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EQUITY ORIENTED | Macquarie Emerging Markets Portfolio  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return, Heading rr_RiskReturnHeading Macquarie Emerging Markets Portfolio
Investment Objective, Heading rr_ObjectiveHeading What is the Portfolio’s investment objective?
Investment Objective, Primary rr_ObjectivePrimaryTextBlock

Macquarie Emerging Markets Portfolio seeks long-term capital appreciation.
Expense, Heading rr_ExpenseHeading What are the Portfolio’s fees and expenses?
Expense, Narrative rr_ExpenseNarrativeTextBlock

The table below describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.
Shareholder Fees, Caption rr_ShareholderFeesCaption Shareholder fees (fees paid directly from your investment)
Operating Expenses, Caption rr_OperatingExpensesCaption Annual portfolio operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover, Heading rr_PortfolioTurnoverHeading Portfolio turnover
Portfolio Turnover rr_PortfolioTurnoverTextBlock

The Portfolio 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 Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 33% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 33.00%
Expense Example, Heading rr_ExpenseExampleHeading Example
Expense Example, Narrative rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Portfolio 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 that the Portfolio’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Investment Strategy, Heading rr_StrategyHeading What are the Portfolio’s principal investment strategies?
Investment Strategy, Narrative rr_StrategyNarrativeTextBlock

Macquarie Emerging Markets Portfolio is an international fund. The Portfolio generally invests in equity securities of companies organized in, having a majority of their assets in, or deriving a majority of their operating income from, emerging countries. Equity securities include, but are not limited to, common stocks, preferred stocks, convertible securities, certain nontraditional equity securities, and warrants. To the extent that this Portfolio invests in convertible debt securities, those securities will be purchased on the basis of their equity characteristics, and ratings of those securities, if any, will not be an important factor in their selection.

Under normal circumstances, the Portfolio will invest at least 80% of its net assets, plus any borrowings for investment purposes, in investments of emerging market issuers (80% Policy). The Portfolio’s 80% Policy may be changed without shareholder approval. However, shareholders will be given notice at least 60 days prior to any such change. Under normal circumstances, the Portfolio will invest at least 40% of its total assets in securities of non-US issuers. This policy is in addition to the 80% Policy.

The Portfolio considers an “emerging country” to be any country that is generally recognized to be an emerging or developing country by the international financial community, including the World Bank and the International Finance Corporation, as well as countries that are classified by the United Nations as developing. In addition, any country that is included in the International Finance Corporation Free Index or MSCI Emerging Markets Index will be considered to be an “emerging country.” There are more than 130 countries that are generally considered to be emerging or developing countries by the international financial community, approximately 40 of which currently have stock markets. Almost every nation in the world is included within this group of developing or emerging countries except the US, Canada, Japan, Australia, New Zealand, and nations located in Western Europe.

The Portfolio will focus its investments in those emerging countries where the Portfolio’s portfolio managers consider the economies to be developing strongly and where the markets are becoming more sophisticated. Currently, investing in many other emerging countries is not feasible, or may, in the portfolio managers’ opinion, involve unacceptable political risks. The portfolio managers believe that investment opportunities may result from an evolving long-term international trend favoring more market-oriented economies, a trend that may particularly benefit certain countries having developing markets. This trend may be facilitated by local or international political, economic, or financial developments that could benefit the capital markets in such countries.

In considering possible emerging countries in which the Portfolio may invest, the portfolio managers will place particular emphasis on factors such as economic conditions (including growth trends, inflation rates, and trade balances), regulatory and currency controls, accounting standards, and political and social conditions. The portfolio managers currently anticipate that the countries in which the Portfolio may invest will include, among others, Argentina, Brazil, Chile, China, Colombia, Croatia, the Czech Republic, Egypt, Estonia, Ghana, Greece, Hong Kong, Hungary, India, Indonesia, Jordan, Kazakhstan, Kenya, Malaysia, Mexico, Morocco, North Korea, Pakistan, Panama, Peru, the Philippines, Poland, Qatar, Romania, Russia, Saudi Arabia, Slovenia, South Africa, South Korea, Sri Lanka, Taiwan, Thailand, Turkey, Ukraine, United Arab Emirates, Venezuela, Vietnam, and Zimbabwe. As markets in other emerging countries develop, the portfolio managers expect to expand and further diversify the countries in which the Portfolio invests.

Although this is not an exhaustive list, the portfolio managers consider an emerging country equity security to be one that is issued by a company that exhibits one or more of the following characteristics: (1) its principal securities trading market is in an emerging country, as defined above; (2) while traded in any market, alone or on a consolidated basis, the company derives 50% or more of its annual revenues from either goods produced, sales made or services performed in emerging countries; or (3) it is organized under the laws of, and has a principal office in, an emerging country. The portfolio managers will determine eligibility based on publicly available information and inquiries made of the companies.

The Portfolio may invest in securities issued in any currency and may hold foreign currency. Securities of issuers within a given country may be denominated in the currency of another country or in multinational currency units, including the euro. For temporary defensive purposes, the Portfolio may invest all or a substantial portion of its assets in high-quality debt instruments.

Currency considerations carry a special risk for a portfolio of international securities. The portfolio managers use a purchasing power parity approach to evaluate currency risk. In this regard, the Portfolio may actively carry on hedging activities, and may invest in forward foreign currency contracts to hedge currency risks associated with the purchase of individual securities denominated in a particular currency.
Strategy Portfolio Concentration rr_StrategyPortfolioConcentration Under normal circumstances, the Portfolio will invest at least 80% of its net assets, plus any borrowings for investment purposes, in investments of emerging market issuers (80% Policy).
Risk, Heading rr_RiskHeading What are the principal risks of investing in the Portfolio?
Risk, Narrative 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 Portfolio will increase and decrease according to changes in the value of the securities in its portfolio. The Portfolio’s principal risks include:

Risk Definition
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 and emerging
markets risk		 The risk that international investing (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. The risk associated with international investing will be greater in emerging markets than in more developed foreign markets because, among other things, emerging markets may have less stable political and economic environments. In addition, there often is substantially less publicly available information about issuers and such information tends to be of a lesser quality. Economic markets and structures tend to be less mature and diverse and the securities markets may also be smaller, less liquid, and subject to greater price volatility.
Foreign government/
supranational securities risk		 The risk that a foreign government or government-related issuer may be unable to make timely payments on its external debt obligations.
Derivatives risk Derivatives contracts, such as futures, forward foreign currency contracts, options, and swaps, may involve additional expenses (such as the payment of premiums) and are subject to significant loss if a security, index, reference rate, or other asset or market factor to which a derivatives contract is associated, moves in the opposite direction from what the portfolio manager anticipated. When used for hedging, the change in value of the derivatives instrument may also not correlate specifically with the currency, rate, or other risk being hedged, in which case a portfolio may not realize the intended benefits. Derivatives contracts are also subject to the risk that the counterparty may fail to perform its obligations under the contract due to, among other reasons, financial difficulties (such as a bankruptcy or reorganization).
Credit risk The risk that an issuer of a debt security, including a governmental issuer, or an entity that insures a bond may be unable to make interest payments and/or repay principal in a timely manner.
Interest rate risk The risk that securities will decrease in value if interest rates rise. The risk is generally associated with bonds; however, because small- and medium-sized companies and companies in the real estate sector often borrow money to finance their operations, they may be adversely affected by rising interest rates. A portfolio may be subject to a greater risk of rising interest rates due to the current period of historically low interest rates.
Liquidity risk The possibility that securities cannot be readily sold within seven calendar days at approximately the price at which a portfolio has valued them.
Industry and sector risk The risk that the value of securities in a particular industry or sector (such as financials) will decline because of changing expectations for the performance of that industry or sector.
Active management and
selection risk		 The risk that the securities selected by a portfolio’s management will underperform the markets, the relevant indices, or the securities selected by other portfolios with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.

The Manager is an indirect wholly owned subsidiary of Macquarie Group Limited (MGL). Other than Macquarie Bank Limited (MBL), a subsidiary of MGL and an affiliate of the Manager, none of the entities noted 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 MBL. MBL does not guarantee or otherwise provide assurance in respect of the obligations of these entities, unless noted otherwise. The Portfolio is governed by US laws and regulations.
Risk, Lose Money 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 Portfolio will increase and decrease according to changes in the value of the securities in its portfolio.
Bar Chart and Performance Table, Heading rr_BarChartAndPerformanceTableHeading How has Macquarie Emerging Markets Portfolio performed?
Performance, Narrative rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risks of investing in the Portfolio by showing changes in the Portfolio’s performance from year to year and by showing how the Portfolio’s average annual total returns for the 1-, 5-, and 10-year periods compare with those of a broad measure of market performance. The Portfolio’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 Portfolio’s most recently available month-end performance by calling 800 231-8002 or by visiting our website at macquarieim.com/investments/products/macquarie-institutional-portfolios.
Performance, Information Illustrates Variability of Returns rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table below provide some indication of the risks of investing in the Portfolio by showing changes in the Portfolio’s performance from year to year and by showing how the Portfolio’s average annual total returns for the 1-, 5-, and 10-year periods compare with those of a broad measure of market performance.
Performance Availability Phone rr_PerformanceAvailabilityPhone 800 231-8002
Performance Availability Website Address rr_PerformanceAvailabilityWebSiteAddress macquarieim.com/investments/products/macquarie-institutional-portfolios
Performance Past Does Not Indicate Future rr_PerformancePastDoesNotIndicateFuture The Portfolio’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Bar Chart Heading rr_BarChartHeading Calendar year-by-year total return (Macquarie Emerging Markets Portfolio)
Bar Chart, Closing rr_BarChartClosingTextBlock

During the periods illustrated in this bar chart, Macquarie Emerging Markets Portfolio’s highest quarterly return was 18.47% for the quarter ended Sept. 30, 2010 and its lowest quarterly return was -18.40% for the quarter ended Sept. 30, 2011.
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest quarterly return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2010
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 18.47%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest quarterly return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (18.40%)
Performance Table Heading rr_PerformanceTableHeading Average annual total returns for periods ended December 31, 2019
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 Portfolio’s lifetime 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-advantaged investment vehicles such as employer-sponsored 401(k) plans and individual retirement accounts (IRAs).
Performance Table, Closing rr_PerformanceTableClosingTextBlock

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-advantaged 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 Portfolio’s lifetime and do not reflect the impact of state and local taxes.
EQUITY ORIENTED | Macquarie Emerging Markets Portfolio | MSCI Emerging Markets Index (net returns) (reflects no deduction for fees or expenses)  
Risk/Return: rr_RiskReturnAbstract  
Index No Deduction for Fees, Expenses, Taxes rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees or expenses)
1 year rr_AverageAnnualReturnYear01 18.42%
5 years rr_AverageAnnualReturnYear05 5.61%
10 years rr_AverageAnnualReturnYear10 3.68%
EQUITY ORIENTED | Macquarie Emerging Markets Portfolio | MSCI Emerging Markets Index (gross returns) (reflects no deduction for fees, expenses, or taxes)  
Risk/Return: rr_RiskReturnAbstract  
Index No Deduction for Fees, Expenses, Taxes rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses, or taxes)
1 year rr_AverageAnnualReturnYear01 18.88%
5 years rr_AverageAnnualReturnYear05 6.01%
10 years rr_AverageAnnualReturnYear10 4.04%
EQUITY ORIENTED | Macquarie Emerging Markets Portfolio | DPT CLASS  
Risk/Return: rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DPEMX
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
Purchase reimbursement fees rr_ExchangeFeeOverRedemption 0.40% [1]
Redemption reimbursement fees rr_RedemptionFeeOverRedemption 0.45% [1]
Management fees rr_ManagementFeesOverAssets 1.00%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.30%
Total annual portfolio operating expenses rr_ExpensesOverAssets 1.30%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets 0.03% [2]
Total annual portfolio operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.27%
1 year rr_ExpenseExampleYear01 $ 215
3 years rr_ExpenseExampleYear03 497
5 years rr_ExpenseExampleYear05 801
10 years rr_ExpenseExampleYear10 1,663
1 year rr_ExpenseExampleNoRedemptionYear01 169
3 years rr_ExpenseExampleNoRedemptionYear03 448
5 years rr_ExpenseExampleNoRedemptionYear05 747
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,599
Annual Return 2010 rr_AnnualReturn2010 17.59%
Annual Return 2011 rr_AnnualReturn2011 (11.86%)
Annual Return 2012 rr_AnnualReturn2012 21.94%
Annual Return 2013 rr_AnnualReturn2013 (7.58%)
Annual Return 2014 rr_AnnualReturn2014 (0.86%)
Annual Return 2015 rr_AnnualReturn2015 (16.35%)
Annual Return 2016 rr_AnnualReturn2016 8.80%
Annual Return 2017 rr_AnnualReturn2017 26.57%
Annual Return 2018 rr_AnnualReturn2018 (13.63%)
Annual Return 2019 rr_AnnualReturn2019 16.86%
1 year rr_AverageAnnualReturnYear01 16.86%
5 years rr_AverageAnnualReturnYear05 3.06%
10 years rr_AverageAnnualReturnYear10 3.02%
EQUITY ORIENTED | Macquarie Emerging Markets Portfolio | DPT CLASS | After Taxes on Distributions  
Risk/Return: rr_RiskReturnAbstract  
1 year rr_AverageAnnualReturnYear01 16.42%
5 years rr_AverageAnnualReturnYear05 2.44%
10 years rr_AverageAnnualReturnYear10 2.20%
EQUITY ORIENTED | Macquarie Emerging Markets Portfolio | DPT CLASS | After Taxes on Distributions and Sales  
Risk/Return: rr_RiskReturnAbstract  
1 year rr_AverageAnnualReturnYear01 10.48%
5 years rr_AverageAnnualReturnYear05 2.35%
10 years rr_AverageAnnualReturnYear10 2.49%
[1] The purchase reimbursement fees and redemption reimbursement fees are paid to the Portfolio. These fees are designed to reflect an approximation of the brokerage and other transaction costs associated with the investment of an investor's purchase amount or the disposition of assets to meet redemptions, and to limit the extent to which the Portfolio (and, indirectly, the Portfolio's existing shareholders) would have to bear such costs. In lieu of the reimbursement fees, investors in Macquarie Emerging Markets Portfolio may be permitted to utilize alternative purchase and redemption methods designed to accomplish the same economic effect as the reimbursement fees.
[2] The Portfolio'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, expenses, short sale dividend and 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 portfolio operating expenses from exceeding 1.27% of the Portfolio's average daily net assets from Feb. 28, 2020 through Mar. 1, 2021. The waivers and reimbursements may only be terminated by agreement of the Manager and the Portfolio.