v3.24.3
Label Element Value
Prospectus [Line Items] rr_ProspectusLineItems  
SEC Form dei_DocumentType 485BPOS
Period end date dei_DocumentPeriodEndDate Jul. 31, 2024
Registrant Name dei_EntityRegistrantName DELAWARE GROUP GOVERNMENT FUND
Registrant CIK dei_EntityCentralIndexKey 0000769220
Investment Company Type dei_EntityInvCompanyType N-1A
Amendment Flag dei_AmendmentFlag false
Prospectus #1  
Prospectus [Line Items] rr_ProspectusLineItems  
Prospectus Date rr_ProspectusDate Nov. 29, 2024
Risk/Return rr_RiskReturnHeading Prospectus
Prospectus #1 | Delaware Emerging Markets Debt Corporate Fund  
Prospectus [Line Items] rr_ProspectusLineItems  
Objective rr_ObjectiveHeading What are the Fund’s investment objectives?
Objective, Primary rr_ObjectivePrimaryTextBlock

Delaware Emerging Markets Debt Corporate Fund primarily seeks current income and, secondarily, capital appreciation.
Expense rr_ExpenseHeading What are the Fund’s fees and expenses?
Expense Narrative rr_ExpenseNarrativeTextBlock

The table below describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales-charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in Delaware Funds by Macquarie® (to be renamed Macquarie Funds on or about December 31, 2024). 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.”

Shareholder Fees Caption rr_ShareholderFeesCaption Shareholder fees (fees paid directly from your investment)
Operating Expenses Caption rr_OperatingExpensesCaption Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover rr_PortfolioTurnoverHeading Portfolio turnover
Portfolio Turnover 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 94% of the average value of its portfolio.

Portfolio Turnover, Rate rr_PortfolioTurnoverRate 94.00%
Expense Breakpoint Discounts rr_ExpenseBreakpointDiscounts You may qualify for sales-charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in Delaware Funds by Macquarie® <span style="-sec-ix-redline:true">(to be renamed Macquarie Funds on or about December 31, 2024)</span>.
Expense Breakpoint, Minimum Investment Required rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 100,000
Expense Example rr_ExpenseExampleHeading Example
Expense Example Narrative 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. In addition, the example shows expenses for Class C shares, assuming those shares were not redeemed 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:
Strategy rr_StrategyHeading What are the Fund’s principal investment strategies?
Strategy Narrative rr_StrategyNarrativeTextBlock

Under normal circumstances, the Fund will invest at least 80% of its net assets, plus borrowings for investment purposes, in emerging markets corporate debt securities (80% policy). For purposes of the 80% policy, emerging markets corporate debt securities include those that are (1) economically tied to an emerging market country or countries, (2) issued or guaranteed by a company domiciled or conducting significant business activities in an emerging market country, or (3) derivatives or pooled structures (such as exchange-traded funds (ETFs)) that are linked to emerging markets corporate debt securities. Emerging market countries include those currently considered to be developing or emerging countries by the World Bank, the United Nations, the countries’ governments, or in the judgment of the Manager. These debt instruments will be denominated primarily in the currencies of members of the Organization for Economic Cooperation and Development (OECD) and in other emerging markets’ currencies and may include a significant percentage of high yield (junk) corporate bonds. While there is no percentage limit on the amount of the Fund’s assets that may be invested in high yield (junk) corporate bonds, the Manager generally expects that 50% of the Fund’s assets will be invested in high yield corporate bonds.

The Fund may also use a wide variety of derivatives instruments, including credit linked notes, interest rate, index and credit default swaps, forward foreign currency contracts, futures, and options. The Fund will use derivatives for both hedging and nonhedging purposes. For example, the Fund may invest in: futures and options to manage duration and for defensive purposes, such as to protect gains or hedge against potential losses in the Fund without actually selling a security, or to stay fully invested; forward foreign currency contracts to manage foreign currency exposure; interest rate swaps to neutralize the impact of interest rate changes; credit default swaps to hedge against a credit event, to gain exposure to certain securities or markets, or to enhance total return; and index swaps to enhance return or to effect diversification. The Manager may also establish short positions through derivatives in an attempt to isolate, manage, or reduce the risk of individual positions, or positions in the aggregate, or to take advantage of an anticipated deterioration in the creditworthiness of an issuer. The Fund may employ leverage, such as by entering into reverse repurchase transactions, to attempt to take advantage of or increase the total return of attractive investment opportunities.

In addition, the Manager may seek investment advice and recommendations from its affiliates: Macquarie Investment Management Austria Kapitalanlage AG (MIMAK), Macquarie Investment Management Europe Limited (MIMEL), and Macquarie Investment Management Global Limited (MIMGL) (together, the “Affiliated Sub-Advisors”). The Manager may also permit these Affiliated Sub-Advisors to execute Fund security trades on behalf of the Manager and exercise investment discretion for securities in certain markets where the Manager believes it will be beneficial to utilize an Affiliated Sub-Advisor's specialized market knowledge.

The 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.
Strategy Portfolio Concentration rr_StrategyPortfolioConcentration Under normal circumstances, the Fund will invest at least 80% of its net assets, plus borrowings for investment purposes, in emerging markets corporate debt securities (80% policy).
Risk rr_RiskHeading What are the principal risks of investing in the Fund?
Risk rr_RiskTextBlock

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. An investment in the Fund may not be appropriate for all investors. The Fund’s 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.

 

Interest rate risk — The risk that the prices of bonds and other fixed income securities will increase as interest rates fall and decrease as interest rates rise. Interest rate changes are influenced by a number of factors, such as government policy, monetary policy, inflation expectations, and the supply and demand of bonds. Bonds and other fixed income securities with longer maturities or duration generally are more sensitive to interest rate changes. A fund may be subject to a greater risk of rising interest rates when interest rates are low or inflation rates are high or rising.

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.

High yield (junk) bond risk — The risk that high yield securities, commonly known as “junk bonds,” are subject to reduced creditworthiness of issuers, increased risk of default, and a more limited and less liquid secondary market. High yield securities may also be subject to greater price volatility and risk of loss of income and principal than are higher-rated securities.

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.

Geographic focus risk — The risk that local political and economic conditions could adversely affect the performance of a fund investing a substantial amount of assets in securities of issuers located in a single country or a limited number of countries.

Industry and sector risk — The risk that the value of securities in a particular industry or sector (such as banking or energy) will decline because of changing expectations for the performance of that industry or sector.

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 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 fund 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).

Leveraging risk — The risk that certain fund transactions, such as reverse repurchase agreements, short sales, loans of fund securities, and the use of when-issued, delayed delivery or forward commitment transactions, or derivatives instruments, may give rise to leverage, causing a fund to be more volatile than if it had not been leveraged, which may result in increased losses to the fund.

Portfolio turnover risk — High portfolio turnover rates may increase a fund’s transaction costs and lower returns.

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

Active management and selection risk — The risk that the securities selected by a fund’s management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.

None of the entities noted in this document is an authorized deposit-taking institution for the purposes of the Banking Act 1959 (Commonwealth of Australia) and the obligations of these entities do not represent deposits or other liabilities of Macquarie Bank Limited ABN 46 008 583 542 (Macquarie Bank). Macquarie Bank does not guarantee or otherwise provide assurance in respect of the obligations of these entities. In addition, if this document relates to an investment (a) each investor is subject to investment risk including possible delays in repayment and loss of income and principal invested and (b) none of Macquarie Bank or any other Macquarie Group company guarantees any particular rate of return on or the performance of the investment, nor do they guarantee repayment of capital in respect of the investment.
Risk Closing rr_RiskClosingTextBlock

None of the entities noted in this document is an authorized deposit-taking institution for the purposes of the Banking Act 1959 (Commonwealth of Australia) and the obligations of these entities do not represent deposits or other liabilities of Macquarie Bank Limited ABN 46 008 583 542 (Macquarie Bank). Macquarie Bank does not guarantee or otherwise provide assurance in respect of the obligations of these entities. In addition, if this document relates to an investment (a) each investor is subject to investment risk including possible delays in repayment and loss of income and principal invested and (b) none of Macquarie Bank or any other Macquarie Group company guarantees any particular rate of return on or the performance of the investment, nor do they guarantee repayment of capital in respect of the investment.
Bar Chart and Performance Table rr_BarChartAndPerformanceTableHeading How has Delaware Emerging Markets Debt Corporate Fund performed?
Performance Narrative 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 and an additional index with characteristics relevant to the Fund.

 

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 delawarefunds.com/performance.
Performance Information Illustrates Variability of Returns rr_PerformanceInformationIllustratesVariabilityOfReturns 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 <span style="-sec-ix-redline:true"> and an additional index with characteristics relevant to the Fund</span>.
Performance Availability Phone rr_PerformanceAvailabilityPhone 800 523-1918
Performance Availability Website Address rr_PerformanceAvailabilityWebSiteAddress delawarefunds.com/performance
Performance Past Does Not Indicate Future rr_PerformancePastDoesNotIndicateFuture 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.
Bar Chart Closing rr_BarChartClosingTextBlock

As of September 30, 2024, the Fund’s Class A shares had a calendar year-to-date return of 8.36%. During the periods illustrated in this bar chart, Class A’s highest quarterly return was 13.40% for the quarter ended June 30, 2020, and its lowest quarterly return was -14.85% for the quarter ended March 31, 2020.  The maximum Class A sales charge of 4.50%, 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 Market Index Changed rr_PerformanceTableMarketIndexChanged In connection with new regulatory requirements, effective July 31, 2024, the Fund changed its broad-based securities market benchmark index from the J.P. Morgan Corporate Emerging Markets Bond Index Broad Diversified to the Bloomberg Global Aggregate Bond Index.
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-advantaged investment vehicles such as employer-sponsored 401(k) plans and individual retirement accounts (IRAs).
Performance Table One Class of after Tax Shown rr_PerformanceTableOneClassOfAfterTaxShown After-tax performance is presented only for Class A shares of the Fund.
Performance Table Closing 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-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 periods presented and do not reflect the impact of state and local taxes.

Average Annual Return, Caption rr_AverageAnnualReturnCaption <b>Average annual total returns for periods ended December 31, <span style="-sec-ix-redline:true">2023</span></b>
Prospectus #1 | Delaware Emerging Markets Debt Corporate Fund | Risk Lose Money  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk rr_RiskTextBlock 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.
Prospectus #1 | Delaware Emerging Markets Debt Corporate Fund | Risk Not Insured Depository Institution  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk rr_RiskTextBlock An investment in the Fund may not be appropriate for all investors.
Prospectus #1 | Delaware Emerging Markets Debt Corporate Fund | Bloomberg Global Aggregate Bond Index  
Prospectus [Line Items] rr_ProspectusLineItems  
Index No Deduction for Fees, Expenses, Taxes rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses, or taxes)
1 year rr_AverageAnnualReturnYear01 5.72%
5 years rr_AverageAnnualReturnYear05 (0.32%)
10 years rr_AverageAnnualReturnYear10 0.38%
Prospectus #1 | Delaware Emerging Markets Debt Corporate Fund | J.P. Morgan Corporate Emerging Markets Bond Index Broad Diversified  
Prospectus [Line Items] rr_ProspectusLineItems  
Index No Deduction for Fees, Expenses, Taxes rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses, or taxes)
1 year rr_AverageAnnualReturnYear01 9.08%
5 years rr_AverageAnnualReturnYear05 3.19%
10 years rr_AverageAnnualReturnYear10 3.77%
Prospectus #1 | Delaware Emerging Markets Debt Corporate Fund | Class A  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol DEDAX
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 4.50%
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower} rr_MaximumDeferredSalesChargeOverOfferingPrice none [1]
Management fees rr_ManagementFeesOverAssets 0.75%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.26%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 1.27% [3]
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.22%) [4]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.05%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 552
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 814
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,095
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,896
Annual Return Caption rr_AnnualReturnCaption Calendar year-by-year total return (Class A)
2014 rr_AnnualReturn2014 1.44%
2015 rr_AnnualReturn2015 (2.33%)
2016 rr_AnnualReturn2016 10.97%
2017 rr_AnnualReturn2017 12.20%
2018 rr_AnnualReturn2018 (4.96%)
2019 rr_AnnualReturn2019 15.39%
2020 rr_AnnualReturn2020 6.17%
2021 rr_AnnualReturn2021 0.41%
2022 rr_AnnualReturn2022 (10.83%)
2023 rr_AnnualReturn2023 8.45%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2024
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 8.36%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest quarterly return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2020
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 13.40%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest quarterly return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (14.85%)
1 year rr_AverageAnnualReturnYear01 3.52%
5 years rr_AverageAnnualReturnYear05 2.59%
10 years rr_AverageAnnualReturnYear10 2.92%
Prospectus #1 | Delaware Emerging Markets Debt Corporate Fund | Class A | After Taxes on Distributions  
Prospectus [Line Items] rr_ProspectusLineItems  
1 year rr_AverageAnnualReturnYear01 1.37%
5 years rr_AverageAnnualReturnYear05 0.81%
10 years rr_AverageAnnualReturnYear10 0.99%
Prospectus #1 | Delaware Emerging Markets Debt Corporate Fund | Class A | After Taxes on Distributions and Sales  
Prospectus [Line Items] rr_ProspectusLineItems  
1 year rr_AverageAnnualReturnYear01 2.02%
5 years rr_AverageAnnualReturnYear05 1.23%
10 years rr_AverageAnnualReturnYear10 1.38%
Prospectus #1 | Delaware Emerging Markets Debt Corporate Fund | Class C  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol DEDCX
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% [1]
Management fees rr_ManagementFeesOverAssets 0.75%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.26%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 2.02% [3]
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.22%) [4]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.80%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 283
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 612
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,068
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,330
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 183
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 612
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,068
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,330
1 year rr_AverageAnnualReturnYear01 6.66%
5 years rr_AverageAnnualReturnYear05 2.76%
10 years rr_AverageAnnualReturnYear10 2.82%
Prospectus #1 | Delaware Emerging Markets Debt Corporate Fund | Institutional Class  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol DEDIX
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 0.75%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.26%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 1.02% [3]
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.22%) [4]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 0.80%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 82
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 303
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 542
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,228
1 year rr_AverageAnnualReturnYear01 8.73%
5 years rr_AverageAnnualReturnYear05 3.76%
10 years rr_AverageAnnualReturnYear10 3.57%
Prospectus #2  
Prospectus [Line Items] rr_ProspectusLineItems  
Prospectus Date rr_ProspectusDate Nov. 29, 2024
Risk/Return rr_RiskReturnHeading Prospectus
Prospectus #2 | Delaware Strategic Income Fund  
Prospectus [Line Items] rr_ProspectusLineItems  
Objective rr_ObjectiveHeading <b>What <span style="-sec-ix-redline:true">are</span> the Fund’s investment <span style="-sec-ix-redline:true">objectives</span>?</b>
Objective, Primary rr_ObjectivePrimaryTextBlock

Delaware Strategic Income Fund seeks high current income and, secondarily, long-term total return.
Expense rr_ExpenseHeading What are the Fund’s fees and expenses?
Expense Narrative rr_ExpenseNarrativeTextBlock

The table below describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales-charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in Delaware Funds by Macquarie® (to be renamed Macquarie Funds on or about December 31, 2024). 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.”

Shareholder Fees Caption rr_ShareholderFeesCaption Shareholder fees (fees paid directly from your investment)
Operating Expenses Caption rr_OperatingExpensesCaption Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover rr_PortfolioTurnoverHeading Portfolio turnover
Portfolio Turnover 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 160% of the average value of its portfolio.

Portfolio Turnover, Rate rr_PortfolioTurnoverRate 160.00%
Expense Breakpoint Discounts rr_ExpenseBreakpointDiscounts You may qualify for sales-charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in Delaware Funds by Macquarie® <span style="-sec-ix-redline:true">(to be renamed Macquarie Funds on or about December 31, 2024)</span>.
Expense Breakpoint, Minimum Investment Required rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 100,000
Expense Example rr_ExpenseExampleHeading Example
Expense Example Narrative 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. In addition, the example shows expenses for Class C shares, assuming those shares were not redeemed 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:
Strategy rr_StrategyHeading What are the Fund’s principal investment strategies?
Strategy Narrative rr_StrategyNarrativeTextBlock

Under normal circumstances, the Fund will invest at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in US and foreign debt securities, including those in emerging markets (80% policy). Debt securities include all varieties of fixed, variable and floating rate income securities, including bonds, US and foreign government and agency securities, corporate loans (and loan participations), and mortgage-backed securities and other asset-backed securities. To achieve the Fund's investment objectives, the Manager will allocate investments among various sectors of debt securities and at any given time may have a substantial amount of its assets invested in any class of debt security.

In addition, the Manager may seek investment advice and recommendations from its affiliates: Macquarie Investment Management Austria Kapitalanlage AG (MIMAK), Macquarie Investment Management Europe Limited (MIMEL), and Macquarie Investment Management Global Limited (MIMGL) (together, the “Affiliated Sub-Advisors”). The Manager may also permit these Affiliated Sub-Advisors to execute Fund security trades on behalf of the Manager and exercise investment discretion for securities in certain markets where the Manager believes it will be beneficial to utilize an Affiliated Sub-Advisor's specialized market knowledge.

The Fund may invest up to 100% of its net assets in high yield, lower-quality debt securities (also known as “junk bonds”).

The Fund may invest up to 100% of its net assets in foreign securities, including emerging markets securities. The Fund’s total non-US dollar currency exposure may reach 100% of net assets. Due to the manner in which the Fund is managed, it may be subject to a high rate of portfolio turnover.

The Fund may hold a substantial portion of its assets in cash or short-term fixed income obligations in unusual market conditions to meet redemption requests, for temporary defensive purposes, and pending investment. The Fund may also use a wide range of derivatives instruments, typically including forward foreign currency contracts, options, futures contracts, options on futures contracts, and swaps. The Fund may use derivatives for both hedging and nonhedging purposes. For example, the Fund may invest in: futures and options to manage duration and for defensive purposes, such as to protect gains or hedge against potential losses in the portfolio without actually selling a security, or to stay fully invested; forward foreign currency contracts to manage foreign currency exposure; interest rate swaps to neutralize the impact of interest rate changes; credit default swaps to hedge against a credit event, to gain exposure to certain securities or markets, or to enhance total return; and index swaps to enhance return or to affect diversification.

The 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.
Strategy Portfolio Concentration rr_StrategyPortfolioConcentration Under normal circumstances, the <span style="-sec-ix-redline:true">Fund</span> will invest at least 80% of <span style="-sec-ix-redline:true">its</span> net assets, plus the amount of any borrowings for investment purposes, in US and foreign debt securities, including those in emerging markets (80% policy).
Risk rr_RiskHeading What are the principal risks of investing in the Fund?
Risk rr_RiskTextBlock

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. An investment in the Fund may not be appropriate for all investors. The Fund’s 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.

Interest rate risk — The risk that the prices of bonds and other fixed income securities will increase as interest rates fall and decrease as interest rates rise. Interest rate changes are influenced by a number of factors, such as government policy, monetary policy, inflation expectations, and the supply and demand of bonds. Bonds and other fixed income securities with longer maturities or duration generally are more sensitive to interest rate changes. A fund may be subject to a greater risk of rising interest rates when interest rates are low or inflation rates are high or rising.

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.

High yield (junk) bond risk — The risk that high yield securities, commonly known as “junk bonds,” are subject to reduced creditworthiness of issuers, increased risk of default, and a more limited and less liquid secondary market. High yield securities may also be subject to greater price volatility and risk of loss of income and principal than are higher-rated securities. High yield bonds are sometimes issued by municipalities that have less financial strength and therefore have less ability to make projected debt payments on the bonds.

 

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

Loans and other indebtedness risk — The risk that a fund will not receive payment of principal, interest, and other amounts due in connection with these investments and will depend primarily on the financial condition of the borrower and the lending institution. A fund’s ability to sell its loans or to realize their full value upon sale may also be impaired due to the lack of an active trading market, irregular trading activity, wide bid/ask spreads, contractual restrictions, and extended trade settlement periods. In addition, certain loans in which a fund invests may not be considered securities. A fund therefore may not be able to rely upon the anti-fraud provisions of the federal securities laws with respect to these investments.

Adjustable rate securities risk — During periods of rising interest rates, because changes in interest rates on adjustable rate securities may lag behind changes in market rates, the value of such securities may decline until their interest rates reset to market rates. During periods of declining interest rates, because the interest rates on adjustable rate securities generally reset downward, their market value is unlikely to rise to the same extent as the value of comparable fixed rate securities.

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.

Currency risk — The risk that fluctuations in exchange rates between the US dollar and foreign currencies and between various foreign currencies may cause the value of an investment to decline.

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 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 fund 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).

Leveraging risk — The risk that certain fund transactions, such as reverse repurchase agreements, short sales, loans of fund securities, and the use of when-issued, delayed delivery or forward commitment transactions, or derivatives instruments, may give rise to leverage, causing a fund to be more volatile than if it had not been leveraged, which may result in increased losses to the fund.

Mortgage-backed and asset-backed securities risk — Mortgage-backed and asset-backed securities, like other fixed income securities, are subject to credit risk and interest rate risk, and may also be subject to prepayment risk and extension risk. Prepayment risk is the risk that the principal on mortgage-backed or asset-backed securities may be prepaid at any time, which will reduce the yield and market value of the securities and may cause the fund to reinvest the proceeds in lower yielding securities. Extension risk is the risk that principal on mortgage-backed or asset-backed securities will be repaid more slowly than expected, which may reduce the proceeds available for reinvestment in higher yielding securities. In addition, mortgage-backed and asset-backed securities may decline in value, become more volatile, face difficulties in valuation, or experience reduced liquidity due to changes in interest rates or general economic conditions. Certain mortgage-backed or asset-backed securities, such as collateralized mortgage obligations, real estate mortgage investment conduits, and stripped mortgage-backed securities, may be more susceptible to these risks than other mortgage-backed, asset-backed, or fixed-income securities.

Collateralized loan obligation risk — The risks of investing in collateralized loan obligations (CLOs) include liquidity risk, interest rate risk, credit risk, prepayment risk, valuation risk, and the risk of default of the underlying asset, among others, and represent both the economic risks of the underlying loans held by the CLO as well as the risks associated with the CLO structure governing the priority of payments. The degree of such risk will generally correspond to the specific tranche in which the Fund is invested, with lower-rated CLO tranches often subordinate to higher-rated tranches in terms of payment priority and therefore subject to relatively greater risk. To the extent a CLO or its underlying loans experience default or are having difficulty making principal and/or interest payments, CLOs could experience losses due to actual defaults, market anticipation of defaults, or negative market sentiment toward CLO securities as an asset class. These risks may be exacerbated to the extent that a Fund invests in CLO securities that are rated below investment grade.

Prepayment risk — The risk that the principal on a bond that is held by a fund will be prepaid prior to maturity at a time when interest rates are lower than what that bond was paying. A fund may then have to reinvest that money at a lower interest rate.

 

Valuation risk — The risk that a less liquid secondary market may make it more difficult for a fund to obtain precise valuations of certain securities in its portfolio.

Portfolio turnover risk — High portfolio turnover rates may increase a fund’s transaction costs and lower returns.

US government securities risk — The risk that certain US government securities, such as securities issued by Fannie Mae, Freddie Mac and the Federal Home Loan Bank system (FHLB), are not backed by the “faith and credit” of the US government and, instead, may be supported only by the credit of the issuer or by the right of the issuer to borrow from the US Treasury.

Government and regulatory risk — The risk that governments or regulatory authorities may take actions that could adversely affect various sectors of the securities markets and affect fund performance.

Active management and selection risk — The risk that the securities selected by a fund’s management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.

None of the entities noted in this document is an authorized deposit-taking institution for the purposes of the Banking Act 1959 (Commonwealth of Australia) and the obligations of these entities do not represent deposits or other liabilities of Macquarie Bank Limited ABN 46 008 583 542 (Macquarie Bank). Macquarie Bank does not guarantee or otherwise provide assurance in respect of the obligations of these entities. In addition, if this document relates to an investment (a) each investor is subject to investment risk including possible delays in repayment and loss of income and principal invested and (b) none of Macquarie Bank or any other Macquarie Group company guarantees any particular rate of return on or the performance of the investment, nor do they guarantee repayment of capital in respect of the investment.
Risk Closing rr_RiskClosingTextBlock

None of the entities noted in this document is an authorized deposit-taking institution for the purposes of the Banking Act 1959 (Commonwealth of Australia) and the obligations of these entities do not represent deposits or other liabilities of Macquarie Bank Limited ABN 46 008 583 542 (Macquarie Bank). Macquarie Bank does not guarantee or otherwise provide assurance in respect of the obligations of these entities. In addition, if this document relates to an investment (a) each investor is subject to investment risk including possible delays in repayment and loss of income and principal invested and (b) none of Macquarie Bank or any other Macquarie Group company guarantees any particular rate of return on or the performance of the investment, nor do they guarantee repayment of capital in respect of the investment.
Bar Chart and Performance Table rr_BarChartAndPerformanceTableHeading How has Delaware Strategic Income Fund performed?
Performance Narrative 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.

On January 31, 2017, the Fund was repositioned as an income-oriented fund. The returns prior to January 31, 2017 do not reflect this change and accordingly, the performance shown in the bar chart and average annual total return table prior to that date may not be indicative of future returns.

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 delawarefunds.com/performance.
Performance Information Illustrates Variability of Returns rr_PerformanceInformationIllustratesVariabilityOfReturns 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.
Performance Availability Phone rr_PerformanceAvailabilityPhone 800 523-1918
Performance Availability Website Address rr_PerformanceAvailabilityWebSiteAddress delawarefunds.com/performance.
Performance Past Does Not Indicate Future rr_PerformancePastDoesNotIndicateFuture The <span style="-sec-ix-redline:true">Fund’s</span> past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Bar Chart Closing rr_BarChartClosingTextBlock

As of September 30, 2024, the Fund’s Class A shares had a calendar year-to-date return of 6.11%. During the periods illustrated in this bar chart, Class A’s highest quarterly return was 10.61% for the quarter ended June 30, 2020, and its lowest quarterly return was -9.60% for the quarter ended March 31, 2020.    The maximum Class A sales charge of 4.50%, 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 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-advantaged investment vehicles such as employer-sponsored 401(k) plans and individual retirement accounts (IRAs).
Performance Table One Class of after Tax Shown rr_PerformanceTableOneClassOfAfterTaxShown After-tax performance is presented only for Class A shares of the Fund.
Performance Table Closing 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-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 periods presented and do not reflect the impact of state and local taxes.

Average Annual Return, Caption rr_AverageAnnualReturnCaption <b>Average annual total returns for periods ended December 31, <span style="-sec-ix-redline:true">2023</span></b>
Prospectus #2 | Delaware Strategic Income Fund | Risk Lose Money  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk rr_RiskTextBlock 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.
Prospectus #2 | Delaware Strategic Income Fund | Risk Not Insured Depository Institution  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk rr_RiskTextBlock An investment in the Fund may not be appropriate for all investors.
Prospectus #2 | Delaware Strategic Income Fund | Bloomberg US Aggregate Bond Index  
Prospectus [Line Items] rr_ProspectusLineItems  
Index No Deduction for Fees, Expenses, Taxes rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses, or taxes)
1 year rr_AverageAnnualReturnYear01 5.53%
5 years rr_AverageAnnualReturnYear05 1.10%
10 years rr_AverageAnnualReturnYear10 1.81%
Prospectus #2 | Delaware Strategic Income Fund | Class A  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol DEGGX
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 4.50%
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower} rr_MaximumDeferredSalesChargeOverOfferingPrice none [5]
Management fees rr_ManagementFeesOverAssets 0.55%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.32%
Total annual fund operating expenses rr_ExpensesOverAssets 1.12%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.28%) [6]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 0.84%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 532
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 763
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,013
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,728
Annual Return Caption rr_AnnualReturnCaption Calendar year-by-year total return (Class A)
2014 rr_AnnualReturn2014 5.63%
2015 rr_AnnualReturn2015 (0.53%)
2016 rr_AnnualReturn2016 2.29%
2017 rr_AnnualReturn2017 5.90%
2018 rr_AnnualReturn2018 (4.74%)
2019 rr_AnnualReturn2019 12.04%
2020 rr_AnnualReturn2020 9.49%
2021 rr_AnnualReturn2021 1.15%
2022 rr_AnnualReturn2022 (10.51%)
2023 rr_AnnualReturn2023 9.26%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2024
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 6.11%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest quarterly return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2020
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 10.61%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest quarterly return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (9.60%)
1 year rr_AverageAnnualReturnYear01 4.33%
5 years rr_AverageAnnualReturnYear05 2.99%
10 years rr_AverageAnnualReturnYear10 2.31%
Prospectus #2 | Delaware Strategic Income Fund | Class A | After Taxes on Distributions  
Prospectus [Line Items] rr_ProspectusLineItems  
1 year rr_AverageAnnualReturnYear01 2.22%
5 years rr_AverageAnnualReturnYear05 1.30%
10 years rr_AverageAnnualReturnYear10 0.77%
Prospectus #2 | Delaware Strategic Income Fund | Class A | After Taxes on Distributions and Sales  
Prospectus [Line Items] rr_ProspectusLineItems  
1 year rr_AverageAnnualReturnYear01 2.50%
5 years rr_AverageAnnualReturnYear05 1.56%
10 years rr_AverageAnnualReturnYear10 1.08%
Prospectus #2 | Delaware Strategic Income Fund | Class C  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol DUGCX
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 0.55%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.32%
Total annual fund operating expenses rr_ExpensesOverAssets 1.87%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.28%) [6]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.59%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 262
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 561
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 985
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,168
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 162
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 561
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 985
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,168
1 year rr_AverageAnnualReturnYear01 7.45%
5 years rr_AverageAnnualReturnYear05 3.14%
10 years rr_AverageAnnualReturnYear10 2.00%
Prospectus #2 | Delaware Strategic Income Fund | Class R  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol DUGRX
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 0.55%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other expenses rr_OtherExpensesOverAssets 0.32%
Total annual fund operating expenses rr_ExpensesOverAssets 1.37%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.28%) [6]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 1.09%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 111
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 406
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 723
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,622
1 year rr_AverageAnnualReturnYear01 9.13%
5 years rr_AverageAnnualReturnYear05 3.66%
10 years rr_AverageAnnualReturnYear10 2.52%
Prospectus #2 | Delaware Strategic Income Fund | Institutional Class  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol DUGIX
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 0.55%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.32%
Total annual fund operating expenses rr_ExpensesOverAssets 0.87%
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.28%) [6]
Total annual fund operating expenses after fee waivers and expense reimbursements rr_NetExpensesOverAssets 0.59%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 60
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 250
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 455
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,047
1 year rr_AverageAnnualReturnYear01 9.68%
5 years rr_AverageAnnualReturnYear05 4.20%
10 years rr_AverageAnnualReturnYear10 3.04%
[1] For Class A shares, a 1% contingent deferred sales charge (CDSC) is only imposed on certain Class A shares that are purchased at net asset value (NAV) for $1 million or more that are subsequently redeemed within 18 months of purchase. For Class C shares, a 1% CDSC applies to redemptions within 12 months of purchase.
[2] Acquired fund fees and expenses sets forth the Fund's pro rata portion of the cumulative expenses charged by the registered investment companies (RICs) in which the Fund invested during the last fiscal year. The actual acquired fund fees and expenses will vary with changes in the allocations of the Fund's assets. The acquired fund fees and expenses shown are based on the total expense ratio of the RICs for the RICs' most recent fiscal period. These expenses are not direct costs paid by Fund shareholders, and are not used to calculate the Fund's NAV.
[3] The Total annual fund operating expenses ratio shown above does not correlate to the expense ratio shown in the Financial Highlights table because that ratio does not include the acquired fund fees and expenses.
[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 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 fund operating expenses from exceeding 0.79% of the Fund’s average daily net assets from November 29, 2024 through November 28, 2025. These waivers and reimbursements may only be terminated by agreement of the Manager and the Fund.
[5] For Class A shares, a 1% contingent deferred sales charge (CDSC) is only imposed on certain Class A shares that are purchased at net asset value (NAV) for $1 million or more that are subsequently redeemed within 18 months of purchase. For Class C shares, a 1% CDSC applies to redemptions within 12 months of purchase.
[6] 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 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 fund operating expenses from exceeding 0.59% of the Fund’s average daily net assets from November 29, 2024 through November 28, 2025. These waivers and reimbursements may only be terminated by agreement of the Manager and the Fund. Additionally, the Fund’s Class A shares are subject to a blended 12b-1 fee of 0.10% on all shares acquired prior to June 1, 1992, and 0.25% on all shares acquired on or after June 1, 1992. All Class A shares currently bear 12b-1 fees at the same rate, the blended rate based on the formula described above. This method of calculating Class A 12b-1 fees may be discontinued at the sole discretion of the Fund’s Board of Trustees (Board).