485BPOS

As filed with the Securities and Exchange Commission on June 16, 2017

Securities Act File No. 333-56881

Investment Company Act File No. 811-8817

U.S. SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

Registration Statement Under The Securities Act Of 1933	☒
Pre-Effective Amendment No.	☐
Post-Effective Amendment No. 150	☒
and/or
Registration Statement Under The Investment Company Act Of 1940	☒
Amendment No. 157 (Check appropriate box or boxes)	☒

VOYA EQUITY TRUST

(Exact Name of Registrant Specified in Charter)

7337 E. Doubletree Ranch Road, Suite 100

Scottsdale, AZ 85258

(Address of Principal Executive Offices)

Registrant’s Telephone Number, Including Area Code: (800) 992-0180

Huey P. Falgout, Jr. Voya Investments, LLC 7337 E. Doubletree Ranch Road Scottsdale, AZ 85258 (Name and Address of Agent for Service) With copies to: Elizabeth J. Reza Ropes & Gray LLP Prudential Tower 800 Boylston Street Boston, MA 02199-3600

APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING

It is proposed that this filing will become effective (check appropriate box):

☒       Immediately upon filing pursuant to paragraph (b)	☐       on (date) pursuant to paragraph (b)
☐       60 days after filing pursuant to paragraph (a)(1)	☐       on (date) pursuant to paragraph (a)(1)
☐       75 days after filing pursuant to paragraph (a)(2)	☐       on (date) pursuant to paragraph (a)(2) of Rule 485

  If appropriate, check the following box:

  ☐     This post-effective amendment designated a new effective date for a previously filed post-effective amendment.

  Title of Securities Being Registered: Shares of Beneficial Interest, par value $.01 per share.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended (the “1933 Act”), and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all the requirements for effectiveness of this Post-Effective Amendment No. 150 to its Registration Statement on Form N-1A pursuant to Rule 485(b) under the 1933 Act and has duly caused this Post-Effective Amendment No. 150 to its Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the city of Scottsdale and State of Arizona on the 16th day of June, 2017.

VOYA EQUITY TRUST
By:	/s/ Huey P. Falgout, Jr.
	Huey P. Falgout, Jr.
	Secretary

Pursuant to the requirements of the 1933 Act, this Post-Effective Amendment to the Registration Statement has been signed by the following persons in the capacities and on the date indicated.

Signature	Title	Date
	President, Chief Executive Officer and Interested Trustee	June 16, 2017
Shaun P. Mathews*
	Senior Vice President and Chief/Principal Financial Officer	June 16, 2017
Todd Modic*
	Trustee	June 16, 2017
Colleen D. Baldwin*
	Trustee	June 16, 2017
John V. Boyer*
	Trustee	June 16, 2017
Patricia W. Chadwick*
	Trustee	June 16, 2017
Peter S. Drotch*
	Trustee	June 16, 2017
Martin J. Gavin *
	Trustee	June 16, 2017
Russell H. Jones*
	Trustee	June 16, 2017
Patrick W. Kenny*

1

	Trustee	June 16, 2017
Joseph E. Obermeyer*
	Trustee	June 16, 2017
Sheryl K. Pressler*
	Trustee	June 16, 2017
Christopher P. Sullivan*
	Trustee	June 16, 2017
Roger B. Vincent*

*By: /s/ Huey P. Falgout, Jr.

Huey P. Falgout, Jr.

Attorney-in-Fact**

** Powers of attorney for Shaun Mathews, Todd Modic and each Director dated July 9, 2015 were filed as attachments to Post-Effective Amendment No. 190 to the Registrant’s Form N-1A Registration Statement on July 29, 2015 and are incorporated herein by reference. The Power of Attorney for Martin J. Gavin, dated August 1, 2015, was filed as an attachment to Post-Effective Amendment No. 193 to the Registrant’s Form N-1A Registration Statement on September 28, 2015 and is incorporated herein by reference. The Power of Attorney for Christopher P. Sullivan, dated October 1, 2015, was filed as an attachment to Post-Effective Amendment No. 194 to the Registrant’s N-1A Registration Statement on October 19, 2015 and incorporated herein by reference.

2

EXHIBIT INDEX

Voya Equity Trust

Exhibit No.	Description
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.CAL	XBRL Taxonomy Extension Calculation Linkbase
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase

3

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Document Type	dei_DocumentType	485BPOS
Document Period End Date	dei_DocumentPeriodEndDate	Nov. 30, 2016
Registrant Name	dei_EntityRegistrantName	Voya EQUITY TRUST
Central Index Key	dei_EntityCentralIndexKey	0001063946
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	May 25, 2017
Document Effective Date	dei_DocumentEffectiveDate	May 31, 2017
Prospectus Date	rr_ProspectusDate	May 31, 2017

XML

Voya Large-Cap Growth Fund

Voya Large-Cap Growth Fund  (formerly, Voya Growth Opportunities Fund)

INVESTMENT OBJECTIVE

The Fund seeks long-term capital appreciation.

FEES AND EXPENSES OF THE FUND

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 invest at least $250,000 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 34) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 114).

Shareholder Fees
Fees paid directly from your investment

Shareholder Fees	Maximum sales charge (load) as a % of offering price	Maximum deferred sales charge as a % of purchase or sales price, whichever is less
Voya Large-Cap Growth Fund | Class T	2.50%	none

Annual Fund Operating Expenses
Expenses you pay each year as a % of the value of your investment

Annual Fund Operating Expenses	Voya Large-Cap Growth Fund Class T
Management Fees	0.80%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	0.29%	[1]
Total Annual Fund Operating Expenses	1.34%
Waivers and Reimbursements	(0.20%)	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	1.14%

Expense Example

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Large-Cap Growth Fund | Class T | USD ($)	363	645	947	1,805

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Large-Cap Growth Fund | Class T | USD ($)	363	645	947	1,805

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.

Portfolio Turnover

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 70% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

Under normal market conditions, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes) in common stocks of large-capitalization companies. The Fund will provide shareholders with at least 60 days’ prior notice of any change in this investment policy. The Fund’s investment strategy uses a stock selection process that combines the discipline of quantitative screens with rigorous fundamental security analysis. The quantitative screens focus the fundamental analysis by identifying the stocks of companies with strong business momentum that demonstrate relative price strength, and have a perceived value not reflected in the current price. The objective of the fundamental analysis is to confirm the persistence of the company’s revenue and earnings growth, and validate the expectations for earnings estimate revisions, particularly relative to consensus estimates. A determination of reasonable valuation for individual securities is based on the judgment of the Sub-Adviser (“Sub-Adviser”).

For this Fund, the Sub-Adviser defines large-capitalization companies as companies with market capitalizations which fall within the range of companies in the Russell 1000^® Growth Index (“Index”) at the time of purchase. The market capitalization of companies within the Index will change with market conditions. The market capitalization of companies in the Index as of June 30, 2016 ranged from $313.2 million to $523.6 billion.

The Fund may also invest in derivative instruments, which include, but are not limited to, index futures and options to hedge against market risk or to enhance returns. The Fund may also invest up to 25% of its assets in foreign securities.

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”).

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 30% of its total assets.

PRINCIPAL RISKS

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.

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 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: 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.

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.

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 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.

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.

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.

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.

PERFORMANCE INFORMATION

The following information is intended to help you understand the risks of investing in the Fund. Because Class T shares of the Fund had not commenced operations as of the calendar year ended December 31, 2016, the following bar chart shows the changes in the Fund's Class A shares' performance from year to year, and the table compares the Fund's Class A shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class A shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. However, Class T shares' performance would be different from Class A shares' performance due principally to the higher maximum sales charge paid by Class A shares. 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. 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.

The Fund’s performance prior to January 26, 2009 reflects returns achieved by a different sub-adviser and pursuant to different principal investment strategies. If the Fund’s current sub-adviser 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 www.voyainvestments.com/literature or call 1-800-992-0180.

Calendar Year Total Returns Class A
(as of December 31 of each year)

Best quarter: 1^st 2012, 17.72% and Worst quarter: 4^th 2008, -21.12%

The Fund's Class A shares' year-to-date total return as of March 31, 2017: 9.24%

Average Annual Total Returns %
(for the periods ended December 31, 2016)

Average Annual Total Returns - Voya Large-Cap Growth Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class A		(2.46%)	12.14%	6.88%		Jul. 21, 1997
Class A | After tax on distributions		(3.67%)	10.33%	6.01%
Class A | After tax on distributions with sale		(0.39%)	9.32%	5.38%
Russell 1000® Growth Index	[1]	7.08%	14.50%	8.33%

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. 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.

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] The adviser and distributor are contractually obligated to limit expenses to 1.15%, for Class T shares, through October 1, 2018. In addition, the adviser is contractually obligated to further limit expenses to 1.14% for Class T shares through October 1, 2018. The limitations do not extend to interest, taxes, investment-related costs, leverage expenses, extraordinary expenses, and Acquired Fund Fees and Expenses. These limitations are subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. Termination or modification of these obligations requires approval by the Fund’s board.

[1] The index returns do not reflect deductions for fees, expenses, or taxes.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Voya EQUITY TRUST
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya Large-Cap Growth Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Large-Cap Growth Fund  (formerly, Voya Growth Opportunities 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 invest at least $250,000 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 34) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 114).
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	October 1, 2018
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 Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 70% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	70.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you invest at least $250,000 in Voya mutual funds.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 250,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Other Expenses are based on estimated amounts for the current fiscal year.
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
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. 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 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.
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 common stocks of large-capitalization companies. The Fund will provide shareholders with at least 60 days’ prior notice of any change in this investment policy. The Fund’s investment strategy uses a stock selection process that combines the discipline of quantitative screens with rigorous fundamental security analysis. The quantitative screens focus the fundamental analysis by identifying the stocks of companies with strong business momentum that demonstrate relative price strength, and have a perceived value not reflected in the current price. The objective of the fundamental analysis is to confirm the persistence of the company’s revenue and earnings growth, and validate the expectations for earnings estimate revisions, particularly relative to consensus estimates. A determination of reasonable valuation for individual securities is based on the judgment of the Sub-Adviser (“Sub-Adviser”). For this Fund, the Sub-Adviser defines large-capitalization companies as companies with market capitalizations which fall within the range of companies in the Russell 1000® Growth Index (“Index”) at the time of purchase. The market capitalization of companies within the Index will change with market conditions. The market capitalization of companies in the Index as of June 30, 2016 ranged from $313.2 million to $523.6 billion. The Fund may also invest in derivative instruments, which include, but are not limited to, index futures and options to hedge against market risk or to enhance returns. The Fund may also invest up to 25% of its assets in foreign securities. 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”). 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 30% of its total assets.
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. 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 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: 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. 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. 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 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. 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. 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. 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. Because Class T shares of the Fund had not commenced operations as of the calendar year ended December 31, 2016, the following bar chart shows the changes in the Fund's Class A shares' performance from year to year, and the table compares the Fund's Class A shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class A shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. However, Class T shares' performance would be different from Class A shares' performance due principally to the higher maximum sales charge paid by Class A shares. 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. 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. The Fund’s performance prior to January 26, 2009 reflects returns achieved by a different sub-adviser and pursuant to different principal investment strategies. If the Fund’s current sub-adviser 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 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 Class A shares' performance from year to year, and the table compares the Fund's Class A shares' performance to the performance of a broad-based securities market index/indices for the same period.
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Class T shares of the Fund had not commenced operations as of the calendar year ended December 31, 2016
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, 17.72% and Worst quarter: 4th 2008, -21.12% The Fund's Class A shares' year-to-date total return as of March 31, 2017: 9.24%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class A shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. However, Class T shares' performance would be different from Class A shares' performance due principally to the higher maximum sales charge paid by Class A shares.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns % (for the periods ended December 31, 2016)
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 do not reflect deductions for fees, expenses, or taxes.
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	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.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	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.
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	After-tax returns are shown for Class A shares only. After-tax returns for other classes will vary.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	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.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	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. 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.
Voya Large-Cap Growth Fund | Class T
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) as a % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	2.50%
Maximum deferred sales charge as a % of purchase or sales price, whichever is less	rr_MaximumDeferredSalesChargeOverOther	none
Management Fees	rr_ManagementFeesOverAssets	0.80%
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.29%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.34%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.20%)	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	1.14%
1 Yr	rr_ExpenseExampleYear01	$ 363
3 Yrs	rr_ExpenseExampleYear03	645
5 Yrs	rr_ExpenseExampleYear05	947
10 Yrs	rr_ExpenseExampleYear10	1,805
1 Yr	rr_ExpenseExampleNoRedemptionYear01	363
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	645
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	947
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 1,805
Voya Large-Cap Growth Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007	16.42%
2008	rr_AnnualReturn2008	(42.17%)
2009	rr_AnnualReturn2009	31.39%
2010	rr_AnnualReturn2010	19.64%
2011	rr_AnnualReturn2011	3.69%
2012	rr_AnnualReturn2012	18.54%
2013	rr_AnnualReturn2013	28.43%
2014	rr_AnnualReturn2014	12.86%
2015	rr_AnnualReturn2015	5.81%
2016	rr_AnnualReturn2016	3.48%
Year to Date Return, Label	rr_YearToDateReturnLabel	year-to-date total return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2017
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	9.24%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Mar. 31, 2012
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	17.72%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(21.12%)
1 Yr	rr_AverageAnnualReturnYear01	(2.46%)
5 Yrs	rr_AverageAnnualReturnYear05	12.14%
10 Yrs	rr_AverageAnnualReturnYear10	6.88%
Since Inception	rr_AverageAnnualReturnSinceInception
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 21, 1997
Voya Large-Cap Growth Fund | After tax on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(3.67%)
5 Yrs	rr_AverageAnnualReturnYear05	10.33%
10 Yrs	rr_AverageAnnualReturnYear10	6.01%
Since Inception	rr_AverageAnnualReturnSinceInception
Voya Large-Cap Growth Fund | After tax on distributions with sale | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(0.39%)
5 Yrs	rr_AverageAnnualReturnYear05	9.32%
10 Yrs	rr_AverageAnnualReturnYear10	5.38%
Since Inception	rr_AverageAnnualReturnSinceInception
Voya Large-Cap Growth Fund | Russell 1000® Growth Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	7.08%	[3]
5 Yrs	rr_AverageAnnualReturnYear05	14.50%	[3]
10 Yrs	rr_AverageAnnualReturnYear10	8.33%	[3]
Since Inception	rr_AverageAnnualReturnSinceInception		[3]

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] The adviser and distributor are contractually obligated to limit expenses to 1.15%, for Class T shares, through October 1, 2018. In addition, the adviser is contractually obligated to further limit expenses to 1.14% for Class T shares through October 1, 2018. The limitations do not extend to interest, taxes, investment-related costs, leverage expenses, extraordinary expenses, and Acquired Fund Fees and Expenses. These limitations are subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. Termination or modification of these obligations requires approval by the Fund’s board.

[3] The index returns do not reflect deductions for fees, expenses, or taxes.

XML

Voya Large Cap Value Fund

Voya Large Cap Value Fund

INVESTMENT OBJECTIVE

The Fund seeks long-term growth of capital and current income.

FEES AND EXPENSES OF THE FUND

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 invest at least $250,000 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 34) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 114).

Shareholder Fees
Fees paid directly from your investment

Shareholder Fees	Maximum sales charge (load) as a % of offering price	Maximum deferred sales charge as a % of purchase or sales price, whichever is less
Voya Large Cap Value Fund | Class T	2.50%	none

Annual Fund Operating Expenses
Expenses you pay each year as a % of the value of your investment

Annual Fund Operating Expenses	Voya Large Cap Value Fund Class T
Management Fees	0.75%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	0.20%	[1]
Total Annual Fund Operating Expenses	1.20%
Waivers and Reimbursements	(0.10%)	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	1.10%

Expense Example

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Large Cap Value Fund | Class T | USD ($)	359	612	884	1,660

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Large Cap Value Fund | Class T | USD ($)	359	612	884	1,660

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.

Portfolio Turnover

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 116% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

Under normal market conditions, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes) in equity securities of dividend-paying, large-capitalization issuers. The Fund will provide shareholders with at least 60 days' prior notice of any change in this investment policy. Equity securities include common and preferred stocks, warrants, and convertible securities. For this Fund, the sub-adviser (“Sub-Adviser”) defines large-capitalization companies as companies with market capitalizations that fall within the collective range of companies within the Russell 1000^® Value Index (“Index”) at the time of purchase. The market capitalization of companies within the Index will change with market conditions. The market capitalization of companies in the Index as of June 30, 2016 ranged from $313.2 million to $523.6 billion. The Fund may invest in foreign securities, including companies located in countries with emerging securities markets, when the Sub-Adviser believes they present attractive investment opportunities. The Fund may invest in real estate-related securities, including real estate investment trusts.

The Sub-Adviser seeks to construct a portfolio of securities with a dividend yield at or above the average dividend yield of the companies included in the Russell 1000^® Value Index. 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”).

The Sub-Adviser uses a valuation-based screening process to assist in the selection of companies according to criteria which include the following:

• an above-average dividend yield, and stability and growth of the dividend; and

• market capitalization that is usually above $1 billion (although the Fund may also invest up to 20% of its assets in small- and mid-capitalization companies).

The Sub-Adviser may from time to time select securities that do not meet all of these criteria. The Sub-Adviser then conducts intensive fundamental research on each company to evaluate its growth, profitability, and valuation characteristics.

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.

PRINCIPAL RISKS

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.

Dividend: Companies that issue dividend yielding equity securities are not required to continue to pay dividends on such securities. Therefore, there is the possibility that such companies could reduce or eliminate the payment of dividends in the future. As a result, the Fund’s ability to execute its investment strategy may be limited.

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.

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. 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.

Investment Model: A manager’s proprietary model may not adequately allow for 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 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.

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.

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.

PERFORMANCE INFORMATION

The following information is intended to help you understand the risks of investing in the Fund. Because Class T shares of the Fund had not commenced operations as of the calendar year ended December 31, 2016, the following bar chart shows the changes in the Fund's Class A shares' performance from year to year, and the table compares the Fund's Class A shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class A shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. However, Class T shares' performance would be different from Class A shares' performance due principally to the higher maximum sales charge paid by Class A shares. 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. 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.

The Fund’s performance prior to May 18, 2012 reflects returns achieved pursuant to a different investment objective and different principal investment strategies. If the Fund’s current investment objective 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 www.voyainvestments.com/literature or call 1-800-992-0180.

Calendar Year Total Returns Class A
(as of December 31 of each year)

Best quarter: 3^rd 2009, 18.23% and Worst quarter: 4^th 2008, -16.78%

The Fund's Class A shares' year-to-date total return as of March 31, 2017: 4.87%

Average Annual Total Returns %
(for the periods ended December 31, 2016)

Average Annual Total Returns - Voya Large Cap Value Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class A		6.71%	10.57%		6.69%	Dec. 18, 2007
Class A | After tax on distributions		6.20%	6.64%		4.87%
Class A | After tax on distributions with sale		4.17%	6.29%		4.62%
Russell 1000® Value Index	[1]	17.34%	14.80%		6.49%

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. 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.

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] The adviser is contractually obligated to limit expenses to 1.25% for Class T shares, through October 1, 2018. In addition, the adviser is contractually obligated to further limit expenses to 1.10% for Class T shares through October 1, 2018. The limitations do not extend to interest, taxes, investment-related costs, leverage expenses, extraordinary expenses, and Acquired Fund Fees and Expenses. These limitations are subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. Termination or modification of these obligations requires approval by the Fund’s board.

[1] The index returns do not reflect deductions for fees, expenses, or taxes.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Voya EQUITY TRUST
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya Large Cap Value Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Large Cap Value Fund
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund seeks long-term growth of capital and current income.
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 invest at least $250,000 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 34) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 114).
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	October 1, 2018
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 Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 116% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	116.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you invest at least $250,000 in Voya mutual funds.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 250,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Other Expenses are based on estimated amounts for the current fiscal year.
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
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. 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 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.
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 dividend-paying, large-capitalization issuers. The Fund will provide shareholders with at least 60 days' prior notice of any change in this investment policy. Equity securities include common and preferred stocks, warrants, and convertible securities. For this Fund, the sub-adviser (“Sub-Adviser”) defines large-capitalization companies as companies with market capitalizations that fall within the collective range of companies within the Russell 1000® Value Index (“Index”) at the time of purchase. The market capitalization of companies within the Index will change with market conditions. The market capitalization of companies in the Index as of June 30, 2016 ranged from $313.2 million to $523.6 billion. The Fund may invest in foreign securities, including companies located in countries with emerging securities markets, when the Sub-Adviser believes they present attractive investment opportunities. The Fund may invest in real estate-related securities, including real estate investment trusts. The Sub-Adviser seeks to construct a portfolio of securities with a dividend yield at or above the average dividend yield of the companies included in the Russell 1000® Value Index. 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”). The Sub-Adviser uses a valuation-based screening process to assist in the selection of companies according to criteria which include the following: an above-average dividend yield, and stability and growth of the dividend; and market capitalization that is usually above $1 billion (although the Fund may also invest up to 20% of its assets in small- and mid-capitalization companies). The Sub-Adviser may from time to time select securities that do not meet all of these criteria. The Sub-Adviser then conducts intensive fundamental research on each company to evaluate its growth, profitability, and valuation characteristics. 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	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 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. Dividend: Companies that issue dividend yielding equity securities are not required to continue to pay dividends on such securities. Therefore, there is the possibility that such companies could reduce or eliminate the payment of dividends in the future. As a result, the Fund’s ability to execute its investment strategy may be limited. 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. 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. 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. Investment Model: A manager’s proprietary model may not adequately allow for 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 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. 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. 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. Because Class T shares of the Fund had not commenced operations as of the calendar year ended December 31, 2016, the following bar chart shows the changes in the Fund's Class A shares' performance from year to year, and the table compares the Fund's Class A shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class A shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. However, Class T shares' performance would be different from Class A shares' performance due principally to the higher maximum sales charge paid by Class A shares. 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. 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. The Fund’s performance prior to May 18, 2012 reflects returns achieved pursuant to a different investment objective and different principal investment strategies. If the Fund’s current investment objective 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 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 Class A shares' performance from year to year, and the table compares the Fund's Class A shares' performance to the performance of a broad-based securities market index/indices for the same period.
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Class T shares of the Fund had not commenced operations as of the calendar year ended December 31, 2016
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: 3rd 2009, 18.23% and Worst quarter: 4th 2008, -16.78% The Fund's Class A shares' year-to-date total return as of March 31, 2017: 4.87%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class A shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. However, Class T shares' performance would be different from Class A shares' performance due principally to the higher maximum sales charge paid by Class A shares.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns % (for the periods ended December 31, 2016)
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 do not reflect deductions for fees, expenses, or taxes.
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	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.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	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.
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	After-tax returns are shown for Class A shares only. After-tax returns for other classes will vary.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	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.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	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. 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.
Voya Large Cap Value Fund | Class T
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) as a % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	2.50%
Maximum deferred sales charge as a % of purchase or sales price, whichever is less	rr_MaximumDeferredSalesChargeOverOther	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.20%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.20%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.10%)	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	1.10%
1 Yr	rr_ExpenseExampleYear01	$ 359
3 Yrs	rr_ExpenseExampleYear03	612
5 Yrs	rr_ExpenseExampleYear05	884
10 Yrs	rr_ExpenseExampleYear10	1,660
1 Yr	rr_ExpenseExampleNoRedemptionYear01	359
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	612
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	884
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 1,660
Voya Large Cap Value Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007
2008	rr_AnnualReturn2008	(29.00%)
2009	rr_AnnualReturn2009	23.81%
2010	rr_AnnualReturn2010	19.94%
2011	rr_AnnualReturn2011	2.89%
2012	rr_AnnualReturn2012	14.12%
2013	rr_AnnualReturn2013	30.16%
2014	rr_AnnualReturn2014	9.53%
2015	rr_AnnualReturn2015	(4.86%)
2016	rr_AnnualReturn2016	13.27%
Year to Date Return, Label	rr_YearToDateReturnLabel	year-to-date total return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2017
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	4.87%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	18.23%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(16.78%)
1 Yr	rr_AverageAnnualReturnYear01	6.71%
5 Yrs	rr_AverageAnnualReturnYear05	10.57%
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	6.69%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 18, 2007
Voya Large Cap Value Fund | After tax on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	6.20%
5 Yrs	rr_AverageAnnualReturnYear05	6.64%
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	4.87%
Voya Large Cap Value Fund | After tax on distributions with sale | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	4.17%
5 Yrs	rr_AverageAnnualReturnYear05	6.29%
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	4.62%
Voya Large Cap Value Fund | Russell 1000® Value Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	17.34%	[3]
5 Yrs	rr_AverageAnnualReturnYear05	14.80%	[3]
10 Yrs	rr_AverageAnnualReturnYear10		[3]
Since Inception	rr_AverageAnnualReturnSinceInception	6.49%	[3]

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] The adviser is contractually obligated to limit expenses to 1.25% for Class T shares, through October 1, 2018. In addition, the adviser is contractually obligated to further limit expenses to 1.10% for Class T shares through October 1, 2018. The limitations do not extend to interest, taxes, investment-related costs, leverage expenses, extraordinary expenses, and Acquired Fund Fees and Expenses. These limitations are subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. Termination or modification of these obligations requires approval by the Fund’s board.

[3] The index returns do not reflect deductions for fees, expenses, or taxes.

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Voya MidCap Opportunities Fund

Voya MidCap Opportunities Fund

INVESTMENT OBJECTIVE

The Fund seeks long-term capital appreciation.

FEES AND EXPENSES OF THE FUND

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 invest at least $250,000 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 34) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 114).

Shareholder Fees
Fees paid directly from your investment

Shareholder Fees	Maximum sales charge (load) as a % of offering price	Maximum deferred sales charge as a % of purchase or sales price, whichever is less
Voya MidCap Opportunities Fund | Class T	2.50%	none

Annual Fund Operating Expenses
Expenses you pay each year as a % of the value of your investment

Annual Fund Operating Expenses	Voya MidCap Opportunities Fund Class T
Management Fees	0.84%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	0.25%	[1]
Total Annual Fund Operating Expenses	1.34%
Waivers and Reimbursements	(0.03%)	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	1.31%

Expense Example

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya MidCap Opportunities Fund | Class T | USD ($)	380	661	963	1,820

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya MidCap Opportunities Fund | Class T | USD ($)	380	661	963	1,820

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.

Portfolio Turnover

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 88% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

Under normal market conditions, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes) in common stocks of mid-sized U.S. companies. The Fund will provide shareholders with at least 60 days' prior notice of any change in this investment policy.

The Fund normally invests in companies that the sub-adviser (“Sub-Adviser”) believes have above average prospects for growth. For this Fund, the Sub-Adviser defines mid-sized companies as those companies with market capitalizations that fall within the range of companies in the Russell Midcap^® Growth Index (“Index”) at the time of purchase. The market capitalization of companies within the Index will change with market conditions. The market capitalization of companies in the Index as of June 30, 2016, ranged from $313.2 million to $28.6 billion.

The Fund may also invest in derivative instruments including futures or index futures that have a similar profile to the benchmark of the Fund. The Fund typically uses derivatives for the purpose of maintaining equity market exposure on its cash balance. The Fund may also invest in foreign securities.

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”).

In managing the Fund, the Sub-Adviser uses a stock selection process that combines the discipline of quantitative screens with rigorous fundamental security analysis. The quantitative screens focus the fundamental analysis by identifying the stocks of companies with strong business momentum that demonstrate relative price strength, and have a perceived value not reflected in the current price. The objective of the fundamental analysis is to confirm the persistence of the company's revenue and earnings growth and validate the Sub-Adviser’s expectations for earnings estimate revisions, particularly relative to consensus. A determination of reasonable valuation for individual securities is based on the judgment of the Sub-Adviser.

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.

PRINCIPAL RISKS

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.

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 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: 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.

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.

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.

Mid-Capitalization Company: Investments in mid-capitalization companies may involve greater risk than is customarily associated with larger, more established companies due to the greater business risks of a limited operating history, smaller size, limited markets and financial resources, narrow product lines, less management depth, and more reliance on key personnel. Consequently, the securities of mid-capitalization companies may have limited market stability and may be subject to more abrupt or erratic market movements than securities of larger, more established growth companies or the market averages in general.

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.

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.

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.

PERFORMANCE INFORMATION

The following information is intended to help you understand the risks of investing in the Fund. Because Class T shares of the Fund had not commenced operations as of the calendar year ended December 31, 2016, the following bar chart shows the changes in the Fund's Class A shares' performance from year to year, and the table compares the Fund's Class A shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class A shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. However, Class T shares' performance would be different from Class A shares' performance due principally to the higher maximum sales charge paid by Class A shares. 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. 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. 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.

Calendar Year Total Returns Class A
(as of December 31 of each year)

Best quarter: 3^rd 2009, 17.62% and Worst quarter: 4^th 2008, -23.42%

The Fund's Class A shares' year-to-date total return as of March 31, 2017: 8.65%

Average Annual Total Returns %
(for the periods ended December 31, 2016)

Average Annual Total Returns - Voya MidCap Opportunities Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class A		0.68%	10.17%	8.63%		Aug. 20, 1998
Class A | After tax on distributions		(0.83%)	8.02%	7.22%
Class A | After tax on distributions with sale		1.65%	7.80%	6.85%
Russell Midcap® Growth Index	[1]	7.33%	13.51%	7.83%
Russell Midcap® Index	[1]	13.80%	14.72%	7.86%

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. 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.

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] The adviser is contractually obligated to limit expenses to 1.35% for Class T shares, through October 1, 2018. In addition, the adviser is contractually obligated to further limit expenses to 1.31% for Class T shares through October 1, 2018. 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.

[1] The index returns do not reflect deductions for fees, expenses, or taxes.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Voya EQUITY TRUST
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya MidCap Opportunities Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya MidCap Opportunities 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 invest at least $250,000 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 34) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 114).
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	October 1, 2018
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 Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 88% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	88.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you invest at least $250,000 in Voya mutual funds.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 250,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Other Expenses are based on estimated amounts for the current fiscal year.
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
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. 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 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.
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 common stocks of mid-sized U.S. companies. The Fund will provide shareholders with at least 60 days' prior notice of any change in this investment policy. The Fund normally invests in companies that the sub-adviser (“Sub-Adviser”) believes have above average prospects for growth. For this Fund, the Sub-Adviser defines mid-sized companies as those companies with market capitalizations that fall within the range of companies in the Russell Midcap® Growth Index (“Index”) at the time of purchase. The market capitalization of companies within the Index will change with market conditions. The market capitalization of companies in the Index as of June 30, 2016, ranged from $313.2 million to $28.6 billion. The Fund may also invest in derivative instruments including futures or index futures that have a similar profile to the benchmark of the Fund. The Fund typically uses derivatives for the purpose of maintaining equity market exposure on its cash balance. The Fund may also invest in foreign securities. 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”). In managing the Fund, the Sub-Adviser uses a stock selection process that combines the discipline of quantitative screens with rigorous fundamental security analysis. The quantitative screens focus the fundamental analysis by identifying the stocks of companies with strong business momentum that demonstrate relative price strength, and have a perceived value not reflected in the current price. The objective of the fundamental analysis is to confirm the persistence of the company's revenue and earnings growth and validate the Sub-Adviser’s expectations for earnings estimate revisions, particularly relative to consensus. A determination of reasonable valuation for individual securities is based on the judgment of the Sub-Adviser. 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	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. 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 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: 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. 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. 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. Mid-Capitalization Company: Investments in mid-capitalization companies may involve greater risk than is customarily associated with larger, more established companies due to the greater business risks of a limited operating history, smaller size, limited markets and financial resources, narrow product lines, less management depth, and more reliance on key personnel. Consequently, the securities of mid-capitalization companies may have limited market stability and may be subject to more abrupt or erratic market movements than securities of larger, more established growth companies or the market averages in general. 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. 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. 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. Because Class T shares of the Fund had not commenced operations as of the calendar year ended December 31, 2016, the following bar chart shows the changes in the Fund's Class A shares' performance from year to year, and the table compares the Fund's Class A shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class A shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. However, Class T shares' performance would be different from Class A shares' performance due principally to the higher maximum sales charge paid by Class A shares. 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. 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. 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 Class A shares' performance from year to year, and the table compares the Fund's Class A shares' performance to the performance of a broad-based securities market index/indices for the same period.
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Class T shares of the Fund had not commenced operations as of the calendar year ended December 31, 2016
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: 3rd 2009, 17.62% and Worst quarter: 4th 2008, -23.42% The Fund's Class A shares' year-to-date total return as of March 31, 2017: 8.65%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class A shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. However, Class T shares' performance would be different from Class A shares' performance due principally to the higher maximum sales charge paid by Class A shares.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns % (for the periods ended December 31, 2016)
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 do not reflect deductions for fees, expenses, or taxes.
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	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.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	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.
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	After-tax returns are shown for Class A shares only. After-tax returns for other classes will vary.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	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.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	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. 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.
Voya MidCap Opportunities Fund | Class T
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) as a % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	2.50%
Maximum deferred sales charge as a % of purchase or sales price, whichever is less	rr_MaximumDeferredSalesChargeOverOther	none
Management Fees	rr_ManagementFeesOverAssets	0.84%
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.25%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.34%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.03%)	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	1.31%
1 Yr	rr_ExpenseExampleYear01	$ 380
3 Yrs	rr_ExpenseExampleYear03	661
5 Yrs	rr_ExpenseExampleYear05	963
10 Yrs	rr_ExpenseExampleYear10	1,820
1 Yr	rr_ExpenseExampleNoRedemptionYear01	380
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	661
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	963
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 1,820
Voya MidCap Opportunities Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007	25.32%
2008	rr_AnnualReturn2008	(38.02%)
2009	rr_AnnualReturn2009	40.99%
2010	rr_AnnualReturn2010	29.97%
2011	rr_AnnualReturn2011	(0.88%)
2012	rr_AnnualReturn2012	13.56%
2013	rr_AnnualReturn2013	31.04%
2014	rr_AnnualReturn2014	8.42%
2015	rr_AnnualReturn2015	(0.09%)
2016	rr_AnnualReturn2016	6.83%
Year to Date Return, Label	rr_YearToDateReturnLabel	year-to-date total return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2017
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	8.65%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	17.62%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(23.42%)
1 Yr	rr_AverageAnnualReturnYear01	0.68%
5 Yrs	rr_AverageAnnualReturnYear05	10.17%
10 Yrs	rr_AverageAnnualReturnYear10	8.63%
Since Inception	rr_AverageAnnualReturnSinceInception
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 20, 1998
Voya MidCap Opportunities Fund | After tax on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(0.83%)
5 Yrs	rr_AverageAnnualReturnYear05	8.02%
10 Yrs	rr_AverageAnnualReturnYear10	7.22%
Since Inception	rr_AverageAnnualReturnSinceInception
Voya MidCap Opportunities Fund | After tax on distributions with sale | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	1.65%
5 Yrs	rr_AverageAnnualReturnYear05	7.80%
10 Yrs	rr_AverageAnnualReturnYear10	6.85%
Since Inception	rr_AverageAnnualReturnSinceInception
Voya MidCap Opportunities Fund | Russell Midcap® Growth Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	7.33%	[3]
5 Yrs	rr_AverageAnnualReturnYear05	13.51%	[3]
10 Yrs	rr_AverageAnnualReturnYear10	7.83%	[3]
Since Inception	rr_AverageAnnualReturnSinceInception		[3]
Voya MidCap Opportunities Fund | Russell Midcap® Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	13.80%	[3]
5 Yrs	rr_AverageAnnualReturnYear05	14.72%	[3]
10 Yrs	rr_AverageAnnualReturnYear10	7.86%	[3]
Since Inception	rr_AverageAnnualReturnSinceInception		[3]

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] The adviser is contractually obligated to limit expenses to 1.35% for Class T shares, through October 1, 2018. In addition, the adviser is contractually obligated to further limit expenses to 1.31% for Class T shares through October 1, 2018. 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.

[3] The index returns do not reflect deductions for fees, expenses, or taxes.

XML

Voya Real Estate Fund

Voya Real Estate Fund

INVESTMENT OBJECTIVE

The Fund seeks total return consisting of long-term capital appreciation and current income.

FEES AND EXPENSES OF THE FUND

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 invest at least $250,000 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 34) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 114).

Shareholder Fees
Fees paid directly from your investment

Shareholder Fees	Maximum sales charge (load) as a % of offering price	Maximum deferred sales charge as a % of purchase or sales price, whichever is less
Voya Real Estate Fund | Class T	2.50%	none

Annual Fund Operating Expenses
Expenses you pay each year as a % of the value of your investment

Annual Fund Operating Expenses	Voya Real Estate Fund Class T
Management Fees	0.80%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	0.24%	[1]
Total Annual Fund Operating Expenses	1.29%
Waivers and Reimbursements	none	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	1.29%

Expense Example

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Real Estate Fund | Class T | USD ($)	378	649	940	1,768

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Real Estate Fund | Class T | USD ($)	378	649	940	1,768

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.

Portfolio Turnover

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 37% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

Under normal market conditions, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes) in common and preferred stocks of U.S. real estate investment trusts (“REITs”) and real estate companies. The Fund will provide shareholders with at least 60 days' prior notice of any change in this investment policy. The sub-adviser (“Sub-Adviser”) defines a real estate company as a company that: (i) derives at least 50% of its total revenue or earnings from owning, operating, leasing, developing, managing, brokering and/or selling real estate; or (ii) has at least 50% of its assets invested in real estate. Companies principally engaged in the real estate industry may include REITs, real estate owners, real estate managers, real estate brokers, real estate dealers, and companies with substantial real estate holdings.

The Sub-Adviser may invest in companies with any market capitalization. However, the Sub-Adviser will generally not invest in companies with a market capitalization of less than $100 million at the time of purchase. The Fund may also invest in convertible securities, initial public offerings, and Rule 144A securities.

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”).

The Sub-Adviser focuses on investments that generally provide income and also have the potential for long-term capital appreciation. The Sub-Adviser uses systematic, top-down research to evaluate property market conditions and trends to judge which market sectors offer potentially attractive returns. The Sub-Adviser uses proprietary analytical techniques to conduct fundamental company analysis, which provides a framework for security selection. This approach incorporates several quantitative and qualitative factors that aid in evaluating performance characteristics of individual securities independently and relative to each other. The Sub-Adviser's investment approach, with its emphasis on investments in companies primarily engaged in the real estate industry, is expected to produce a total return that is closely tied to the performance of the market for publicly traded real estate companies, including real estate investment trusts, which is a narrow segment of the overall U.S. stock market.

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.

PRINCIPAL RISKS

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.

Concentration: As a result of the Fund “concentrating,” as that term is defined in the 1940 Act, its assets in securities related to a particular industry or group of industries, the Fund may be subject to greater market fluctuations than a fund that is more broadly invested across industries. Financial, economic, business, and other developments affecting issuers in a particular industry or group of industries will have a greater effect on the Fund, and if securities of the particular industry or group of industries as a group fall out of favor, the Fund could underperform, or its net asset value may be more volatile than, funds that have greater industry diversification.

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.

Initial Public Offerings: Investments in initial public offerings (“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.

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. 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.

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 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.

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.

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.

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.

PERFORMANCE INFORMATION

The following information is intended to help you understand the risks of investing in the Fund. Because Class T shares of the Fund had not commenced operations as of the calendar year ended December 31, 2016, the following bar chart shows the changes in the Fund's Class A shares' performance from year to year, and the table compares the Fund's Class A shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class A shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. However, Class T shares' performance would be different from Class A shares' performance due principally to the higher maximum sales charge paid by Class A shares. 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. 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. 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.

Calendar Year Total Returns Class A
(as of December 31 of each year)

Best quarter: 3^rd 2009, 36.02% and Worst quarter: 4^th 2008, -37.53%

The Fund's Class A shares' year-to-date total return as of March 31, 2017: 0.50%

Average Annual Total Returns %
(for the periods ended December 31, 2016)

Average Annual Total Returns - Voya Real Estate Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class A		(2.52%)	8.92%	4.13%		Dec. 20, 2002
Class A | After tax on distributions		(5.12%)	7.08%	2.69%
Class A | After tax on distributions with sale		(1.33%)	6.47%	2.79%
MSCI U.S. REIT® Index	[1]	8.60%	11.86%	4.96%

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. 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.

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] The adviser and sub-adviser are contractually obligated to limit expenses to 1.35% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, extraordinary expenses, and Acquired Fund Fees and Expenses. This limitation is subject to possible recoupment by the adviser and sub-adviser within 36 months of the waiver or reimbursement. Termination or modification of this obligation requires approval by the Fund’s board.

[1] The index returns do not reflect deductions for fees, expenses, or taxes.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Voya EQUITY TRUST
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya Real Estate Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Real Estate Fund
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund seeks total return consisting of long-term capital appreciation and current income.
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 invest at least $250,000 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 34) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 114).
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	October 1, 2018
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 Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 37% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	37.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you invest at least $250,000 in Voya mutual funds.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 250,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Other Expenses are based on estimated amounts for the current fiscal year.
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
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. 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 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.
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 common and preferred stocks of U.S. real estate investment trusts (“REITs”) and real estate companies. The Fund will provide shareholders with at least 60 days' prior notice of any change in this investment policy. The sub-adviser (“Sub-Adviser”) defines a real estate company as a company that: (i) derives at least 50% of its total revenue or earnings from owning, operating, leasing, developing, managing, brokering and/or selling real estate; or (ii) has at least 50% of its assets invested in real estate. Companies principally engaged in the real estate industry may include REITs, real estate owners, real estate managers, real estate brokers, real estate dealers, and companies with substantial real estate holdings. The Sub-Adviser may invest in companies with any market capitalization. However, the Sub-Adviser will generally not invest in companies with a market capitalization of less than $100 million at the time of purchase. The Fund may also invest in convertible securities, initial public offerings, and Rule 144A securities. 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”). The Sub-Adviser focuses on investments that generally provide income and also have the potential for long-term capital appreciation. The Sub-Adviser uses systematic, top-down research to evaluate property market conditions and trends to judge which market sectors offer potentially attractive returns. The Sub-Adviser uses proprietary analytical techniques to conduct fundamental company analysis, which provides a framework for security selection. This approach incorporates several quantitative and qualitative factors that aid in evaluating performance characteristics of individual securities independently and relative to each other. The Sub-Adviser's investment approach, with its emphasis on investments in companies primarily engaged in the real estate industry, is expected to produce a total return that is closely tied to the performance of the market for publicly traded real estate companies, including real estate investment trusts, which is a narrow segment of the overall U.S. stock market. 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.
Strategy Portfolio Concentration [Text]	rr_StrategyPortfolioConcentration	Under normal market conditions, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes) in common and preferred stocks of U.S. real estate investment trusts (“REITs”) and real estate companies.
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. Concentration: As a result of the Fund “concentrating,” as that term is defined in the 1940 Act, its assets in securities related to a particular industry or group of industries, the Fund may be subject to greater market fluctuations than a fund that is more broadly invested across industries. Financial, economic, business, and other developments affecting issuers in a particular industry or group of industries will have a greater effect on the Fund, and if securities of the particular industry or group of industries as a group fall out of favor, the Fund could underperform, or its net asset value may be more volatile than, funds that have greater industry diversification. 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. Initial Public Offerings: Investments in initial public offerings (“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. 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. 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. 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 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. 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. 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. 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. Because Class T shares of the Fund had not commenced operations as of the calendar year ended December 31, 2016, the following bar chart shows the changes in the Fund's Class A shares' performance from year to year, and the table compares the Fund's Class A shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class A shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. However, Class T shares' performance would be different from Class A shares' performance due principally to the higher maximum sales charge paid by Class A shares. 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. 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. 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 Class A shares' performance from year to year, and the table compares the Fund's Class A shares' performance to the performance of a broad-based securities market index/indices for the same period.
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Class T shares of the Fund had not commenced operations as of the calendar year ended December 31, 2016
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: 3rd 2009, 36.02% and Worst quarter: 4th 2008, -37.53% The Fund's Class A shares' year-to-date total return as of March 31, 2017: 0.50%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class A shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. However, Class T shares' performance would be different from Class A shares' performance due principally to the higher maximum sales charge paid by Class A shares.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns % (for the periods ended December 31, 2016)
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 do not reflect deductions for fees, expenses, or taxes.
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	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.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	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.
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	After-tax returns are shown for Class A shares only. After-tax returns for other classes will vary.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	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.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	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. 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.
Voya Real Estate Fund | Class T
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) as a % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	2.50%
Maximum deferred sales charge as a % of purchase or sales price, whichever is less	rr_MaximumDeferredSalesChargeOverOther	none
Management Fees	rr_ManagementFeesOverAssets	0.80%
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.24%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.29%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	none	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	1.29%
1 Yr	rr_ExpenseExampleYear01	$ 378
3 Yrs	rr_ExpenseExampleYear03	649
5 Yrs	rr_ExpenseExampleYear05	940
10 Yrs	rr_ExpenseExampleYear10	1,768
1 Yr	rr_ExpenseExampleNoRedemptionYear01	378
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	649
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	940
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 1,768
Voya Real Estate Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007	(16.52%)
2008	rr_AnnualReturn2008	(35.15%)
2009	rr_AnnualReturn2009	29.62%
2010	rr_AnnualReturn2010	27.43%
2011	rr_AnnualReturn2011	9.31%
2012	rr_AnnualReturn2012	15.31%
2013	rr_AnnualReturn2013	1.77%
2014	rr_AnnualReturn2014	30.16%
2015	rr_AnnualReturn2015	3.00%
2016	rr_AnnualReturn2016	3.44%
Year to Date Return, Label	rr_YearToDateReturnLabel	year-to-date total return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2017
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	0.50%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	36.02%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(37.53%)
1 Yr	rr_AverageAnnualReturnYear01	(2.52%)
5 Yrs	rr_AverageAnnualReturnYear05	8.92%
10 Yrs	rr_AverageAnnualReturnYear10	4.13%
Since Inception	rr_AverageAnnualReturnSinceInception
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 2002
Voya Real Estate Fund | After tax on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(5.12%)
5 Yrs	rr_AverageAnnualReturnYear05	7.08%
10 Yrs	rr_AverageAnnualReturnYear10	2.69%
Since Inception	rr_AverageAnnualReturnSinceInception
Voya Real Estate Fund | After tax on distributions with sale | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(1.33%)
5 Yrs	rr_AverageAnnualReturnYear05	6.47%
10 Yrs	rr_AverageAnnualReturnYear10	2.79%
Since Inception	rr_AverageAnnualReturnSinceInception
Voya Real Estate Fund | MSCI U.S. REIT® Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	8.60%	[3]
5 Yrs	rr_AverageAnnualReturnYear05	11.86%	[3]
10 Yrs	rr_AverageAnnualReturnYear10	4.96%	[3]
Since Inception	rr_AverageAnnualReturnSinceInception		[3]

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] The adviser and sub-adviser are contractually obligated to limit expenses to 1.35% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, extraordinary expenses, and Acquired Fund Fees and Expenses. This limitation is subject to possible recoupment by the adviser and sub-adviser within 36 months of the waiver or reimbursement. Termination or modification of this obligation requires approval by the Fund’s board.

[3] The index returns do not reflect deductions for fees, expenses, or taxes.

XML

Voya SmallCap Opportunities Fund

Voya SmallCap Opportunities Fund

INVESTMENT OBJECTIVE

The Fund seeks capital appreciation.

FEES AND EXPENSES OF THE FUND

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 invest at least $250,000 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 34) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 114).

Shareholder Fees
Fees paid directly from your investment

Shareholder Fees	Maximum sales charge (load) as a % of offering price	Maximum deferred sales charge as a % of purchase or sales price, whichever is less
Voya SmallCap Opportunities Fund | Class T	2.50%	none

Annual Fund Operating Expenses
Expenses you pay each year as a % of the value of your investment

Annual Fund Operating Expenses	Voya SmallCap Opportunities Fund Class T
Management Fees	0.92%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	0.24%	[1]
Acquired Fund Fees and Expenses	0.01%
Total Annual Fund Operating Expenses	1.42%	[2]
Waivers and Reimbursements	none	[3]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	1.42%

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example

Expense Example	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya SmallCap Opportunities Fund | Class T | USD ($)	391	688	1,007	1,909

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya SmallCap Opportunities Fund | Class T | USD ($)	391	688	1,007	1,909

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.

Portfolio Turnover

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 65% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

Under normal market conditions, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes) in common stocks of smaller, lesser-known U.S. companies. The Fund will provide shareholders with at least 60 days' prior notice of any change in this investment policy.

The Fund normally invests in companies that the sub-adviser (“Sub-Adviser”) believes have above average prospects for growth. For this Fund, the Sub-Adviser defines smaller companies as those with market capitalizations that fall within the range of companies within the Russell 2000^® Growth Index (“Index”) at the time of purchase. The market capitalization of companies in the Index will change with market conditions. The market capitalization of companies in the Index as of June 30, 2016, ranged from $1.6 million to $4.1 billion.

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”).

The Sub-Adviser uses a disciplined combination of quantitative screens and bottom-up fundamental security analysis to build a broadly diversified portfolio of companies that the Sub-Adviser believes will have improving bottom lines with reasonable valuation, and whose stocks demonstrate relative strength. The focus of company analysis is upon the prospects for continuing bottom-line growth, balance sheet strength, and cash flow characteristics. A determination of reasonable valuation for individual securities is based on the judgment of the Sub-Adviser.

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.

PRINCIPAL RISKS

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.

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.

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.

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.

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.

Small-Capitalization Company: Investments in small-capitalization companies may involve greater risk than is customarily associated with larger, more established companies due to the greater business risks of a limited operating history, small size, limited markets and financial resources, narrow product lines, less management depth and more reliance on key personnel. The securities of smaller companies are subject to liquidity risk as they are often traded over-the-counter and may not be traded in volume typical on a national securities exchange.

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.

PERFORMANCE INFORMATION

The following information is intended to help you understand the risks of investing in the Fund. Because Class T shares of the Fund had not commenced operations as of the calendar year ended December 31, 2016, the following bar chart shows the changes in the Fund's Class A shares' performance from year to year, and the table compares the Fund's Class A shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class A shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. However, Class T shares' performance would be different from Class A shares' performance due principally to the higher maximum sales charge paid by Class A shares. 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. 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. 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.

Calendar Year Total Returns Class A
(as of December 31 of each year)

Best quarter: 2^nd 2009, 23.05% and Worst quarter: 4^th 2008, -25.37%

The Fund's Class A shares' year-to-date total return as of March 31, 2017: 6.21%

Average Annual Total Returns %
(for the periods ended December 31, 2016)

Average Annual Total Returns - Voya SmallCap Opportunities Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class A		5.94%	11.54%	7.98%		Jun. 05, 1995
Class A | After tax on distributions		5.27%	10.12%	7.29%
Class A | After tax on distributions with sale		3.93%	8.98%	6.74%
Russell 2000® Growth Index	[1]	11.32%	13.74%	7.76%
Russell 2000® Index	[1]	21.31%	14.46%	7.07%

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. 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.

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] Total Annual Fund Operating Expenses may be higher than the Fund's ratio of expenses to average net assets shown in the Fund's Financial Highlights, which reflect the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[3] The adviser is contractually obligated to limit expenses to 1.50% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, extraordinary expenses, and Acquired Fund Fees and Expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. Termination or modification of this obligation requires approval by the Fund’s board.

[1] The index returns do not reflect deductions for fees, expenses, or taxes.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Voya EQUITY TRUST
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya SmallCap Opportunities Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya SmallCap Opportunities Fund
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund seeks 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 invest at least $250,000 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 34) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 114).
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	October 1, 2018
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 Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 65% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	65.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you invest at least $250,000 in Voya mutual funds.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 250,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Other Expenses are based on estimated amounts for the current fiscal year.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	Total Annual Fund Operating Expenses may be higher than the Fund's ratio of expenses to average net assets shown in the Fund's Financial Highlights, which reflect the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
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. 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 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.
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 common stocks of smaller, lesser-known U.S. companies. The Fund will provide shareholders with at least 60 days' prior notice of any change in this investment policy. The Fund normally invests in companies that the sub-adviser (“Sub-Adviser”) believes have above average prospects for growth. For this Fund, the Sub-Adviser defines smaller companies as those with market capitalizations that fall within the range of companies within the Russell 2000® Growth Index (“Index”) at the time of purchase. The market capitalization of companies in the Index will change with market conditions. The market capitalization of companies in the Index as of June 30, 2016, ranged from $1.6 million to $4.1 billion. 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”). The Sub-Adviser uses a disciplined combination of quantitative screens and bottom-up fundamental security analysis to build a broadly diversified portfolio of companies that the Sub-Adviser believes will have improving bottom lines with reasonable valuation, and whose stocks demonstrate relative strength. The focus of company analysis is upon the prospects for continuing bottom-line growth, balance sheet strength, and cash flow characteristics. A determination of reasonable valuation for individual securities is based on the judgment of the Sub-Adviser. 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	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. 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. 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. 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. 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. Small-Capitalization Company: Investments in small-capitalization companies may involve greater risk than is customarily associated with larger, more established companies due to the greater business risks of a limited operating history, small size, limited markets and financial resources, narrow product lines, less management depth and more reliance on key personnel. The securities of smaller companies are subject to liquidity risk as they are often traded over-the-counter and may not be traded in volume typical on a national securities exchange. 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. Because Class T shares of the Fund had not commenced operations as of the calendar year ended December 31, 2016, the following bar chart shows the changes in the Fund's Class A shares' performance from year to year, and the table compares the Fund's Class A shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class A shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. However, Class T shares' performance would be different from Class A shares' performance due principally to the higher maximum sales charge paid by Class A shares. 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. 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. 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 Class A shares' performance from year to year, and the table compares the Fund's Class A shares' performance to the performance of a broad-based securities market index/indices for the same period.
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Class T shares of the Fund had not commenced operations as of the calendar year ended December 31, 2016
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: 2nd 2009, 23.05% and Worst quarter: 4th 2008, -25.37% The Fund's Class A shares' year-to-date total return as of March 31, 2017: 6.21%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class A shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. However, Class T shares' performance would be different from Class A shares' performance due principally to the higher maximum sales charge paid by Class A shares.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns % (for the periods ended December 31, 2016)
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 do not reflect deductions for fees, expenses, or taxes.
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	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.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	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.
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	After-tax returns are shown for Class A shares only. After-tax returns for other classes will vary.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	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.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	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. 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.
Voya SmallCap Opportunities Fund | Class T
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) as a % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	2.50%
Maximum deferred sales charge as a % of purchase or sales price, whichever is less	rr_MaximumDeferredSalesChargeOverOther	none
Management Fees	rr_ManagementFeesOverAssets	0.92%
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.24%	[1]
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.42%	[2]
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	none	[3]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	1.42%
1 Yr	rr_ExpenseExampleYear01	$ 391
3 Yrs	rr_ExpenseExampleYear03	688
5 Yrs	rr_ExpenseExampleYear05	1,007
10 Yrs	rr_ExpenseExampleYear10	1,909
1 Yr	rr_ExpenseExampleNoRedemptionYear01	391
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	688
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	1,007
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 1,909
Voya SmallCap Opportunities Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007	9.32%
2008	rr_AnnualReturn2008	(34.75%)
2009	rr_AnnualReturn2009	31.00%
2010	rr_AnnualReturn2010	33.22%
2011	rr_AnnualReturn2011	0.26%
2012	rr_AnnualReturn2012	14.81%
2013	rr_AnnualReturn2013	37.45%
2014	rr_AnnualReturn2014	4.91%
2015	rr_AnnualReturn2015	(1.55%)
2016	rr_AnnualReturn2016	12.39%
Year to Date Return, Label	rr_YearToDateReturnLabel	year-to-date total return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2017
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	6.21%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	23.05%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(25.37%)
1 Yr	rr_AverageAnnualReturnYear01	5.94%
5 Yrs	rr_AverageAnnualReturnYear05	11.54%
10 Yrs	rr_AverageAnnualReturnYear10	7.98%
Since Inception	rr_AverageAnnualReturnSinceInception
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 05, 1995
Voya SmallCap Opportunities Fund | After tax on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	5.27%
5 Yrs	rr_AverageAnnualReturnYear05	10.12%
10 Yrs	rr_AverageAnnualReturnYear10	7.29%
Since Inception	rr_AverageAnnualReturnSinceInception
Voya SmallCap Opportunities Fund | After tax on distributions with sale | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	3.93%
5 Yrs	rr_AverageAnnualReturnYear05	8.98%
10 Yrs	rr_AverageAnnualReturnYear10	6.74%
Since Inception	rr_AverageAnnualReturnSinceInception
Voya SmallCap Opportunities Fund | Russell 2000® Growth Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	11.32%	[4]
5 Yrs	rr_AverageAnnualReturnYear05	13.74%	[4]
10 Yrs	rr_AverageAnnualReturnYear10	7.76%	[4]
Since Inception	rr_AverageAnnualReturnSinceInception		[4]
Voya SmallCap Opportunities Fund | Russell 2000® Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	21.31%	[4]
5 Yrs	rr_AverageAnnualReturnYear05	14.46%	[4]
10 Yrs	rr_AverageAnnualReturnYear10	7.07%	[4]
Since Inception	rr_AverageAnnualReturnSinceInception		[4]

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] Total Annual Fund Operating Expenses may be higher than the Fund's ratio of expenses to average net assets shown in the Fund's Financial Highlights, which reflect the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[3] The adviser is contractually obligated to limit expenses to 1.50% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, extraordinary expenses, and Acquired Fund Fees and Expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. Termination or modification of this obligation requires approval by the Fund’s board.

[4] The index returns do not reflect deductions for fees, expenses, or taxes.

XML

Voya SMID Cap Growth Fund

Voya SMID Cap Growth Fund

INVESTMENT OBJECTIVE

The Fund seeks long-term capital growth.

FEES AND EXPENSES OF THE FUND

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 invest at least $250,000 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 20) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 96).

Shareholder Fees
Fees paid directly from your investment

Shareholder Fees	Maximum sales charge (load) as a % of offering price	Maximum deferred sales charge as a % of purchase or sales price, whichever is less
Voya SMID Cap Growth Fund | Class T	2.50%	none

Annual Fund Operating Expenses
Expenses you pay each year as a % of the value of your investment

Annual Fund Operating Expenses	Voya SMID Cap Growth Fund Class T
Management Fees	0.85%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	3.09%	[1]
Total Annual Fund Operating Expenses	4.19%
Waivers and Reimbursements	(2.99%)	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	1.20%

Expense Example

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Yr	3 Yrs
Voya SMID Cap Growth Fund | Class T | USD ($)	369	1,120

Expense Example, No Redemption	1 Yr	3 Yrs
Voya SMID Cap Growth Fund | Class T | USD ($)	369	1,120

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-year period.

Portfolio Turnover

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.

Since the Fund had not commenced operations as of May 31, 2016, there is no annual portfolio turnover rate information included.

PRINCIPAL INVESTMENT STRATEGIES

Under normal market conditions, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes) in equity securities of small- and mid-capitalization companies. The Fund will provide shareholders with at least 60 days’ prior notice of any change in this investment policy.

The Fund normally invests in the equity securities of companies that the sub-adviser (“Sub-Adviser”) believes have above average prospects for growth. For this Fund, the Sub-Adviser defines small- and mid-capitalization companies as those with market capitalizations that fall within the range of companies in the Russell 2500^TM Growth Index (“Index”) at the time of purchase. The market capitalization of companies in the Index will change with market conditions. The market capitalization of companies in the Index as of September 30, 2016, ranged from $23.7 million to $19.1 billion.

The Fund may invest in foreign securities and the Fund may also invest in real estate-related securities, including real estate investment trusts.

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”).

The Sub-Adviser uses a disciplined combination of quantitative screens and bottom-up fundamental security analysis to build a broadly diversified portfolio of securities issued by companies that the Sub-Adviser believes will have improving bottom lines with reasonable valuation, and whose securities demonstrate relative strength. The security analysis focuses on the prospects for continued bottom-line growth, balance sheet strength, and cash flow characteristics. A determination of reasonable valuation for individual securities is based on the judgment of the Sub-Adviser.

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.

PRINCIPAL RISKS

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.

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.

Foreign Investments: 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.

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.

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.

Mid-Capitalization Company: Investments in mid-capitalization companies may involve greater risk than is customarily associated with larger, more established companies due to the greater business risks of a limited operating history, smaller size, limited markets and financial resources, narrow product lines, less management depth, and more reliance on key personnel. Consequently, the securities of mid-capitalization companies may have limited market stability and may be subject to more abrupt or erratic market movements than securities of larger, more established growth companies or the market averages in general.

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.

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.

Small-Capitalization Company: Investments in small-capitalization companies may involve greater risk than is customarily associated with larger, more established companies due to the greater business risks of a limited operating history, small size, limited markets and financial resources, narrow product lines, less management depth and more reliance on key personnel. The securities of smaller companies are subject to liquidity risk as they are often traded over-the-counter and may not be traded in volume typical on a national securities exchange.

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.

PERFORMANCE INFORMATION

Because the Fund did not have a full calendar year of operations as of December 31, 2016, there is no annual performance information included.

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] The adviser is contractually obligated to limit expenses to 1.20% for Class T shares, through October 1, 2018. 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. Termination or modification of these obligations requires approval by the Fund’s board.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Voya EQUITY TRUST
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya SMID Cap Growth Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya SMID Cap Growth Fund
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund seeks long-term capital growth.
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 invest at least $250,000 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 20) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 96).
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	October 1, 2018
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 Example, affect the Fund's performance. Since the Fund had not commenced operations as of May 31, 2016, there is no annual portfolio turnover rate information included.
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you invest at least $250,000 in Voya mutual funds.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 250,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Other Expenses are based on estimated amounts for the current fiscal year.
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
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. 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 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-year period.
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 small- and mid-capitalization companies. The Fund will provide shareholders with at least 60 days’ prior notice of any change in this investment policy. The Fund normally invests in the equity securities of companies that the sub-adviser (“Sub-Adviser”) believes have above average prospects for growth. For this Fund, the Sub-Adviser defines small- and mid-capitalization companies as those with market capitalizations that fall within the range of companies in the Russell 2500TM Growth Index (“Index”) at the time of purchase. The market capitalization of companies in the Index will change with market conditions. The market capitalization of companies in the Index as of September 30, 2016, ranged from $23.7 million to $19.1 billion. The Fund may invest in foreign securities and the Fund may also invest in real estate-related securities, including real estate investment trusts. 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”). The Sub-Adviser uses a disciplined combination of quantitative screens and bottom-up fundamental security analysis to build a broadly diversified portfolio of securities issued by companies that the Sub-Adviser believes will have improving bottom lines with reasonable valuation, and whose securities demonstrate relative strength. The security analysis focuses on the prospects for continued bottom-line growth, balance sheet strength, and cash flow characteristics. A determination of reasonable valuation for individual securities is based on the judgment of the Sub-Adviser. 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	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. 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. Foreign Investments: 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. 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. 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. Mid-Capitalization Company: Investments in mid-capitalization companies may involve greater risk than is customarily associated with larger, more established companies due to the greater business risks of a limited operating history, smaller size, limited markets and financial resources, narrow product lines, less management depth, and more reliance on key personnel. Consequently, the securities of mid-capitalization companies may have limited market stability and may be subject to more abrupt or erratic market movements than securities of larger, more established growth companies or the market averages in general. 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. 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. Small-Capitalization Company: Investments in small-capitalization companies may involve greater risk than is customarily associated with larger, more established companies due to the greater business risks of a limited operating history, small size, limited markets and financial resources, narrow product lines, less management depth and more reliance on key personnel. The securities of smaller companies are subject to liquidity risk as they are often traded over-the-counter and may not be traded in volume typical on a national securities exchange. 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	Because the Fund did not have a full calendar year of operations as of December 31, 2016, there is no annual performance information included.
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	the Fund did not have a full calendar year of operations as of December 31, 2016
Voya SMID Cap Growth Fund | Class T
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) as a % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	2.50%
Maximum deferred sales charge as a % of purchase or sales price, whichever is less	rr_MaximumDeferredSalesChargeOverOther	none
Management Fees	rr_ManagementFeesOverAssets	0.85%
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	3.09%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	4.19%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(2.99%)	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	1.20%
1 Yr	rr_ExpenseExampleYear01	$ 369
3 Yrs	rr_ExpenseExampleYear03	1,120
1 Yr	rr_ExpenseExampleNoRedemptionYear01	369
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	$ 1,120

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] The adviser is contractually obligated to limit expenses to 1.20% for Class T shares, through October 1, 2018. 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. Termination or modification of these obligations requires approval by the Fund’s board.

XML

Voya U.S. High Dividend Low Volatility Fund

Voya U.S. High Dividend Low Volatility Fund

INVESTMENT OBJECTIVE

The Fund seeks to maximize total return.

FEES AND EXPENSES OF THE FUND

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 invest at least $250,000 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 20) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 96).

Shareholder Fees
Fees paid directly from your investment

Shareholder Fees	Maximum sales charge (load) as a % of offering price	Maximum deferred sales charge as a % of purchase or sales price, whichever is less
Voya U.S. High Dividend Low Volatility Fund | Class T	2.50%	none

Annual Fund Operating Expenses
Expenses you pay each year as a % of the value of your investment

Annual Fund Operating Expenses	Voya U.S. High Dividend Low Volatility Fund Class T
Management Fees	0.45%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	1.97%	[1]
Total Annual Fund Operating Expenses	2.67%
Waivers and Reimbursements	(1.87%)	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	0.80%

Expense Example

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Yr	3 Yrs
Voya U.S. High Dividend Low Volatility Fund | Class T | USD ($)	330	812

Expense Example, No Redemption	1 Yr	3 Yrs
Voya U.S. High Dividend Low Volatility Fund | Class T | USD ($)	330	812

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-year period.

Portfolio Turnover

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.

Since the Fund had not commenced operations as of May 31, 2016, there is no annual portfolio turnover rate information included.

PRINCIPAL INVESTMENT STRATEGIES

The Fund invests primarily in equity securities of issuers included in the Russell 1000^® Index (“Index”).

The sub-adviser (“Sub-Adviser”) seeks to maximize total return to the extent consistent with maintaining lower volatility than the Index. Volatility generally measures how much a fund’s returns have varied over a specified time frame.

The Fund may invest in derivative instruments including, but not limited to, index futures. The Fund typically uses derivatives as a substitute for purchasing securities included in the Index or for the purpose of maintaining equity market exposure on its cash balance.

The Fund may also invest in real estate-related securities, including real estate investment trusts.

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”).

The Sub-Adviser uses an internally developed quantitative computer model to create a target universe of securities with above average dividend yields compared to the Index, which the Sub-Adviser believes exhibit stable and growing dividend yields within each industry sector. The model also seeks to exclude from the target universe securities issued by companies that the Sub-Adviser believes exhibit characteristics that indicate they are at risk of reducing or eliminating the dividends paid on their securities. Once the Sub-Adviser creates this target universe, the Sub-Adviser seeks to identify the most attractive securities within each sector by ranking each security relative to other securities within its sector using proprietary fundamental sector-specific models. The Sub-Adviser then uses optimization techniques to seek to achieve the portfolio’s target dividend yield, manage target beta, determine active weights, and neutralize sector exposures in order to create a portfolio that the Sub-Adviser believes will provide the potential for maximum total return consistent with maintaining lower volatility than the Index. Under certain market conditions, the Fund will likely earn a lower level of total return than it would in the absence of its strategy of maintaining a relatively low level of volatility.

The Sub-Adviser will rebalance the portfolio on a quarterly basis in accordance with its target parameters. The rebalancing techniques may result in higher portfolio turnover compared to a “buy and hold” strategy.

The Fund may lend portfolio securities on a short-term or long-term basis, up to 33 ¹⁄3% of its total assets.

PRINCIPAL RISKS

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.

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.

Dividend: Companies that issue dividend yielding equity securities are not required to continue to pay dividends on such securities. Therefore, there is the possibility that such companies could reduce or eliminate the payment of dividends in the future. As a result, the Fund’s ability to execute its investment strategy may be limited.

Investment Model: A manager’s proprietary model may not adequately allow for existing or unforeseen market factors or the interplay between such factors. Volatility management techniques may not always be successful in reducing volatility, may not protect against market declines, and may limit the the Fund’s participation in market gains, negatively impacting performance even during periods when the market is rising. During sudden or significant market rallies, such underperformance may be significant. Moreover, volatility management strategies may increase portfolio transaction costs, which may increase losses or reduce gains. The Fund’s volatility may not be lower than that of the Index during all market cycles due to market 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 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.

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.

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.

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.

PERFORMANCE INFORMATION

Because the Fund did not have a full calendar year of operations as of December 31, 2016, there is no annual performance information included.

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] The adviser is contractually obligated to limit expenses to 0.80% for Class T shares, through October 1, 2018. The limitations do not extend to interest, taxes, investment-related costs, leverage expenses, extraordinary expenses, and Acquired Fund Fees and Expenses. These limitations are subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. Termination or modification of these obligations requires approval by the Fund’s board.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Voya EQUITY TRUST
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya U.S. High Dividend Low Volatility Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya U.S. High Dividend Low Volatility Fund
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund seeks to maximize total return.
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 invest at least $250,000 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 20) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 96).
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	October 1, 2018
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 Example, affect the Fund's performance. Since the Fund had not commenced operations as of May 31, 2016, there is no annual portfolio turnover rate information included.
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you invest at least $250,000 in Voya mutual funds.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 250,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Other Expenses are based on estimated amounts for the current fiscal year.
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
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. 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 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-year period.
Strategy [Heading]	rr_StrategyHeading	PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund invests primarily in equity securities of issuers included in the Russell 1000® Index (“Index”). The sub-adviser (“Sub-Adviser”) seeks to maximize total return to the extent consistent with maintaining lower volatility than the Index. Volatility generally measures how much a fund’s returns have varied over a specified time frame. The Fund may invest in derivative instruments including, but not limited to, index futures. The Fund typically uses derivatives as a substitute for purchasing securities included in the Index or for the purpose of maintaining equity market exposure on its cash balance. The Fund may also invest in real estate-related securities, including real estate investment trusts. 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”). The Sub-Adviser uses an internally developed quantitative computer model to create a target universe of securities with above average dividend yields compared to the Index, which the Sub-Adviser believes exhibit stable and growing dividend yields within each industry sector. The model also seeks to exclude from the target universe securities issued by companies that the Sub-Adviser believes exhibit characteristics that indicate they are at risk of reducing or eliminating the dividends paid on their securities. Once the Sub-Adviser creates this target universe, the Sub-Adviser seeks to identify the most attractive securities within each sector by ranking each security relative to other securities within its sector using proprietary fundamental sector-specific models. The Sub-Adviser then uses optimization techniques to seek to achieve the portfolio’s target dividend yield, manage target beta, determine active weights, and neutralize sector exposures in order to create a portfolio that the Sub-Adviser believes will provide the potential for maximum total return consistent with maintaining lower volatility than the Index. Under certain market conditions, the Fund will likely earn a lower level of total return than it would in the absence of its strategy of maintaining a relatively low level of volatility. The Sub-Adviser will rebalance the portfolio on a quarterly basis in accordance with its target parameters. The rebalancing techniques may result in higher portfolio turnover compared to a “buy and hold” strategy. 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	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. 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. Dividend: Companies that issue dividend yielding equity securities are not required to continue to pay dividends on such securities. Therefore, there is the possibility that such companies could reduce or eliminate the payment of dividends in the future. As a result, the Fund’s ability to execute its investment strategy may be limited. Investment Model: A manager’s proprietary model may not adequately allow for existing or unforeseen market factors or the interplay between such factors. Volatility management techniques may not always be successful in reducing volatility, may not protect against market declines, and may limit the the Fund’s participation in market gains, negatively impacting performance even during periods when the market is rising. During sudden or significant market rallies, such underperformance may be significant. Moreover, volatility management strategies may increase portfolio transaction costs, which may increase losses or reduce gains. The Fund’s volatility may not be lower than that of the Index during all market cycles due to market 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 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. 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. 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. 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	Because the Fund did not have a full calendar year of operations as of December 31, 2016, there is no annual performance information included.
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	the Fund did not have a full calendar year of operations as of December 31, 2016
Voya U.S. High Dividend Low Volatility Fund | Class T
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) as a % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	2.50%
Maximum deferred sales charge as a % of purchase or sales price, whichever is less	rr_MaximumDeferredSalesChargeOverOther	none
Management Fees	rr_ManagementFeesOverAssets	0.45%
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	1.97%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.67%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(1.87%)	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	0.80%
1 Yr	rr_ExpenseExampleYear01	$ 330
3 Yrs	rr_ExpenseExampleYear03	812
1 Yr	rr_ExpenseExampleNoRedemptionYear01	330
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	$ 812

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] The adviser is contractually obligated to limit expenses to 0.80% for Class T shares, through October 1, 2018. The limitations do not extend to interest, taxes, investment-related costs, leverage expenses, extraordinary expenses, and Acquired Fund Fees and Expenses. These limitations are subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. Termination or modification of these obligations requires approval by the Fund’s board.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Voya EQUITY TRUST
Prospectus Date	rr_ProspectusDate	May 31, 2017
Document Creation Date	dei_DocumentCreationDate	May 25, 2017