Investment Strategy	Mar. 31, 2026
Western Asset Intermediate-Term Municipals Fund
Prospectus [Line Items]
Strategy [Heading]	Principal investment strategies
Strategy Narrative [Text Block]	Under normal circumstances, the fund invests at least 80% of its assets in “municipal securities.” Municipal securities are securities and other investments with similar economic characteristics, the interest on which is exempt from regular federal income tax but which may be subject to the federal alternative minimum tax. The fund’s 80% policy may not be changed without a shareholder vote. Municipal securities include debt obligations issued by or on behalf of the states, territories and possessions of the United States, and the District of Columbia, and their political subdivisions, agencies and public authorities, and other qualifying issuers. These securities include participation or other interests in municipal securities issued or backed by banks, insurance companies and other financial institutions. Some municipal securities, such as general obligation issues, are backed by the issuer’s taxing authority, while other municipal securities, such as revenue issues, are backed only by revenues from certain facilities or other sources and not by the issuer itself. The fund may invest in securities of any maturity. The fund normally expects to maintain an average effective portfolio maturity of between three and ten years. The average effective portfolio maturity of the fund is a weighted average of all the maturities of the securities in the portfolio, computed by weighting each security’s effective maturity, as estimated by the subadviser, by the market value of the security, and any cash in the portfolio. For purposes of determining the fund’s average effective maturity, a security’s maturity date will generally be deemed to be the next interest rate reset date for an adjustable rate security or, if earlier, the date of the next demand feature, such as a put feature, when the fund would be entitled to receive payment of principal and interest. The subadviser may also take into account estimated future prepayments on securities, such as mortgage- backed securities, with uncertain future cash flows and estimations of call features and similar features and options. These estimates may prove to be incorrect. The fund focuses on investment grade bonds (that is, securities rated in the Baa/BBB categories or above or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser), but may invest up to 20% of its assets in below investment grade bonds (that is, securities rated below the Baa/BBB categories or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser) (commonly known as “high yield” or “junk” bonds). The fund may also invest in securities of other open-end or closed-end investment companies, including exchange-traded funds (“ETFs”), that invest primarily in municipal securities. Instead of, and/or in addition to, investing directly in particular securities, the fund may use instruments such as derivatives, including options, futures contracts and inverse floating rate instruments issued in tender option bond transactions, and other synthetic instruments that are intended to provide economic exposure to the securities or the issuer or to be used as a hedging technique. The fund may use one or more types of these instruments without limit, subject to applicable regulatory requirements. The fund’s investments in derivative instruments and other investments that provide exposure to the investment focus indicated in the fund’s 80% policy are included in the fund’s 80% basket. For additional information regarding derivatives, see “More on the fund’s investment strategies, investments and risks—Derivatives” in the Prospectus. The fund may also engage in a variety of transactions using derivatives in order to change the investment characteristics of its portfolio (such as shortening or lengthening duration) and for other purposes. The fund may leverage its assets by investing proceeds received through tender option bond transactions, which is considered a form of borrowing. See “More on the fund’s investment strategies, investments and risks—Tender option bonds” in the Prospectus.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block]	Under normal circumstances, the fund invests at least 80% of its assets in “municipal securities.” Municipal securities are securities and other investments with similar economic characteristics, the interest on which is exempt from regular federal income tax but which may be subject to the federal alternative minimum tax. The fund’s 80% policy may not be changed without a shareholder vote.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block]	The fund focuses on investment grade bonds (that is, securities rated in the Baa/BBB categories or above or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser), but may invest up to 20% of its assets in below investment grade bonds (that is, securities rated below the Baa/BBB categories or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser) (commonly known as “high yield” or “junk” bonds).
Rule 35d-1 Eighty Percent Investment Policy [Text Block]	Under normal circumstances, the fund invests at least 80% of its assets in “municipal securities.” Municipal securities are securities and other investments with similar economic characteristics, the interest on which is exempt from regular federal income tax but which may be subject to the federal alternative minimum tax.
Western Asset New Jersey Municipals Fund
Prospectus [Line Items]
Strategy [Heading]	Principal investment strategies
Strategy Narrative [Text Block]	Under normal circumstances, the fund invests at least 80% of its assets in “New Jersey municipal securities.” New Jersey municipal securities are securities and other investments with similar economic characteristics the interest on which is exempt from regular federal income tax and New Jersey state personal income tax but which may be subject to the federal alternative minimum tax. If the interest income on a municipal security meets these standards, the fund will treat the municipal security as qualifying for purposes of the fund’s 80% investment policy even if the issuer is located outside of the State of New Jersey. The fund’s 80% policy may not be changed without a shareholder vote. New Jersey municipal securities include debt obligations issued by or on behalf of the states, territories and possessions of the United States, and the District of Columbia, and their political subdivisions, agencies and public authorities, and other qualifying issuers. These securities include participation or other interests in municipal securities issued or backed by banks, insurance companies and other financial institutions. Some municipal securities, such as general obligation issues, are backed by the issuer’s taxing authority, while other municipal securities, such as revenue issues, are backed only by revenues from certain facilities or other sources and not by the issuer itself. The fund focuses on investment grade bonds (that is, securities rated in the Baa/BBB categories or above or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser), but may invest up to 20% of its assets in below investment grade bonds (commonly known as “high yield” or “junk” bonds). The fund may also invest in securities of other open-end or closed-end investment companies, including exchange-traded funds (“ETFs”), that invest primarily in municipal securities. Instead of, and/or in addition to, investing directly in particular securities, the fund may use instruments such as derivatives, including options, futures contracts and inverse floating rate instruments issued in tender option bond transactions, and other synthetic instruments that are intended to provide economic exposure to the securities or the issuer or to be used as a hedging technique. The fund may use one or more types of these instruments without limit, subject to applicable regulatory requirements. The fund’s investments in derivative instruments and other investments that provide exposure to the investment focus indicated in the fund’s 80% policy are included in the fund’s 80% basket. For additional information regarding derivatives, see “More on the fund’s investment strategies, investments and risks—Derivatives” in the Prospectus. The fund may also engage in a variety of transactions using derivatives in order to change the investment characteristics of its portfolio (such as shortening or lengthening duration) and for other purposes. The fund may leverage its assets by investing proceeds received through tender option bond transactions, which is considered a form of borrowing. See “More on the fund’s investment strategies, investments and risks—Tender option bonds” in the Prospectus. The fund is classified as “non-diversified,” which means it may invest a larger percentage of its assets in a smaller number of issuers than a diversified fund.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block]	Under normal circumstances, the fund invests at least 80% of its assets in “New Jersey municipal securities.” New Jersey municipal securities are securities and other investments with similar economic characteristics the interest on which is exempt from regular federal income tax and New Jersey state personal income tax but which may be subject to the federal alternative minimum tax. If the interest income on a municipal security meets these standards, the fund will treat the municipal security as qualifying for purposes of the fund’s 80% investment policy even if the issuer is located outside of the State of New Jersey. The fund’s 80% policy may not be changed without a shareholder vote.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block]	The fund focuses on investment grade bonds (that is, securities rated in the Baa/BBB categories or above or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser), but may invest up to 20% of its assets in below investment grade bonds (commonly known as “high yield” or “junk” bonds).
Rule 35d-1 Eighty Percent Investment Policy [Text Block]	Under normal circumstances, the fund invests at least 80% of its assets in “New Jersey municipal securities.” New Jersey municipal securities are securities and other investments with similar economic characteristics the interest on which is exempt from regular federal income tax and New Jersey state personal income tax but which may be subject to the federal alternative minimum tax.
Western Asset New York Municipals Fund
Prospectus [Line Items]
Strategy [Heading]	Principal investment strategies
Strategy Narrative [Text Block]	Under normal circumstances, the fund invests at least 80% of its assets in “New York municipal securities.” New York municipal securities are securities and other investments with similar economic characteristics, the interest on which is exempt from regular federal income tax and New York state and New York City personal income taxes but which may be subject to the federal alternative minimum tax. If the interest income on a municipal security meets these standards, the fund will treat the municipal security as qualifying for purposes of the fund’s 80% investment policy even if the issuer is located outside of the State of New York. The fund’s 80% policy may not be changed without a shareholder vote. New York municipal securities include debt obligations issued by or on behalf of the states, territories and possessions of the United States, and the District of Columbia, and their political subdivisions, agencies and public authorities, and other qualifying issuers. These securities include participation or other interests in municipal securities issued or backed by banks, insurance companies and other financial institutions. Some municipal securities, such as general obligation issues, are backed by the issuer’s taxing authority, while other municipal securities, such as revenue issues, are backed only by revenues from certain facilities or other sources and not by the issuer itself. The fund focuses on investment grade bonds (that is, securities rated in the Baa/BBB categories or above or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser), but may invest up to 20% of its assets in below investment grade bonds (commonly known as “high yield” or “junk” bonds). The fund may also invest in securities of other open-end or closed-end investment companies, including exchange-traded funds (“ETFs”), that invest primarily in municipal securities. Instead of, and/or in addition to, investing directly in particular securities, the fund may use instruments such as derivatives, including options, futures contracts and inverse floating rate instruments issued in tender option bond transactions, and other synthetic instruments that are intended to provide economic exposure to the securities or the issuer or to be used as a hedging technique. The fund may use one or more types of these instruments without limit, subject to applicable regulatory requirements. The fund’s investments in derivative instruments and other investments that provide exposure to the investment focus indicated in the fund’s 80% policy are included in the fund’s 80% basket. For additional information regarding derivatives, see “More on the fund’s investment strategies, investments and risks—Derivatives” in the Prospectus. The fund may also engage in a variety of transactions using derivatives in order to change the investment characteristics of its portfolio (such as shortening or lengthening duration) and for other purposes. The fund may leverage its assets by investing proceeds received through tender option bond transactions, which is considered a form of borrowing. See “More on the fund’s investment strategies, investments and risks—Tender option bonds” in the Prospectus. The fund is classified as “non-diversified,” which means it may invest a larger percentage of its assets in a smaller number of issuers than a diversified fund.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block]	Under normal circumstances, the fund invests at least 80% of its assets in “New York municipal securities.” New York municipal securities are securities and other investments with similar economic characteristics, the interest on which is exempt from regular federal income tax and New York state and New York City personal income taxes but which may be subject to the federal alternative minimum tax. If the interest income on a municipal security meets these standards, the fund will treat the municipal security as qualifying for purposes of the fund’s 80% investment policy even if the issuer is located outside of the State of New York. The fund’s 80% policy may not be changed without a shareholder vote.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block]	The fund focuses on investment grade bonds (that is, securities rated in the Baa/BBB categories or above or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser), but may invest up to 20% of its assets in below investment grade bonds (commonly known as “high yield” or “junk” bonds).
Rule 35d-1 Eighty Percent Investment Policy [Text Block]	Under normal circumstances, the fund invests at least 80% of its assets in “New York municipal securities.” New York municipal securities are securities and other investments with similar economic characteristics, the interest on which is exempt from regular federal income tax and New York state and New York City personal income taxes but which may be subject to the federal alternative minimum tax.
Western Asset Pennsylvania Municipals Fund
Prospectus [Line Items]
Strategy [Heading]	Principal investment strategies
Strategy Narrative [Text Block]	Under normal circumstances, the fund invests at least 80% of its assets in “Pennsylvania municipal securities.” Pennsylvania municipal securities are securities and other investments with similar economic characteristics the interest on which is exempt from regular federal income tax and Pennsylvania state personal income taxes but which may be subject to the federal alternative minimum tax. If the interest income on a municipal security meets these standards, the fund will treat the municipal security as qualifying for purposes of the fund’s 80% investment policy even if the issuer is located outside of the Commonwealth of Pennsylvania. The fund’s 80% policy may not be changed without a shareholder vote. Pennsylvania municipal securities include debt obligations issued by or on behalf of the states, territories and possessions of the United States, and the District of Columbia, and their political subdivisions, agencies and public authorities, and other qualifying issuers. These securities include participation or other interests in municipal securities issued or backed by banks, insurance companies and other financial institutions. Some municipal securities, such as general obligation issues, are backed by the issuer’s taxing authority, while other municipal securities, such as revenue issues, are backed only by revenues from certain facilities or other sources and not by the issuer itself. The fund focuses on investment grade bonds (that is, securities rated in the Baa/BBB categories or above or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser), but may invest up to 20% of its assets in below investment grade bonds (commonly known as “high yield” or “junk” bonds). The fund may also invest in securities of other open‑end or closed‑end investment companies, including exchange-traded funds (“ETFs”), that invest primarily in municipal securities. Instead of, and/or in addition to, investing directly in particular securities, the fund may use instruments such as derivatives, including options, futures contracts and inverse floating rate instruments issued in tender option bond transactions, and other synthetic instruments that are intended to provide economic exposure to the securities or the issuer or to be used as a hedging technique. The fund may use one or more types of these instruments without limit, subject to applicable regulatory requirements. The fund’s investments in derivative instruments and other investments that provide exposure to the investment focus indicated in the fund’s 80% policy are included in the fund’s 80% basket. For additional information regarding derivatives, see “More on the fund’s investment strategies, investments and risks—Derivatives” in the Prospectus. The fund may also engage in a variety of transactions using derivatives in order to change the investment characteristics of its portfolio (such as shortening or lengthening duration) and for other purposes. The fund may leverage its assets by investing proceeds received through tender option bond transactions, which is considered a form of borrowing. See “More on the fund’s investment strategies, investments and risks—Tender option bonds” in the Prospectus. The fund is classified as “non‑diversified,” which means it may invest a larger percentage of its assets in a smaller number of issuers than a diversified fund.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block]	Under normal circumstances, the fund invests at least 80% of its assets in “Pennsylvania municipal securities.” Pennsylvania municipal securities are securities and other investments with similar economic characteristics the interest on which is exempt from regular federal income tax and Pennsylvania state personal income taxes but which may be subject to the federal alternative minimum tax. If the interest income on a municipal security meets these standards, the fund will treat the municipal security as qualifying for purposes of the fund’s 80% investment policy even if the issuer is located outside of the Commonwealth of Pennsylvania. The fund’s 80% policy may not be changed without a shareholder vote.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block]	The fund focuses on investment grade bonds (that is, securities rated in the Baa/BBB categories or above or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser), but may invest up to 20% of its assets in below investment grade bonds (commonly known as “high yield” or “junk” bonds).
Rule 35d-1 Eighty Percent Investment Policy [Text Block]	Under normal circumstances, the fund invests at least 80% of its assets in “Pennsylvania municipal securities.” Pennsylvania municipal securities are securities and other investments with similar economic characteristics the interest on which is exempt from regular federal income tax and Pennsylvania state personal income taxes but which may be subject to the federal alternative minimum tax.

Under normal circumstances, the fund invests at least 80% of its assets in “municipal securities.” Municipal securities are securities and other investments with similar economic characteristics, the interest on which is exempt from regular federal income tax but which may be subject to the federal alternative minimum tax. The fund’s 80% policy may not be changed without a shareholder vote.

Municipal securities include debt obligations issued by or on behalf of the states, territories and possessions of the United States, and the District of Columbia, and their political subdivisions, agencies and public authorities, and other qualifying issuers. These securities include participation or other interests in municipal securities issued or backed by banks, insurance companies and other financial institutions.

Some municipal securities, such as general obligation issues, are backed by the issuer’s taxing authority, while other municipal securities, such as revenue issues, are backed only by revenues from certain facilities or other sources and not by the issuer itself.

The fund may invest in securities of any maturity. The fund normally expects to maintain an average effective portfolio maturity of between three and ten years. The average effective portfolio maturity of the fund is a weighted average of all the maturities of the securities in the portfolio, computed by weighting each security’s effective maturity, as estimated by the subadviser, by the market value of the security, and any cash in the portfolio. For purposes of determining the fund’s average effective maturity, a security’s maturity date will generally be deemed to be the next interest rate reset date for an adjustable rate security or, if earlier, the date of the next demand feature, such as a put feature, when the fund would be entitled to receive payment of principal and interest. The subadviser may also take into account estimated future prepayments on securities, such as mortgage-

backed securities, with uncertain future cash flows and estimations of call features and similar features and options. These estimates may prove to be incorrect.

The fund focuses on investment grade bonds (that is, securities rated in the Baa/BBB categories or above or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser), but may invest up to 20% of its assets in below investment grade bonds (that is, securities rated below the Baa/BBB categories or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser) (commonly known as “high yield” or “junk” bonds).

The fund may also invest in securities of other open-end or closed-end investment companies, including exchange-traded funds (“ETFs”), that invest primarily in municipal securities.

Instead of, and/or in addition to, investing directly in particular securities, the fund may use instruments such as derivatives, including options, futures contracts and inverse floating rate instruments issued in tender option bond transactions, and other synthetic instruments that are intended to provide economic exposure to the securities or the issuer or to be used as a hedging technique. The fund may use one or more types of these instruments without limit, subject to applicable regulatory requirements. The fund’s investments in derivative instruments and other investments that provide exposure to the investment focus indicated in the fund’s 80% policy are included in the fund’s 80% basket. For additional information regarding derivatives, see “More on the fund’s investment strategies, investments and risks—Derivatives” in the Prospectus.

The fund may also engage in a variety of transactions using derivatives in order to change the investment characteristics of its portfolio (such as shortening or lengthening duration) and for other purposes. The fund may leverage its assets by investing proceeds received through tender option bond transactions, which is considered a form of borrowing. See “More on the fund’s investment strategies, investments and risks—Tender option bonds” in the Prospectus.

Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block]

The fund focuses on investment grade bonds (that is, securities rated in the Baa/BBB categories or above or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser), but may invest up to 20% of its assets in below investment grade bonds (that is, securities rated below the Baa/BBB categories or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser) (commonly known as “high yield” or “junk” bonds).

Strategy [Heading]

Principal investment strategies

Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block]

Under normal circumstances, the fund invests at least 80% of its assets in “New Jersey municipal securities.” New Jersey municipal securities are securities and other investments with similar economic characteristics the interest on which is exempt from regular federal income tax and New Jersey state personal income tax but which may be subject to the federal alternative minimum tax. If the interest income on a municipal security meets these standards, the fund will treat the municipal security as qualifying for purposes of the fund’s 80% investment policy even if the issuer is located outside of the State of New Jersey. The fund’s 80% policy may not be changed without a shareholder vote.

Rule 35d-1 Eighty Percent Investment Policy [Text Block]

Under normal circumstances, the fund invests at least 80% of its assets in “New Jersey municipal securities.” New Jersey municipal securities are securities and other investments with similar economic characteristics the interest on which is exempt from regular federal income tax and New Jersey state personal income tax but which may be subject to the federal alternative minimum tax.

Prospectus [Line Items]

Strategy Narrative [Text Block]

Under normal circumstances, the fund invests at least 80% of its assets in “New York municipal securities.” New York municipal securities are securities and other investments with similar economic characteristics, the interest on which is exempt from regular federal income tax and New York state and New York City personal income taxes but which may be subject to the federal alternative minimum tax. If the interest income on a municipal security meets these standards, the fund will treat the municipal security as qualifying for purposes of the fund’s 80% investment policy even if the issuer is located outside of the State of New York. The fund’s 80% policy may not be changed without a shareholder vote.

New York municipal securities include debt obligations issued by or on behalf of the states, territories and possessions of the United States, and the District of Columbia, and their political subdivisions, agencies and public authorities, and other qualifying issuers. These securities include participation or other interests in municipal securities issued or backed by banks, insurance companies and other financial institutions.

Some municipal securities, such as general obligation issues, are backed by the issuer’s taxing authority, while other municipal securities, such as revenue issues, are backed only by revenues from certain facilities or other sources and not by the issuer itself.

The fund focuses on investment grade bonds (that is, securities rated in the Baa/BBB categories or above or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser), but may invest up to 20% of its assets in below investment grade bonds (commonly known as “high yield” or “junk” bonds).

The fund may also invest in securities of other open-end or closed-end investment companies, including exchange-traded funds (“ETFs”), that invest primarily in municipal securities.

Instead of, and/or in addition to, investing directly in particular securities, the fund may use instruments such as derivatives, including options, futures contracts and inverse floating rate instruments issued in tender option bond transactions, and other synthetic instruments that are intended to provide economic exposure to the securities or the issuer or to be used as a hedging technique. The fund may use one or more types of these instruments without limit, subject to applicable regulatory requirements. The fund’s investments in derivative instruments and other investments that provide exposure to the investment focus indicated in the fund’s 80% policy are included in the fund’s 80% basket. For additional information regarding derivatives, see “More on the fund’s investment strategies, investments and risks—Derivatives” in the Prospectus.

The fund may also engage in a variety of transactions using derivatives in order to change the investment characteristics of its portfolio (such as shortening or lengthening duration) and for other purposes. The fund may leverage its assets by investing proceeds received through tender option bond transactions, which is considered a form of borrowing. See “More on the fund’s investment strategies, investments and risks—Tender option bonds” in the Prospectus.

The fund is classified as “non-diversified,” which means it may invest a larger percentage of its assets in a smaller number of issuers than a diversified fund.

Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block]

The fund focuses on investment grade bonds (that is, securities rated in the Baa/BBB categories or above or, if unrated or deemed to be unrated by the subadviser, determined to be of comparable credit quality by the subadviser), but may invest up to 20% of its assets in below investment grade bonds (commonly known as “high yield” or “junk” bonds).

Strategy [Heading]

Principal investment strategies

Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block]

Under normal circumstances, the fund invests at least 80% of its assets in “Pennsylvania municipal securities.” Pennsylvania municipal securities are securities and other investments with similar economic characteristics the interest on which is exempt from regular federal income tax and Pennsylvania state personal income taxes but which may be subject to the federal alternative minimum tax. If the interest income on a municipal security meets these standards, the fund will treat the municipal security as qualifying for purposes of the fund’s 80% investment policy even if the issuer is located outside of the Commonwealth of Pennsylvania. The fund’s 80% policy may not be changed without a shareholder vote.

Rule 35d-1 Eighty Percent Investment Policy [Text Block]

Under normal circumstances, the fund invests at least 80% of its assets in “Pennsylvania municipal securities.” Pennsylvania municipal securities are securities and other investments with similar economic characteristics the interest on which is exempt from regular federal income tax and Pennsylvania state personal income taxes but which may be subject to the federal alternative minimum tax.