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VanEck Vectors® Muni Allocation ETF  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading VanEck Vectors® Muni Allocation ETF
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The investment objective of VanEck Vectors ® Muni Allocation ETF 1 (the “Fund”) is maximum long-term after-tax return, consisting of capital appreciation and income generally exempt from federal income tax (other than federal alternative minimum tax (“AMT”)).

1 Prior to September 1, 2020, the Fund's name was VanEck Vectors ® Municipal Allocation ETF .
Expense [Heading] rr_ExpenseHeading FUND FEES AND EXPENSES
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
The following tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund (“Shares”). You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination Sep. 01, 2021
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading PORTFOLIO TURNOVER
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund will pay transaction costs, such as commissions, when it purchases and sells securities (or “turns over” its portfolio). A higher portfolio turnover will cause the Fund to incur additional transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, may affect the Fund’s performance. During the period from May 15, 2019 (the Fund's commencement of operati ons) through April 30, 2020 , the Fund’s portfolio turnover rate was 162% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 162.00%
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Other expenses have been restated to reflect current fees
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees " Acquired Fund Fees and Expenses” reflect the Fund’s pro rata portion of the expenses charged by other investment companies in which the Fund invests, including VanEck Vectors exchange-traded funds and funds which invest exclusively in money market instruments. Because Acquired Fund Fees and Expenses are not borne directly by the Fund, they will not be reflected in the expense information in the Fund’s financial statements and the information presented in the table will differ from that presented in the Fund’s financial highlights included in the Fund’s reports to shareholders.
Expense Example [Heading] rr_ExpenseExampleHeading EXPENSE EXAMPLE
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% annual return and that the Fund’s operating expenses remain the same.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Strategy [Heading] rr_StrategyHeading PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund normally invests at least 80% of its total assets in investments the income from which is exempt from U.S. federal income tax (other than AMT). The Fund is an actively managed exchange-traded fund (“ETF”) that seeks to achieve its investment objective by investing, under normal circumstances, primarily in VanEck Vectors ETFs that are registered under the applicable federal securities laws and that invest in publicly traded municipal bonds that cover the U.S. dollar-denominated investment grade and below investment grade (high yield or "junk" bonds) tax-exempt bond market. While the Adviser currently anticipates that the Fund will invest primarily in other VanEck Vectors ETFs, the Fund may also invest in unaffiliated exchange-traded products ("ETPs"), which could include ETFs and closed-end funds , that invest in municipal bonds . The Fund does not have any limits on its investments in below investment grade securities ("junk" bonds), and the Fund will have indirect exposure to below investment grade securities through its investments in ETPs. The Fund’s investment policy to invest at least 80% of its total assets in investments the income from which is exempt from U.S. federal income tax (other than AMT) may not be changed without shareholder approval. The Fund may count investments that generate income subject to the AMT toward its 80% investment policy. For purposes of this policy, the term “assets” means net assets plus the amount of any borrowings for investment purposes. This percentage limitation applies at the time of the investment.

The Adviser primarily uses a proprietary, rules-based allocation model (the “Municipal Allocation Model”), which considers various inputs to guide asset allocation decisions and select ETPs that provide exposure to tax-exempt investments and that the Adviser believes will offer enhanced risk-adjusted returns. The term “risk-adjusted returns” does not imply that the Adviser employs low-risk strategies or that an investment in the Fund should be considered a low-risk or no risk investment. The Municipal Allocation Model uses various indicators to generate allocation signals among tax-exempt investments. These signals are used as inputs to determine ETP allocation and individual portfolio weights.

The Municipal Allocation Model utilizes various indicators to identify periods of credit and duration risk. These indicators measure various risk metrics, which include but are not limited to, market prices and trends, volatility (i.e., the measure of historic and/or predicted future variation of returns for a given security or market index), yield spreads (i.e., the difference between yields on differing fixed income securities of varying maturities, credit ratings and risk), and relative yield ratios (i.e., the yield on a security relative to the yield on a benchmark security). The Adviser anticipates that the Municipal Allocation Model will evolve over time and may incorporate additional indicators and/or remove or modify existing indicators.

The Adviser allocates the Fund’s assets to those ETPs that it believes will have returns that, in the aggregate, closely correlate (before fees and expenses) to the returns of the Municipal Allocation Model. The Municipal Allocation Model typically adjusts its allocation signals on a monthly basis, and the Adviser may adjust the Fund's portfolio allocation as needed in response to such changes in the Municipal Allocation Model. The Fund may engage in active and frequent trading of portfolio securities.

The Fund is classified as a non-diversified fund under the Investment Company Act of 1940, as amended (the “1940 Act”) and, therefore, may invest a greater percentage of its assets in a particular issuer.
Risk [Heading] rr_RiskHeading PRINCIPAL RISKS OF INVESTING IN THE FUND
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk. An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund, each of which could significantly and adversely affect the value of an investment in the Fund.

Fund of Funds Risk. The performance of the Fund is dependent on the performance of underlying funds. The Fund is subject to the risks of the underlying funds’ investments. In addition, the Fund’s shareholders will indirectly bear the expenses of the underlying funds, absorbing duplicative levels of fees with respect to investments in the underlying funds. In addition, at times certain segments of the market represented by the underlying funds may be out of favor and underperform other segments.

Risk of ETPs. The Fund may be subject to the following risks as a result of its investments in ETPs:

Municipal Securities Risk. Municipal securities are subject to the risk that litigation, legislation or other political events, local business or economic conditions, credit rating downgrades, or the bankruptcy of the issuer could have a significant effect on an issuer’s ability to make payments of principal and/or interest or otherwise affect the value of such securities. Certain municipalities may have difficulty meeting their obligations due to, among other reasons, changes in underlying demographics. Municipal securities can be significantly affected by political changes as well as uncertainties in the municipal market related to government regulation, taxation, legislative changes or the rights of municipal security holders. Because many municipal securities are issued to finance similar projects, especially those relating to education, health care, transportation, utilities and water and sewer, conditions in those sectors can affect the overall municipal market. In addition, changes in the financial condition of an individual municipal insurer can affect the overall municipal market. Municipal securities include general obligation bonds, which are backed by the “full faith and credit” of the issuer, which has the power to tax residents to pay bondholders. Timely payments depend on the issuer’s credit quality, ability to raise tax revenues and ability to maintain an adequate tax base. General obligation bonds generally are not backed by revenues from a specific project or source. Municipal securities also include revenue bonds, which are generally backed by revenue from a specific project or tax. The issuer of a revenue bond makes interest and principal payments from revenues generated from a particular source or facility, such as a tax on particular property or revenues generated from a municipal water or sewer utility or an airport. Revenue bonds generally are not backed by the full faith and credit and general taxing power of the issuer. The market for municipal bonds may be less liquid than for taxable bonds. The value and liquidity of many municipal securities have decreased as a result of the recent financial crisis, which has also adversely affected many municipal securities issuers and may continue to do so. There may be less information available on the financial condition of issuers of municipal securities than for public corporations. Municipal instruments may be susceptible to periods of economic stress, which could affect the market values and marketability of many or all municipal obligations of issuers in a state, U.S. territory, or possession. For example, the COVID-19 pandemic has significantly stressed the financial resources of many municipal issuers, which may impair a municipal issuer’s ability to meet its financial obligations when due and could adversely impact the value of its bonds, which could negatively impact the performance of the Fund.

Credit Risk. Debt securities are subject to credit risk. Credit risk refers to the possibility that the issuer or guarantor of a security will be unable and/or unwilling to make timely interest payments and/or repay the principal on its debt or to otherwise honor its obligations and/or default completely on securities. Debt securities are subject to varying degrees of credit risk, depending on the issuer’s financial condition and on the terms of the securities, which may be reflected in credit ratings. There is a possibility that the credit rating of a debt security may be downgraded after purchase or the perception of an issuer’s credit worthiness may decline, which may adversely affect the value of the security.

High Yield Securities Risk. Securities rated below investment grade are commonly referred to as high yield securities or “junk bonds.” High yield securities are often issued by issuers that are restructuring, are smaller or less creditworthy than other issuers, or are more highly indebted than other issuers. High yield securities are subject to greater risk of loss of income and principal than higher rated securities and are considered speculative. The prices of high yield securities are likely to be more sensitive to adverse economic changes or individual issuer developments than higher rated securities. During an economic downturn or substantial period of rising interest rates, issuers of high yield securities may experience financial stress that would adversely affect their ability to service their principal and interest payment obligations, to meet their projected business goals or to obtain additional financing. In the event of a default, an ETP may incur additional expenses to seek recovery. The secondary market for securities that are high yield securities may be less liquid than the markets for higher quality securities and high yield securities issued by non-corporate issuers may be less liquid than high yield securities issued by corporate issuers, which, in either instance, may have an adverse effect on the market prices of and an ETP’s ability to arrive at a fair value for certain securities. The illiquidity of the market also could make it difficult for an ETP to sell certain securities in connection with a rebalancing of its index, if applicable. In addition, periods of economic uncertainty and change may result in an increased volatility of market prices of high yield securities and a corresponding volatility in an ETP’s NAV.

Tax Risk. There is no guarantee that an ETP’s income will be exempt from U.S. federal or state income taxes. Events occurring after the date of issuance of a municipal bond or after the ETP’s acquisition of a municipal bond may result in a determination that interest on that bond is includible in gross income for U.S. federal income tax purposes retroactively to its date of issuance. Such a determination may cause a portion of prior distributions by the ETP to its shareholders to be taxable to those shareholders in the year of receipt. Federal or state changes in income or alternative minimum tax rates or in the tax treatment of municipal bonds may make municipal bonds less attractive as investments and cause them to lose value.

Interest Rate Risk . Debt securities, such as bonds, are also subject to interest rate risk. Interest rate risk refers to fluctuations in the value of a debt security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most debt securities go down. When the general level of interest rates goes down, the prices of most debt securities go up. A low interest rate environment increases the risk associated with rising interest rates, including the potential for periods of volatility and increased redemptions. In addition, debt securities with longer durations tend to be more sensitive to interest rate changes, usually making them more volatile than debt securities with shorter durations. In addition, in response to the COVID-19 pandemic, as with other serious economic disruptions, governmental authorities and regulators are enacting significant fiscal and monetary policy changes, including providing direct capital infusions into companies, creating new monetary programs and lowering interest rates. These actions present heightened risks to debt instruments, and such risks could be even further heightened if these actions are unexpectedly or suddenly reversed or are ineffective in achieving their desired outcomes.

Call Risk. An ETP may invest in callable debt securities. If interest rates fall, it is possible that issuers of callable securities will “call” (or prepay) their debt securities before their maturity date. If a call were exercised by the issuer during or following a period of declining interest rates, the ETP is likely to have to replace such called security with a lower yielding security or securities with greater risks or other less favorable features. If that were to happen, it would decrease the ETP’s net investment income.

State Concentration Risk. Certain of the ETPs may invest a significant portion of its assets in municipal obligations of issuers located in a particular state or states. Consequently, the Fund may be affected by political, economic, regulatory and other developments within the state or states and by the financial condition of the state's or states' political subdivisions, agencies, instrumentalities and public authorities.

Concentration Risk. Certain of the ETPs may be concentrated in a particular sector or sectors or industry or group of industries. To the extent that an ETP is concentrated in a particular sector or sectors or industry or group of industries, the ETP will be subject to the risk that economic, political or other conditions that have a negative effect on those sectors and/or industry or groups of industries may negatively impact the ETP to a greater extent than if the ETP’s assets were invested in a wider variety of sectors or industries.

High Portfolio Turnover Ris k . The Fund may engage in active and frequent trading of its portfolio securities. High portfolio turnover may result in increased transaction costs to the Fund, including brokerage commissions, dealer mark-ups and other transaction costs on the sale of the securities and on reinvestment in other securities. High portfolio turnover may also result in higher taxes when Fund Shares are held in a taxable account.

Model and Data Ris k . Given the complexity of the investments and strategies of the Fund, the Adviser relies heavily on quantitative models and information and data (“Models and Data”). Models and Data are used to construct sets of transactions and investments, and to provide risk management insights. When Models and Data prove to be incorrect or incomplete, any decisions made in reliance thereon expose the Fund to potential risks.

Management R is k . The Fund is subject to management risk because it is an actively managed ETF. In managing the Fund’s portfolio, the Adviser will apply investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results.

Operational Risk. The Fund is exposed to operational risk arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third parties, failed or inadequate processes and technology or system failures.

Authorized Participant Concentration Risk. The Fund may have a limited number of financial institutions that act as APs, none of which are obligated to engage in creation and/or redemption transactions. To the extent that those APs exit the business, or are unable to or choose not to process creation and/or redemption orders, and no other AP is able to step forward to create and redeem, there may be a significantly diminished trading market for Shares or Shares may trade like closed-end funds at a discount (or premium) to NAV and possibly face trading halts and/or de-listing. The AP concentration risk may be heightened in scenarios where APs have limited or diminished access to the capital required to post collateral.

No Guarantee of Active Trading Market. While Shares are listed on the Exchange, there can be no assurance that an active trading market for the Shares will be maintained. Further, secondary markets may be subject to irregular trading activity, wide bid/ask spreads and extended trade settlement periods in times of market stress because market makers and APs may step away from making a market in the Shares and in executing creation and redemption orders, which could cause a material deviation in the Fund’s market price from its NAV.

Trading Issues. Trading in Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable. In addition, trading in Shares on the Exchange is subject to trading halts caused by extraordinary market volatility pursuant to the Exchange’s “circuit breaker” rules. There can be no assurance that the requirements of the Exchange necessary to maintain the listing of the Fund will continue to be met or will remain unchanged.

Market Risk . Both the Fund and the ETPs in which the Fund may invest are subject to market risk. The prices of the securities in the Fund or an ETP are subject to the risks associated with investing in the securities market, including general economic conditions, sudden and unpredictable drops in value, exchange trading suspensions and closures and public health risks. These risks may be magnified if certain social, political, economic and other conditions and events (such as natural disasters, epidemics and pandemics, terrorism, conflicts and social unrest) adversely interrupt the global economy; in these and other circumstances, such events or developments might affect companies world-wide. An investment in the Fund or an ETP may lose money.

Fund Shares Trading, Premium/Discount Risk and Liquidity of Fund Shares. The market price of the Shares may fluctuate in response to the Fund’s NAV, the intraday value of the Fund’s holdings and supply and demand for Shares. The Adviser cannot predict whether Shares will trade above, below, or at their most recent NAV. Disruptions to creations and redemptions, the existence of market volatility or potential lack of an active trading market for Shares (including through a trading halt), as well as other factors, may result in Shares trading at a significant premium or discount to NAV or to the intraday value of the Fund’s holdings. If a shareholder purchases Shares at a time when the market price is at a premium to the NAV or sells Shares at a time when the market price is at a discount to the NAV, the shareholder may pay significantly more or receive significantly less than the underlying value of the Shares that were bought or sold, or the shareholder may be unable to sell his or her Shares. Additionally, in stressed market conditions, the market for the Fund’s Shares may become less liquid in response to deteriorating liquidity in the markets for the Fund’s underlying portfolio holdings. There are various methods by which investors can purchase and sell Shares. Investors should consult their financial intermediaries before purchasing or selling Shares of the Fund.

Non-Diversified Risk. The Fund is classified as a “non-diversified” fund under the 1940 Act. Therefore, the Fund may invest a relatively high percentage of its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. Moreover, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds .
Risk Lose Money [Text] rr_RiskLoseMoney An investment in the Fund or an ETP may lose money.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus The Fund is classified as a “non-diversified” fund under the 1940 Act. Therefore, the Fund may invest a relatively high percentage of its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. Moreover, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds .
RIsk Not Insured [Text] rr_RiskNotInsured An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The Fund commenced operations on May 15, 2019 and therefore does not have a performance history for a full calendar year. The Fund’s financial performance for the Fund’s first fiscal period is included in the “Financial Highlights” section of the Prospectus. Visit www.vaneck.com for current performance figures.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess The Fund commenced operations on May 15, 2019 and therefore does not have a performance history for a full calendar year.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.vaneck.com
VanEck Vectors® Muni Allocation ETF | VanEck Vectors Municipal Allocation ETF  
Risk/Return: rr_RiskReturnAbstract  
Shareholder Fees (fees paid directly from your investment) rr_ShareholderFeeOther none
Management Fee rr_ManagementFeesOverAssets 0.08%
Other Expenses rr_OtherExpensesOverAssets none [1],[2]
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.27% [3]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.35% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 36
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 113
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 197
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 443
[1] Other expenses have been restated to reflect current fees .
[2] Van Eck Associates Corporation (the "Adviser") will pay all expenses of the Fund, except for the fee payment under the investment management agreement, acquired fund fees and expenses, interest expense, offering costs, trading expenses, taxes and extraordinary expenses. Notwithstanding the foregoing, the Adviser has agreed to pay the offering costs until at least September 1, 2021.
[3] " Acquired Fund Fees and Expenses" reflect the Fund's pro rata portion of the expenses charged by other investment companies in which the Fund invests, including VanEck Vectors exchange-traded funds and funds which invest exclusively in money market instruments. Because Acquired Fund Fees and Expenses are not borne directly by the Fund, they will not be reflected in the expense information in the Fund's financial statements and the information presented in the table will differ from that presented in the Fund's financial highlights included in the Fund's reports to shareholders.