Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Voya MUTUAL FUNDS
Prospectus Date	rr_ProspectusDate	Feb. 29, 2016
Voya Multi-Manager Emerging Markets Equity Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Multi-Manager Emerging Markets Equity Fund
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund seeks long-term capital appreciation.
Expense [Heading]	rr_ExpenseHeading	FEES AND EXPENSES OF THE FUND
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. 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 professional and in the discussion in the Sales Charges section of the Prospectus (page 94) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 135).
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees Fees paid directly from your investment
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses Expenses you pay each year as a % of the value of your investment
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	March 1, 2017
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
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 Examples, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 74% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	74.00%
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	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.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Examples
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The Examples are intended to help you compare the cost of investing in shares of the Fund with the costs of investing in other mutual funds. The Examples assume that you invest $10,000 in the Fund for the time periods indicated. The Examples show costs if you sold (redeemed) your shares at the end of the period or continued to hold them. The Examples also assume that your investment had a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example Closing [Text Block]	rr_ExpenseExampleClosingTextBlock	The Examples reflect 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.
Strategy [Heading]	rr_StrategyHeading	PRINCIPAL INVESTMENT STRATEGIES
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 of issuers in emerging markets. The Fund will provide shareholders with at least 60 days' prior notice of any change in this investment policy. Developing or emerging countries include most countries in the world except Australia, Canada, Japan, New Zealand, Hong Kong, Singapore, the United Kingdom, the United States, and most of the countries of Western Europe. An emerging market company is one that is organized under the laws of, or has a principal place of business in, an emerging market; where the principal securities market is in an emerging market; that derives at least 50% of its total revenues or profits from goods that are produced or sold, investments made, or services performed in an emerging market; or at least 50% of the assets of which are located in an emerging market. The Fund may invest in companies of any market capitalization. Equity securities may include common stock, preferred stock, convertible securities, depositary receipts, participatory notes, trust or partnership interests, warrants and rights to buy common stock, and privately placed securities. The Fund may also invest in real estate investment trusts and non-investment-grade bonds (high-yield or “junk bonds”). The Fund may invest in derivatives, including but not limited to, futures, options, swaps, and forwards as a substitute for securities in which the Fund can invest; to hedge various investments; to seek to reduce currency deviations, where practicable, for the purpose of risk management; to seek to increase the Fund's gains; and for the efficient management of cash flows. The Fund may invest in securities denominated in U.S. dollars, other major reserve currencies, such as the euro, yen and pound sterling, and currencies of other countries in which it can invest. The Fund typically maintains full currency exposure to those markets in which it invests. However, the Fund may, from time to time, hedge a portion of its foreign currency exposure into the U.S. dollar. 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 exemptive orders thereunder (“1940 Act”). Delaware Investments Fund Advisers (“DIFA”), J.P. Morgan Investment Management Inc. (“JPMorgan”), and Van Eck Associates Corporation (“Van Eck”) (each a “Sub-Adviser” and collectively “Sub-Advisers”) provide the day-to-day management of the Fund. The Sub-Advisers act independently of each other and use their own methodology for selecting investments. The Fund's 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. Delaware Investments Fund Advisers DIFA selects growth-oriented and value-oriented investments on the basis of the investment's discount to its intrinsic value. When selecting growth-oriented securities, DIFA typically seeks high growth caused by secular economic factors. These factors may include demographics, economic deregulation, and technological developments. When selecting value-oriented securities, DIFA typically seeks lower valuations caused by cyclical economic factors or temporary changes in business operations. Strong management and sustainable business franchise are key considerations in selecting both growth-oriented and value-oriented securities. In order to compare the value of different stocks, DIFA considers whether the future income stream on a stock is expected to increase faster than, slower than, or in line with the level of inflation. DIFA then estimates what it thinks the value of the anticipated future income stream would be worth if such income stream were being paid today. DIFA believes this gives it an estimate of the stock's intrinsic value. Because the Fund invests primarily in emerging countries, there may be less information available for DIFA to use in making this analysis than is available for more developed countries. Currency analysis is an important part of the valuation exercise. DIFA attempts to determine whether a particular currency is overvalued or undervalued by comparing the amount of goods and services that a dollar will buy in the United States to the amount of foreign currency required to buy the same amount of goods and services in another country. When the dollar buys less, the foreign currency may be overvalued, and when the dollar buys more, the foreign currency may be undervalued. Relative per capita income levels are also a key factor in this analysis. J.P. Morgan Investment Management Inc. JPMorgan emphasizes securities that it believes are ranked as undervalued, while underweighting or avoiding securities that appear overvalued. JPMorgan believes that emerging markets are generally inefficient as demonstrated by the high and variable volatility of many emerging markets and individual companies in these markets. Corporate disclosure and transparency can vary widely thereby exacerbating the inefficiency of these markets and offering opportunities to experienced, well-informed active investors. In managing its portion of the Fund, JPMorgan adheres to a disciplined process for stock selection and portfolio construction. A proprietary multi-factor model is used to quantitatively rank securities in the Fund's investment universe which JPMorgan uses to select securities. Securities held in the Fund that JPMorgan believes have become overvalued and/or whose factor signals have deteriorated materially may be sold and are generally replaced with more attractive securities on the basis of JPMorgan's disciplined investment process. The portfolio construction process controls the sector and industry weights, number of stocks held, and position size. Risk or factor exposures are actively managed through portfolio construction. JPMorgan utilizes currency specialists in determining the extent and nature of the Fund's exposure to various foreign currencies. Van Eck Associates Corporation Van Eck selects emerging market countries that the Fund will invest in based on its evaluation of economic fundamentals, legal structure, political developments and other specific factors Van Eck believes to be relevant. Utilizing qualitative and quantitative measures, Van Eck seeks to invest in what it believes are reasonably-priced companies that have strong structural growth potential. Van Eck seeks attractive investment opportunities in all areas of emerging markets, and utilizes a flexible investment approach across all market capitalizations.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS
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 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 investments, 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. 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, and auditing standards; 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. 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, market interest rates in the United States are at or near historic lows, 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. For funds that invest 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. 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. Investing Through Stock Connect: The Hong Kong – Shanghai Stock Connect program (“Stock Connect”) allows non-Chinese investors (such as the Fund) to purchase certain Shanghai Stock Exchange-listed equities (“China A-shares”) via brokers in Hong Kong. Purchases of securities through Stock Connect are subject to market-wide quota limitations. Additionally, an investor cannot purchase and sell the same security on the same trading day, which may restrict the ability to invest in China A-shares through Stock Connect and to enter into or exit trades where it is advantageous to do so on the same trading day. Only certain China A-shares are eligible to be accessed through Stock Connect. Such securities may lose their eligibility at any time, in which case they could be sold but could no longer be purchased through Stock Connect. Because Stock Connect is relatively new, its effects on the market for trading China A-shares are uncertain. In addition, the trading, settlement and IT systems required to operate Stock Connect are relatively new and continue to evolve. Stock Connect is subject to regulation by both Hong Kong and China. There can be no assurance that further regulations will not affect the availability of securities in the program, the frequency of redemptions or other limitations. Stock Connect transactions are not covered by investor protection programs of either the Hong Kong or Shanghai Stock Exchanges, although any default by a Hong Kong broker should be subject to established Hong Kong law. Finally, uncertainties in the People’s Republic of China’s tax rules governing taxation of income and gains from investments in Stock Connect A-shares could result in unexpected tax liabilities for the Fund. The withholding tax treatment of dividends and capital gains payable to overseas investors currently is unsettled. Investment Model: A manager’s proprietary model may not adequately allow for existing or unforeseen market factors or the interplay between such factors. Funds that are actively managed, in whole or in part, according to a quantitative investment model can perform differently from the market as a whole based on the investment model and the factors used in the analysis, the weight placed on each factor, and changes from the factors’ historical trends. Issues in the construction and implementation of the investment models (including, for example, data problems and/or software issues) may create errors or limitations that might go undetected or are discovered only after the errors or limitations have negatively impacted performance. There is no guarantee that the use of these investment models will result in effective investment decisions for the Fund. 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 the 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. 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. Real Estate Companies and Real Estate Investment Trusts (“REITs”): 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, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. 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. 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	You could lose money on an investment in the Fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	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.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	PERFORMANCE INFORMATION
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. Other class shares’ performance would be higher or lower than Class A shares' performance because of the higher or lower expenses paid by Class A shares. The Fund's past performance (before and after taxes) is no guarantee of future results. For the most recent performance figures, go to www.voyainvestments.com/literature or call 1-800-992-0180.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	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.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	1-800-992-0180
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.voyainvestments.com/literature
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund's past performance (before and after taxes) is no guarantee of future results.
Bar Chart [Heading]	rr_BarChartHeading	Calendar Year Total Returns Class A (as of December 31 of each year)
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	Sales charges are not reflected in the bar chart. If they were, returns would be less than those shown.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best quarter: 1st 2012, 13.89% and Worst quarter: 3rd 2015, -18.55%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns % (for the periods ended December 31, 2015)
Performance Table Does Reflect Sales Loads	rr_PerformanceTableDoesReflectSalesLoads	However, the table includes all applicable fees and sales charges.
Index No Deduction for Fees, Expenses, Taxes [Text]	rr_IndexNoDeductionForFeesExpensesTaxes	The index returns include the reinvestment of dividends and distributions net of withholding taxes, but do not reflect fees, brokerage commissions, or other expenses.
Voya Multi-Manager Emerging Markets Equity Fund | Class A
Risk/Return:	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]
Management Fee	rr_ManagementFeesOverAssets	1.10%	[2]
Distribution and/or Shareholder Services (12b-1) Fee	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.47%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.82%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.22%)	[3]
Total Annual Fund Operating Expenses after Waivers and Reimbursements	rr_NetExpensesOverAssets	1.60%
1 Yr	rr_ExpenseExampleYear01	$ 728
3 Yrs	rr_ExpenseExampleYear03	1,094
5 Yrs	rr_ExpenseExampleYear05	1,484
10 Yrs	rr_ExpenseExampleYear10	2,572
1 Yr	rr_ExpenseExampleNoRedemptionYear01	728
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	1,094
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	1,484
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 2,572
2006	rr_AnnualReturn2006
2007	rr_AnnualReturn2007
2008	rr_AnnualReturn2008
2009	rr_AnnualReturn2009
2010	rr_AnnualReturn2010
2011	rr_AnnualReturn2011
2012	rr_AnnualReturn2012	15.25%
2013	rr_AnnualReturn2013	1.33%
2014	rr_AnnualReturn2014	(7.33%)
2015	rr_AnnualReturn2015	(15.60%)
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Mar. 31, 2012
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	13.89%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2015
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(18.55%)
1 Yr	rr_AverageAnnualReturnYear01	(20.44%)	[4]
5 Yrs	rr_AverageAnnualReturnYear05		[4]
10 Yrs	rr_AverageAnnualReturnYear10		[4]
Since Inception	rr_AverageAnnualReturnSinceInception	(3.03%)	[4]
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 11, 2011	[4]
Voya Multi-Manager Emerging Markets Equity Fund | Class B
Risk/Return:	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	5.00%
Management Fee	rr_ManagementFeesOverAssets	1.10%	[2]
Distribution and/or Shareholder Services (12b-1) Fee	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses	rr_OtherExpensesOverAssets	0.47%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.57%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.22%)	[3]
Total Annual Fund Operating Expenses after Waivers and Reimbursements	rr_NetExpensesOverAssets	2.35%
1 Yr	rr_ExpenseExampleYear01	$ 738
3 Yrs	rr_ExpenseExampleYear03	1,079
5 Yrs	rr_ExpenseExampleYear05	1,546
10 Yrs	rr_ExpenseExampleYear10	2,705
1 Yr	rr_ExpenseExampleNoRedemptionYear01	238
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	779
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	1,346
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 2,705
1 Yr	rr_AverageAnnualReturnYear01	(20.37%)	[4]
5 Yrs	rr_AverageAnnualReturnYear05		[4]
10 Yrs	rr_AverageAnnualReturnYear10		[4]
Since Inception	rr_AverageAnnualReturnSinceInception	(4.19%)	[4]
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 20, 2012	[4]
Voya Multi-Manager Emerging Markets Equity Fund | Class C
Risk/Return:	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	1.00%
Management Fee	rr_ManagementFeesOverAssets	1.10%	[2]
Distribution and/or Shareholder Services (12b-1) Fee	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses	rr_OtherExpensesOverAssets	0.47%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.57%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.22%)	[3]
Total Annual Fund Operating Expenses after Waivers and Reimbursements	rr_NetExpensesOverAssets	2.35%
1 Yr	rr_ExpenseExampleYear01	$ 338
3 Yrs	rr_ExpenseExampleYear03	779
5 Yrs	rr_ExpenseExampleYear05	1,346
10 Yrs	rr_ExpenseExampleYear10	2,889
1 Yr	rr_ExpenseExampleNoRedemptionYear01	238
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	779
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	1,346
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 2,889
1 Yr	rr_AverageAnnualReturnYear01	(17.04%)	[4]
5 Yrs	rr_AverageAnnualReturnYear05		[4]
10 Yrs	rr_AverageAnnualReturnYear10		[4]
Since Inception	rr_AverageAnnualReturnSinceInception	(2.40%)	[4]
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 11, 2011	[4]
Voya Multi-Manager Emerging Markets Equity Fund | Class I
Risk/Return:	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
Management Fee	rr_ManagementFeesOverAssets	1.10%	[2]
Distribution and/or Shareholder Services (12b-1) Fee	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.24%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.34%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.09%)	[3]
Total Annual Fund Operating Expenses after Waivers and Reimbursements	rr_NetExpensesOverAssets	1.25%
1 Yr	rr_ExpenseExampleYear01	$ 127
3 Yrs	rr_ExpenseExampleYear03	416
5 Yrs	rr_ExpenseExampleYear05	725
10 Yrs	rr_ExpenseExampleYear10	1,605
1 Yr	rr_ExpenseExampleNoRedemptionYear01	127
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	416
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	725
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 1,605
1 Yr	rr_AverageAnnualReturnYear01	(15.29%)	[4]
5 Yrs	rr_AverageAnnualReturnYear05		[4]
10 Yrs	rr_AverageAnnualReturnYear10		[4]
Since Inception	rr_AverageAnnualReturnSinceInception	(1.34%)	[4]
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 11, 2011	[4]
Voya Multi-Manager Emerging Markets Equity Fund | Class R
Risk/Return:	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
Management Fee	rr_ManagementFeesOverAssets	1.10%	[2]
Distribution and/or Shareholder Services (12b-1) Fee	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other Expenses	rr_OtherExpensesOverAssets	0.47%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.07%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.22%)	[3]
Total Annual Fund Operating Expenses after Waivers and Reimbursements	rr_NetExpensesOverAssets	1.85%
1 Yr	rr_ExpenseExampleYear01	$ 188
3 Yrs	rr_ExpenseExampleYear03	628
5 Yrs	rr_ExpenseExampleYear05	1,093
10 Yrs	rr_ExpenseExampleYear10	2,383
1 Yr	rr_ExpenseExampleNoRedemptionYear01	188
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	628
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	1,093
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 2,383
1 Yr	rr_AverageAnnualReturnYear01	(15.85%)	[4]
5 Yrs	rr_AverageAnnualReturnYear05		[4]
10 Yrs	rr_AverageAnnualReturnYear10		[4]
Since Inception	rr_AverageAnnualReturnSinceInception	(1.91%)	[4]
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 11, 2011	[4]
Voya Multi-Manager Emerging Markets Equity Fund | Class W
Risk/Return:	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
Management Fee	rr_ManagementFeesOverAssets	1.10%	[2]
Distribution and/or Shareholder Services (12b-1) Fee	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.47%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.57%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.22%)	[3]
Total Annual Fund Operating Expenses after Waivers and Reimbursements	rr_NetExpensesOverAssets	1.35%
1 Yr	rr_ExpenseExampleYear01	$ 137
3 Yrs	rr_ExpenseExampleYear03	474
5 Yrs	rr_ExpenseExampleYear05	834
10 Yrs	rr_ExpenseExampleYear10	1,849
1 Yr	rr_ExpenseExampleNoRedemptionYear01	137
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	474
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	834
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 1,849
1 Yr	rr_AverageAnnualReturnYear01	(15.33%)	[4]
5 Yrs	rr_AverageAnnualReturnYear05		[4]
10 Yrs	rr_AverageAnnualReturnYear10		[4]
Since Inception	rr_AverageAnnualReturnSinceInception	(1.40%)	[4]
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 11, 2011	[4]
Voya Multi-Manager Emerging Markets Equity Fund | After tax on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(20.53%)	[4]
5 Yrs	rr_AverageAnnualReturnYear05		[4]
10 Yrs	rr_AverageAnnualReturnYear10		[4]
Since Inception	rr_AverageAnnualReturnSinceInception	(3.20%)	[4]
Voya Multi-Manager Emerging Markets Equity Fund | After tax on distributions with sale | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(11.27%)	[4]
5 Yrs	rr_AverageAnnualReturnYear05		[4]
10 Yrs	rr_AverageAnnualReturnYear10		[4]
Since Inception	rr_AverageAnnualReturnSinceInception	(2.08%)	[4]
Voya Multi-Manager Emerging Markets Equity Fund | MSCI Emerging Markets Index | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(14.92%)	[4],[5]
5 Yrs	rr_AverageAnnualReturnYear05		[4],[5]
10 Yrs	rr_AverageAnnualReturnYear10		[4],[5]
Since Inception	rr_AverageAnnualReturnSinceInception	(0.77%)	[4],[5]
Voya Multi-Manager Emerging Markets Equity Fund | MSCI Emerging Markets Index | Class B
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(14.92%)	[4],[5]
5 Yrs	rr_AverageAnnualReturnYear05		[4],[5]
10 Yrs	rr_AverageAnnualReturnYear10		[4],[5]
Since Inception	rr_AverageAnnualReturnSinceInception	(2.39%)	[4],[5]
Voya Multi-Manager Emerging Markets Equity Fund | MSCI Emerging Markets Index | Class C
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(14.92%)	[4],[5]
5 Yrs	rr_AverageAnnualReturnYear05		[4],[5]
10 Yrs	rr_AverageAnnualReturnYear10		[4],[5]
Since Inception	rr_AverageAnnualReturnSinceInception	(0.77%)	[4],[5]
Voya Multi-Manager Emerging Markets Equity Fund | MSCI Emerging Markets Index | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(14.92%)	[4],[5]
5 Yrs	rr_AverageAnnualReturnYear05		[4],[5]
10 Yrs	rr_AverageAnnualReturnYear10		[4],[5]
Since Inception	rr_AverageAnnualReturnSinceInception	(0.77%)	[4],[5]
Voya Multi-Manager Emerging Markets Equity Fund | MSCI Emerging Markets Index | Class R
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(14.92%)	[4],[5]
5 Yrs	rr_AverageAnnualReturnYear05		[4],[5]
10 Yrs	rr_AverageAnnualReturnYear10		[4],[5]
Since Inception	rr_AverageAnnualReturnSinceInception	(0.77%)	[4],[5]
Voya Multi-Manager Emerging Markets Equity Fund | MSCI Emerging Markets Index | Class W
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(14.92%)	[4],[5]
5 Yrs	rr_AverageAnnualReturnYear05		[4],[5]
10 Yrs	rr_AverageAnnualReturnYear10		[4],[5]
Since Inception	rr_AverageAnnualReturnSinceInception	(0.77%)	[4],[5]

[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] The portion of the management fee attributable to the advisory services is 1.05% and the portion of the management fee attributable to the administrative services is 0.05%.

[3] The adviser is contractually obligated to limit expenses to 1.60%, 2.35%, 2.35%, 1.35%, 1.85%, and 1.35% for Class A, Class B, Class C, Class I, Class R, and Class W shares, respectively, through March 1, 2017. In addition, the adviser is contractually obligated to further limit expenses of Class I shares to 1.25% through March 1, 2017. The limitations do not extend to interest, taxes, investment-related costs, leverage expenses, extraordinary expenses, and Acquired Fund Fees and Expenses. The limitations are subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive a portion of the management fee through March 1, 2017. The management fee waiver for the Fund is an estimated 0.01%. Termination or modification of these obligations requires approval by the Fund’s board.

[4] Prior to August 24, 2015 the Fund had different sub-advisers.

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