485BPOS

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

Securities Act File No. 333-141111

Investment Company Act File No. 811-22025

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. 69	☒
and/or
Registration Statement Under The Investment Company Act Of 1940	☒
Amendment No. 70 (Check appropriate box or boxes)	☒

VOYA SEPARATE PORTFOLIOS 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, Suite 100 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 with a par value $0.001.

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. 69 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. 69 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 SEPARATE PORTFOLIOS 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.

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EXHIBIT INDEX

Voya Separate Portfolios 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	May 24, 2017
Registrant Name	dei_EntityRegistrantName	Voya Separate Portfolios Trust
Central Index Key	dei_EntityCentralIndexKey	0001392116
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	May 24, 2017
Document Effective Date	dei_DocumentEffectiveDate	May 31, 2017
Prospectus Date	rr_ProspectusDate	May 31, 2017

XML

Voya Target In-Retirement Fund

Voya Target In-Retirement Fund  (formerly, Voya In-Retirement Fund)

INVESTMENT OBJECTIVE

The Fund seeks to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.

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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).

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 Target In-Retirement 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 Target In-Retirement Fund Class T	[1]
Management Fees	0.19%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	8.60%	[2]
Acquired Fund Fees and Expenses	0.43%
Total Annual Fund Operating Expenses	9.47%	[3]
Waivers and Reimbursements	(8.52%)	[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	0.95%

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 Target In-Retirement Fund | Class T | USD ($)	345	2,181	3,857	7,434

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Target In-Retirement Fund | Class T | USD ($)	345	2,181	3,857	7,434

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 44% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire soon or are already retired. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is: 35% in equity securities and 65% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown.

The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities.

The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans.

Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities.

Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities.

The Fund may invest in exchange-traded notes.

The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash.

The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds.

The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.

PRINCIPAL RISKS

You could lose money on an investment in the Fund. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds.

Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes.

Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund.

Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them.

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.

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.

Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation.

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.

Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses.

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.

Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities.

Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets.

Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period.

High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk.

Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate.

Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal.

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.

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.

Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity.

Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject.

Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates.

Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests.

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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I
(as of December 31 of each year)

Best quarter: 4^th 2013, 3.27% and Worst quarter: 3^rd 2015, -2.52%

The Fund's Class I shares' year-to-date total return as of March 31, 2017: 2.67%

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

Average Annual Total Returns - Voya Target In-Retirement Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class I		4.96%			4.67%	Dec. 20, 2012
Class I | After tax on distributions		4.20%			3.38%
Class I | After tax on distributions with sale		2.96%			3.11%
S&P Target Date Retirement Income Index	[1]	5.27%			4.15%

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 I shares only. After-tax returns for other classes will vary.

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. 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 Separate Portfolios Trust
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya Target In-Retirement Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Target In-Retirement Fund  (formerly, Voya In-Retirement Fund)
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund seeks to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.
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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).
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 44% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	44.00%
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 Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information has been restated to reflect current contractual rates.
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	The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire soon or are already retired. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is: 35% in equity securities and 65% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown. The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities. The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans. Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities. Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities. The Fund may invest in exchange-traded notes. The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash. The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds. The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	You could lose money on an investment in the Fund. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds. Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes. Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund. Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them. 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. 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. Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation. 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. Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses. 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. Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities. Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets. Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period. High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk. Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate. Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal. 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. 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. Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity. Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject. Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates. Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests. 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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I shares' performance from year to year, and the table compares the Fund's Class I 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 I (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: 4th 2013, 3.27% and Worst quarter: 3rd 2015, -2.52% The Fund's Class I shares' year-to-date total return as of March 31, 2017: 2.67%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I 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 I shares only. After-tax returns for other classes will vary.
Voya Target In-Retirement 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	0.19%	[1]
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%	[1]
Other Expenses	rr_OtherExpensesOverAssets	8.60%	[1],[2]
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.43%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	9.47%	[1],[3]
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(8.52%)	[1],[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	0.95%	[1]
1 Yr	rr_ExpenseExampleYear01	$ 345
3 Yrs	rr_ExpenseExampleYear03	2,181
5 Yrs	rr_ExpenseExampleYear05	3,857
10 Yrs	rr_ExpenseExampleYear10	7,434
1 Yr	rr_ExpenseExampleNoRedemptionYear01	345
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	2,181
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	3,857
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 7,434
Voya Target In-Retirement Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007
2008	rr_AnnualReturn2008
2009	rr_AnnualReturn2009
2010	rr_AnnualReturn2010
2011	rr_AnnualReturn2011
2012	rr_AnnualReturn2012
2013	rr_AnnualReturn2013	8.06%
2014	rr_AnnualReturn2014	6.10%
2015	rr_AnnualReturn2015	0.01%
2016	rr_AnnualReturn2016	4.96%
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	2.67%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2013
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	3.27%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2015
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(2.52%)
1 Yr	rr_AverageAnnualReturnYear01	4.96%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	4.67%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 2012
Voya Target In-Retirement Fund | After tax on distributions | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	4.20%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	3.38%
Voya Target In-Retirement Fund | After tax on distributions with sale | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	2.96%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	3.11%
Voya Target In-Retirement Fund | S&P Target Date Retirement Income Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	5.27%	[5]
5 Yrs	rr_AverageAnnualReturnYear05		[5]
10 Yrs	rr_AverageAnnualReturnYear10		[5]
Since Inception	rr_AverageAnnualReturnSinceInception	4.15%	[5]

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. Termination or modification of these obligations requires approval by the Fund’s board.

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

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Voya Target Retirement 2020 Fund

Voya Target Retirement 2020 Fund (formerly, Voya Retirement Solution 2020 Fund)

INVESTMENT OBJECTIVE

Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2020. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.

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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).

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 Target Retirement 2020 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 Target Retirement 2020 Fund Class T	[1]
Management Fees	0.19%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	13.86%	[2]
Acquired Fund Fees and Expenses	0.55%
Total Annual Fund Operating Expenses	14.85%	[3]
Waivers and Reimbursements	(13.90%)	[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	0.95%

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 Target Retirement 2020 Fund | Class T | USD ($)	345	3,068	5,281	9,167

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Target Retirement 2020 Fund | Class T | USD ($)	345	3,068	5,281	9,167

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 86% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2020. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 48% in equity securities and 52% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown.

The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities.

The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans.

Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities.

Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities.

The Fund may invest in exchange-traded notes.

The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash.

The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds.

The Fund is structured and managed around a specific target retirement or financial goal date of 2020 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2020, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments.



As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon.

In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date.

The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.

PRINCIPAL RISKS

You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds.

Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes.

Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund.

Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them.

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.

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.

Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation.

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.

Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses.

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.

Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities.

Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets.

Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period.

High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk.

Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate.

Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal.

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.

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.

Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity.

Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject.

Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates.

Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests.

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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I
(as of December 31 of each year)

Best quarter: 1^st 2013, 4.73% and Worst quarter: 3^rd 2015, -4.19%

The Fund's Class I shares' year-to-date total return as of March 31, 2017: 3.65%

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

Average Annual Total Returns - Voya Target Retirement 2020 Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class I		5.86%			6.15%	Dec. 20, 2012
Class I | After tax on distributions		5.35%			4.92%
Class I | After tax on distributions with sale		3.49%			4.42%
S&P Target Date 2020 Index	[1]	7.49%			6.85%

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 I shares only. After-tax returns for other classes will vary.

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. 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 Separate Portfolios Trust
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya Target Retirement 2020 Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Target Retirement 2020 Fund (formerly, Voya Retirement Solution 2020 Fund)
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2020. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.
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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).
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 86% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	86.00%
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 Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information has been restated to reflect current contractual rates.
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	The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2020. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 48% in equity securities and 52% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown. The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities. The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans. Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities. Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities. The Fund may invest in exchange-traded notes. The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash. The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds. The Fund is structured and managed around a specific target retirement or financial goal date of 2020 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2020, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments. As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon. In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date. The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds. Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes. Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund. Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them. 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. 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. Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation. 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. Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses. 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. Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities. Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets. Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period. High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk. Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate. Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal. 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. 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. Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity. Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject. Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates. Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests. 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, even near, at, or after the Target Date.
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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I shares' performance from year to year, and the table compares the Fund's Class I 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 I (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 2013, 4.73% and Worst quarter: 3rd 2015, -4.19% The Fund's Class I shares' year-to-date total return as of March 31, 2017: 3.65%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I 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 I shares only. After-tax returns for other classes will vary.
Voya Target Retirement 2020 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	0.19%	[1]
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%	[1]
Other Expenses	rr_OtherExpensesOverAssets	13.86%	[1],[2]
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.55%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	14.85%	[1],[3]
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(13.90%)	[1],[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	0.95%	[1]
1 Yr	rr_ExpenseExampleYear01	$ 345
3 Yrs	rr_ExpenseExampleYear03	3,068
5 Yrs	rr_ExpenseExampleYear05	5,281
10 Yrs	rr_ExpenseExampleYear10	9,167
1 Yr	rr_ExpenseExampleNoRedemptionYear01	345
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	3,068
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	5,281
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 9,167
Voya Target Retirement 2020 Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007
2008	rr_AnnualReturn2008
2009	rr_AnnualReturn2009
2010	rr_AnnualReturn2010
2011	rr_AnnualReturn2011
2012	rr_AnnualReturn2012
2013	rr_AnnualReturn2013	13.96%
2014	rr_AnnualReturn2014	5.91%
2015	rr_AnnualReturn2015	(0.13%)
2016	rr_AnnualReturn2016	5.86%
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	3.65%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Mar. 31, 2013
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	4.73%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2015
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(4.19%)
1 Yr	rr_AverageAnnualReturnYear01	5.86%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	6.15%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 2012
Voya Target Retirement 2020 Fund | After tax on distributions | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	5.35%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	4.92%
Voya Target Retirement 2020 Fund | After tax on distributions with sale | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	3.49%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	4.42%
Voya Target Retirement 2020 Fund | S&P Target Date 2020 Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	7.49%	[5]
5 Yrs	rr_AverageAnnualReturnYear05		[5]
10 Yrs	rr_AverageAnnualReturnYear10		[5]
Since Inception	rr_AverageAnnualReturnSinceInception	6.85%	[5]

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. Termination or modification of these obligations requires approval by the Fund’s board.

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

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Voya Target Retirement 2025 Fund

Voya Target Retirement 2025 Fund (formerly, Voya Retirement Solution 2025 Fund)

INVESTMENT OBJECTIVE

Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2025. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.

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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).

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 Target Retirement 2025 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 Target Retirement 2025 Fund Class T	[1]
Management Fees	0.17%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	8.69%	[2]
Acquired Fund Fees and Expenses	0.55%
Total Annual Fund Operating Expenses	9.66%	[3]
Waivers and Reimbursements	(8.71%)	[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	0.95%

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 Target Retirement 2025 Fund | Class T | USD ($)	345	2,214	3,914	7,516

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Target Retirement 2025 Fund | Class T | USD ($)	345	2,214	3,914	7,516

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 54% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2025. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 60% in equity securities and 40% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown.

The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities.

The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans.

Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities.

Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities.

The Fund may invest in exchange-traded notes.

The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash.

The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds.

The Fund is structured and managed around a specific target retirement or financial goal date of 2025 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2025, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments.



As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon.

In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date.

The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.

PRINCIPAL RISKS

You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds.

Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes.

Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund.

Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them.

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.

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.

Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation.

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.

Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses.

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.

Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities.

Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets.

Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period.

High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk.

Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate.

Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal.

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.

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.

Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity.

Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject.

Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates.

Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests.

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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I
(as of December 31 of each year)

Best quarter: 4^th 2013, 5.61% and Worst quarter: 3^rd 2015, -5.25%

The Fund's Class I shares' year-to-date total return as of March 31, 2017: 4.45%

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

Average Annual Total Returns - Voya Target Retirement 2025 Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class I		6.25%			6.69%	Dec. 20, 2012
Class I | After tax on distributions		5.58%			5.27%
Class I | After tax on distributions with sale		3.73%			4.74%
S&P Target Date 2025 Index	[1]	8.09%			7.46%

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 I shares only. After-tax returns for other classes will vary.

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. 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 Separate Portfolios Trust
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya Target Retirement 2025 Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Target Retirement 2025 Fund (formerly, Voya Retirement Solution 2025 Fund)
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2025. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.
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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).
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 54% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	54.00%
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 Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information has been restated to reflect current contractual rates.
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	The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2025. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 60% in equity securities and 40% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown. The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities. The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans. Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities. Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities. The Fund may invest in exchange-traded notes. The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash. The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds. The Fund is structured and managed around a specific target retirement or financial goal date of 2025 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2025, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments. As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon. In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date. The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds. Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes. Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund. Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them. 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. 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. Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation. 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. Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses. 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. Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities. Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets. Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period. High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk. Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate. Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal. 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. 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. Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity. Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject. Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates. Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests. 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, even near, at, or after the Target Date.
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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I shares' performance from year to year, and the table compares the Fund's Class I 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 I (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: 4th 2013, 5.61% and Worst quarter: 3rd 2015, -5.25% The Fund's Class I shares' year-to-date total return as of March 31, 2017: 4.45%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I 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 I shares only. After-tax returns for other classes will vary.
Voya Target Retirement 2025 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	0.17%	[1]
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%	[1]
Other Expenses	rr_OtherExpensesOverAssets	8.69%	[1],[2]
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.55%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	9.66%	[1],[3]
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(8.71%)	[1],[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	0.95%	[1]
1 Yr	rr_ExpenseExampleYear01	$ 345
3 Yrs	rr_ExpenseExampleYear03	2,214
5 Yrs	rr_ExpenseExampleYear05	3,914
10 Yrs	rr_ExpenseExampleYear10	7,516
1 Yr	rr_ExpenseExampleNoRedemptionYear01	345
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	2,214
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	3,914
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 7,516
Voya Target Retirement 2025 Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007
2008	rr_AnnualReturn2008
2009	rr_AnnualReturn2009
2010	rr_AnnualReturn2010
2011	rr_AnnualReturn2011
2012	rr_AnnualReturn2012
2013	rr_AnnualReturn2013	16.76%
2014	rr_AnnualReturn2014	5.46%
2015	rr_AnnualReturn2015	(0.42%)
2016	rr_AnnualReturn2016	6.25%
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	4.45%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2013
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	5.61%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2015
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(5.25%)
1 Yr	rr_AverageAnnualReturnYear01	6.25%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	6.69%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 2012
Voya Target Retirement 2025 Fund | After tax on distributions | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	5.58%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	5.27%
Voya Target Retirement 2025 Fund | After tax on distributions with sale | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	3.73%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	4.74%
Voya Target Retirement 2025 Fund | S&P Target Date 2025 Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	8.09%	[5]
5 Yrs	rr_AverageAnnualReturnYear05		[5]
10 Yrs	rr_AverageAnnualReturnYear10		[5]
Since Inception	rr_AverageAnnualReturnSinceInception	7.46%	[5]

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. Termination or modification of these obligations requires approval by the Fund’s board.

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

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Voya Target Retirement 2030 Fund

Voya Target Retirement 2030 Fund  (formerly, Voya Retirement Solution 2030 Fund)

INVESTMENT OBJECTIVE

Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2030. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.

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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).

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 Target Retirement 2030 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 Target Retirement 2030 Fund Class T	[1]
Management Fees	0.19%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	8.66%	[2]
Acquired Fund Fees and Expenses	0.53%
Total Annual Fund Operating Expenses	9.63%	[3]
Waivers and Reimbursements	(8.68%)	[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	0.95%

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 Target Retirement 2030 Fund | Class T | USD ($)	345	2,209	3,905	7,503

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Target Retirement 2030 Fund | Class T | USD ($)	345	2,209	3,905	7,503

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 55% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2030. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 70% in equity securities and 30% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown.

The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities.

The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans.

Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities.

Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities.

The Fund may invest in exchange-traded notes.

The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash.

The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds.

The Fund is structured and managed around a specific target retirement or financial goal date of 2030 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2030, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments.



As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon.

In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date.

The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.

PRINCIPAL RISKS

You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds.

Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes.

Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund.

Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them.

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.

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.

Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation.

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.

Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses.

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.

Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities.

Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets.

Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period.

High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk.

Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate.

Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal.

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.

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.

Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity.

Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject.

Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates.

Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests.

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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I
(as of December 31 of each year)

Best quarter: 4^th 2013, 6.18% and Worst quarter: 3^rd 2015, -6.03%

The Fund's Class I shares' year-to-date total return as of March 31, 2017: 4.88%

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

Average Annual Total Returns - Voya Target Retirement 2030 Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class I		6.81%			7.50%	Dec. 20, 2012
Class I | After tax on distributions		5.99%			5.90%
Class I | After tax on distributions with sale		4.10%			5.35%
S&P Target Date 2030 Index	[1]	8.62%			8.06%

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 I shares only. After-tax returns for other classes will vary.

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. 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 Separate Portfolios Trust
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya Target Retirement 2030 Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Target Retirement 2030 Fund  (formerly, Voya Retirement Solution 2030 Fund)
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2030. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.
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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).
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 55% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	55.00%
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 Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information has been restated to reflect current contractual rates.
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	The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2030. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 70% in equity securities and 30% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown. The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities. The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans. Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities. Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities. The Fund may invest in exchange-traded notes. The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash. The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds. The Fund is structured and managed around a specific target retirement or financial goal date of 2030 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2030, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments. As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon. In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date. The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds. Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes. Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund. Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them. 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. 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. Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation. 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. Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses. 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. Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities. Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets. Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period. High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk. Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate. Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal. 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. 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. Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity. Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject. Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates. Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests. 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, even near, at, or after the Target Date.
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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I shares' performance from year to year, and the table compares the Fund's Class I 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 I (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: 4th 2013, 6.18% and Worst quarter: 3rd 2015, -6.03% The Fund's Class I shares' year-to-date total return as of March 31, 2017: 4.88%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I 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 I shares only. After-tax returns for other classes will vary.
Voya Target Retirement 2030 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	0.19%	[1]
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%	[1]
Other Expenses	rr_OtherExpensesOverAssets	8.66%	[1],[2]
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.53%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	9.63%	[1],[3]
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(8.68%)	[1],[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	0.95%	[1]
1 Yr	rr_ExpenseExampleYear01	$ 345
3 Yrs	rr_ExpenseExampleYear03	2,209
5 Yrs	rr_ExpenseExampleYear05	3,905
10 Yrs	rr_ExpenseExampleYear10	7,503
1 Yr	rr_ExpenseExampleNoRedemptionYear01	345
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	2,209
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	3,905
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 7,503
Voya Target Retirement 2030 Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007
2008	rr_AnnualReturn2008
2009	rr_AnnualReturn2009
2010	rr_AnnualReturn2010
2011	rr_AnnualReturn2011
2012	rr_AnnualReturn2012
2013	rr_AnnualReturn2013	19.32%
2014	rr_AnnualReturn2014	6.11%
2015	rr_AnnualReturn2015	(0.65%)
2016	rr_AnnualReturn2016	6.81%
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	4.88%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2013
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	6.18%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2015
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(6.03%)
1 Yr	rr_AverageAnnualReturnYear01	6.81%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	7.50%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 2012
Voya Target Retirement 2030 Fund | After tax on distributions | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	5.99%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	5.90%
Voya Target Retirement 2030 Fund | After tax on distributions with sale | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	4.10%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	5.35%
Voya Target Retirement 2030 Fund | S&P Target Date 2030 Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	8.62%	[5]
5 Yrs	rr_AverageAnnualReturnYear05		[5]
10 Yrs	rr_AverageAnnualReturnYear10		[5]
Since Inception	rr_AverageAnnualReturnSinceInception	8.06%	[5]

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. Termination or modification of these obligations requires approval by the Fund’s board.

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

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Voya Target Retirement 2035 Fund

Voya Target Retirement 2035 Fund  (formerly, Voya Retirement Solution 2035 Fund)

INVESTMENT OBJECTIVE

Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2035. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.

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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).

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 Target Retirement 2035 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 Target Retirement 2035 Fund Class T	[1]
Management Fees	0.20%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	8.68%	[2]
Acquired Fund Fees and Expenses	0.55%
Total Annual Fund Operating Expenses	9.68%	[3]
Waivers and Reimbursements	(8.73%)	[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	0.95%

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 Target Retirement 2035 Fund | Class T | USD ($)	345	2,218	3,920	7,525

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Target Retirement 2035 Fund | Class T | USD ($)	345	2,218	3,920	7,525

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 43% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2035. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 79% in equity securities and 21% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown.

The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities.

The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans.

Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities.

Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities.

The Fund may invest in exchange-traded notes.

The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash.

The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds.

The Fund is structured and managed around a specific target retirement or financial goal date of 2035 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2035, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments.



As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon.

In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date.

The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.

PRINCIPAL RISKS

You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds.

Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes.

Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund.

Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them.

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.

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.

Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation.

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.

Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses.

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.

Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities.

Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets.

Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period.

High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk.

Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate.

Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal.

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.

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.

Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity.

Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject.

Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates.

Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests.

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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I
(as of December 31 of each year)

Best quarter: 4^th 2013, 6.62% and Worst quarter: 3^rd 2015, -7.23%

The Fund's Class I shares' year-to-date total return as of March 31, 2017: 5.42%

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

Average Annual Total Returns - Voya Target Retirement 2035 Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class I		7.15%			7.66%	Dec. 20, 2012
Class I | After tax on distributions		6.62%			6.07%
Class I | After tax on distributions with sale		4.31%			5.52%
S&P Target Date 2035 Index	[1]	9.12%			8.56%

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 I shares only. After-tax returns for other classes will vary.

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. 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 Separate Portfolios Trust
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya Target Retirement 2035 Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Target Retirement 2035 Fund  (formerly, Voya Retirement Solution 2035 Fund)
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2035. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.
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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).
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 43% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	43.00%
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 Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information has been restated to reflect current contractual rates.
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	The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2035. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 79% in equity securities and 21% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown. The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities. The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans. Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities. Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities. The Fund may invest in exchange-traded notes. The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash. The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds. The Fund is structured and managed around a specific target retirement or financial goal date of 2035 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2035, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments. As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon. In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date. The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds. Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes. Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund. Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them. 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. 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. Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation. 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. Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses. 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. Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities. Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets. Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period. High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk. Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate. Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal. 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. 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. Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity. Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject. Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates. Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests. 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, even near, at, or after the Target Date.
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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I shares' performance from year to year, and the table compares the Fund's Class I 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 I (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: 4th 2013, 6.62% and Worst quarter: 3rd 2015, -7.23% The Fund's Class I shares' year-to-date total return as of March 31, 2017: 5.42%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I 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 I shares only. After-tax returns for other classes will vary.
Voya Target Retirement 2035 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	0.20%	[1]
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%	[1]
Other Expenses	rr_OtherExpensesOverAssets	8.68%	[1],[2]
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.55%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	9.68%	[1],[3]
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(8.73%)	[1],[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	0.95%	[1]
1 Yr	rr_ExpenseExampleYear01	$ 345
3 Yrs	rr_ExpenseExampleYear03	2,218
5 Yrs	rr_ExpenseExampleYear05	3,920
10 Yrs	rr_ExpenseExampleYear10	7,525
1 Yr	rr_ExpenseExampleNoRedemptionYear01	345
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	2,218
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	3,920
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 7,525
Voya Target Retirement 2035 Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007
2008	rr_AnnualReturn2008
2009	rr_AnnualReturn2009
2010	rr_AnnualReturn2010
2011	rr_AnnualReturn2011
2012	rr_AnnualReturn2012
2013	rr_AnnualReturn2013	20.77%
2014	rr_AnnualReturn2014	5.58%
2015	rr_AnnualReturn2015	(1.04%)
2016	rr_AnnualReturn2016	7.15%
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	5.42%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2013
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	6.62%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2015
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(7.23%)
1 Yr	rr_AverageAnnualReturnYear01	7.15%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	7.66%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 2012
Voya Target Retirement 2035 Fund | After tax on distributions | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	6.62%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	6.07%
Voya Target Retirement 2035 Fund | After tax on distributions with sale | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	4.31%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	5.52%
Voya Target Retirement 2035 Fund | S&P Target Date 2035 Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	9.12%	[5]
5 Yrs	rr_AverageAnnualReturnYear05		[5]
10 Yrs	rr_AverageAnnualReturnYear10		[5]
Since Inception	rr_AverageAnnualReturnSinceInception	8.56%	[5]

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. Termination or modification of these obligations requires approval by the Fund’s board.

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

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Voya Target Retirement 2040 Fund

Voya Target Retirement 2040 Fund  (formerly, Voya Retirement Solution 2040 Fund)

INVESTMENT OBJECTIVE

Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2040. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.

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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).

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 Target Retirement 2040 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 Target Retirement 2040 Fund Class T	[1]
Management Fees	0.20%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	8.66%	[2]
Acquired Fund Fees and Expenses	0.55%
Total Annual Fund Operating Expenses	9.66%	[3]
Waivers and Reimbursements	(8.71%)	[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	0.95%

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 Target Retirement 2040 Fund | Class T | USD ($)	345	2,214	3,914	7,516

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Target Retirement 2040 Fund | Class T | USD ($)	345	2,214	3,914	7,516

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 46% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2040. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 87% in equity securities and 13% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown.

The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities.

The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans.

Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities.

Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities.

The Fund may invest in exchange-traded notes.

The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash.

The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds.

The Fund is structured and managed around a specific target retirement or financial goal date of 2040 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2040, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments.



As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon.

In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date.

The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.

PRINCIPAL RISKS

You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds.

Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes.

Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund.

Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them.

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.

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.

Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation.

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.

Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses.

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.

Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities.

Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets.

Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period.

High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk.

Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate.

Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal.

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.

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.

Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity.

Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject.

Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates.

Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests.

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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I
(as of December 31 of each year)

Best quarter: 4^th 2013, 7.02% and Worst quarter: 3^rd 2015, -7.61%

The Fund's Class I shares' year-to-date total return as of March 31, 2017: 5.73%

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

Average Annual Total Returns - Voya Target Retirement 2040 Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class I		7.46%			8.28%	Dec. 20, 2012
Class I | After tax on distributions		6.77%			6.58%
Class I | After tax on distributions with sale		4.43%			5.99%
S&P Target Date 2040 Index	[1]	9.50%			8.91%

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 I shares only. After-tax returns for other classes will vary.

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. 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 Separate Portfolios Trust
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya Target Retirement 2040 Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Target Retirement 2040 Fund  (formerly, Voya Retirement Solution 2040 Fund)
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2040. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.
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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).
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 46% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	46.00%
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 Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information has been restated to reflect current contractual rates.
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	The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2040. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 87% in equity securities and 13% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown. The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities. The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans. Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities. Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities. The Fund may invest in exchange-traded notes. The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash. The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds. The Fund is structured and managed around a specific target retirement or financial goal date of 2040 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2040, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments. As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon. In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date. The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds. Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes. Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund. Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them. 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. 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. Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation. 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. Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses. 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. Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities. Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets. Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period. High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk. Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate. Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal. 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. 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. Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity. Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject. Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates. Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests. 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, even near, at, or after the Target Date.
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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I shares' performance from year to year, and the table compares the Fund's Class I 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 I (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: 4th 2013, 7.02% and Worst quarter: 3rd 2015, -7.61% The Fund's Class I shares' year-to-date total return as of March 31, 2017: 5.73%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I 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 I shares only. After-tax returns for other classes will vary.
Voya Target Retirement 2040 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	0.20%	[1]
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%	[1]
Other Expenses	rr_OtherExpensesOverAssets	8.66%	[1],[2]
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.55%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	9.66%	[1],[3]
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(8.71%)	[1],[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	0.95%	[1]
1 Yr	rr_ExpenseExampleYear01	$ 345
3 Yrs	rr_ExpenseExampleYear03	2,214
5 Yrs	rr_ExpenseExampleYear05	3,914
10 Yrs	rr_ExpenseExampleYear10	7,516
1 Yr	rr_ExpenseExampleNoRedemptionYear01	345
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	2,214
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	3,914
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 7,516
Voya Target Retirement 2040 Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007
2008	rr_AnnualReturn2008
2009	rr_AnnualReturn2009
2010	rr_AnnualReturn2010
2011	rr_AnnualReturn2011
2012	rr_AnnualReturn2012
2013	rr_AnnualReturn2013	22.74%
2014	rr_AnnualReturn2014	6.08%
2015	rr_AnnualReturn2015	(1.08%)
2016	rr_AnnualReturn2016	7.46%
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	5.73%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2013
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	7.02%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2015
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(7.61%)
1 Yr	rr_AverageAnnualReturnYear01	7.46%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	8.28%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 2012
Voya Target Retirement 2040 Fund | After tax on distributions | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	6.77%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	6.58%
Voya Target Retirement 2040 Fund | After tax on distributions with sale | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	4.43%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	5.99%
Voya Target Retirement 2040 Fund | S&P Target Date 2040 Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	9.50%	[5]
5 Yrs	rr_AverageAnnualReturnYear05		[5]
10 Yrs	rr_AverageAnnualReturnYear10		[5]
Since Inception	rr_AverageAnnualReturnSinceInception	8.91%	[5]

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. Termination or modification of these obligations requires approval by the Fund’s board.

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

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Voya Target Retirement 2045 Fund

Voya Target Retirement 2045 Fund  (formerly, Voya Retirement Solution 2045 Fund)

INVESTMENT OBJECTIVE

Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2045. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.

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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).

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 Target Retirement 2045 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 Target Retirement 2045 Fund Class T	[1]
Management Fees	0.21%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	8.63%	[2]
Acquired Fund Fees and Expenses	0.55%
Total Annual Fund Operating Expenses	9.64%	[3]
Waivers and Reimbursements	(8.69%)	[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	0.95%

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 Target Retirement 2045 Fund | Class T | USD ($)	345	2,211	3,908	7,508

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Target Retirement 2045 Fund | Class T | USD ($)	345	2,211	3,908	7,508

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 35% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2045. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 94% in equity securities and 6% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown.

The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities.

The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans.

Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities.

Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities.

The Fund may invest in exchange-traded notes.

The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash.

The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds.

The Fund is structured and managed around a specific target retirement or financial goal date of 2045 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2045, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments.



As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon.

In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date.

The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.

PRINCIPAL RISKS

You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds.

Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes.

Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund.

Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them.

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.

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.

Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation.

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.

Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses.

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.

Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities.

Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets.

Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period.

High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk.

Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate.

Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal.

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.

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.

Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity.

Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject.

Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates.

Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests.

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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I
(as of December 31 of each year)

Best quarter: 4^th 2013, 7.35% and Worst quarter: 3^rd 2015, -7.81%

The Fund's Class I shares' year-to-date total return as of March 31, 2017: 5.86%

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

Average Annual Total Returns - Voya Target Retirement 2045 Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class I		7.44%			8.49%	Dec. 20, 2012
Class I | After tax on distributions		6.84%			6.82%
Class I | After tax on distributions with sale		4.53%			6.19%
S&P Target Date 2045 Index	[1]	9.81%			9.18%

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 I shares only. After-tax returns for other classes will vary.

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. 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 Separate Portfolios Trust
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya Target Retirement 2045 Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Target Retirement 2045 Fund  (formerly, Voya Retirement Solution 2045 Fund)
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2045. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.
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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).
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 35% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	35.00%
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 Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information has been restated to reflect current contractual rates.
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	The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2045. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 94% in equity securities and 6% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown. The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities. The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans. Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities. Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities. The Fund may invest in exchange-traded notes. The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash. The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds. The Fund is structured and managed around a specific target retirement or financial goal date of 2045 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2045, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments. As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon. In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date. The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds. Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes. Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund. Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them. 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. 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. Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation. 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. Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses. 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. Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities. Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets. Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period. High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk. Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate. Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal. 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. 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. Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity. Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject. Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates. Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests. 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, even near, at, or after the Target Date.
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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I shares' performance from year to year, and the table compares the Fund's Class I 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 I (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: 4th 2013, 7.35% and Worst quarter: 3rd 2015, -7.81% The Fund's Class I shares' year-to-date total return as of March 31, 2017: 5.86%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I 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 I shares only. After-tax returns for other classes will vary.
Voya Target Retirement 2045 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	0.21%	[1]
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%	[1]
Other Expenses	rr_OtherExpensesOverAssets	8.63%	[1],[2]
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.55%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	9.64%	[1],[3]
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(8.69%)	[1],[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	0.95%	[1]
1 Yr	rr_ExpenseExampleYear01	$ 345
3 Yrs	rr_ExpenseExampleYear03	2,211
5 Yrs	rr_ExpenseExampleYear05	3,908
10 Yrs	rr_ExpenseExampleYear10	7,508
1 Yr	rr_ExpenseExampleNoRedemptionYear01	345
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	2,211
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	3,908
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 7,508
Voya Target Retirement 2045 Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007
2008	rr_AnnualReturn2008
2009	rr_AnnualReturn2009
2010	rr_AnnualReturn2010
2011	rr_AnnualReturn2011
2012	rr_AnnualReturn2012
2013	rr_AnnualReturn2013	23.55%
2014	rr_AnnualReturn2014	6.20%
2015	rr_AnnualReturn2015	(1.04%)
2016	rr_AnnualReturn2016	7.44%
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	5.86%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2013
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	7.35%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2015
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(7.81%)
1 Yr	rr_AverageAnnualReturnYear01	7.44%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	8.49%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 2012
Voya Target Retirement 2045 Fund | After tax on distributions | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	6.84%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	6.82%
Voya Target Retirement 2045 Fund | After tax on distributions with sale | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	4.53%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	6.19%
Voya Target Retirement 2045 Fund | S&P Target Date 2045 Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	9.81%	[5]
5 Yrs	rr_AverageAnnualReturnYear05		[5]
10 Yrs	rr_AverageAnnualReturnYear10		[5]
Since Inception	rr_AverageAnnualReturnSinceInception	9.18%	[5]

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. Termination or modification of these obligations requires approval by the Fund’s board.

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

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Voya Target Retirement 2050 Fund

Voya Target Retirement 2050 Fund (formerly, Voya Retirement Solution 2050 Fund)

INVESTMENT OBJECTIVE

Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2050. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.

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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).

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 Target Retirement 2050 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 Target Retirement 2050 Fund Class T	[1]
Management Fees	0.21%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	8.59%	[2]
Acquired Fund Fees and Expenses	0.55%
Total Annual Fund Operating Expenses	9.60%	[3]
Waivers and Reimbursements	(8.65%)	[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	0.95%

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 Target Retirement 2050 Fund | Class T | USD ($)	345	2,204	3,896	7,490

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Target Retirement 2050 Fund | Class T | USD ($)	345	2,204	3,896	7,490

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 34% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2050. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 95% in equity securities and 5% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown.

The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities.

The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans.

Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities.

Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities.

The Fund may invest in exchange-traded notes.

The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash.

The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds.

The Fund is structured and managed around a specific target retirement or financial goal date of 2050 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2050, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments.



As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon.

In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date.

The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.

PRINCIPAL RISKS

You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds.

Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes.

Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund.

Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them.

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.

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.

Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation.

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.

Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses.

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.

Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities.

Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets.

Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period.

High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk.

Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate.

Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal.

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.

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.

Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity.

Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject.

Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates.

Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests.

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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I
(as of December 31 of each year)

Best quarter: 4^th 2013, 7.39% and Worst quarter: 3^rd 2015, -7.82%

The Fund's Class I shares' year-to-date total return as of March 31, 2017: 5.77%

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

Average Annual Total Returns - Voya Target Retirement 2050 Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class I		7.47%			8.49%	Dec. 20, 2012
Class I | After tax on distributions		6.92%			6.84%
Class I | After tax on distributions with sale		4.56%			6.21%
S&P Target Date 2050 Index	[1]	10.01%			9.45%

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 I shares only. After-tax returns for other classes will vary.

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. 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 Separate Portfolios Trust
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya Target Retirement 2050 Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Target Retirement 2050 Fund (formerly, Voya Retirement Solution 2050 Fund)
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2050. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.
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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).
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 34% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	34.00%
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 Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information has been restated to reflect current contractual rates.
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	The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2050. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 95% in equity securities and 5% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown. The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities. The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans. Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities. Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities. The Fund may invest in exchange-traded notes. The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash. The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds. The Fund is structured and managed around a specific target retirement or financial goal date of 2050 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2050, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments. As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon. In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date. The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds. Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes. Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund. Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them. 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. 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. Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation. 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. Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses. 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. Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities. Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets. Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period. High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk. Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate. Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal. 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. 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. Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity. Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject. Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates. Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests. 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, even near, at, or after the Target Date.
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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I shares' performance from year to year, and the table compares the Fund's Class I 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 I (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: 4th 2013, 7.39% and Worst quarter: 3rd 2015, -7.82% The Fund's Class I shares' year-to-date total return as of March 31, 2017: 5.77%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I 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 I shares only. After-tax returns for other classes will vary.
Voya Target Retirement 2050 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	0.21%	[1]
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%	[1]
Other Expenses	rr_OtherExpensesOverAssets	8.59%	[1],[2]
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.55%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	9.60%	[1],[3]
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(8.65%)	[1],[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	0.95%	[1]
1 Yr	rr_ExpenseExampleYear01	$ 345
3 Yrs	rr_ExpenseExampleYear03	2,204
5 Yrs	rr_ExpenseExampleYear05	3,896
10 Yrs	rr_ExpenseExampleYear10	7,490
1 Yr	rr_ExpenseExampleNoRedemptionYear01	345
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	2,204
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	3,896
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 7,490
Voya Target Retirement 2050 Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007
2008	rr_AnnualReturn2008
2009	rr_AnnualReturn2009
2010	rr_AnnualReturn2010
2011	rr_AnnualReturn2011
2012	rr_AnnualReturn2012
2013	rr_AnnualReturn2013	23.60%
2014	rr_AnnualReturn2014	6.13%
2015	rr_AnnualReturn2015	(1.05%)
2016	rr_AnnualReturn2016	7.47%
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	5.77%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2013
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	7.39%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2015
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(7.82%)
1 Yr	rr_AverageAnnualReturnYear01	7.47%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	8.49%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 2012
Voya Target Retirement 2050 Fund | After tax on distributions | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	6.92%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	6.84%
Voya Target Retirement 2050 Fund | After tax on distributions with sale | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	4.56%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	6.21%
Voya Target Retirement 2050 Fund | S&P Target Date 2050 Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	10.01%	[5]
5 Yrs	rr_AverageAnnualReturnYear05		[5]
10 Yrs	rr_AverageAnnualReturnYear10		[5]
Since Inception	rr_AverageAnnualReturnSinceInception	9.45%	[5]

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. Termination or modification of these obligations requires approval by the Fund’s board.

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

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Voya Target Retirement 2055 Fund

Voya Target Retirement 2055 Fund  (formerly, Voya Retirement Solution 2055 Fund)

INVESTMENT OBJECTIVE

Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2055. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.

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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).

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 Target Retirement 2055 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 Target Retirement 2055 Fund Class T	[1]
Management Fees	0.22%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	8.60%	[2]
Acquired Fund Fees and Expenses	0.54%
Total Annual Fund Operating Expenses	9.61%	[3]
Waivers and Reimbursements	(8.66%)	[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	0.95%

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 Target Retirement 2055 Fund | Class T | USD ($)	345	2,205	3,899	7,495

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Target Retirement 2055 Fund | Class T | USD ($)	345	2,205	3,899	7,495

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

The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2055. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 95% in equity securities and 5% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown.

The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities.

The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans.

Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities.

Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities.

The Fund may invest in exchange-traded notes.

The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash.

The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds.

The Fund is structured and managed around a specific target retirement or financial goal date of 2055 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2055, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments.



As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon.

In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date.

The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.

PRINCIPAL RISKS

You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds.

Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes.

Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund.

Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them.

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.

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.

Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation.

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.

Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses.

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.

Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities.

Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets.

Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period.

High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk.

Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate.

Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal.

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.

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.

Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity.

Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject.

Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates.

Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests.

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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I
(as of December 31 of each year)

Best quarter: 4^th 2013, 7.44% and Worst quarter: 3^rd 2015, -7.99%

The Fund's Class I shares' year-to-date total return as of March 31, 2017: 5.93%

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

Average Annual Total Returns - Voya Target Retirement 2055 Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class I		7.37%			8.53%	Dec. 20, 2012
Class I | After tax on distributions		6.90%			6.88%
Class I | After tax on distributions with sale		4.51%			6.24%
S&P Target Date 2055+ Index	[1]	10.21%			9.64%

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 I shares only. After-tax returns for other classes will vary.

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. 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 Separate Portfolios Trust
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya Target Retirement 2055 Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Target Retirement 2055 Fund  (formerly, Voya Retirement Solution 2055 Fund)
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2055. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.
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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).
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.
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information has been restated to reflect current contractual rates.
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	The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2055. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 95% in equity securities and 5% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown. The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities. The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans. Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities. Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities. The Fund may invest in exchange-traded notes. The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash. The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds. The Fund is structured and managed around a specific target retirement or financial goal date of 2055 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2055, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments. As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon. In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date. The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds. Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes. Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund. Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them. 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. 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. Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation. 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. Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses. 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. Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities. Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets. Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period. High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk. Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate. Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal. 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. 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. Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity. Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject. Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates. Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests. 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, even near, at, or after the Target Date.
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 I shares' performance from year to year, and the table compares the Fund's Class I shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I shares' performance from year to year, and the table compares the Fund's Class I 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 I (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: 4th 2013, 7.44% and Worst quarter: 3rd 2015, -7.99% The Fund's Class I shares' year-to-date total return as of March 31, 2017: 5.93%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class I 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 lower than Class I shares' performance because of the lower expenses paid by Class I 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 I 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 I shares only. After-tax returns for other classes will vary.
Voya Target Retirement 2055 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	0.22%	[1]
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%	[1]
Other Expenses	rr_OtherExpensesOverAssets	8.60%	[1],[2]
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.54%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	9.61%	[1],[3]
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(8.66%)	[1],[4]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	0.95%	[1]
1 Yr	rr_ExpenseExampleYear01	$ 345
3 Yrs	rr_ExpenseExampleYear03	2,205
5 Yrs	rr_ExpenseExampleYear05	3,899
10 Yrs	rr_ExpenseExampleYear10	7,495
1 Yr	rr_ExpenseExampleNoRedemptionYear01	345
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	2,205
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	3,899
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 7,495
Voya Target Retirement 2055 Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007
2008	rr_AnnualReturn2008
2009	rr_AnnualReturn2009
2010	rr_AnnualReturn2010
2011	rr_AnnualReturn2011
2012	rr_AnnualReturn2012
2013	rr_AnnualReturn2013	23.66%
2014	rr_AnnualReturn2014	6.25%
2015	rr_AnnualReturn2015	(0.96%)
2016	rr_AnnualReturn2016	7.37%
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	5.93%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2013
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	7.44%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2015
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(7.99%)
1 Yr	rr_AverageAnnualReturnYear01	7.37%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	8.53%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 2012
Voya Target Retirement 2055 Fund | After tax on distributions | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	6.90%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	6.88%
Voya Target Retirement 2055 Fund | After tax on distributions with sale | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	4.51%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	6.24%
Voya Target Retirement 2055 Fund | S&P Target Date 2055+ Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	10.21%	[5]
5 Yrs	rr_AverageAnnualReturnYear05		[5]
10 Yrs	rr_AverageAnnualReturnYear10		[5]
Since Inception	rr_AverageAnnualReturnSinceInception	9.64%	[5]

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

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

[3] 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.

[4] The adviser is contractually obligated to limit expenses to 0.95% for Class T shares, through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. Termination or modification of these obligations requires approval by the Fund’s board.

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

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Voya Target Retirement 2060 Fund

Voya Target Retirement 2060 Fund  (formerly, Voya Retirement Solution 2060 Fund)

INVESTMENT OBJECTIVE

Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2060. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.

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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106).

These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund.

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 Target Retirement 2060 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 Target Retirement 2060 Fund Class T
Management Fees	0.22%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	12.45%	[1]
Acquired Fund Fees and Expenses	0.54%	[2]
Total Annual Fund Operating Expenses	13.46%
Waivers and Reimbursements	(12.51%)	[3]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	0.95%

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 Target Retirement 2060 Fund | Class T | USD ($)	345	2,849	4,948	8,826

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Target Retirement 2060 Fund | Class T | USD ($)	345	2,849	4,948	8,826

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 Examples, affect the Fund's performance.

During the most recent fiscal period, the Fund's portfolio turnover rate was 17% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2060. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 95% in equity securities and 5% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown.

The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities.

The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans.

Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities.

Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities.

The Fund may invest in exchange-traded notes.

The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash.

The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds.

The Fund is structured and managed around a specific target retirement or financial goal date of 2060 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2060, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments.



As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon.

In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date.

The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.

PRINCIPAL RISKS

You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds.

Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes.

Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund.

Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them.

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.

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.

Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation.

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.

Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses.

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.

Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities.

Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets.

Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period.

High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk.

Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate.

Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal.

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.

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.

Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity.

Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject.

Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates.

Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests.

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 A shares' performance from year to year, and the table compares the Fund's A shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and 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 A shares' performance due principally to the higher maximum sales charge paid by 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 2016, 4.50% and Worst quarter: 1^st 2016, -0.10%

The Fund’s Class A shares’ year-to-date total return as of March 31, 2017: 5.91%

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

Average Annual Total Returns - Voya Target Retirement 2060 Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class A		1.08%			1.91%	Dec. 21, 2015
Class A | After tax on distributions		0.74%			1.52%
Class A | After tax on distributions with sale		0.86%			1.41%
S&P Target Date 2055+ Index	[1]	10.21%			10.93%

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 that 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 0.95% for Class T shares through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. 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.

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Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Voya Separate Portfolios Trust
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya Target Retirement 2060 Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Target Retirement 2060 Fund  (formerly, Voya Retirement Solution 2060 Fund)
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Until the day prior to its Target Date (defined below), the Fund seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2060. On the Target Date, the Fund's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.
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 121) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 106). These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund.
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 Examples, affect the Fund's performance. During the most recent fiscal period, the Fund's portfolio turnover rate was 17% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	17.00%
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 that 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	The Fund invests primarily in a combination of Underlying Funds, which are actively managed funds or passively managed funds (index funds). The Underlying Funds may or may not be affiliated with the investment adviser. The Underlying Funds invest in U.S. stocks, international stocks, U.S. bonds, and other debt instruments and the Fund uses an asset allocation strategy designed for investors expecting to retire around the year 2060. The Fund's current approximate target investment allocation (expressed as a percentage of its net assets) (“Target Allocation”) among the Underlying Funds is as follows: 95% in equity securities and 5% in debt instruments. As this is the Target Allocation, the actual allocation of the Fund's assets may deviate from the percentages shown. The Target Allocation is measured with reference to the primary investment strategies of the Underlying Funds; actual exposure to equity securities and debt instruments will vary from the Target Allocation if an Underlying Fund is not substantially invested in accordance with its primary investment strategy. The Fund may periodically deviate from the Target Allocation based on an assessment of the current market conditions or other factors. Generally, the deviations fall within the range of +/- 10% relative to the current Target Allocation. The sub-adviser (“Sub-Adviser”) may determine, in light of market conditions or other factors, to deviate by a wider margin in order to protect the Fund, to achieve its investment objective, or to take advantage of particular opportunities. The Underlying Funds provide exposure to a wide range of traditional asset classes which include stocks, bonds, and cash and non-traditional asset classes (also known as alternative strategies) which include, but are not limited to, real estate, commodities, and floating rate loans. Equity securities in which the Underlying Funds invest include, but are not limited to, domestic and international large-, mid-, and small-capitalization stocks (may be growth oriented, value oriented, or a blend); emerging market securities; domestic and international real estate stocks, including real estate investment trusts; and natural resource/commodity securities. Debt instruments in which the Underlying Funds invest include, but are not limited to, domestic and international (including emerging markets) intermediate, long-term and short-term bonds; high-yield bonds commonly referred to as “junk bonds; ” floating rate loans; and Treasury inflation protected securities. The Fund may invest in exchange-traded notes. The Fund may also invest in derivatives, including futures and swaps (including interest rate swaps, total return swaps, and credit default swaps), to make tactical asset allocations, as a substitute for taking a position in the underlying asset, to seek to minimize risk, and to assist in managing cash. The Fund may invest up to 50% of its total assets in Underlying Funds not affiliated with the investment adviser, including exchange-traded funds. The Fund is structured and managed around a specific target retirement or financial goal date of 2060 (“Target Date”). The Target Date is the approximate year that an investor in the Fund would plan to make withdrawals from the Fund for retirement or other financial goals. The chart below shows the glide path and illustrates how the equity securities and debt instruments allocations will change over time. Generally, the Fund's glide path will transition to the target asset allocation illustrated below on an annual basis and become more conservative as the Fund approaches the Target Date. As the Fund approaches its Target Date in 2060, the Fund's Target Allocation is anticipated to be the same as that of Voya Target In-Retirement Fund, which is equal to approximately 35% equity securities and 65% debt instruments. As the Fund's Target Allocation migrates toward that of Voya Target In-Retirement Fund by the Target Date, it is anticipated that the Fund would be merged with and into the Voya Target In-Retirement Fund. The Voya Target In-Retirement Fund is for those investors who are retired, nearing retirement or in need of making withdrawals from their portfolio soon. In summary, the Fund is designed for an investor who plans to withdraw the value of the investor's investments in the Fund gradually on or after the Target Date. The mix of investments in the Fund's Target Allocation will change over time and seek to reduce investment risk as the Fund approaches its Target Date. The Fund will be rebalanced periodically to return to the Target Allocation. The Target Allocation may be changed at any time by the Sub-Adviser.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	You could lose money on an investment in the Fund, even near, at, or after the Target Date. There is no guarantee that the Fund will provide adequate income at and through your retirement or for any of your financial goals. The value of your investment in the Fund changes with the values of the Underlying Funds and their investments. The Fund is subject to the following principal risks (either directly or through investments in one or more Underlying Funds). Any of these risks, among others, could affect the Fund's or an Underlying Fund's performance or cause the Fund or an Underlying Fund to lose money or to underperform market averages of other funds. Asset Allocation: Investment performance depends on the manager’s skill in allocating assets among Underlying Funds and asset classes based on judgments by the manager. There is a risk that the manager may allocate assets to an Underlying Fund or asset class that underperforms compared to other Underlying Funds or asset classes. Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund. Commodities: Commodity prices can have significant volatility, and exposure to commodities can cause the net asset value of the Fund’s shares to decline or fluctuate in a rapid and unpredictable manner. A liquid secondary market may not exist for certain commodity investments, which may make it difficult for the Fund to sell them at a desirable price or at the price at which it is carrying them. 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. 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. Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation. 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. Deflation: Deflation occurs when prices throughout the economy decline over time - the opposite of inflation. When there is deflation, the principal and income of an inflation-protected bond will decline and could result in losses. 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. Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Fund will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Fund through another financial institution, or the Fund relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Fund may not receive the proceeds from a sale of a floating rate loan for a significant period of time, which may affect the Fund’s ability to repay debt, to fund redemptions, to pay dividends, to pay expenses, or to take advantage of new investment opportunities. Foreign Investments/Developing and Emerging Markets: Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Foreign investment risks may be greater in developing and emerging markets than in developed markets. Growth Investing: Prices of growth stocks are more sensitive to investor perceptions of the issuing company’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth stocks tend to be more volatile than value stocks, and may underperform the market as a whole over any given time period. High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk. Index Strategy: An Underlying Fund that seeks to track the index’s performance and does not use defensive strategies or attempt to reduce its exposure to poor performing securities in the index may underperform the overall market. To the extent an Underlying Fund’s investments track its target index, such Underlying Fund may underperform other funds that invest more broadly. The correlation between an Underlying Fund’s performance and index performance may be affected by an Underlying Fund’s expenses and the timing of purchases and redemptions of an Underlying Fund’s shares. In addition, an Underlying Fund’s actual holdings might not match the index and an Underlying Fund’s effective exposure to index securities at any given time may not precisely correlate. Inflation-Indexed Bonds: If the index measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. In addition, inflation-indexed bonds are subject to the usual risks associated with debt instruments, such as interest rate and credit risk. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal. 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. 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. Natural Resources/Commodity Securities: The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity. Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject. Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates. Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests. 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, even near, at, or after the Target Date.
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 A shares' performance from year to year, and the table compares the Fund's A shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and 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 A shares' performance due principally to the higher maximum sales charge paid by 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 A shares' performance from year to year, and the table compares the Fund's 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 2016, 4.50% and Worst quarter: 1st 2016, -0.10% The Fund’s Class A shares’ year-to-date total return as of March 31, 2017: 5.91%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and 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 A shares' performance due principally to the higher maximum sales charge paid by 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 Target Retirement 2060 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	0.22%
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	12.45%	[1]
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.54%	[2]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	13.46%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(12.51%)	[3]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	0.95%
1 Yr	rr_ExpenseExampleYear01	$ 345
3 Yrs	rr_ExpenseExampleYear03	2,849
5 Yrs	rr_ExpenseExampleYear05	4,948
10 Yrs	rr_ExpenseExampleYear10	8,826
1 Yr	rr_ExpenseExampleNoRedemptionYear01	345
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	2,849
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	4,948
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 8,826
Voya Target Retirement 2060 Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007
2008	rr_AnnualReturn2008
2009	rr_AnnualReturn2009
2010	rr_AnnualReturn2010
2011	rr_AnnualReturn2011
2012	rr_AnnualReturn2012
2013	rr_AnnualReturn2013
2014	rr_AnnualReturn2014
2015	rr_AnnualReturn2015
2016	rr_AnnualReturn2016	7.20%
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	5.91%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2016
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	4.50%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Mar. 31, 2016
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(0.10%)
1 Yr	rr_AverageAnnualReturnYear01	1.08%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	1.91%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 21, 2015
Voya Target Retirement 2060 Fund | After tax on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	0.74%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	1.52%
Voya Target Retirement 2060 Fund | After tax on distributions with sale | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	0.86%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	1.41%
Voya Target Retirement 2060 Fund | S&P Target Date 2055+ Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	10.21%	[4]
5 Yrs	rr_AverageAnnualReturnYear05		[4]
10 Yrs	rr_AverageAnnualReturnYear10		[4]
Since Inception	rr_AverageAnnualReturnSinceInception	10.93%	[4]

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

[2] Total Annual Fund Operating Expenses may be higher that 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 0.95% for Class T shares through October 1, 2018. The limitation does not extend to interest, taxes, investment-related costs, leverage expenses, and extraordinary expenses. This limitation is subject to possible recoupment by the adviser within 36 months of the waiver or reimbursement. The adviser is contractually obligated to waive 0.10% of the management fee through October 1, 2018. Termination or modification of these obligations requires approval by the Fund’s board.

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

XML

Voya Investment Grade Credit Fund

Voya Investment Grade Credit Fund

INVESTMENT OBJECTIVE

The Fund seeks to maximize total return. Total return is a combination of income and 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 20) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 110).

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 Investment Grade Credit 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 Investment Grade Credit Fund Class T
Management Fee	0.50%
Distribution and/or Shareholder Services (12b-1) Fees	0.25%
Other Expenses	1.46%	[1]
Total Annual Fund Operating Expenses	2.21%
Waivers and Reimbursements	(1.31%)	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	0.90%

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 Investment Grade Credit Fund | Class T | USD ($)	340	801	1,288	2,630

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Investment Grade Credit Fund | Class T | USD ($)	340	801	1,288	2,630

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 490% 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 investment-grade fixed-income securities. The Fund will provide shareholders with at least 60 days' prior notice of any change in this investment policy. Investment-grade fixed-income securities are securities rated at least BBB- by S&P Global Ratings, or Baa3 by Moody's Investors Service, Inc., or BBB- by Fitch Ratings, or have an equivalent rating by a Nationally Recognized Statistical Rating Organization (“NRSRO”), or are deemed by the sub-adviser (“Sub-Adviser”) to be of comparable quality if unrated. The Fund may concentrate its portfolio investments in any one industry or group of industries under certain circumstances. Generally, the Fund will not invest in a security if, after the investment, more than 25% of its total assets would be invested in any one industry or group of industries, provided that the Fund may invest between 25% and 35% of its total assets (or such other percentage to the extent permitted under the Investment Company Act of 1940, as amended, and the rules, regulations, and exemptive orders thereunder (“1940 Act”)) in the securities of any one industry group or group of industries, if at the time of investment, that industry or group of industries represents 20% or more of the Fund’s primary benchmark index. The Fund’s primary benchmark index is the Bloomberg Barclays U.S. Corporate Index. As of June 30, 2016, the primary benchmark index was concentrated in the banking industry and the Fund may concentrate in the banking industry.

The securities that the Fund may invest in include, but are not limited to, the following:

• fixed-income securities issued by U.S. and foreign entities that are denominated in U.S. or foreign currencies, including, but not limited to, collateralized debt obligations, collateralized loan obligations, convertible bonds, collateralized mortgage obligations and U.S. and foreign mortgage-backed and asset-backed fixed-income securities;

• debt obligations that are denominated in U.S. or foreign currencies and issued or guaranteed by the U.S. government and foreign governments and their agencies and instrumentalities;

• preferred stocks;

• money market instruments; and

• municipal bonds.

Generally, the Sub-Adviser maintains a dollar-weighted average duration between three and ten years for the Fund. Duration is the most commonly used measure of risk in a fixed-income investment as it incorporates multiple features of the fixed-income instrument (e.g., yield, coupon, maturity, etc.) into one number. Duration is a measure of sensitivity of the price of a fixed-income instrument to a change in interest rates. Duration is a weighted average of the times that interest payments and the final return of principal are received. The weights are the amounts of the payments discounted by the yield-to-maturity of the fixed-income instrument. Duration is expressed as a number of years. The bigger the duration number, the greater the interest-rate risk or reward for the fixed-income instrument prices. For example, the price of a bond with an average duration of five years would be expected to fall approximately 5% if interest rates rose by 1%. Conversely, the price of a bond with an average duration of five years would be expected to rise approximately 5% if interest rates drop by 1%.

The Fund may also invest up to 10% of its assets in high-yield (high risk) debt instruments, commonly referred to as “junk bonds.” High-yield debt instruments are debt securities that, at the time of purchase, are not investment-grade fixed-income securities as defined above. The high-yield bonds purchased by the Fund will be rated at least B- by S&P Global Ratings, or B3 by Moody’s Investors Service, Inc., or B- by Fitch Ratings, have an equivalent rating by an NRSRO, or are determined by the Sub-Adviser to be of comparable quality if unrated.

The Fund may invest in real estate securities including real estate investment trusts.

The Fund may also engage in dollar roll transactions, repurchase agreements and reverse repurchase agreements, options, futures and forward contracts involving securities, securities indices, foreign currencies, interest rates, and swap agreements, including credit default swaps. The Fund typically uses derivatives to reduce exposure to other risks, such as interest rate or currency risk, to substitute for taking a position in the underlying asset, and/or to enhance returns in the Fund.

The Sub-Adviser believes that relationships between the drivers of fixed income returns change over time and that recognizing this is key to managing of fixed income assets. Therefore, the Sub-Adviser employs a dynamic investment process that seeks to balance top-down macro economic considerations and fundamental bottom-up analysis during the steps of its investment process - sector allocation, security selection, duration and yield curve management. This includes leveraging proprietary qualitative analysis along with quantitative tools throughout the portfolio construction process.

The Fund may also invest in other investment companies, including exchange-traded funds, to the extent permitted under the 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 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.

Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund.

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 (Index): To the extent that the Fund’s index “concentrates,” as that term is defined in the 1940 Act, its assets in the securities of a particular industry or group of industries, the Fund will allocate its investments to approximately the same extent as the index. As a result, the Fund may be subject to greater market fluctuation 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 a particular industry or group of industries as a group fall out of favor, the Fund could underperform, or 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.

Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation.

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.

High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk.

Interest Rate: With bonds and other fixed rate debt instruments, a rise in market interest rates generally causes values to fall; conversely, values generally rise as market interest rates fall. The higher the credit quality of the instrument, and the longer its maturity or duration, the more sensitive it is likely to be to interest rate risk. In the case of inverse securities, the interest rate paid by the securities is a floating rate, which generally will decrease when the market rate of interest to which the inverse security is indexed increases and will increase when the market rate of interest to which the inverse security is indexed decreases. As of the date of this Prospectus, market interest rates in the United States are at or near historic lows, which may increase the Fund’s exposure to risks associated with rising market interest rates. Rising market interest rates could have unpredictable effects on the markets and may expose fixed-income and related markets to heightened volatility. For funds that invest in fixed-income securities, an increase in market interest rates may lead to increased redemptions and increased portfolio turnover, which could reduce liquidity for certain investments, adversely affect values, and increase costs. 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.

Mortgage- and/or Asset-Backed Securities: Defaults on, or low credit quality or liquidity of the underlying assets of the asset-backed (including mortgage-backed) securities may impair the value of these securities and result in losses. There may be limitations on the enforceability of any security interest or collateral granted with respect to those underlying assets and the value of collateral may not satisfy the obligation upon default. These securities also present a higher degree of prepayment and extension risk and interest rate risk than do other types of debt instruments.

Municipal Obligations: The municipal securities market is volatile and can be significantly affected by adverse tax, legislative, or political changes and the financial condition of the issuers of municipal securities. Among other risks, investments in municipal securities are subject to the risk that the issuer may delay payment, restructure its debt, or refuse to pay interest or repay principal on its debt.

Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject.

Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates.

Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests.

Repurchase Agreements: In the event that the other party to a repurchase agreement defaults on its obligations, the Fund would generally seek to sell the underlying security serving as collateral for the repurchase agreement. However, the value of collateral may be insufficient to satisfy the counterparty's obligation and/or the Fund may encounter delay and incur costs before being able to sell the security. Such a delay may involve loss of interest or a decline in price of the security, which could result in a loss. In addition, if the Fund is characterized by a court as an unsecured creditor, it would be at risk of losing some or all of the principal and interest involved in the transaction.

Securities Lending: Securities lending involves two primary risks: “investment risk” and “borrower default risk.” When lending securities, the Fund will receive cash or U.S. government securities as collateral. Investment risk is the risk that the Fund will lose money from the investment of the cash collateral received from the borrower. Borrower default risk is the risk that the Fund will lose money due to the failure of a borrower to return a borrowed security. Securities lending may result in leverage. The use of leverage may exaggerate any increase or decrease in the net asset value, causing the Fund to be more volatile. The use of leverage may increase expenses and increase the impact of the Fund’s other risks.

Sovereign Debt: These securities are issued or guaranteed by foreign government entities. Investments in sovereign debt are subject to the risk that a government entity may delay payment, restructure its debt, or refuse to pay interest or repay principal on its sovereign debt. Some of these reasons may include cash flow problems, insufficient foreign currency reserves, political considerations, social changes, the relative size of its debt position to its economy or its failure to put in place economic reforms required by the International Monetary Fund or other multilateral agencies. If a government entity defaults, it may ask for more time in which to pay or for further loans. There is no legal process for collecting sovereign debts that a government does not pay or bankruptcy proceeding by which all or part of sovereign debt that a government entity has not repaid may be collected.

U.S. Government Securities and Obligations: U.S. government securities are obligations of, or guaranteed by, the U.S. government, its agencies or government-sponsored enterprises. U.S. government securities are subject to market and interest rate risk, and may be subject to varying degrees of credit risk.

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 SMA shares' performance from year to year, and the table compares the Fund's Class SMA shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class SMA 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 lower than Class SMA shares' performance because of the lower expenses paid by Class SMA 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 SMA
(as of December 31 of each year)

Best quarter: 2nd 2009, 7.52% and Worst quarter: 3rd 2008, -4.76%

The Fund's Class SMA shares' year-to-date total return as of March 31, 2017: 1.45%

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

Average Annual Total Returns - Voya Investment Grade Credit Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class SMA		7.70%	5.16%		6.23%	Jun. 08, 2007
Class SMA | After tax on distributions		5.80%	3.33%		4.22%
Class SMA | After tax on distributions with sale		4.34%	3.16%		3.56%
Bloomberg Barclays U.S. Corporate Index	[1]	6.11%	4.14%		5.74%

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 SMA 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 0.90% for Class T shares, through August 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 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 Separate Portfolios Trust
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya Investment Grade Credit Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Investment Grade Credit Fund
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund seeks to maximize total return. Total return is a combination of income and 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 20) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 110).
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	August 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 490% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	490.00%
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 investment-grade fixed-income securities. The Fund will provide shareholders with at least 60 days' prior notice of any change in this investment policy. Investment-grade fixed-income securities are securities rated at least BBB- by S&P Global Ratings, or Baa3 by Moody's Investors Service, Inc., or BBB- by Fitch Ratings, or have an equivalent rating by a Nationally Recognized Statistical Rating Organization (“NRSRO”), or are deemed by the sub-adviser (“Sub-Adviser”) to be of comparable quality if unrated. The Fund may concentrate its portfolio investments in any one industry or group of industries under certain circumstances. Generally, the Fund will not invest in a security if, after the investment, more than 25% of its total assets would be invested in any one industry or group of industries, provided that the Fund may invest between 25% and 35% of its total assets (or such other percentage to the extent permitted under the Investment Company Act of 1940, as amended, and the rules, regulations, and exemptive orders thereunder (“1940 Act”)) in the securities of any one industry group or group of industries, if at the time of investment, that industry or group of industries represents 20% or more of the Fund’s primary benchmark index. The Fund’s primary benchmark index is the Bloomberg Barclays U.S. Corporate Index. As of June 30, 2016, the primary benchmark index was concentrated in the banking industry and the Fund may concentrate in the banking industry. The securities that the Fund may invest in include, but are not limited to, the following: fixed-income securities issued by U.S. and foreign entities that are denominated in U.S. or foreign currencies, including, but not limited to, collateralized debt obligations, collateralized loan obligations, convertible bonds, collateralized mortgage obligations and U.S. and foreign mortgage-backed and asset-backed fixed-income securities; debt obligations that are denominated in U.S. or foreign currencies and issued or guaranteed by the U.S. government and foreign governments and their agencies and instrumentalities; preferred stocks; money market instruments; and municipal bonds. Generally, the Sub-Adviser maintains a dollar-weighted average duration between three and ten years for the Fund. Duration is the most commonly used measure of risk in a fixed-income investment as it incorporates multiple features of the fixed-income instrument (e.g., yield, coupon, maturity, etc.) into one number. Duration is a measure of sensitivity of the price of a fixed-income instrument to a change in interest rates. Duration is a weighted average of the times that interest payments and the final return of principal are received. The weights are the amounts of the payments discounted by the yield-to-maturity of the fixed-income instrument. Duration is expressed as a number of years. The bigger the duration number, the greater the interest-rate risk or reward for the fixed-income instrument prices. For example, the price of a bond with an average duration of five years would be expected to fall approximately 5% if interest rates rose by 1%. Conversely, the price of a bond with an average duration of five years would be expected to rise approximately 5% if interest rates drop by 1%. The Fund may also invest up to 10% of its assets in high-yield (high risk) debt instruments, commonly referred to as “junk bonds.” High-yield debt instruments are debt securities that, at the time of purchase, are not investment-grade fixed-income securities as defined above. The high-yield bonds purchased by the Fund will be rated at least B- by S&P Global Ratings, or B3 by Moody’s Investors Service, Inc., or B- by Fitch Ratings, have an equivalent rating by an NRSRO, or are determined by the Sub-Adviser to be of comparable quality if unrated. The Fund may invest in real estate securities including real estate investment trusts. The Fund may also engage in dollar roll transactions, repurchase agreements and reverse repurchase agreements, options, futures and forward contracts involving securities, securities indices, foreign currencies, interest rates, and swap agreements, including credit default swaps. The Fund typically uses derivatives to reduce exposure to other risks, such as interest rate or currency risk, to substitute for taking a position in the underlying asset, and/or to enhance returns in the Fund. The Sub-Adviser believes that relationships between the drivers of fixed income returns change over time and that recognizing this is key to managing of fixed income assets. Therefore, the Sub-Adviser employs a dynamic investment process that seeks to balance top-down macro economic considerations and fundamental bottom-up analysis during the steps of its investment process - sector allocation, security selection, duration and yield curve management. This includes leveraging proprietary qualitative analysis along with quantitative tools throughout the portfolio construction process. The Fund may also invest in other investment companies, including exchange-traded funds, to the extent permitted under the 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 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. Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Fund. 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 (Index): To the extent that the Fund’s index “concentrates,” as that term is defined in the 1940 Act, its assets in the securities of a particular industry or group of industries, the Fund will allocate its investments to approximately the same extent as the index. As a result, the Fund may be subject to greater market fluctuation 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 a particular industry or group of industries as a group fall out of favor, the Fund could underperform, or 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. Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation. 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. High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk. Interest Rate: With bonds and other fixed rate debt instruments, a rise in market interest rates generally causes values to fall; conversely, values generally rise as market interest rates fall. The higher the credit quality of the instrument, and the longer its maturity or duration, the more sensitive it is likely to be to interest rate risk. In the case of inverse securities, the interest rate paid by the securities is a floating rate, which generally will decrease when the market rate of interest to which the inverse security is indexed increases and will increase when the market rate of interest to which the inverse security is indexed decreases. As of the date of this Prospectus, market interest rates in the United States are at or near historic lows, which may increase the Fund’s exposure to risks associated with rising market interest rates. Rising market interest rates could have unpredictable effects on the markets and may expose fixed-income and related markets to heightened volatility. For funds that invest in fixed-income securities, an increase in market interest rates may lead to increased redemptions and increased portfolio turnover, which could reduce liquidity for certain investments, adversely affect values, and increase costs. 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. Mortgage- and/or Asset-Backed Securities: Defaults on, or low credit quality or liquidity of the underlying assets of the asset-backed (including mortgage-backed) securities may impair the value of these securities and result in losses. There may be limitations on the enforceability of any security interest or collateral granted with respect to those underlying assets and the value of collateral may not satisfy the obligation upon default. These securities also present a higher degree of prepayment and extension risk and interest rate risk than do other types of debt instruments. Municipal Obligations: The municipal securities market is volatile and can be significantly affected by adverse tax, legislative, or political changes and the financial condition of the issuers of municipal securities. Among other risks, investments in municipal securities are subject to the risk that the issuer may delay payment, restructure its debt, or refuse to pay interest or repay principal on its debt. Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject. Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates. Real Estate Companies and Real Estate Investment Trusts (“REITs”): Investing in real estate companies and REITs may subject the Fund to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses in addition to terrorist attacks, war, or other acts that destroy real property. Investments in REITs are affected by the management skill and creditworthiness of the REIT. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests. Repurchase Agreements: In the event that the other party to a repurchase agreement defaults on its obligations, the Fund would generally seek to sell the underlying security serving as collateral for the repurchase agreement. However, the value of collateral may be insufficient to satisfy the counterparty's obligation and/or the Fund may encounter delay and incur costs before being able to sell the security. Such a delay may involve loss of interest or a decline in price of the security, which could result in a loss. In addition, if the Fund is characterized by a court as an unsecured creditor, it would be at risk of losing some or all of the principal and interest involved in the transaction. Securities Lending: Securities lending involves two primary risks: “investment risk” and “borrower default risk.” When lending securities, the Fund will receive cash or U.S. government securities as collateral. Investment risk is the risk that the Fund will lose money from the investment of the cash collateral received from the borrower. Borrower default risk is the risk that the Fund will lose money due to the failure of a borrower to return a borrowed security. Securities lending may result in leverage. The use of leverage may exaggerate any increase or decrease in the net asset value, causing the Fund to be more volatile. The use of leverage may increase expenses and increase the impact of the Fund’s other risks. Sovereign Debt: These securities are issued or guaranteed by foreign government entities. Investments in sovereign debt are subject to the risk that a government entity may delay payment, restructure its debt, or refuse to pay interest or repay principal on its sovereign debt. Some of these reasons may include cash flow problems, insufficient foreign currency reserves, political considerations, social changes, the relative size of its debt position to its economy or its failure to put in place economic reforms required by the International Monetary Fund or other multilateral agencies. If a government entity defaults, it may ask for more time in which to pay or for further loans. There is no legal process for collecting sovereign debts that a government does not pay or bankruptcy proceeding by which all or part of sovereign debt that a government entity has not repaid may be collected. U.S. Government Securities and Obligations: U.S. government securities are obligations of, or guaranteed by, the U.S. government, its agencies or government-sponsored enterprises. U.S. government securities are subject to market and interest rate risk, and may be subject to varying degrees of credit risk. 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 SMA shares' performance from year to year, and the table compares the Fund's Class SMA shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class SMA 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 lower than Class SMA shares' performance because of the lower expenses paid by Class SMA 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 SMA shares' performance from year to year, and the table compares the Fund's Class SMA 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 SMA (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, 7.52% and Worst quarter: 3rd 2008, -4.76% The Fund's Class SMA shares' year-to-date total return as of March 31, 2017: 1.45%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class SMA 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 lower than Class SMA shares' performance because of the lower expenses paid by Class SMA 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 SMA 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 SMA shares only. After-tax returns for other classes will vary.
Voya Investment Grade Credit 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 Fee	rr_ManagementFeesOverAssets	0.50%
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	1.46%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.21%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(1.31%)	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	0.90%
1 Yr	rr_ExpenseExampleYear01	$ 340
3 Yrs	rr_ExpenseExampleYear03	801
5 Yrs	rr_ExpenseExampleYear05	1,288
10 Yrs	rr_ExpenseExampleYear10	2,630
1 Yr	rr_ExpenseExampleNoRedemptionYear01	340
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	801
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	1,288
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 2,630
Voya Investment Grade Credit Fund | Class SMA
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007
2008	rr_AnnualReturn2008	(2.06%)
2009	rr_AnnualReturn2009	17.46%
2010	rr_AnnualReturn2010	7.11%
2011	rr_AnnualReturn2011	5.54%
2012	rr_AnnualReturn2012	8.13%
2013	rr_AnnualReturn2013	1.42%
2014	rr_AnnualReturn2014	8.66%
2015	rr_AnnualReturn2015	0.20%
2016	rr_AnnualReturn2016	7.70%
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	1.45%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	7.52%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(4.76%)
1 Yr	rr_AverageAnnualReturnYear01	7.70%
5 Yrs	rr_AverageAnnualReturnYear05	5.16%
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	6.23%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 08, 2007
Voya Investment Grade Credit Fund | After tax on distributions | Class SMA
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	5.80%
5 Yrs	rr_AverageAnnualReturnYear05	3.33%
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	4.22%
Voya Investment Grade Credit Fund | After tax on distributions with sale | Class SMA
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	4.34%
5 Yrs	rr_AverageAnnualReturnYear05	3.16%
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	3.56%
Voya Investment Grade Credit Fund | Bloomberg Barclays U.S. Corporate Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	6.11%	[3]
5 Yrs	rr_AverageAnnualReturnYear05	4.14%	[3]
10 Yrs	rr_AverageAnnualReturnYear10		[3]
Since Inception	rr_AverageAnnualReturnSinceInception	5.74%	[3]

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

[2] The adviser is contractually obligated to limit expenses to 0.90% for Class T shares, through August 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 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 Securitized Credit Fund

Voya Securitized Credit Fund

INVESTMENT OBJECTIVE

The Fund seeks to maximize total return through a combination of current income and 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 18) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 98).

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 Securitized Credit 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 Securitized Credit Fund Class T
Management Fee	0.60%
Distribution and/or Shareholder Services (12b-1) Fee	0.25%
Other Expenses	0.19%	[1]
Total Annual Fund Operating Expenses	1.04%
Waivers and Reimbursements	(0.04%)	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	1.00%

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 Securitized Credit Fund | Class T | USD ($)	349	569	806	1,486

Expense Example, No Redemption	1 Yr	3 Yrs	5 Yrs	10 Yrs
Voya Securitized Credit Fund | Class T | USD ($)	349	569	806	1,486

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 35% 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 securitized credit securities. The Fund will provide shareholders with at least 60 days’ prior written notice of any change in this investment policy.

Securitized credit securities include commercial mortgage-backed securities (“CMBS”), asset-backed securities (“ABS”), agency and non-agency residential mortgage-backed securities (“RMBS”), and collateralized mortgage obligations (“CMOs”). These securities may be fixed rate or adjustable rate securities. Agency MBS are issued or guaranteed by the U.S. government, its agencies or instrumentalities, which include mortgage pass-through securities representing interests in pools of mortgage loans issued or guaranteed by the Government National Mortgage Association (“GNMA”), the Federal National Mortgage Association (“FNMA”), or the Federal Home Loan Mortgage Corporation (“FMLMC”). The Fund may also invest in other fixed-income instruments, which include bonds, debt instruments and other similar instruments issued by various U.S. and non-U.S. public or private sector entities.

The Fund may invest in interest-only (“IO”), principal-only (“PO”), or inverse floating rate debt. The Fund may invest in mortgage dollar rolls and may purchase or sell securities on a when-issued, delayed delivery or forward commitment basis through the “to-be-announced” (“TBA”) market. With TBA transactions, the particular securities to be delivered are not identified at the trade date but the delivered securities must meet specified terms and standards. The Fund may invest a portion of its assets directly in mortgage loans. The Fund may invest in securities of any maturity or duration and the securities may have fixed, floating, or variable rates.

The Fund may invest in mortgage-related high-yield (high risk) instruments rated below investment grade (commonly referred to as “junk bonds”), that at the time of purchase are rated below BBB- by S&P Global Ratings or Baa3 by Moody’s Investors Service, Inc. or are comparably rated by another Nationally Recognized Statistical Rating Organization (“NRSRO”) or, if unrated, determined by the Fund’s sub-adviser (“Sub-Adviser”) to be of comparable quality. The Fund may invest in foreign securities, including securities of issuers located in emerging market countries, which may include non-U.S. dollar denominated foreign mortgage securities.

The Fund may invest in derivative instruments including options, futures contracts, options on futures, fixed-income swap agreements, credit default swap agreements, and currency related derivatives, including currency forwards and currency swaps, subject to applicable law. The Fund typically uses derivatives to seek to reduce exposure or other risks such as interest rate or currency risk, to substitute for taking a position in the underlying asset, and/or to enhance returns in the Fund. The Fund may seek to obtain market exposure to the securities in which it primarily invests by entering into a series of purchase and sale contracts or by using other investment techniques (such as buy backs or dollar rolls and reverse repurchase agreements).

The Fund is non-diversified, which means it may invest a significant portion of its assets in a single issuer.

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 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.

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. Mortgage-backed securities that are not issued by U.S. government agencies may have a greater risk of default because neither the U.S. government nor an agency or instrumentality of the U.S. government has guaranteed them. The credit quality of typical asset- and mortgage-backed securities depends primarily on the credit quality of the underlying assets and the structural support (if any) provided to the securities.

Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation.

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/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.

High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk.

Interest in Loans: The value and the income streams of interests in loans (including participation interests in lease financings and assignments in secured variable or floating rate loans) will decline if borrowers delay payments or fail to pay altogether. A significant rise in market interest rates could increase this risk. Although loans may be fully collateralized when purchased, such collateral may become illiquid or decline in value.

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.

Issuer Non-Diversification: A “non-diversified” investment company is subject to the risks of focusing investments in a small number of issuers, industries or foreign currencies, including being more susceptible to risks associated with a single economic, political or regulatory occurrence than a more diversified portfolio might be.

Liquidity: If a security is illiquid, the Fund might be unable to sell the security at a time when the Fund’s manager might wish to sell, or at all. Further, the lack of an established secondary market may make it more difficult to value illiquid securities, exposing the Fund to the risk that the price at which it sells illiquid securities will be less than the price at which they were valued when held by the Fund. The prices of illiquid securities may be more volatile than more liquid investments. The risks associated with illiquid securities may be greater in times of financial stress. The Fund could lose money if it cannot sell a security at the time and price that would be most beneficial to the Fund.

Mortgage- and/or Asset-Backed Securities: Defaults on, or low credit quality or liquidity of the underlying assets of the asset-backed (including mortgage-backed) securities may impair the value of these securities and result in losses. There may be limitations on the enforceability of any security interest or collateral granted with respect to those underlying assets and the value of collateral may not satisfy the obligation upon default. These securities also present a higher degree of prepayment and extension risk and interest rate risk than do other types of debt instruments.

Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject.

Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates.

Securities Lending: Securities lending involves two primary risks: “investment risk” and “borrower default risk.” When lending securities, the Fund will receive cash or U.S. government securities as collateral. Investment risk is the risk that the Fund will lose money from the investment of the cash collateral received from the borrower. Borrower default risk is the risk that the Fund will lose money due to the failure of a borrower to return a borrowed security. Securities lending may result in leverage. The use of leverage may exaggerate any increase or decrease in the net asset value, causing the Fund to be more volatile. The use of leverage may increase expenses and increase the impact of the Fund’s other risks.

Sovereign Debt: These securities are issued or guaranteed by foreign government entities. Investments in sovereign debt are subject to the risk that a government entity may delay payment, restructure its debt, or refuse to pay interest or repay principal on its sovereign debt. Some of these reasons may include cash flow problems, insufficient foreign currency reserves, political considerations, social changes, the relative size of its debt position to its economy or its failure to put in place economic reforms required by the International Monetary Fund or other multilateral agencies. If a government entity defaults, it may ask for more time in which to pay or for further loans. There is no legal process for collecting sovereign debts that a government does not pay or bankruptcy proceeding by which all or part of sovereign debt that a government entity has not repaid may be collected.

U.S. Government Securities and Obligations: U.S. government securities are obligations of, or guaranteed by, the U.S. government, its agencies or government-sponsored enterprises. U.S. government securities are subject to market and interest rate risk, and may be subject to varying degrees of credit risk.

When Issued and Delayed Delivery Securities and Forward Commitments: When issued securities, delayed delivery securities and forward commitments involve the risk that the security the Fund buys will lose value prior to its delivery. These investments 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. There also is the risk that the security will not be issued or that the other party will not meet its obligation. If this occurs, the Fund loses both the investment opportunity for the assets it set aside to pay for the security and any gain in the security’s price.

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 P shares' performance from year to year, and the table compares the Fund's Class P shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class P 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 lower than Class P shares' performance because of the lower expenses paid by Class P 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 P
(as of December 31 of each year)

Best quarter: 2^nd 2016, 2.45% and Worst quarter: 4^th 2016, -0.52%

The Fund's Class P shares' year-to-date total return as of March 31, 2017: 2.33%

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

Average Annual Total Returns - Voya Securitized Credit Fund		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class P		5.65%			5.57%	Aug. 07, 2014
Class P | After tax on distributions		3.25%			3.25%
Class P | After tax on distributions with sale		3.21%			3.15%
Bloomberg Barclays U.S. Securitized Bond Index	[1]	1.78%			2.18%

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 P 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 1.00% for Class T shares, through August 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 Separate Portfolios Trust
Prospectus Date	rr_ProspectusDate	May 31, 2017
Voya Securitized Credit Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Voya Securitized Credit Fund
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund seeks to maximize total return through a combination of current income and 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 18) or the Purchase, Exchange, and Redemption of Shares section of the Statement of Additional Information (page 98).
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	August 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 35% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	35.00%
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 securitized credit securities. The Fund will provide shareholders with at least 60 days’ prior written notice of any change in this investment policy. Securitized credit securities include commercial mortgage-backed securities (“CMBS”), asset-backed securities (“ABS”), agency and non-agency residential mortgage-backed securities (“RMBS”), and collateralized mortgage obligations (“CMOs”). These securities may be fixed rate or adjustable rate securities. Agency MBS are issued or guaranteed by the U.S. government, its agencies or instrumentalities, which include mortgage pass-through securities representing interests in pools of mortgage loans issued or guaranteed by the Government National Mortgage Association (“GNMA”), the Federal National Mortgage Association (“FNMA”), or the Federal Home Loan Mortgage Corporation (“FMLMC”). The Fund may also invest in other fixed-income instruments, which include bonds, debt instruments and other similar instruments issued by various U.S. and non-U.S. public or private sector entities. The Fund may invest in interest-only (“IO”), principal-only (“PO”), or inverse floating rate debt. The Fund may invest in mortgage dollar rolls and may purchase or sell securities on a when-issued, delayed delivery or forward commitment basis through the “to-be-announced” (“TBA”) market. With TBA transactions, the particular securities to be delivered are not identified at the trade date but the delivered securities must meet specified terms and standards. The Fund may invest a portion of its assets directly in mortgage loans. The Fund may invest in securities of any maturity or duration and the securities may have fixed, floating, or variable rates. The Fund may invest in mortgage-related high-yield (high risk) instruments rated below investment grade (commonly referred to as “junk bonds”), that at the time of purchase are rated below BBB- by S&P Global Ratings or Baa3 by Moody’s Investors Service, Inc. or are comparably rated by another Nationally Recognized Statistical Rating Organization (“NRSRO”) or, if unrated, determined by the Fund’s sub-adviser (“Sub-Adviser”) to be of comparable quality. The Fund may invest in foreign securities, including securities of issuers located in emerging market countries, which may include non-U.S. dollar denominated foreign mortgage securities. The Fund may invest in derivative instruments including options, futures contracts, options on futures, fixed-income swap agreements, credit default swap agreements, and currency related derivatives, including currency forwards and currency swaps, subject to applicable law. The Fund typically uses derivatives to seek to reduce exposure or other risks such as interest rate or currency risk, to substitute for taking a position in the underlying asset, and/or to enhance returns in the Fund. The Fund may seek to obtain market exposure to the securities in which it primarily invests by entering into a series of purchase and sale contracts or by using other investment techniques (such as buy backs or dollar rolls and reverse repurchase agreements). The Fund is non-diversified, which means it may invest a significant portion of its assets in a single issuer. 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 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. 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. Mortgage-backed securities that are not issued by U.S. government agencies may have a greater risk of default because neither the U.S. government nor an agency or instrumentality of the U.S. government has guaranteed them. The credit quality of typical asset- and mortgage-backed securities depends primarily on the credit quality of the underlying assets and the structural support (if any) provided to the securities. Credit Default Swaps: The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Fund will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that they will achieve that result, and in the meantime, central clearing and related requirements expose the Fund to new kinds of costs and risks. In addition, credit default swaps expose the Fund to the risk of improper valuation. 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/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. High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk. Interest in Loans: The value and the income streams of interests in loans (including participation interests in lease financings and assignments in secured variable or floating rate loans) will decline if borrowers delay payments or fail to pay altogether. A significant rise in market interest rates could increase this risk. Although loans may be fully collateralized when purchased, such collateral may become illiquid or decline in value. 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. Issuer Non-Diversification: A “non-diversified” investment company is subject to the risks of focusing investments in a small number of issuers, industries or foreign currencies, including being more susceptible to risks associated with a single economic, political or regulatory occurrence than a more diversified portfolio might be. Liquidity: If a security is illiquid, the Fund might be unable to sell the security at a time when the Fund’s manager might wish to sell, or at all. Further, the lack of an established secondary market may make it more difficult to value illiquid securities, exposing the Fund to the risk that the price at which it sells illiquid securities will be less than the price at which they were valued when held by the Fund. The prices of illiquid securities may be more volatile than more liquid investments. The risks associated with illiquid securities may be greater in times of financial stress. The Fund could lose money if it cannot sell a security at the time and price that would be most beneficial to the Fund. Mortgage- and/or Asset-Backed Securities: Defaults on, or low credit quality or liquidity of the underlying assets of the asset-backed (including mortgage-backed) securities may impair the value of these securities and result in losses. There may be limitations on the enforceability of any security interest or collateral granted with respect to those underlying assets and the value of collateral may not satisfy the obligation upon default. These securities also present a higher degree of prepayment and extension risk and interest rate risk than do other types of debt instruments. Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. The investment policies of the other investment companies may not be the same as those of the Fund; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Fund is typically subject. Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Fund to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Fund may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates. Securities Lending: Securities lending involves two primary risks: “investment risk” and “borrower default risk.” When lending securities, the Fund will receive cash or U.S. government securities as collateral. Investment risk is the risk that the Fund will lose money from the investment of the cash collateral received from the borrower. Borrower default risk is the risk that the Fund will lose money due to the failure of a borrower to return a borrowed security. Securities lending may result in leverage. The use of leverage may exaggerate any increase or decrease in the net asset value, causing the Fund to be more volatile. The use of leverage may increase expenses and increase the impact of the Fund’s other risks. Sovereign Debt: These securities are issued or guaranteed by foreign government entities. Investments in sovereign debt are subject to the risk that a government entity may delay payment, restructure its debt, or refuse to pay interest or repay principal on its sovereign debt. Some of these reasons may include cash flow problems, insufficient foreign currency reserves, political considerations, social changes, the relative size of its debt position to its economy or its failure to put in place economic reforms required by the International Monetary Fund or other multilateral agencies. If a government entity defaults, it may ask for more time in which to pay or for further loans. There is no legal process for collecting sovereign debts that a government does not pay or bankruptcy proceeding by which all or part of sovereign debt that a government entity has not repaid may be collected. U.S. Government Securities and Obligations: U.S. government securities are obligations of, or guaranteed by, the U.S. government, its agencies or government-sponsored enterprises. U.S. government securities are subject to market and interest rate risk, and may be subject to varying degrees of credit risk. When Issued and Delayed Delivery Securities and Forward Commitments: When issued securities, delayed delivery securities and forward commitments involve the risk that the security the Fund buys will lose value prior to its delivery. These investments 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. There also is the risk that the security will not be issued or that the other party will not meet its obligation. If this occurs, the Fund loses both the investment opportunity for the assets it set aside to pay for the security and any gain in the security’s price. 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 Nondiversified Status [Text]	rr_RiskNondiversifiedStatus	Issuer Non-Diversification: A “non-diversified” investment company is subject to the risks of focusing investments in a small number of issuers, industries or foreign currencies, including being more susceptible to risks associated with a single economic, political or regulatory occurrence than a more diversified portfolio might be.
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 P shares' performance from year to year, and the table compares the Fund's Class P shares' performance to the performance of a broad-based securities market index/indices for the same period. Class T shares and Class P 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 lower than Class P shares' performance because of the lower expenses paid by Class P 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 P shares' performance from year to year, and the table compares the Fund's Class P 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 P (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 2016, 2.45% and Worst quarter: 4th 2016, -0.52% The Fund's Class P shares' year-to-date total return as of March 31, 2017: 2.33%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class T shares and Class P 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 lower than Class P shares' performance because of the lower expenses paid by Class P 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 P 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 P shares only. After-tax returns for other classes will vary.
Voya Securitized Credit 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 Fee	rr_ManagementFeesOverAssets	0.60%
Distribution and/or Shareholder Services (12b-1) Fee	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.19%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.04%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.04%)	[2]
Total Annual Fund Operating Expenses After Waivers and Reimbursements	rr_NetExpensesOverAssets	1.00%
1 Yr	rr_ExpenseExampleYear01	$ 349
3 Yrs	rr_ExpenseExampleYear03	569
5 Yrs	rr_ExpenseExampleYear05	806
10 Yrs	rr_ExpenseExampleYear10	1,486
1 Yr	rr_ExpenseExampleNoRedemptionYear01	349
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	569
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	806
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	$ 1,486
Voya Securitized Credit Fund | Class P
Risk/Return:	rr_RiskReturnAbstract
2007	rr_AnnualReturn2007
2008	rr_AnnualReturn2008
2009	rr_AnnualReturn2009
2010	rr_AnnualReturn2010
2011	rr_AnnualReturn2011
2012	rr_AnnualReturn2012
2013	rr_AnnualReturn2013
2014	rr_AnnualReturn2014
2015	rr_AnnualReturn2015	4.62%
2016	rr_AnnualReturn2016	5.65%
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	2.33%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2016
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	2.45%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2016
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(0.52%)
1 Yr	rr_AverageAnnualReturnYear01	5.65%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	5.57%
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 07, 2014
Voya Securitized Credit Fund | After tax on distributions | Class P
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	3.25%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	3.25%
Voya Securitized Credit Fund | After tax on distributions with sale | Class P
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	3.21%
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	3.15%
Voya Securitized Credit Fund | Bloomberg Barclays U.S. Securitized Bond Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	1.78%	[3]
5 Yrs	rr_AverageAnnualReturnYear05		[3]
10 Yrs	rr_AverageAnnualReturnYear10		[3]
Since Inception	rr_AverageAnnualReturnSinceInception	2.18%	[3]

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

[2] The adviser is contractually obligated to limit expenses to 1.00% for Class T shares, through August 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

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Voya Separate Portfolios Trust
Prospectus Date	rr_ProspectusDate	May 31, 2017
Document Creation Date	dei_DocumentCreationDate	May 24, 2017