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Label Element Value
(Delaware Asia Select Fund)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading

What is the Fund's investment objective?

Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Delaware Asia Select Fund seeks long-term capital appreciation. Although the Fund will strive to meet its investment objective, there is no assurance that it will.

Expense [Heading] rr_ExpenseHeading

What are the Fund's fees and expenses?

Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales-charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Delaware Investments® Funds. More information about these and other discounts is available from your financial intermediary, in the Fund's prospectus under the section entitled "About your account," and in the Fund's statement of additional information (SAI) under the section entitled "Purchasing Shares."

The Fund's distributor, Delaware Distributor, L.P. (Distributor), has voluntarily agreed to waive 12b-1 fees for the Fund's Class A and Class C shares from Dec. 1, 2015 until such time as the voluntary expense cap is discontinued. The Distributor's waivers and/or reimbursements may be discontinued at any time because they are voluntary.

Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales-charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Delaware Investments® Funds. More information about these and other discounts is available from your financial intermediary, in the Fund's prospectus under the section entitled "About your account," and in the Fund's statement of additional information (SAI) under the section entitled "Purchasing Shares."
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
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 May 2, 2017
Other Expenses, New Fund, Based on Estimates [Text] rr_OtherExpensesNewFundBasedOnEstimates "Other expenses" are based on estimates for the current fiscal year.
Expense Example [Heading] rr_ExpenseExampleHeading

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 mutual funds. 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% return each year and reflects the Manager's expense waivers and reimbursements for the 1-year contractual period and the total operating expenses without waivers for years 2 through 10. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

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 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, affect the Fund's performance. Because the Fund commenced operations on Dec. 21, 2015, there is no portfolio turnover information available for the Fund's prior fiscal year. The Fund, however, will include portfolio turnover information in the future.
Strategy [Heading] rr_StrategyHeading

What are the Fund's principal investment strategies?

Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund seeks to achieve its investment objective by primarily investing in equity securities of companies with exposure to one or more countries in Asia (excluding Japan), which may include developed, emerging, and frontier countries. The portfolio managers will consider companies of any size or market capitalization. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in listed securities of companies that provide exposure to one or more countries in Asia (excluding Japan) (the 80% policy). Securities may be considered to have exposure to any one or more regions of Asia if their securities are listed in any Asian market (excluding Japan) or if they are listed in any other eligible market (such as the United States or the United Kingdom) and derive, or are expected to derive, a significant portion of their revenues from one or more countries in Asia (excluding Japan).

The Fund's investment manager is Delaware Management Company (Manager). The Manager has selected Macquarie Funds Management Hong Kong Limited (Macquarie Funds Management) to serve as the Fund's sub-advisor. Macquarie Funds Management is responsible for the day-to-day investment management of the Fund's assets. Macquarie Funds Management selects investments for the Fund based on its own investment style and strategy. Macquarie Funds Management applies a rigorous bottom-up process and strict portfolio discipline to minimize risk and attempts to exploit key market inefficiencies in Asian markets (excluding Japan). Macquarie Funds Management employs screening techniques followed by in-depth fundamental research to identify companies that: are characterized by high return on equity and strong cash flows; appear undervalued over the long term; are leaders in attractive industries with a competitive advantage; and are able to demonstrate strong management and corporate governance. Macquarie Funds Management seeks long-term capital appreciation by focusing primarily on domestic-demand stocks and tends to underweight mega caps and state-owned enterprises.

Macquarie Funds Management may invest in any industry sector, but will use all reasonable efforts to ensure that the Fund does not invest in: (1) companies whose primary business is the manufacture of tobacco products, or (2) companies involved in the production of anti-personnel mines, nuclear weapons, chemical weapons, or biological weapons where publicly available information clearly demonstrates that such company is actively and knowingly involved in the production of such weapons.

The Fund's 80% policy is nonfundamental and may be changed without shareholder approval. Fund shareholders would be given at least 60 days' notice prior to any such change.
Risk [Heading] rr_RiskHeading

What are the principal risks of investing in the Fund?

Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Fund will increase and decrease according to changes in the value of the securities in the Fund's portfolio. Principal risks include:

Market risk — The risk that all or a majority of the securities in a certain market — such as the stock or bond market — will decline in value because of factors such as adverse political or economic conditions, future expectations, investor confidence, or heavy institutional selling.

Foreign risk — The risk that foreign securities (particularly in emerging markets) may be adversely affected by political instability, changes in currency exchange rates, inefficient markets and higher transaction costs, foreign economic conditions, the imposition of economic or trade sanctions, or inadequate or different regulatory and accounting standards.

Company size risk — The risk that investments in small- and/or medium-sized companies may be more volatile than those of larger companies because of limited financial resources or dependence on narrow product lines.

Government and regulatory risk — The risk that governments or regulatory authorities have, from time to time, taken or considered actions that could adversely affect various sectors of the securities markets and significantly affect fund performance.

Liquidity risk — The possibility that securities cannot be readily sold within seven days at approximately the price at which a portfolio has valued them.

Investments not guaranteed by Delaware Management Company (Manager) or its affiliates — Neither the Manager nor its affiliates noted in this document are authorized deposit-taking institutions for the purposes of the Banking Act 1959 (Commonwealth of Australia). The obligations of these entities do not represent deposits or other liabilities of Macquarie Bank Limited (MBL). MBL does not guarantee or otherwise provide assurance in respect of the obligations of these entities, unless noted otherwise.
Risk Lose Money [Text] rr_RiskLoseMoney Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Fund will increase and decrease according to changes in the value of the securities in the Fund's portfolio.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

How has Delaware Asia Select Fund performed?

Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

Because the Fund commenced operations on Dec. 1, 2015, there is no performance information for a full calendar year. You may obtain the Fund's most recently available month-end performance by calling 800 362-7500 or by visiting our website at delawareinvestments.com/performance.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress delawareinvestments.com/performance
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 362-7500
(Delaware Asia Select Fund) | Class A  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.95%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 1.73% [1]
Total annual fund operating expenses rr_ExpensesOverAssets 2.93%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (1.38%) [2]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.55%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 724
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,307
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,914
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 3,547
(Delaware Asia Select Fund) | Class C  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00% [3]
Management fees rr_ManagementFeesOverAssets 0.95%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 1.73% [1]
Total annual fund operating expenses rr_ExpensesOverAssets 3.68%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (1.38%) [2]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 2.30%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 333
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 999
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,785
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 3,843
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 233
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 999
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,785
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 3,843
(Delaware Asia Select Fund) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.95%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 1.73% [1]
Total annual fund operating expenses rr_ExpensesOverAssets 2.68%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (1.38%) [2]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.30%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 132
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 701
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,297
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,911
(Delaware Emerging Markets Fund)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading

What is the Fund's investment objective?

Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Delaware Emerging Markets Fund seeks long-term capital appreciation.

Expense [Heading] rr_ExpenseHeading

What are the Fund's fees and expenses?

Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales-charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Delaware Investments® Funds. More information about these and other discounts is available from your financial intermediary, in the Fund's prospectus under the section entitled "About your account," and in the Fund's statement of additional information (SAI) under the section entitled "Purchasing Shares."

Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales-charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Delaware Investments® Funds. More information about these and other discounts is available from your financial intermediary, in the Fund's prospectus under the section entitled "About your account," and in the Fund's statement of additional information (SAI) under the section entitled "Purchasing Shares."
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
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 May 2, 2017
Expense Example [Heading] rr_ExpenseExampleHeading

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 mutual funds. 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% return each year and reflects the Manager's expense waivers and reimbursements for the 1-year contractual period and the total operating expenses without waivers for years 2 through 10. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

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 result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 12% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 12.00%
Strategy [Heading] rr_StrategyHeading

What are the Fund's principal investment strategies?

Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund invests primarily in a broad range of equity securities of companies located in emerging market countries. Emerging market countries include those currently considered to be developing by the World Bank, the United Nations, or the countries' governments. These countries typically are located in the Asia-Pacific region, Eastern Europe, the Middle East, Central America, South America, and Africa. Under normal circumstances, at least 80% of the Fund's net assets, plus any borrowings for investment purposes, will be invested in emerging market issuers (80% policy). The Fund's 80% policy is nonfundamental and may be changed without shareholder approval. Fund shareholders would be given at least 60 days' notice prior to any such change. The Fund may invest in companies of any size and may invest more than 25% of its total assets in the securities of issuers located in the same country.

Although the Fund invests primarily in companies from countries considered to be emerging, the Fund will also invest in companies that are not in emerging countries: (1) if the portfolio manager believes that the performance of a company or its industry will be influenced by opportunities in the emerging markets; (2) to maintain exposure to industry segments where the portfolio manager believes there are not satisfactory investment opportunities in emerging countries; and (3) if the portfolio manager believes there is the potential for significant benefit to the Fund.

The Fund's portfolio manager believes that although market price and intrinsic business value are positively correlated in the long run, short-term divergences can emerge. The Fund seeks to take advantage of these divergences through a fundamental, bottom-up approach. The Fund invests in securities of companies with sustainable franchises when they are trading at a discount to the portfolio manager's intrinsic value estimate for that security.

The Fund defines sustainable franchises as those companies with potential to earn excess returns above their cost of capital over the long run. Sustainability analysis involves identification of a company's source of competitive advantage and the ability of its management to maximize its return potential. The Fund prefers companies with large market opportunities in which to deploy capital, providing opportunities to grow faster than the overall economy.

Intrinsic value assessment is quantitatively determined through a variety of valuation methods including discounted cash flow, replacement cost, private market transaction, and multiples analysis.
Risk [Heading] rr_RiskHeading

What are the principal risks of investing in the Fund?

Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Fund will increase and decrease according to changes in the value of the securities in the Fund's portfolio. Principal risks include:

Market risk — The risk that all or a majority of the securities in a certain market — such as the stock or bond market — will decline in value because of factors such as adverse political or economic conditions, future expectations, investor confidence, or heavy institutional selling.

Foreign risk — The risk that foreign securities (particularly in emerging markets) may be adversely affected by political instability, changes in currency exchange rates, inefficient markets and higher transaction costs, foreign economic conditions, the imposition of economic or trade sanctions, or inadequate or different regulatory and accounting standards.

Company size risk — The risk that investments in small- and/or medium-sized companies may be more volatile than those of larger companies because of limited financial resources or dependence on narrow product lines.

Government and regulatory risk — The risk that governments or regulatory authorities have, from time to time, taken or considered actions that could adversely affect various sectors of the securities markets and significantly affect fund performance.

Investments not guaranteed by Delaware Management Company (Manager) or its affiliates — Neither the Manager nor its affiliates noted in this document are authorized deposit-taking institutions for the purposes of the Banking Act 1959 (Commonwealth of Australia). The obligations of these entities do not represent deposits or other liabilities of Macquarie Bank Limited (MBL). MBL does not guarantee or otherwise provide assurance in respect of the obligations of these entities, unless noted otherwise.
Risk Lose Money [Text] rr_RiskLoseMoney Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Fund will increase and decrease according to changes in the value of the securities in the Fund's portfolio.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

How has Delaware Emerging Markets Fund performed?

Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual total returns for the 1-, 5-, and 10-year or lifetime periods compare with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. The returns reflect any expense caps in effect during these periods. The returns would be lower without the expense caps. You may obtain the Fund's most recently available month-end performance by calling 800 523-1918 or by visiting our website at delawareinvestments.com/performance.

Prior to Sept. 25, 2006, the Fund was sub-advised by Mondrian Investment Partners Limited. Since Sept. 25, 2006, the Fund has been managed by the Manager. The historical returns do not reflect these changes.
Bar Chart [Heading] rr_BarChartHeading

Year-by-year total return (Class A)

Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

As of March. 31, 2016, the Fund's Class A shares had a calendar year-to-date return of 5.49%. During the periods illustrated in this bar chart, Class A's highest quarterly return was 35.10% for the quarter ended June 30, 2009, and its lowest quarterly return was -26.90% for the quarter ended Sept. 30, 2008. The maximum Class A sales charge of 5.75%, which is normally deducted when you purchase shares, is not reflected in the highest/lowest quarterly returns or in the bar chart. If this fee were included, the returns would be less than those shown. The average annual total returns in the table below do include the sales charge.

Class R6 shares have not commenced operations as of the date of this Prospectus and therefore no average annual total returns are shown below for this share class.
Performance Table Heading rr_PerformanceTableHeading

Average annual total returns for periods ended December 31, 2015

Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock

After-tax performance is presented only for Class A shares of the Fund. The after-tax returns for other Fund classes may vary. Actual after-tax returns depend on the investor's individual tax situation and may differ from the returns shown. After-tax returns are not relevant for shares held in tax-deferred investment vehicles such as employer-sponsored 401(k) plans and individual retirement accounts (IRAs). The after-tax returns shown are calculated using the highest individual federal marginal income tax rates in effect during the periods presented and do not reflect the impact of state and local taxes.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns shown are calculated using the highest individual federal marginal income tax rates in effect during the periods presented and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred After-tax returns are not relevant for shares held in tax-deferred investment vehicles such as employer-sponsored 401(k) plans and individual retirement accounts (IRAs).
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund's past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax performance is presented only for Class A shares of the Fund.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress delawareinvestments.com/performance
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 523-1918
(Delaware Emerging Markets Fund) | MSCI Emerging Markets Index (gross) (reflects no deduction for fees, expenses, or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (14.60%)
5 Years rr_AverageAnnualReturnYear05 (4.47%)
10 Years rr_AverageAnnualReturnYear10 3.95%
(Delaware Emerging Markets Fund) | MSCI Emerging Markets Index (net) (reflects no deduction for fees or expenses)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (14.92%)
5 Years rr_AverageAnnualReturnYear05 (4.81%)
10 Years rr_AverageAnnualReturnYear10 3.61%
(Delaware Emerging Markets Fund) | Class A  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 1.18%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.30%
Total annual fund operating expenses rr_ExpensesOverAssets 1.73%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.03%) [4]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.70%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 738
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,086
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,457
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,496
Annual Return 2006 rr_AnnualReturn2006 27.12%
Annual Return 2007 rr_AnnualReturn2007 40.61%
Annual Return 2008 rr_AnnualReturn2008 (50.70%)
Annual Return 2009 rr_AnnualReturn2009 78.05%
Annual Return 2010 rr_AnnualReturn2010 18.53%
Annual Return 2011 rr_AnnualReturn2011 (20.82%)
Annual Return 2012 rr_AnnualReturn2012 16.37%
Annual Return 2013 rr_AnnualReturn2013 13.74%
Annual Return 2014 rr_AnnualReturn2014 (8.48%)
Annual Return 2015 rr_AnnualReturn2015 (13.93%)
Year to Date Return, Label rr_YearToDateReturnLabel As of March. 31, 2016, the Fund's Class A shares had a calendar year-to-date return of 5.49%.
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 5.49%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Mar. 31, 2016
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest quarterly return was 35.10% for the quarter ended June 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 35.10%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest quarterly return was -26.90% for the quarter ended Sept. 30, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (26.90%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2008
1 Year rr_AverageAnnualReturnYear01 (18.89%)
5 Years rr_AverageAnnualReturnYear05 (4.90%)
10 Years rr_AverageAnnualReturnYear10 3.77%
(Delaware Emerging Markets Fund) | Class A | return after taxes on distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (18.72%)
5 Years rr_AverageAnnualReturnYear05 (5.05%)
10 Years rr_AverageAnnualReturnYear10 2.63%
(Delaware Emerging Markets Fund) | Class A | return after taxes on distributions and sale of Fund shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (10.52%)
5 Years rr_AverageAnnualReturnYear05 (3.49%)
10 Years rr_AverageAnnualReturnYear10 3.45%
(Delaware Emerging Markets Fund) | Class C  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00% [5]
Management fees rr_ManagementFeesOverAssets 1.18%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.30%
Total annual fund operating expenses rr_ExpensesOverAssets 2.48%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.03%) [4]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 2.45%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 348
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 770
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,318
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,814
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 248
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 770
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,318
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,814
1 Year rr_AverageAnnualReturnYear01 (15.42%)
5 Years rr_AverageAnnualReturnYear05 (4.48%)
10 Years rr_AverageAnnualReturnYear10 3.60%
(Delaware Emerging Markets Fund) | Class R  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 1.18%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other expenses rr_OtherExpensesOverAssets 0.30%
Total annual fund operating expenses rr_ExpensesOverAssets 1.98%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.03%) [4]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.95%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 198
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 618
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,065
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,304
Label rr_AverageAnnualReturnLabel (lifetime: 8/31/09–12/31/15)
1 Year rr_AverageAnnualReturnYear01 (14.16%)
5 Years rr_AverageAnnualReturnYear05 (4.01%)
Lifetime rr_AverageAnnualReturnSinceInception 2.19%
(Delaware Emerging Markets Fund) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 1.18%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.30%
Total annual fund operating expenses rr_ExpensesOverAssets 1.48%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.03%) [4]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.45%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 148
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 465
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 805
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,766
1 Year rr_AverageAnnualReturnYear01 (13.75%)
5 Years rr_AverageAnnualReturnYear05 (3.52%)
10 Years rr_AverageAnnualReturnYear10 4.64%
(Delaware Emerging Markets Fund) | Class R6  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 1.18%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.17% [6]
Total annual fund operating expenses rr_ExpensesOverAssets 1.35%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.03%) [4]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.32%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 134
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 425
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 736
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,621
(Delaware Global Value Fund)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading

What is the Fund's investment objective?

Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Delaware Global Value Fund seeks long-term capital appreciation.

Expense [Heading] rr_ExpenseHeading

What are the Fund's fees and expenses?

Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales-charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Delaware Investments® Funds. More information about these and other discounts is available from your financial intermediary, in the Fund's prospectus under the section entitled "About your account," and in the Fund's statement of additional information (SAI) under the section entitled "Purchasing Shares."

Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales-charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Delaware Investments® Funds. More information about these and other discounts is available from your financial intermediary, in the Fund's prospectus under the section entitled "About your account," and in the Fund's statement of additional information (SAI) under the section entitled "Purchasing Shares."
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
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 May 2, 2017
Expense Example [Heading] rr_ExpenseExampleHeading

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 mutual funds. 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% return each year and reflects the Manager's expense waivers and reimbursements for the 1-year contractual period and the total operating expenses without waivers for years 2 through 10. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

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 result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 14% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 14.00%
Strategy [Heading] rr_StrategyHeading

What are the Fund's principal investment strategies?

Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Delaware Global Value Fund seeks to achieve its objective by investing primarily in U.S. and non-U.S. companies, which may include companies located or operating in developed or emerging countries. Under normal circumstances, the Fund will invest at least 65% of its total assets in equity securities of issuers located throughout the world, including the United States, and the Fund will invest at least 40% of its net assets in non-U.S. securities.

The Fund may invest in companies across all market capitalizations, although the Fund will typically invest in mid- and large-cap equity securities. More than 25% of the Fund's total assets may be invested in the securities of issuers located in the same country; however, the Fund will limit investments in emerging market securities to 25% of the Fund's net assets.

In selecting investments for the Fund:

  • The portfolio management team searches for undervalued companies that have potential for improvement that is not yet recognized by others in the marketplace. These opportunities may exist because of temporary company-specific problems, or because the companies are in industries that may be out of favor.

  • The portfolio management team believes that the potential for exceptional returns can be realized by assembling a global portfolio of fundamentally strong companies that have superior business prospects and that are priced below the portfolio management team's estimate of intrinsic value.

  • Fundamental research and analysis are the driving forces behind each security chosen by the portfolio management team. Security selection is based on relative value comparisons, applying the portfolio management team's understanding of industry cycles, global competitors, and company-specific variables. The investment process combines quantitative valuation screens with traditional in-depth fundamental analysis, experienced judgment, and patience.

  • The portfolio management team places great emphasis on those securities it believes can offer the best long-term appreciation within a three- to five-year horizon. The portfolio management team constructs a portfolio on a stock-by-stock basis, and the holdings are diversified across market capitalization, geography, and economic sectors.
Risk [Heading] rr_RiskHeading

What are the principal risks of investing in the Fund?

Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Fund will increase and decrease according to changes in the value of the securities in the Fund's portfolio. Principal risks include:

Market risk — The risk that all or a majority of the securities in a certain market — such as the stock or bond market — will decline in value because of factors such as adverse political or economic conditions, future expectations, investor confidence, or heavy institutional selling.

Foreign risk — The risk that foreign securities (particularly in emerging markets) may be adversely affected by political instability, changes in currency exchange rates, inefficient markets and higher transaction costs, foreign economic conditions, the imposition of economic or trade sanctions, or inadequate or different regulatory and accounting standards.

Company size risk — The risk that investments in small- and/or medium-sized companies may be more volatile than those of larger companies because of limited financial resources or dependence on narrow product lines.

Government and regulatory risk — The risk that governments or regulatory authorities have, from time to time, taken or considered actions that could adversely affect various sectors of the securities markets and significantly affect fund performance.

Investments not guaranteed by Delaware Management Company (Manager) or its affiliates — Neither the Manager nor its affiliates noted in this document are authorized deposit-taking institutions for the purposes of the Banking Act 1959 (Commonwealth of Australia). The obligations of these entities do not represent deposits or other liabilities of Macquarie Bank Limited (MBL). MBL does not guarantee or otherwise provide assurance in respect of the obligations of these entities, unless noted otherwise.
Risk Lose Money [Text] rr_RiskLoseMoney Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Fund will increase and decrease according to changes in the value of the securities in the Fund's portfolio.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

How has Delaware Global Value Fund performed?

Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual total returns for the 1-, 5-, and 10-year periods compare with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. The returns reflect any expense caps in effect during these periods. The returns would be lower without the expense caps. You may obtain the Fund's most recently available month-end performance by calling 800 523-1918 or by visiting our website at delawareinvestments.com/performance.

On March 30, 2006, the Fund changed its investment strategy to allow it to invest a significant portion of its assets in U.S. equity securities and in securities of issuers of all sizes, eliminating its prior focus on the securities of small-capitalization issuers. Prior to March 30, 2006, the Fund was sub-advised by Mondrian Investment Partners Limited. Since March 30, 2006, the Fund has been managed by the Manager. The historical returns do not reflect these changes. As of the date of this prospectus, there are no Class R shares outstanding.
Bar Chart [Heading] rr_BarChartHeading

Year-by-year total return (Class A)

Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

As of March. 31, 2016, the Fund's Class A shares had a calendar year-to-date return of 0.00%. During the periods illustrated in this bar chart, Class A's highest quarterly return was 20.69% for the quarter ended Sept. 30, 2009, and its lowest quarterly return was -20.99% for the quarter ended Sept. 30, 2011. The maximum Class A sales charge of 5.75%, which is normally deducted when you purchase shares, is not reflected in the highest/lowest quarterly returns or in the bar chart. If this fee were included, the returns would be less than those shown. The average annual total returns in the table below do include the sales charge.
Performance Table Heading rr_PerformanceTableHeading

Average annual total returns for periods ended December 31, 2015

Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock

After-tax performance is presented only for Class A shares of the Fund. The after-tax returns for other Fund classes may vary. Actual after-tax returns depend on the investor's individual tax situation and may differ from the returns shown. After-tax returns are not relevant for shares held in tax-deferred investment vehicles such as employer-sponsored 401(k) plans and individual retirement accounts (IRAs). The after-tax returns shown are calculated using the highest individual federal marginal income tax rates in effect during the periods presented and do not reflect the impact of state and local taxes.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns shown are calculated using the highest individual federal marginal income tax rates in effect during the periods presented and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred After-tax returns are not relevant for shares held in tax-deferred investment vehicles such as employer-sponsored 401(k) plans and individual retirement accounts (IRAs).
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund's past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax performance is presented only for Class A shares of the Fund.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress delawareinvestments.com/performance
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 523-1918
(Delaware Global Value Fund) | MSCI World Index (gross) (reflects no deduction for fees, expenses, or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (0.32%)
5 Years rr_AverageAnnualReturnYear05 8.19%
10 Years rr_AverageAnnualReturnYear10 5.56%
(Delaware Global Value Fund) | MSCI World Index (net) (reflects no deduction for fees or expenses)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (0.87%)
5 Years rr_AverageAnnualReturnYear05 7.59%
10 Years rr_AverageAnnualReturnYear10 4.98%
(Delaware Global Value Fund) | Class A  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.85%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.70%
Total annual fund operating expenses rr_ExpensesOverAssets 1.80%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.25%) [7]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.55%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 724
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,086
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,472
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,550
Annual Return 2006 rr_AnnualReturn2006 28.61%
Annual Return 2007 rr_AnnualReturn2007 1.02%
Annual Return 2008 rr_AnnualReturn2008 (42.66%)
Annual Return 2009 rr_AnnualReturn2009 34.33%
Annual Return 2010 rr_AnnualReturn2010 10.69%
Annual Return 2011 rr_AnnualReturn2011 (6.75%)
Annual Return 2012 rr_AnnualReturn2012 13.49%
Annual Return 2013 rr_AnnualReturn2013 24.81%
Annual Return 2014 rr_AnnualReturn2014 1.25%
Annual Return 2015 rr_AnnualReturn2015 (4.71%)
Year to Date Return, Label rr_YearToDateReturnLabel As of March. 31, 2016, the Fund's Class A shares had a calendar year-to-date return of 0.00%.
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn none
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Mar. 31, 2016
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest quarterly return was 20.69% for the quarter ended Sept. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 20.69%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2009
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest quarterly return was -20.99% for the quarter ended Sept. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (20.99%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
1 Year rr_AverageAnnualReturnYear01 (10.20%)
5 Years rr_AverageAnnualReturnYear05 3.73%
10 Years rr_AverageAnnualReturnYear10 2.89%
(Delaware Global Value Fund) | Class A | return after taxes on distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (10.27%)
5 Years rr_AverageAnnualReturnYear05 3.61%
10 Years rr_AverageAnnualReturnYear10 2.39%
(Delaware Global Value Fund) | Class A | return after taxes on distributions and sale of Fund shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (5.56%)
5 Years rr_AverageAnnualReturnYear05 2.95%
10 Years rr_AverageAnnualReturnYear10 2.44%
(Delaware Global Value Fund) | Class C  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00% [5]
Management fees rr_ManagementFeesOverAssets 0.85%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.70%
Total annual fund operating expenses rr_ExpensesOverAssets 2.55%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.25%) [7]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 2.30%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 333
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 770
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,333
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,867
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 233
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 770
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,333
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,867
1 Year rr_AverageAnnualReturnYear01 (6.36%)
5 Years rr_AverageAnnualReturnYear05 4.20%
10 Years rr_AverageAnnualReturnYear10 2.74%
(Delaware Global Value Fund) | Class R  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.85%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other expenses rr_OtherExpensesOverAssets 0.70%
Total annual fund operating expenses rr_ExpensesOverAssets 2.05%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.25%) [7]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.80%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 183
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 619
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,080
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,359
(Delaware Global Value Fund) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.85%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.70%
Total annual fund operating expenses rr_ExpensesOverAssets 1.55%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.25%) [7]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.30%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 132
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 465
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 821
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,824
1 Year rr_AverageAnnualReturnYear01 (4.54%)
5 Years rr_AverageAnnualReturnYear05 5.24%
10 Years rr_AverageAnnualReturnYear10 3.76%
(Delaware International Value Equity Fund)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading

What is the Fund's investment objective?

Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Delaware International Value Equity Fund seeks long-term growth without undue risk to principal.

Expense [Heading] rr_ExpenseHeading

What are the Fund's fees and expenses?

Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales-charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Delaware Investments® Funds. More information about these and other discounts is available from your financial intermediary, in the Fund's prospectus under the section entitled "About your account," and in the Fund's statement of additional information (SAI) under the section entitled "Purchasing Shares."

Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales-charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Delaware Investments® Funds. More information about these and other discounts is available from your financial intermediary, in the Fund's prospectus under the section entitled "About your account," and in the Fund's statement of additional information (SAI) under the section entitled "Purchasing Shares."
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
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 May 2, 2017
Expense Example [Heading] rr_ExpenseExampleHeading

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 mutual funds. 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% return each year and reflects the Manager's expense waivers and reimbursements for the 1-year contractual period and the total operating expenses without waivers for years 2 through 10. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

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 result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 13% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 13.00%
Strategy [Heading] rr_StrategyHeading

What are the Fund's principal investment strategies?

Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund invests primarily in equity securities that provide the potential for capital appreciation. Under normal circumstances, the Fund will invest at least 65% of its total assets in equity securities of issuers that are organized, have a majority of their assets, or generate the majority of their operating income outside the United States. The Fund may invest more than 25% of its total assets in the securities of issuers located in the same country. The Fund may invest up to 15% of its total assets in emerging markets securities.

Under normal circumstances, the Fund will invest at least 80% of its net assets, plus any borrowings for investment purposes, in equity securities (80% policy). The Fund's 80% policy is nonfundamental and may be changed without shareholder approval. Fund shareholders would be given at least 60 days' notice prior to any such change.

The portfolio management team searches for undervalued companies that have potential for improvement that has not yet been recognized by others in the marketplace. These opportunities may exist because of temporary company-specific problems or because the companies are in industries that may be out of favor.

The portfolio management team believes that the potential for strong returns can be realized by assembling an international portfolio of fundamentally strong companies that have superior business prospects and that are priced below the team's estimate of intrinsic value. The portfolio management team focuses on out-of-favor stocks that have the potential to realize their intrinsic value within a three- to five-year horizon.

In selecting investments for the Fund:

  • Fundamental research and analysis are the driving forces behind each security chosen by the portfolio management team. Security selection is based on relative value comparisons, applying the team's understanding of industry cycles, global competitors, and company-specific variables. The investment process combines quantitative valuation screens with traditional in-depth fundamental analysis, experienced judgment, and patience.

  • The portfolio management team places great emphasis on those securities it believes can offer the best long-term appreciation within a three- to five-year horizon. The team constructs the portfolio on a stock-by-stock basis, and the holdings are diversified across market capitalization, geography, and economic sector.

Risk [Heading] rr_RiskHeading

What are the principal risks of investing in the Fund?

Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Fund will increase and decrease according to changes in the value of the securities in the Fund's portfolio. Principal risks include:

Market risk — The risk that all or a majority of the securities in a certain market — such as the stock or bond market — will decline in value because of factors such as adverse political or economic conditions, future expectations, investor confidence, or heavy institutional selling.

Foreign risk — The risk that foreign securities (particularly in emerging markets) may be adversely affected by political instability, changes in currency exchange rates, inefficient markets and higher transaction costs, foreign economic conditions, the imposition of economic or trade sanctions, or inadequate or different regulatory and accounting standards.

Government and regulatory risk — The risk that governments or regulatory authorities have, from time to time, taken or considered actions that could adversely affect various sectors of the securities markets and significantly affect fund performance.

Investments not guaranteed by Delaware Management Company (Manager) or its affiliates — Neither the Manager nor its affiliates noted in this document are authorized deposit-taking institutions for the purposes of the Banking Act 1959 (Commonwealth of Australia). The obligations of these entities do not represent deposits or other liabilities of Macquarie Bank Limited (MBL). MBL does not guarantee or otherwise provide assurance in respect of the obligations of these entities, unless noted otherwise.
Risk Lose Money [Text] rr_RiskLoseMoney Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Fund will increase and decrease according to changes in the value of the securities in the Fund's portfolio.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

How has Delaware International Value Equity Fund performed?

Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual total returns for the 1-, 5-, and 10-year periods compare with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. The returns reflect any expense caps in effect during these periods. The returns would be lower without the expense caps. You may obtain the Fund's most recently available month-end performance by calling 800 523-1918 or by visiting our website at delawareinvestments.com/performance.

Prior to May 1, 2006, the Fund was sub-advised by Mondrian Investment Partners Limited. Since May 1, 2006, the Fund has been managed by the Manager. The historical returns do not reflect these changes.
Bar Chart [Heading] rr_BarChartHeading

Year-by-year total return (Class A)

Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

As of March. 31, 2016, the Fund's Class A shares had a calendar year-to-date return of -1.90%. During the periods illustrated in this bar chart, Class A's highest quarterly return was 22.07% for the quarter ended June 30, 2009, and its lowest quarterly return was -25.22% for the quarter ended Sept. 30, 2011. The maximum Class A sales charge of 5.75%, which is normally deducted when you purchase shares, is not reflected in the highest/lowest quarterly returns or in the bar chart. If this fee were included, the returns would be less than those shown. The average annual total returns in the table below do include the sales charge.
Performance Table Heading rr_PerformanceTableHeading

Average annual total returns for periods ended December 31, 2015

Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock

After-tax performance is presented only for Class A shares of the Fund. The after-tax returns for other Fund classes may vary. Actual after-tax returns depend on the investor's individual tax situation and may differ from the returns shown. After-tax returns are not relevant for shares held in tax-deferred investment vehicles such as employer-sponsored 401(k) plans and individual retirement accounts (IRAs). The after-tax returns shown are calculated using the highest individual federal marginal income tax rates in effect during the periods presented and do not reflect the impact of state and local taxes.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns shown are calculated using the highest individual federal marginal income tax rates in effect during the periods presented and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred After-tax returns are not relevant for shares held in tax-deferred investment vehicles such as employer-sponsored 401(k) plans and individual retirement accounts (IRAs).
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund's past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax performance is presented only for Class A shares of the Fund.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress delawareinvestments.com/performance
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 523-1918
(Delaware International Value Equity Fund) | MSCI EAFE Index (gross) (reflects no deduction for fees, expenses, or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (0.39%)
5 Years rr_AverageAnnualReturnYear05 4.07%
10 Years rr_AverageAnnualReturnYear10 3.50%
(Delaware International Value Equity Fund) | MSCI EAFE Index (net) (reflects no deduction for fees or expenses)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (0.81%)
5 Years rr_AverageAnnualReturnYear05 3.60%
10 Years rr_AverageAnnualReturnYear10 3.03%
(Delaware International Value Equity Fund) | Class A  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.85%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.26%
Total annual fund operating expenses rr_ExpensesOverAssets 1.36%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets [8]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.36%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 706
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 981
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,277
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,116
Annual Return 2006 rr_AnnualReturn2006 22.93%
Annual Return 2007 rr_AnnualReturn2007 4.63%
Annual Return 2008 rr_AnnualReturn2008 (42.52%)
Annual Return 2009 rr_AnnualReturn2009 36.02%
Annual Return 2010 rr_AnnualReturn2010 9.75%
Annual Return 2011 rr_AnnualReturn2011 (14.22%)
Annual Return 2012 rr_AnnualReturn2012 14.76%
Annual Return 2013 rr_AnnualReturn2013 22.33%
Annual Return 2014 rr_AnnualReturn2014 (8.82%)
Annual Return 2015 rr_AnnualReturn2015 0.51%
Year to Date Return, Label rr_YearToDateReturnLabel As of March. 31, 2016, the Fund's Class A shares had a calendar year-to-date return of -1.90%.
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn (1.90%)
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Mar. 31, 2016
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest quarterly return was 22.07% for the quarter ended June 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 22.07%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest quarterly return was -25.22% for the quarter ended Sept. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (25.22%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
1 Year rr_AverageAnnualReturnYear01 (5.29%)
5 Years rr_AverageAnnualReturnYear05 0.80%
10 Years rr_AverageAnnualReturnYear10 1.39%
(Delaware International Value Equity Fund) | Class A | return after taxes on distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (5.44%)
5 Years rr_AverageAnnualReturnYear05 0.57%
10 Years rr_AverageAnnualReturnYear10 0.64%
(Delaware International Value Equity Fund) | Class A | return after taxes on distributions and sale of Fund shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (2.61%)
5 Years rr_AverageAnnualReturnYear05 0.72%
10 Years rr_AverageAnnualReturnYear10 1.41%
(Delaware International Value Equity Fund) | Class C  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00% [5]
Management fees rr_ManagementFeesOverAssets 0.85%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.26%
Total annual fund operating expenses rr_ExpensesOverAssets 2.11%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets [8]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 2.11%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 314
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 661
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,134
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,441
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 214
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 661
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,134
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,441
1 Year rr_AverageAnnualReturnYear01 (1.27%)
5 Years rr_AverageAnnualReturnYear05 1.25%
10 Years rr_AverageAnnualReturnYear10 1.26%
(Delaware International Value Equity Fund) | Class R  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.85%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other expenses rr_OtherExpensesOverAssets 0.26%
Total annual fund operating expenses rr_ExpensesOverAssets 1.61%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets [8]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.61%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 164
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 508
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 876
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,911
1 Year rr_AverageAnnualReturnYear01 0.24%
5 Years rr_AverageAnnualReturnYear05 1.76%
10 Years rr_AverageAnnualReturnYear10 1.78%
(Delaware International Value Equity Fund) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.85%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.26%
Total annual fund operating expenses rr_ExpensesOverAssets 1.11%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets [8]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.11%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 113
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 353
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 612
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,352
1 Year rr_AverageAnnualReturnYear01 0.69%
5 Years rr_AverageAnnualReturnYear05 2.26%
10 Years rr_AverageAnnualReturnYear10 2.27%
[1] "Other expenses" are based on estimates for the current fiscal year.
[2] The Fund's investment manager, Delaware Management Company (Manager), has contractually agreed to waive all or a portion of its investment advisory fees and/or pay/reimburse expenses (excluding any 12b-1 fees, acquired fund fees and expenses, taxes, interest, short sale and dividend interest expenses, brokerage fees, certain insurance costs, and nonroutine expenses or costs, including, but not limited to, those relating to reorganizations, litigation, conducting shareholder meetings, and liquidations) in order to prevent total annual fund operating expenses from exceeding 1.30% of the Fund's average daily net assets from Dec. 1, 2015 through May 2, 2017. These waivers and reimbursements may only be terminated by agreement of the Manager and the Fund.
[3] Class C shares redeemed within one year of purchase are subject to a 1.00% contingent deferred sales charge (CDSC).
[4] The Fund's investment manager, Delaware Management Company (Manager), has contractually agreed to waive all or a portion of its investment advisory fees and/or pay/reimburse expenses (excluding any 12b-1 fees, acquired fund fees and expenses, taxes, interest, short sale and dividend interest expenses, brokerage fees, certain insurance costs, and nonroutine expenses or costs, including, but not limited to, those relating to reorganizations, litigation, conducting shareholder meetings, and liquidations) in order to prevent total annual fund operating expenses from exceeding 1.45% of the Fund's average daily net assets from May 2, 2016 through May 2, 2017 for all share classes other than Class R6, and 1.32% of the Fund's Class R6 shares' average daily net assets from May 2, 2016 and May 2, 2017. These waivers and reimbursements may only be terminated by agreement of the Manager and the Fund.
[5] Class C shares redeemed within one year of purchase are subject to a 1.00% contingent deferred sales charge (CDSC).
[6] "Other expenses" for Class R6 are estimated and account for Class R6 shares not being subject to certain expenses as described further in the section of the prospectus entitled "Choosing a share class."
[7] The Fund's investment manager, Delaware Management Company (Manager), has contractually agreed to waive all or a portion of its investment advisory fees and/or pay/reimburse expenses (excluding any 12b-1 fees, acquired fund fees and expenses, taxes, interest, short sale and dividend interest expenses, brokerage fees, certain insurance costs, and nonroutine expenses or costs, including, but not limited to, those relating to reorganizations, litigation, conducting shareholder meetings, and liquidations) in order to prevent total annual fund operating expenses from exceeding 1.30% of the Fund's average daily net assets from May 2, 2016 through May 2, 2017. These waivers and reimbursements may only be terminated by agreement of the Manager and the Fund.
[8] The Fund's investment manager, Delaware Management Company (Manager), has contractually agreed to waive all or a portion of its investment advisory fees and/or pay/reimburse expenses (excluding any 12b-1 fees, acquired fund fees and expenses, taxes, interest, short sale and dividend interest expenses, brokerage fees, certain insurance costs, and nonroutine expenses or costs, including, but not limited to, those relating to reorganizations, litigation, conducting shareholder meetings, and liquidations) in order to prevent total annual fund operating expenses from exceeding 1.21% of the Fund's average daily net assets from May 2, 2016 through May 2, 2017. These waivers and reimbursements may only be terminated by agreement of the Manager and the Fund.