption 2.00% [2]
Management Fees rr_ManagementFeesOverAssets 1.35%
Distribution and/or Shareholder Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.35%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.70%
Waivers and Reimbursements rr_FeeWaiverOrReimbursementOverAssets none [3]
Total Annual Fund Operating Expenses after Waivers and Reimbursements rr_NetExpensesOverAssets 1.70%
1 Yr rr_ExpenseExampleYear01 $ 173
3 Yrs rr_ExpenseExampleYear03 536
5 Yrs rr_ExpenseExampleYear05 923
10 Yrs rr_ExpenseExampleYear10 $ 2,009
1 Yr rr_AverageAnnualReturnYear01 21.55%
5 Yrs rr_AverageAnnualReturnYear05 12.39%
10 Yrs rr_AverageAnnualReturnYear10 6.70%
Since Inception rr_AverageAnnualReturnSinceInception
Inception Date rr_AverageAnnualReturnInceptionDate Aug. 05, 2011
Class A I and W Shares | Voya Russia Fund | After tax on distributions | Class A  
Risk Return Abstract rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 11.07%
5 Yrs rr_AverageAnnualReturnYear05 9.23%
10 Yrs rr_AverageAnnualReturnYear10 4.97%
Since Inception rr_AverageAnnualReturnSinceInception
Class A I and W Shares | Voya Russia Fund | After tax on distributions with sale | Class A  
Risk Return Abstract rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 11.03%
5 Yrs rr_AverageAnnualReturnYear05 8.65%
10 Yrs rr_AverageAnnualReturnYear10 4.46%
Since Inception rr_AverageAnnualReturnSinceInception
Class A I and W Shares | Voya Russia Fund | before taxes | Class A  
Risk Return Abstract rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 14.29%
5 Yrs rr_AverageAnnualReturnYear05 10.77%
10 Yrs rr_AverageAnnualReturnYear10 5.82%
Since Inception rr_AverageAnnualReturnSinceInception
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 03, 2096
Class A I and W Shares | Voya Russia Fund | MSCI Russia 10/40 Index | Class A  
Risk Return Abstract rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 14.25% [4]
5 Yrs rr_AverageAnnualReturnYear05 10.79% [4]
10 Yrs rr_AverageAnnualReturnYear10 6.15% [4]
Since Inception rr_AverageAnnualReturnSinceInception [4]
Class A I and W Shares | Voya Russia Fund | MSCI Russia 10/40 Index | Class I  
Risk Return Abstract rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 14.25% [4]
5 Yrs rr_AverageAnnualReturnYear05 10.79% [4]
10 Yrs rr_AverageAnnualReturnYear10 6.15% [4]
Since Inception rr_AverageAnnualReturnSinceInception [4]
Class A I and W Shares | Voya Russia Fund | MSCI Russia 10/40 Index | Class W  
Risk Return Abstract rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 14.25% [4]
5 Yrs rr_AverageAnnualReturnYear05 10.79% [4]
10 Yrs rr_AverageAnnualReturnYear10 6.15% [4]
Since Inception rr_AverageAnnualReturnSinceInception [4]
[1] A contingent deferred sales charge of 1.00% is assessed on certain redemptions of Class A shares made within 18 months after purchase where no initial sales charge was paid at the time of purchase as part of an investment of $1 million or more.
[2] A 2.00% redemption fee will be charged on the redemption of shares held less than 365 days. The redemption fee will not apply to shares representing the reinvestment of dividends and capital gains distributions.
[3] The adviser is contractually obligated to limit expenses to 2.15%, 1.90%, and 1.90% for Class A, Class I, and Class W shares, respectively, through March 1, 2023. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. In addition, the adviser is contractually obligated to further limit expenses to 2.00%, 1.75%, and 1.75% for Class A, Class I, and Class W shares, respectively, through March 1, 2023. The limitations do not extend to interest, taxes, investment-related costs, leverage expenses, extraordinary expenses, and Acquired Fund Fees and Expenses. Termination or modification of these obligations requires approval by the Fund’s board.
[4] The index returns do not reflect deductions for fees, expenses, or taxes.