Label	Element	Value
Risk Return Abstract	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Voya MUTUAL FUNDS
Prospectus Date	rr_ProspectusDate	Feb. 28, 2023
Class I and P Shares | Voya Multi-Manager International Equity Fund
Risk Return Abstract	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	<span style="color:#000000;font-family:Arial;font-size:16.74pt;">Voya Multi-Manager International Equity 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 seeks long-term growth of capital.
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.
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:#FF8000;font-family:Arial;font-size:6pt;font-weight:bold;position:relative;top:-4pt;">1</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 Narrow;font-size:8pt;">March 1, 2024</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 result in higher taxes when Fund shares are held 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 63% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	63.00%
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	<span style="color:#000000;font-family:Arial Narrow;font-size:8pt;">Expense information has been restated to reflect current contractual rates.</span>
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	This 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 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:The Example does not reflect sales charges (loads) on reinvested dividends (and other distributions). If these sales charges (loads) were included, your costs would be higher.
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. The Fund will provide shareholders with at least 60 days’ prior notice of any change in this investment policy. The Fund invests at least 65% of its assets in equity securities of companies organized under the laws of, or with principal offices located in, a number of different countries outside of the U.S., including companies in countries in emerging markets. The Fund does not seek to focus its investments in a particular industry or country. The Fund may invest in companies of any market capitalization. The equity securities in which the Fund may invest include, but are not limited to, common stocks, preferred stocks, depositary receipts, rights and warrants to buy common stocks, privately placed securities, and initial public offerings (“IPOs”). The Fund may invest in real estate-related securities including real estate investment trusts (“REITs”). The Fund may invest in derivative instruments including options, futures, and forward foreign currency exchange contracts. The Fund typically uses derivatives to seek to reduce exposure to other risks, such as interest rate or currency risk, to substitute for taking a position in the underlying assets, for cash management, and/or to seek to enhance returns in the Fund.The Fund invests its assets in foreign investments which are denominated in U.S. dollars, major reserve currencies and currencies of other countries and can be affected by fluctuations in exchange rates. To attempt to protect against adverse changes in currency exchange rates, the Fund may, but will not necessarily, use special techniques such as forward foreign currency exchange contracts.The Fund may invest in other investment companies, including exchange traded funds (“ETFs”), to the extent permitted under the Investment Company Act of 1940, as amended, and the rules and regulations thereunder , and under the terms of applicable no-action relief or exemptive orders granted thereunder .The Investment Adviser allocates the Fund’s assets to different sub-advisers. When selecting sub-advisers, the Investment Adviser takes into account a wide variety of factors and considerations, including among other things the investment strategy of a potential sub-adviser, its personnel, and its fit with other sub-advisers to the Fund. Among those, the Investment Adviser will typically consider the extent to which a potential sub-adviser takes into account environmental, social, and governance (“ESG”) factors as part of its investment process. ESG factors will be only one of many considerations in the Investment Adviser’s evaluation of any potential sub-adviser; the extent to which ESG factors will affect the Investment Adviser’s decision to retain a sub-adviser, if at all, will depend on the analysis and judgment of the Investment Adviser.Baillie Gifford Overseas Limited (“BG Overseas”), Polaris Capital Management, LLC (“Polaris”), and Wellington Management Company LLP (“Wellington Management”) (each, a “Sub-Adviser” and collectively, the “Sub-Advisers”) provide day-to-day management of the Fund. The Sub-Advisers act independently of each other and use their own methodologies for selecting investments. The Investment Adviser will determine the amount of Fund assets allocated to each Sub-Adviser.Each 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.Baillie Gifford Overseas LimitedBG Overseas’s investment style primarily uses a bottom-up, stock-driven approach, with the objective of selecting stocks that it believes can sustain an above-average growth rate, which is not reflected in the share price. A significant part of the assets will normally be divided among continental Europe, the United Kingdom, and Asia (including Australia and New Zealand). Country allocation, however, is driven by stock selection. BG Overseas invests in companies that it believes are well-managed, quality businesses that enjoy sustainable, competitive advantages in their marketplace.Companies are screened for quality first; valuation is a secondary consideration. BG Overseas looks for companies that it believes have attractive industry backgrounds, strong competitive positions within those industries, high-quality earnings, and a positive approach toward shareholders. The main fundamental factors that BG Overseas considers in this bottom-up analysis include earnings growth, cash flow growth, profitability, capital structure, and valuation. Further to the Fund’s long-term investment approach, BG Overseas seeks to identify companies with the potential to grow sustainably. When assessing a company’s ability to deliver sustainable growth over the long term, BG Overseas considers a range of factors, including the ESG characteristics of a company.Polaris Capital Management, LLCPolaris uses proprietary investment technology combined with Graham & Dodd style fundamental research to seek to identify potential investments that Polaris believes have significantly undervalued streams of sustainable cash flow. The firm uses traditional valuation measures, including price/book ratios and price/sustainable free cash flow ratios to screen its database of more than 40,000 companies worldwide. Polaris uses these measures to identify approximately 500 companies that Polaris believes have the greatest potential for undervalued streams of sustainable free cash flow. As a cross check to the database screen, a global valuation model is used that seeks to identify the most undervalued countries based on corporate earnings, yield, inflation, interest rates, and other variables. Allocations among investments are primarily determined by bottom-up security analysis while providing diversification in terms of country, industry, and market capitalization. Polaris monitors portfolio companies as well as a “watch list” comprised of companies which may be purchased if the valuation of an existing portfolio company falls below established limits.Wellington Management Company LLPWellington Management conducts fundamental research on individual companies to identify securities for purchase or sale. Fundamental analysis of a company involves the assessment of such factors as its business environment, management quality, balance sheet, income statement, anticipated earnings, revenues and dividends, and other related measures and indicators of value, including the evaluation of financially material ESG factors based on Wellington Management’s proprietary ESG research. Wellington Management believes assessing financially material ESG factors as part of its investment process allows it to better evaluate a company on its ability to improve or sustain its future returns over time. The factors that Wellington Management considers as part of its fundamental analysis, including the assessment of financially material ESG factors, contribute to its overall evaluation of a company’s risk and return potential. Wellington Management may not assess ESG factors for every stock prior to investment. Wellington Management seeks to invest in companies with underappreciated assets, improving and/or sustainable return on capital, and/or stocks that it believes are mispriced by the market due to short-term issues. This proprietary research takes into account each company’s long-term history as well as Wellington Management’s analysts’ forward-looking estimates, and allows for a comparison of the intrinsic value of stocks on a global basis focusing on return on invested capital in conjunction with other valuation metrics. Portfolio construction is driven primarily by bottom-up stock selection, with region, country, and sector weightings being secondary factors.
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. The principal risks are presented in alphabetical order to facilitate readability, and their order does not imply that the realization of one risk is more likely to occur or have a greater adverse impact than another risk.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 the company’s goods or services, regulatory fines and judgments, or business challenges. If a company is unable to meet its financial obligations, declares bankruptcy, or becomes insolvent, its stock could become worthless.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 asset, reference rate, or index credit risk with respect to the counterparty, risk of loss due to changes in market interest rates, liquidity risk, valuation risk, 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 asset, reference rate, or index 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.Environmental, Social, and Governance (Equity): A Sub-Adviser’s consideration of ESG factors in selecting investments for the Fund is based on information that is not standardized, some of which can be qualitative and subjective by nature. ASub-Adviser’s assessment of ESG factors in respect of a company may rely on third party data that might be incorrect or based on incomplete or inaccurate information. There is no minimum percentage of the Fund’s assets that will be invested in companies that a Sub-Adviser views favorably in light of ESG factors, and the Sub-Adviser may choose not to invest in companies that compare favorably to other companies on the basis of ESG factors. It is possible that the Fund will have less exposure to certain companies due to a Sub-Adviser’s assessment of ESG factors than other comparable mutual funds. There can be no assurance that an investment selected by a Sub-Adviser, which includes its consideration of ESG factors, will provide more favorable investment performance than another potential investment, and such an investment may, in fact, underperform other potential investments.Environmental, Social, and Governance (Multi-Manager): The Investment Adviser’s consideration of ESG factors in selecting sub-advisers for the Fund is based on information that is not standardized, some of which can be qualitative and subjective by nature. There is no minimum percentage of the Fund’s assets that will be allocated to sub-advisers that consider ESG factors as part of their investment processes, and the Investment Adviser may choose to select sub-advisers that do not consider ESG factors as part of their investment processes. It is possible that the Fund will have less exposure to ESG-focused strategies than other comparable mutual funds. There can be no assurance that a sub-adviser selected by the Investment Adviser, which includes its consideration of ESG factors, will provide more favorable investment performance than another potential sub-adviser, and such a sub-adviser may, in fact, underperform other potential sub-advisers.Foreign (Non-U.S.) 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, in part, 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; and political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the U.S. 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 (non-U.S.) investment risks may be greater in developing and emerging markets than in developed markets.Growth Investing: Prices of growth-oriented stocks are more sensitive to investor perceptions of the issuer’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-oriented stocks tend to be more volatile than value-oriented stocks, and may underperform the market as a whole over any given time period.Initial Public Offerings: Investments in IPOs and companies that have recently gone public have the potential to produce substantial gains for the Fund. However, there is no assurance that the Fund will have access to profitable IPOs or that the IPOs in which the Fund invests will rise in value. Furthermore, the value of securities of newly public companies may decline in value shortly after the IPO. When the Fund’s asset base is small, the impact of such investments on the Fund’s return will be magnified. If the Fund’s assets grow, it is likely that the effect of the Fund’s investment in IPOs on the Fund’s return will decline.Investing through Stock Connect: Shares in mainland China-based companies that trade on Chinese stock exchanges such as the Shanghai Stock Exchange and the Shenzhen Stock Exchange (“China A-Shares”) may be purchased directly or indirectly through the Shanghai-Hong Kong Stock Connect (“Stock Connect”), a mutual market access program designed to, among other things, enable foreign investment in the People’s Republic of China (“PRC”) via brokers in Hong Kong. There are significant risks inherent in investing in China A-Shares through Stock Connect. The underdeveloped state of PRC’s investment and banking systems subjects the settlement, clearing, and registration of China A-Shares transactions to heightened risks. Stock Connect can only operate when both PRC and Hong Kong markets are open for trading and when banking services are available in both markets on the corresponding settlement days. As such, if either or both markets are closed on a U.S. trading day, the Fund may not be able to dispose of its China A-Shares in a timely manner, which could adversely affect the Fund’s performance.The Chinese economy is generally considered an emerging and volatile market. Significant portions of the Chinese securities markets may become rapidly illiquid because Chinese issuers have the ability to suspend the trading of their equity securities under certain circumstances, and have shown a willingness to exercise that option in response to market volatility, epidemics, pandemics, adverse economic, market or political events, and other events. In addition, there may be restrictions on investments in Chinese companies. For example, on November 12, 2020, the President of the United States signed an Executive Order prohibiting U.S. persons from purchasing or investing in publicly-traded securities of companies identified by the U.S. government as “Communist Chinese military companies.” The list of such companies can change from time to time, and as a result of forced selling or inability to participate in an investment the Investment Adviser/Sub-Adviser otherwise believes is attractive, the Fund may incur losses.Investment Model: A Sub-Adviser’s proprietary model may not adequately take into account existing or unforeseen market factors or the interplay between such factors.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 prices at which it sells illiquid securities will be less than the prices at which they were valued when held by the Fund, which could cause the Fund to lose money. The prices of illiquid securities may be more volatile than more liquid securities, and the risks associated with illiquid securities may be greater in times of financial stress.Market: The market values of securities will fluctuate, sometimes sharply and unpredictably, based on overall economic conditions, governmental actions or intervention, market disruptions caused by trade disputes or other factors, political developments, and other factors. Prices of equity securities tend to rise and fall more dramatically than those of fixed-income instruments. Additionally, legislative, regulatory, or tax policies or developments 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-capitalization companies causing a fund that invests in these companies to increase in value more rapidly than a fund that invests in large-capitalization 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 large-capitalization 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 United States. Wars, terrorism, global health crises and pandemics, and other geopolitical events that have led, and may continue to lead, to increased market volatility and may have adverse short- or long-term effects on U.S., and global economies and markets, generally. For example, the COVID-19 pandemic has resulted, and may continue to result, in significant market volatility, exchange suspensions and closures, declines in global financial markets, higher default rates, supply chain disruptions, 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. In addition, military action by Russia in Ukraine has, and may continue to, adversely affect global energy and financial markets and therefore could affect the value of the Fund’s investments, including beyond the Fund’s direct exposure to Russian issuers or nearby geographic regions. The extent and duration of the military action, sanctions, and resulting market disruptions are impossible to predict and could be substantial. Those events as well as other changes in foreign (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 Fund’s investments. 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 ETFs, is the risk that the value of an investment company’s underlying investments 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 Fund’s expenses. 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. In addition, shares of ETFs may trade at a premium or discount to net asset value and are subject to secondary market trading risks. Secondary markets may be subject to irregular trading activity, wide bid/ask spreads, and extended trade settlement periods in times of market stress because market makers and authorized participants may step away from making a market in an ETF’s shares, which could cause a material decline in the ETF’s net asset value.Real Estate Companies and Real Estate Investment Trusts: Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, overbuilding, high foreclosure rates, and operating expenses in addition to terrorist attacks, wars, or other acts that destroy real property. In addition, REITs may also be affected by tax and regulatory requirements in that a REIT may not qualify for favorable tax treatment or regulatory exemptions. Investments in REITs are affected by the management skill of the REIT’s sponsor. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests.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.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. Risks associated with value investing include that a security that is perceived by the manager to be undervalued may actually be appropriately priced and, thus, may not appreciate and provide anticipated capital growth. 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 securities 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>
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 with investment characteristics similar to those of the Fund 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.On July 27, 2020, Lazard Asset Management LLC (which served as a sub-adviser from July 1, 2013 to July 27, 2020) was removed as a sub-adviser. On January 20, 2017, Polaris and Wellington Management were added as additional sub-advisers and J.P. Morgan Investment management Inc. (which served as a sub-adviser from July 1, 2013 to January 20, 2017) and T. Rowe Price Associates, Inc. (which served as a sub-adviser from December 15, 2010 to January 20, 2017) were removed as sub-advisers. On July 1, 2013, J.P. Morgan Investment Management Inc. and Lazard Asset Management LLC were added as additional sub-advisers. These changes to the sub-advisers resulted in a change to the Fund’s principal investment strategies. If the Fund’s current sub-advisers and strategies had been in place for the prior period, the performance information shown would have been different. The Fund's past performance (before and after taxes) is no guarantee of future results. For the most recent performance figures, go to https://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 with investment characteristics similar to those of the Fund 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;">https://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 I </span> <br/><span style="color:#000000;font-family:Arial;font-size:7.44pt;margin-left:0%;">(as of December 31 of each year)</span>
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best quarter:2nd Quarter 202020.00%Worst quarter:1st Quarter 2020-25.76%
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, 2022)</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 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.
Index No Deduction For Fees Expenses Taxes Two [Text]	vmf_IndexNoDeductionForFeesExpensesTaxesTwo	<span style="color:#000000;font-family:Arial Narrow;font-size:8pt;">The index returns include the reinvestment of dividends and distributions net of withholding taxes, but do not reflect fees, brokerage commissions, or other expenses.</span>
Class I and P Shares | Voya Multi-Manager International Equity Fund | Class I
Risk Return Abstract	rr_RiskReturnAbstract
Maximum sales charge (load) as a % of offering price imposed on purchases	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) as a % of purchase or sales price, whichever is less	rr_MaximumDeferredSalesChargeOverOther	none
Management Fees	rr_ManagementFeesOverAssets	0.85%	[1]
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none	[1]
Other Expenses	rr_OtherExpensesOverAssets	0.09%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.94%	[1]
Waivers, Reimbursements and Recoupments	rr_FeeWaiverOrReimbursementOverAssets	(0.04%)	[1],[2]
Total Annual Fund Operating Expenses after Waivers and Reimbursements	rr_NetExpensesOverAssets	0.90%	[1]
1 Yr	rr_ExpenseExampleYear01	$ 92
3 Yrs	rr_ExpenseExampleYear03	296
5 Yrs	rr_ExpenseExampleYear05	516
10 Yrs	rr_ExpenseExampleYear10	$ 1,151
2013	rr_AnnualReturn2013	19.80%
2014	rr_AnnualReturn2014	(6.28%)
2015	rr_AnnualReturn2015	0.47%
2016	rr_AnnualReturn2016	(0.91%)
2017	rr_AnnualReturn2017	25.23%
2018	rr_AnnualReturn2018	(15.72%)
2019	rr_AnnualReturn2019	23.64%
2020	rr_AnnualReturn2020	15.44%
2021	rr_AnnualReturn2021	6.91%
2022	rr_AnnualReturn2022	(21.80%)
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	20.00%
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	(25.76%)
1 Yr	rr_AverageAnnualReturnYear01	(21.80%)
5 Yrs	rr_AverageAnnualReturnYear05	0.12%
10 Yrs	rr_AverageAnnualReturnYear10	3.48%
Since Inception	rr_AverageAnnualReturnSinceInception
Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 06, 2011
Class I and P Shares | Voya Multi-Manager International Equity Fund | After tax on distributions | Class I
Risk Return Abstract	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(21.94%)
5 Yrs	rr_AverageAnnualReturnYear05	(1.56%)
10 Yrs	rr_AverageAnnualReturnYear10	2.30%
Since Inception	rr_AverageAnnualReturnSinceInception
Class I and P Shares | Voya Multi-Manager International Equity Fund | After tax on distributions with sale | Class I
Risk Return Abstract	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(12.66%)
5 Yrs	rr_AverageAnnualReturnYear05	0.09%
10 Yrs	rr_AverageAnnualReturnYear10	2.31%
Since Inception	rr_AverageAnnualReturnSinceInception
Class I and P Shares | Voya Multi-Manager International Equity Fund | MSCI EAFE® Index
Risk Return Abstract	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(14.45%)	[3]
5 Yrs	rr_AverageAnnualReturnYear05	1.54%	[3]
10 Yrs	rr_AverageAnnualReturnYear10	4.67%	[3]
Since Inception	rr_AverageAnnualReturnSinceInception		[3]
Class I and P Shares | Voya Multi-Manager International Equity Fund | MSCI ACW ex-U.S.SM Index
Risk Return Abstract	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(16.00%)	[3]
5 Yrs	rr_AverageAnnualReturnYear05	0.88%	[3]
10 Yrs	rr_AverageAnnualReturnYear10	3.80%	[3]
Since Inception	rr_AverageAnnualReturnSinceInception		[3]

[1] Expense information has been restated to reflect current contractual rates.

[2] Voya Investments, LLC (the “Investment Adviser”) is contractually obligated to limit expenses to 0.97% for Class I shares through March 1, 2024. This limitation is subject to possible recoupment by the Investment Adviser within 36 months of the waiver or reimbursement. The amount of the recoupment is limited to the lesser of the amounts that would be recoupable under: (i) the expense limitation in effect at the time of the waiver or reimbursement; or (ii) the expense limitation in effect at the time of recoupment. In addition, the Investment Adviser is contractually obligated to further limit expenses to 0.90 % for Class I shares through March 1, 2024 . 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 of Trustees (the “Board”).

[3] The index returns include the reinvestment of dividends and distributions net of withholding taxes, but do not reflect fees, brokerage commissions, or other expenses.