Label	Element	Value
Risk/Return:	dglt_RiskReturn1Abstract
Document Type	dei_DocumentType	497
Document Period End Date	dei_DocumentPeriodEndDate	Dec. 31, 2018
Registrant Name	dei_EntityRegistrantName	DELAWARE GROUP LIMITED-TERM GOVERNMENT FUNDS
Central Index Key	dei_EntityCentralIndexKey	0000357059
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Jun. 28, 2019
Document Effective Date	dei_DocumentEffectiveDate	Jun. 28, 2019
Prospectus Date	rr_ProspectusDate	Apr. 30, 2019
Entity Inv Company Type	dei_EntityInvCompanyType	N-1A
Delaware Limited-Term Diversified Income Fund
Risk/Return:	dglt_RiskReturn1Abstract
Supplement to Prospectus	rr_SupplementToProspectusTextBlock	DELAWARE GROUP^® LIMITED-TERM GOVERNMENT FUNDS Delaware Limited-Term Diversified Income Fund (the “Fund”) Supplement to the current Statutory Prospectus (the “Prospectus”) and Statement of Additional Information (the “SAI”) The Board of Trustees (“Trustees” or “Board”) of Delaware Group Government Fund (the “Trust”) approved the appointment of Macquarie Investment Management Austria Kapitalanlage AG (“MIMAK”), Macquarie Investment Management Europe Limited (“MIMEL”), and Macquarie Investment Management Global Limited (“MIMGL”) to serve as sub-advisors and provide certain sub-advisory services to the Fund from time to time at the discretion of Delaware Management Company (the “Manager”). In connection therewith, the following replaces the information in the section of the Fund’s Prospectus entitled “Fund summary — What are the Fund’s principal investment strategies?”: Under normal circumstances, the Fund will invest at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in investment grade fixed income securities, including, but not limited to, fixed income securities issued or guaranteed by the US government, its agencies or instrumentalities, and by US corporations (80% policy). Investment grade fixed income securities are securities rated BBB- or higher by Standard & Poor’s Financial Services LLC (S&P) and Baa3 or higher by Moody’s Investors Service, Inc. (Moody’s), or similarly rated by another nationally recognized statistical rating organization (NRSRO), or those that are deemed to be of comparable quality. The Fund will maintain an average effective duration from one to three years. The Fund’s investment manager, Delaware Management Company (Manager), will determine how much of the Fund’s assets to allocate among the different types of fixed income securities in which the Fund may invest based on the Manager’s evaluation of economic and market conditions and its assessment of the returns and potential for appreciation that can be achieved from various sectors of the fixed income market. In addition, the Manager may seek investment advice and recommendations from its affiliates: Macquarie Investment Management Europe Limited, Macquarie Investment Management Austria Kapitalanlage AG, and Macquarie Investment Management Global Limited (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 DMC believes it will be beneficial to utilize an Affiliated Sub-Advisor’s specialized market knowledge. The corporate debt obligations in which the Fund may invest include bonds, notes, debentures, and commercial paper of US companies and, subject to the limitations described below, non-US companies. The Fund may also invest in a variety of securities that are issued or guaranteed as to the payment of principal and interest by the US government, and by various agencies or instrumentalities, which have been established or are sponsored by the US government, and, subject to the limitations described below, securities issued by foreign governments. Additionally, the Fund may invest in mortgage-backed securities issued or guaranteed by the US government, its agencies or instrumentalities, government-sponsored corporations, and mortgage-backed securities issued by certain private, nongovernment entities. The Fund may also invest in securities that are backed by assets such as receivables on home equity and credit card loans, automobile, mobile home, recreational vehicle and other loans, wholesale dealer floor plans, and leases. The Fund may invest up to 20% of its net assets in below-investment-grade securities (also known as high yield or “junk” bonds). The Fund may also invest up to 30% of its net assets in foreign securities, including up to 10% of its net assets in securities of issuers located in emerging markets. The Fund’s total non-US dollar currency exposure will be limited, in the aggregate, to no more than 10% of its net assets. The Fund may use a wide range of derivatives instruments, typically including options, futures contracts, options on futures contracts, forward foreign currency contracts, and swaps. 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 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 effect diversification. The Fund will not use derivatives for reasons inconsistent with its investment objective and will limit its investments in derivatives instruments to 20% of its net assets. 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 following information is added into the section of the Fund’s Prospectus entitled “Fund summary — Who manages the Fund?”: Sub-advisors Macquarie Investment Management Austria Kapitalanlage AG Macquarie Investment Management Europe Limited Macquarie Investment Management Global Limited The following replaces the information in the section of the Fund's Prospectus entitled "How we manage the Fund — Our principal investment strategies”: The Manager analyzes economic and market conditions, seeking to identify the securities or market sectors that the Manager believes are the best investments for the Fund. Securities in which the Fund may invest include, but are not limited to, the following: •securities issued or guaranteed by the US government, such as US Treasurys; •securities issued by US government agencies or instrumentalities, such as securities of Ginnie Mae; •investment grade and below-investment-grade corporate bonds; nonagency mortgage-backed securities (MBS), asset-backed securities (ABS), commercial mortgage-backed securities (CMBS), collateralized mortgage obligations (CMOs), and real estate mortgage investment conduits (REMICs); •securities of foreign issuers in both developed and emerging markets, denominated in foreign currencies and US dollars; •bank loans; and •short-term investments. In addition, the Manager may seek investment advice and recommendations from its affiliates: Macquarie Investment Management Europe Limited, Macquarie Investment Management Austria Kapitalanlage AG, and Macquarie Investment Management Global Limited (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 DMC believes it will be beneficial to utilize an Affiliated Sub-Advisor’s specialized market knowledge. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in investment grade fixed income securities. The Fund may invest in debt obligations issued or guaranteed by the US government, its agencies or instrumentalities, and by US corporations. The corporate debt obligations in which the Fund may invest include bonds, notes, debentures, and commercial paper of US companies. The US government securities in which the Fund may invest include a variety of securities that are issued or guaranteed as to the payment of principal and interest by the US government, and by various agencies or instrumentalities, which have been established or are sponsored by the US government. The Fund may also invest in MBS issued or guaranteed by the US government, its agencies or instrumentalities, or by government-sponsored corporations. Other MBS in which the Fund may invest are issued by certain private, nongovernment entities. The Fund may also invest in securities that are backed by assets such as receivables on home equity and credit card loans, automobile, mobile home, recreational vehicle and other loans, wholesale dealer floor plans, and leases. The Fund maintains an average effective duration from one to three years. The Fund may also invest up to 20% of its net assets in below-investment-grade securities (commonly known as high yield or “junk bonds”). The Fund may invest in domestic corporate debt obligations, including notes, which may be convertible or nonconvertible, commercial paper, units consisting of bonds with stock or warrants to buy stock attached, debentures and convertible debentures. The Fund will invest in both rated and unrated bonds. Unrated bonds may be more speculative in nature than rated bonds. The Fund may also invest up to 30% of its net assets in foreign securities, including up to 10% of its net assets in securities of issuers located in emerging markets. The Manager will limit the Fund’s investments in total non-US dollar currency to no more than 10% of its net assets. The Fund will hedge its total foreign currency exposure. These fixed income securities may include foreign government securities, debt obligations of foreign companies, and securities issued by supranational entities. A supranational entity is an entity established or financially supported by the national governments of one or more countries to promote reconstruction or development. Examples of supranational entities include, among others, the International Bank for Reconstruction and Development (more commonly known as the World Bank), the European Economic Community, the European Investment Bank, the Inter-Development Bank, and the Asian Development Bank. The Fund may invest in sponsored and unsponsored American depositary receipts (ADRs), European depositary receipts (EDRs), or global depositary receipts (GDRs). The Fund may also invest in zero coupon bonds and may purchase shares of other investment companies. The Fund will invest in both rated and unrated foreign securities. The Fund may invest in securities issued in any currency and may hold foreign currencies. Securities of issuers within a given country may be denominated in the currency of another country or in multinational currency units, such as the euro. The Fund may, from time to time, purchase or sell foreign currencies and/or engage in forward foreign currency contracts in order to facilitate or expedite settlement of Fund transactions and to minimize currency value fluctuations. In addition to the investments discussed above, the Fund may use a wide range of derivatives instruments, typically including options, futures contracts, options on futures contracts, forward foreign currency contracts, and swaps. The Fund will use derivatives for both hedging and nonhedging purposes. The Fund will not use derivatives for reasons inconsistent with its investment objective and will limit its investments in derivatives instruments to 20% of its net assets. The Fund’s investment objective is nonfundamental. This means that the Fund’s Board of Trustees (Board) may change the objective without obtaining shareholder approval. If the objective were changed, the Fund would notify shareholders at least 60 days before the change became effective. The following information is added after the section of the Fund’s Prospectus entitled “Who manages the Fund — Investment manager”: Sub-advisors Macquarie Investment Management Austria Kapitalanlage AG (MIMAK) is located at Kaerntner Strasse 28, 1010 Vienna, Austria. MIMAK is an affiliate of the Manager and a part of Macquarie Investment Management (MIM). MIM is the marketing name for certain companies comprising the asset management division of Macquarie Group Limited. As of December 31, 2018, MIM managed more than $234.5 billion in assets for institutional and individual clients. Although the Manager has principal responsibility for the Manager’s portion of the Fund, the Manager may seek investment advice and recommendations from MIMAK and the Manager may also permit MIMAK to execute Fund security trades on behalf of the Manager and exercise investment discretion for securities in certain markets where DMC believes it will be beneficial to utilize MIMAK’s specialized market knowledge. Macquarie Investment Management Global Limited (MIMGL), is located at 50 Martin Place, Sydney, Australia. MIMGL is an affiliate of the Manager and a part of MIM. MIM is the marketing name for certain companies comprising the asset management division of Macquarie Group Limited. As of December 31, 2018, MIM managed more than $234.5 billion in assets for institutional and individual clients. Although the Manager has principal responsibility for the Manager’s portion of the Fund, the Manager may seek investment advice and recommendations from MIMGL and the Manager may also permit MIMGL to execute Fund security trades on behalf of the Manager and exercise investment discretion for securities in certain markets where DMC believes it will be beneficial to utilize MIMGL’s specialized market knowledge. Macquarie Investment Management Europe Limited, (MIMEL), is located at 28 Ropemaker Street, London, England. MIMEL is an affiliate of the Manager and a part of MIM. MIM is the marketing name for certain companies comprising the asset management division of Macquarie Group Limited. As of December 31, 2018, MIM managed more than $234.5 billion in assets for institutional and individual clients. Although the Manager has principal responsibility for the Manager’s portion of the Fund, the Manager may seek investment advice and recommendations from MIMEL and the Manager may also permit MIMEL to execute Fund security trades on behalf of the Manager and exercise investment discretion for securities in certain markets where DMC believes it will be beneficial to utilize MIMEL’s specialized market knowledge. The following information is added after the section of the Fund’s SAI entitled “Investment Manager and Other Service Providers — Investment Manager”: Sub-Advisors The Manager has also entered into Sub-Advisory Agreements on behalf of Delaware Limited-Term Diversified Income Fund with Macquarie Investment Management Austria Kapitalanlage AG, Macquarie Investment Management Global Limited, and Macquarie Investment Management Europe Limited, each of which is an affiliate of the Manager (“Affiliated Sub-Advisor”). Pursuant to the terms of the relevant Sub-Advisory Agreement, the investment sub-advisory fee is paid by the Manager to each Affiliated Sub-advisor based on the extent to which an Affiliated Sub-Advisor provides services to the Fund. Because everyone's tax situation is unique, you should consult your tax professional about federal, state, local, or foreign tax consequences before making an investment in the Fund. Delaware Management Company (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 Fund is governed by US laws and regulations. *Please keep this Supplement for future reference.* This Supplement is dated June 28, 2019.
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 investment grade fixed income securities, including, but not limited to, fixed income securities issued or guaranteed by the US government, its agencies or instrumentalities, and by US corporations (80% policy). Investment grade fixed income securities are securities rated BBB- or higher by Standard & Poor’s Financial Services LLC (S&P) and Baa3 or higher by Moody’s Investors Service, Inc. (Moody’s), or similarly rated by another nationally recognized statistical rating organization (NRSRO), or those that are deemed to be of comparable quality. The Fund will maintain an average effective duration from one to three years. The Fund’s investment manager, Delaware Management Company (Manager), will determine how much of the Fund’s assets to allocate among the different types of fixed income securities in which the Fund may invest based on the Manager’s evaluation of economic and market conditions and its assessment of the returns and potential for appreciation that can be achieved from various sectors of the fixed income market. In addition, the Manager may seek investment advice and recommendations from its affiliates: Macquarie Investment Management Europe Limited, Macquarie Investment Management Austria Kapitalanlage AG, and Macquarie Investment Management Global Limited (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 DMC believes it will be beneficial to utilize an Affiliated Sub-Advisor’s specialized market knowledge. The corporate debt obligations in which the Fund may invest include bonds, notes, debentures, and commercial paper of US companies and, subject to the limitations described below, non-US companies. The Fund may also invest in a variety of securities that are issued or guaranteed as to the payment of principal and interest by the US government, and by various agencies or instrumentalities, which have been established or are sponsored by the US government, and, subject to the limitations described below, securities issued by foreign governments. Additionally, the Fund may invest in mortgage-backed securities issued or guaranteed by the US government, its agencies or instrumentalities, government-sponsored corporations, and mortgage-backed securities issued by certain private, nongovernment entities. The Fund may also invest in securities that are backed by assets such as receivables on home equity and credit card loans, automobile, mobile home, recreational vehicle and other loans, wholesale dealer floor plans, and leases. The Fund may invest up to 20% of its net assets in below-investment-grade securities (also known as high yield or “junk” bonds). The Fund may also invest up to 30% of its net assets in foreign securities, including up to 10% of its net assets in securities of issuers located in emerging markets. The Fund’s total non-US dollar currency exposure will be limited, in the aggregate, to no more than 10% of its net assets. The Fund may use a wide range of derivatives instruments, typically including options, futures contracts, options on futures contracts, forward foreign currency contracts, and swaps. 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 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 effect diversification. The Fund will not use derivatives for reasons inconsistent with its investment objective and will limit its investments in derivatives instruments to 20% of its net assets. 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.
Strategy Portfolio Concentration	rr_StrategyPortfolioConcentration	Under normal circumstances, the Fund will invest at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in investment grade fixed income securities, including, but not limited to, fixed income securities issued or guaranteed by the US government, its agencies or instrumentalities, and by US corporations (80% policy).
Delaware Limited-Term Diversified Income Fund \| Class A
Risk/Return:	dglt_RiskReturn1Abstract
Trading Symbol	dei_TradingSymbol	DTRIX
Delaware Limited-Term Diversified Income Fund \| Class C
Risk/Return:	dglt_RiskReturn1Abstract
Trading Symbol	dei_TradingSymbol	DTICX
Delaware Limited-Term Diversified Income Fund \| Class R
Risk/Return:	dglt_RiskReturn1Abstract
Trading Symbol	dei_TradingSymbol	DLTRX
Delaware Limited-Term Diversified Income Fund \| Institutional Class
Risk/Return:	dglt_RiskReturn1Abstract
Trading Symbol	dei_TradingSymbol	DTINX
Delaware Limited-Term Diversified Income Fund \| Class R6
Risk/Return:	dglt_RiskReturn1Abstract
Trading Symbol	dei_TradingSymbol	DLTZX

Risk/Return:

dglt_RiskReturn1Abstract

dei_DocumentPeriodEndDate

Dec. 31, 2018

Central Index Key

dei_EntityCentralIndexKey

0000357059

Document Creation Date

dei_DocumentCreationDate

Jun. 28, 2019

Prospectus Date

rr_ProspectusDate

Apr. 30, 2019

Supplement to Prospectus

rr_SupplementToProspectusTextBlock

DELAWARE GROUP^® LIMITED-TERM GOVERNMENT FUNDS

Delaware Limited-Term Diversified Income Fund (the “Fund”)

Supplement to the current Statutory Prospectus (the “Prospectus”)

and Statement of Additional Information (the “SAI”)

The Board of Trustees (“Trustees” or “Board”) of Delaware Group Government Fund (the “Trust”) approved the appointment of Macquarie Investment Management Austria Kapitalanlage AG (“MIMAK”), Macquarie Investment Management Europe Limited (“MIMEL”), and Macquarie Investment Management Global Limited (“MIMGL”) to serve as sub-advisors and provide certain sub-advisory services to the Fund from time to time at the discretion of Delaware Management Company (the “Manager”).

In connection therewith, the following replaces the information in the section of the Fund’s Prospectus entitled “Fund summary — What are the Fund’s principal investment strategies?”:

Under normal circumstances, the Fund will invest at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in investment grade fixed income securities, including, but not limited to, fixed income securities issued or guaranteed by the US government, its agencies or instrumentalities, and by US corporations (80% policy). Investment grade fixed income securities are securities rated BBB- or higher by Standard & Poor’s Financial Services LLC (S&P) and Baa3 or higher by Moody’s Investors Service, Inc. (Moody’s), or similarly rated by another nationally recognized statistical rating organization (NRSRO), or those that are deemed to be of comparable quality. The Fund will maintain an average effective duration from one to three years. The Fund’s investment manager, Delaware Management Company (Manager), will determine how much of the Fund’s assets to allocate among the different types of fixed income securities in which the Fund may invest based on the Manager’s evaluation of economic and market conditions and its assessment of the returns and potential for appreciation that can be achieved from various sectors of the fixed income market. In addition, the Manager may seek investment advice and recommendations from its affiliates: Macquarie Investment Management Europe Limited, Macquarie Investment Management Austria Kapitalanlage AG, and Macquarie Investment Management Global Limited (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 DMC believes it will be beneficial to utilize an Affiliated Sub-Advisor’s specialized market knowledge.

The corporate debt obligations in which the Fund may invest include bonds, notes, debentures, and commercial paper of US companies and, subject to the limitations described below, non-US companies. The Fund may also invest in a variety of securities that are issued or guaranteed as to the payment of principal and interest by the US government, and by various agencies or instrumentalities, which have been established or are sponsored by the US government, and, subject to the limitations described below, securities issued by foreign governments.

Additionally, the Fund may invest in mortgage-backed securities issued or guaranteed by the US government, its agencies or instrumentalities, government-sponsored corporations, and mortgage-backed securities issued by certain private, nongovernment entities. The Fund may also invest in securities that are backed by assets such as receivables on home equity and credit card loans, automobile, mobile home, recreational vehicle and other loans, wholesale dealer floor plans, and leases.

The Fund may invest up to 20% of its net assets in below-investment-grade securities (also known as high yield or “junk” bonds).

The Fund may also invest up to 30% of its net assets in foreign securities, including up to 10% of its net assets in securities of issuers located in emerging markets. The Fund’s total non-US dollar currency exposure will be limited, in the aggregate, to no more than 10% of its net assets.

The Fund may use a wide range of derivatives instruments, typically including options, futures contracts, options on futures contracts, forward foreign currency contracts, and swaps. 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 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 effect diversification. The Fund will not use derivatives for reasons inconsistent with its investment objective and will limit its investments in derivatives instruments to 20% of its net assets.

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 following information is added into the section of the Fund’s Prospectus entitled “Fund summary — Who manages the Fund?”:

Sub-advisors

Macquarie Investment Management Austria Kapitalanlage AG

Macquarie Investment Management Europe Limited

Macquarie Investment Management Global Limited

The following replaces the information in the section of the Fund's Prospectus entitled "How we manage the Fund — Our principal investment strategies”:

The Manager analyzes economic and market conditions, seeking to identify the securities or market sectors that the Manager believes are the best investments for the Fund. Securities in which the Fund may invest include, but are not limited to, the following:

•securities issued or guaranteed by the US government, such as US Treasurys;

•securities issued by US government agencies or instrumentalities, such as securities of Ginnie Mae;

•investment grade and below-investment-grade corporate bonds; nonagency mortgage-backed securities (MBS), asset-backed securities (ABS), commercial mortgage-backed securities (CMBS), collateralized mortgage obligations (CMOs), and real estate mortgage investment conduits (REMICs);

•securities of foreign issuers in both developed and emerging markets, denominated in foreign currencies and US dollars;

•bank loans; and

•short-term investments.

In addition, the Manager may seek investment advice and recommendations from its affiliates: Macquarie Investment Management Europe Limited, Macquarie Investment Management Austria Kapitalanlage AG, and Macquarie Investment Management Global Limited (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 DMC believes it will be beneficial to utilize an Affiliated Sub-Advisor’s specialized market knowledge.

Under normal circumstances, the Fund will invest at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in investment grade fixed income securities. The Fund may invest in debt obligations issued or guaranteed by the US government, its agencies or instrumentalities, and by US corporations. The corporate debt obligations in which the Fund may invest include bonds, notes, debentures, and commercial paper of US companies. The US government securities in which the Fund may invest include a variety of securities that are issued or guaranteed as to the payment of principal and interest by the US government, and by various agencies or instrumentalities, which have been established or are sponsored by the US government.

The Fund may also invest in MBS issued or guaranteed by the US government, its agencies or instrumentalities, or by government-sponsored corporations. Other MBS in which the Fund may invest are issued by certain private, nongovernment entities. The Fund may also invest in securities that are backed by assets such as receivables on home equity and credit card loans, automobile, mobile home, recreational vehicle and other loans, wholesale dealer floor plans, and leases.

The Fund maintains an average effective duration from one to three years.

The Fund may also invest up to 20% of its net assets in below-investment-grade securities (commonly known as high yield or “junk bonds”). The Fund may invest in domestic corporate debt obligations, including notes, which may be convertible or nonconvertible, commercial paper, units consisting of bonds with stock or warrants to buy stock attached, debentures and convertible debentures. The Fund will invest in both rated and unrated bonds. Unrated bonds may be more speculative in nature than rated bonds.

The Fund may also invest up to 30% of its net assets in foreign securities, including up to 10% of its net assets in securities of issuers located in emerging markets. The Manager will limit the Fund’s investments in total non-US dollar currency to no more than 10% of its net assets. The Fund will hedge its total foreign currency exposure. These fixed income securities may include foreign government securities, debt obligations of foreign companies, and securities issued by supranational entities. A supranational entity is an entity established or financially supported by the national governments of one or more countries to promote reconstruction or development. Examples of supranational entities include, among others, the International Bank for Reconstruction and Development (more commonly known as the World Bank), the European Economic Community, the European Investment Bank, the Inter-Development Bank, and the Asian Development Bank.

The Fund may invest in sponsored and unsponsored American depositary receipts (ADRs), European depositary receipts (EDRs), or global depositary receipts (GDRs). The Fund may also invest in zero coupon bonds and may purchase shares of other investment companies.

The Fund will invest in both rated and unrated foreign securities.

The Fund may invest in securities issued in any currency and may hold foreign currencies. Securities of issuers within a given country may be denominated in the currency of another country or in multinational currency units, such as the euro. The Fund may, from time to time, purchase or sell foreign currencies and/or engage in forward foreign currency contracts in order to facilitate or expedite settlement of Fund transactions and to minimize currency value fluctuations.

In addition to the investments discussed above, the Fund may use a wide range of derivatives instruments, typically including options, futures contracts, options on futures contracts, forward foreign currency contracts, and swaps. The Fund will use derivatives for both hedging and nonhedging purposes. The Fund will not use derivatives for reasons inconsistent with its investment objective and will limit its investments in derivatives instruments to 20% of its net assets.

The Fund’s investment objective is nonfundamental. This means that the Fund’s Board of Trustees (Board) may change the objective without obtaining shareholder approval. If the objective were changed, the Fund would notify shareholders at least 60 days before the change became effective.

The following information is added after the section of the Fund’s Prospectus entitled “Who manages the Fund — Investment manager”:

Sub-advisors

Macquarie Investment Management Austria Kapitalanlage AG (MIMAK) is located at Kaerntner Strasse 28, 1010 Vienna, Austria. MIMAK is an affiliate of the Manager and a part of Macquarie Investment Management (MIM). MIM is the marketing name for certain companies comprising the asset management division of Macquarie Group Limited. As of December 31, 2018, MIM managed more than $234.5 billion in assets for institutional and individual clients. Although the Manager has principal responsibility for the Manager’s portion of the Fund, the Manager may seek investment advice and recommendations from MIMAK and the Manager may also permit MIMAK to execute Fund security trades on behalf of the Manager and exercise investment discretion for securities in certain markets where DMC believes it will be beneficial to utilize MIMAK’s specialized market knowledge.

Macquarie Investment Management Global Limited (MIMGL), is located at 50 Martin Place, Sydney, Australia. MIMGL is an affiliate of the Manager and a part of MIM. MIM is the marketing name for certain companies comprising the asset management division of Macquarie Group Limited. As of December 31, 2018, MIM managed more than $234.5 billion in assets for institutional and individual clients. Although the Manager has principal responsibility for the Manager’s portion of the Fund, the Manager may seek investment advice and recommendations from MIMGL and the Manager may also permit MIMGL to execute Fund security trades on behalf of the Manager and exercise investment discretion for securities in certain markets where DMC believes it will be beneficial to utilize MIMGL’s specialized market knowledge.

Macquarie Investment Management Europe Limited, (MIMEL), is located at 28 Ropemaker Street, London, England. MIMEL is an affiliate of the Manager and a part of MIM. MIM is the marketing name for certain companies comprising the asset management division of Macquarie Group Limited. As of December 31, 2018, MIM managed more than $234.5 billion in assets for institutional and individual clients. Although the Manager has principal responsibility for the Manager’s portion of the Fund, the Manager may seek investment advice and recommendations from MIMEL and the Manager may also permit MIMEL to execute Fund security trades on behalf of the Manager and exercise investment discretion for securities in certain markets where DMC believes it will be beneficial to utilize MIMEL’s specialized market knowledge.

The following information is added after the section of the Fund’s SAI entitled “Investment Manager and Other Service Providers — Investment Manager”:

Sub-Advisors

The Manager has also entered into Sub-Advisory Agreements on behalf of Delaware Limited-Term Diversified Income Fund with Macquarie Investment Management Austria Kapitalanlage AG, Macquarie Investment Management Global Limited, and Macquarie Investment Management Europe Limited, each of which is an affiliate of the Manager (“Affiliated Sub-Advisor”). Pursuant to the terms of the relevant Sub-Advisory Agreement, the investment sub-advisory fee is paid by the Manager to each Affiliated Sub-advisor based on the extent to which an Affiliated Sub-Advisor provides services to the Fund.

Because everyone's tax situation is unique, you should consult your tax professional about federal, state, local, or foreign tax consequences before making an investment in the Fund.

Delaware Management Company (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 Fund is governed by US laws and regulations.

Please keep this Supplement for future reference.

This Supplement is dated June 28, 2019.

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 investment grade fixed income securities, including, but not limited to, fixed income securities issued or guaranteed by the US government, its agencies or instrumentalities, and by US corporations (80% policy). Investment grade fixed income securities are securities rated BBB- or higher by Standard & Poor’s Financial Services LLC (S&P) and Baa3 or higher by Moody’s Investors Service, Inc. (Moody’s), or similarly rated by another nationally recognized statistical rating organization (NRSRO), or those that are deemed to be of comparable quality. The Fund will maintain an average effective duration from one to three years. The Fund’s investment manager, Delaware Management Company (Manager), will determine how much of the Fund’s assets to allocate among the different types of fixed income securities in which the Fund may invest based on the Manager’s evaluation of economic and market conditions and its assessment of the returns and potential for appreciation that can be achieved from various sectors of the fixed income market. In addition, the Manager may seek investment advice and recommendations from its affiliates: Macquarie Investment Management Europe Limited, Macquarie Investment Management Austria Kapitalanlage AG, and Macquarie Investment Management Global Limited (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 DMC believes it will be beneficial to utilize an Affiliated Sub-Advisor’s specialized market knowledge.

The corporate debt obligations in which the Fund may invest include bonds, notes, debentures, and commercial paper of US companies and, subject to the limitations described below, non-US companies. The Fund may also invest in a variety of securities that are issued or guaranteed as to the payment of principal and interest by the US government, and by various agencies or instrumentalities, which have been established or are sponsored by the US government, and, subject to the limitations described below, securities issued by foreign governments.

Additionally, the Fund may invest in mortgage-backed securities issued or guaranteed by the US government, its agencies or instrumentalities, government-sponsored corporations, and mortgage-backed securities issued by certain private, nongovernment entities. The Fund may also invest in securities that are backed by assets such as receivables on home equity and credit card loans, automobile, mobile home, recreational vehicle and other loans, wholesale dealer floor plans, and leases.

The Fund may invest up to 20% of its net assets in below-investment-grade securities (also known as high yield or “junk” bonds).

The Fund may also invest up to 30% of its net assets in foreign securities, including up to 10% of its net assets in securities of issuers located in emerging markets. The Fund’s total non-US dollar currency exposure will be limited, in the aggregate, to no more than 10% of its net assets.

The Fund may use a wide range of derivatives instruments, typically including options, futures contracts, options on futures contracts, forward foreign currency contracts, and swaps. 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 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 effect diversification. The Fund will not use derivatives for reasons inconsistent with its investment objective and will limit its investments in derivatives instruments to 20% of its net assets.

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.

Trading Symbol

dei_TradingSymbol

DTRIX

Risk/Return:

dglt_RiskReturn1Abstract

Trading Symbol

dei_TradingSymbol

DLTRX

Risk/Return:

dglt_RiskReturn1Abstract

Trading Symbol

dei_TradingSymbol

DLTZX