v3.25.4
Fees and Expenses
Sep. 30, 2025
USD ($)
Lord Abbett Short Duration Tax Free Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] FEES AND EXPENSES
Expense Narrative [Text Block]

This table 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 certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds. More information about these and other discounts is available from your financial intermediary and in “Sales Charge Reductions and Waivers” on page 130 of the prospectus, Appendix A to the prospectus, titled “Intermediary-Specific Sales Charge Reductions and Waivers,” and “Purchases, Redemptions, Pricing, and Payments to Dealers” on page 9-1 of Part II of the statement of additional information (“SAI”).
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts if you and certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees (Fees paid directly from your investment)
Shareholder Fees [Table]
Shareholder Fees - Lord Abbett Short Duration Tax Free Fund
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) [1] 2.25% 0.00% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) [1] 0.00% [2] 1.00% [3] 0.00% 0.00% 0.00%
[1]

A shareholder transacting in share classes without a front-end sales charge may be required to pay a commission to its financial intermediary. Please contact your financial intermediary for more information about whether such a commission may apply to your transaction.
[2]

A contingent deferred sales charge (“CDSC”) of 1.00% may be assessed on certain Class A shares purchased or acquired without a sales charge if they are redeemed before the first day of the month in which the 18-month anniversary of the purchase falls.
[3]

A CDSC of 1.00% may be assessed on Class C shares if they are redeemed before the first anniversary of their purchase.

Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lord Abbett Short Duration Tax Free Fund
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Management Fees (as a percentage of Assets) 0.34% 0.34% 0.34% 0.34% 0.34%
Distribution and Service (12b-1) Fees 0.20% 0.83% [1] 0.10% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.13% 0.13% 0.13% 0.09% 0.13%
Expenses (as a percentage of Assets) 0.67% 1.30% 0.57% 0.43% 0.47%
Fee Waiver or Reimbursement [2] (0.02%) (0.02%) (0.02%) (0.02%) (0.02%)
Net Expenses (as a percentage of Assets) [2] 0.65% 1.28% 0.55% 0.41% 0.45%
Fee Waiver or Reimbursement over Assets, Date of Termination January 31, 2027 January 31, 2027 January 31, 2027 January 31, 2027 January 31, 2027
[1]

The 12b-1 fee the Fund will pay on Class C shares will be a blended rate calculated based on (i) 1.00% of the Fund’s average daily net assets attributable to shares held for less than one year and (ii) 0.80% of the Fund’s average daily net assets attributable to shares held for one year or more. All Class C shareholders of the Fund will bear 12b-1 fees at the same rate.
[2]

For the period from February 1, 2026 through January 31, 2027, Lord, Abbett & Co. LLC (“Lord Abbett”) has contractually agreed to waive its fees and reimburse expenses to the extent necessary to limit total net annual operating expenses, excluding any applicable 12b-1 fees, acquired fund fees and expenses, interest-related expenses, taxes, expenses related to litigation and potential litigation, and extraordinary expenses, to an annual rate of 0.41% for Class F3 and to an annual rate of 0.45% for each other class. This agreement may be terminated only by the Fund’s Board of Directors.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, giving effect to the fee waiver and expense reimbursement arrangement described above. Class C shares automatically convert to Class A shares after eight years. The expense example for Class C shares for the ten-year period reflects the conversion to Class A shares. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example by, Year, Caption [Text] If Shares Are Redeemed
Expense Example, With Redemption [Table]
Expense Example - Lord Abbett Short Duration Tax Free Fund - USD ($)
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Expense Example, with Redemption, 1 Year $ 290 $ 230 $ 56 $ 42 $ 46
Expense Example, with Redemption, 3 Years 433 410 181 136 149
Expense Example, with Redemption, 5 Years 588 711 316 239 261
Expense Example, with Redemption, 10 Years $ 1,039 $ 1,392 $ 712 $ 540 $ 590
Expense Example, No Redemption, By Year, Caption [Text] If Shares Are Not Redeemed
Expense Example, No Redemption [Table]
Expense Example, No Redemption - Lord Abbett Short Duration Tax Free Fund - USD ($)
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Expense Example, No Redemption, 1 Year $ 290 $ 130 $ 56 $ 42 $ 46
Expense Example, No Redemption, 3 Years 433 410 181 136 149
Expense Example, No Redemption, 5 Years 588 711 316 239 261
Expense Example, No Redemption, 10 Years $ 1,039 $ 1,392 $ 712 $ 540 $ 590
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block] 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 64% of the average value of its portfolio.
Portfolio Turnover, Rate 64.00%
Lord Abbett Intermediate Tax Free Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] FEES AND EXPENSES
Expense Narrative [Text Block]

This table 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 certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds. More information about these and other discounts is available from your financial intermediary and in “Sales Charge Reductions and Waivers” on page 130 of the prospectus, Appendix A to the prospectus, titled “Intermediary-Specific Sales Charge Reductions and Waivers,” and “Purchases, Redemptions, Pricing, and Payments to Dealers” on page 9-1 of Part II of the statement of additional information (“SAI”).
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts if you and certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees (Fees paid directly from your investment)
Shareholder Fees [Table]
Shareholder Fees - Lord Abbett Intermediate Tax Free Fund
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) [1] 2.25% 0.00% 0.00% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) [1] 0.00% [2] 1.00% [3] 0.00% 0.00% 0.00% 0.00%
[1]

A shareholder transacting in share classes without a front-end sales charge may be required to pay a commission to its financial intermediary. Please contact your financial intermediary for more information about whether such a commission may apply to your transaction.
[2]

A contingent deferred sales charge (“CDSC”) of 1.00% may be assessed on certain Class A shares purchased or acquired without a sales charge if they are redeemed before the first day of the month in which the 18-month anniversary of the purchase falls.
[3]

A CDSC of 1.00% may be assessed on Class C shares if they are redeemed before the first anniversary of their purchase.

Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lord Abbett Intermediate Tax Free Fund
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Management Fees (as a percentage of Assets) 0.38% 0.38% 0.38% 0.38% 0.38% 0.38%
Distribution and Service (12b-1) Fees 0.20% 0.82% [1] 0.10% 0.00% 0.00% 0.45%
Component1 Other Expenses 0.01% 0.01% 0.01% 0.01% 0.01% 0.01%
Component3 Other Expenses 0.13% 0.13% 0.13% 0.08% 0.13% 0.13%
Other Expenses (as a percentage of Assets): 0.14% 0.14% 0.14% 0.09% 0.14% 0.14%
Expenses (as a percentage of Assets) 0.72% 1.34% 0.62% 0.47% 0.52% 0.97%
[1]

The 12b-1 fee the Fund will pay on Class C shares will be a blended rate calculated based on (i) 1.00% of the Fund’s average daily net assets attributable to shares held for less than one year and (ii) 0.80% of the Fund’s average daily net assets attributable to shares held for one year or more. All Class C shareholders of the Fund will bear 12b-1 fees at the same rate.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Class C shares automatically convert to Class A shares after eight years. The expense example for Class C shares for the ten-year period reflects the conversion to Class A shares. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example by, Year, Caption [Text] If Shares Are Redeemed
Expense Example, With Redemption [Table]
Expense Example - Lord Abbett Intermediate Tax Free Fund - USD ($)
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Expense Example, with Redemption, 1 Year $ 297 $ 236 $ 63 $ 48 $ 53 $ 99
Expense Example, with Redemption, 3 Years 450 425 199 151 167 309
Expense Example, with Redemption, 5 Years 617 734 346 263 291 536
Expense Example, with Redemption, 10 Years $ 1,099 $ 1,442 $ 774 $ 591 $ 653 $ 1,190
Expense Example, No Redemption, By Year, Caption [Text] If Shares Are Not Redeemed
Expense Example, No Redemption [Table]
Expense Example, No Redemption - Lord Abbett Intermediate Tax Free Fund - USD ($)
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Expense Example, No Redemption, 1 Year $ 297 $ 136 $ 63 $ 48 $ 53 $ 99
Expense Example, No Redemption, 3 Years 450 425 199 151 167 309
Expense Example, No Redemption, 5 Years 617 734 346 263 291 536
Expense Example, No Redemption, 10 Years $ 1,099 $ 1,442 $ 774 $ 591 $ 653 $ 1,190
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block] 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 49% of the average value of its portfolio.
Portfolio Turnover, Rate 49.00%
Lord Abbett National Tax-Free Income Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] FEES AND EXPENSES
Expense Narrative [Text Block]

This table 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 certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds. More information about these and other discounts is available from your financial intermediary and in “Sales Charge Reductions and Waivers” on page 130 of the prospectus, Appendix A to the prospectus, titled “Intermediary-Specific Sales Charge Reductions and Waivers,” and “Purchases, Redemptions, Pricing, and Payments to Dealers” on page 9-1 of Part II of the statement of additional information (“SAI”).
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts if you and certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees (Fees paid directly from your investment)
Shareholder Fees [Table]
Shareholder Fees - Lord Abbett National Tax-Free Income Fund
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) [1] 2.25% 0.00% 0.00% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) [1] 0.00% [2] 1.00% [3] 0.00% 0.00% 0.00% 0.00%
[1]

A shareholder transacting in share classes without a front-end sales charge may be required to pay a commission to its financial intermediary. Please contact your financial intermediary for more information about whether such a commission may apply to your transaction.
[2]

A contingent deferred sales charge (“CDSC”) of 1.00% may be assessed on certain Class A shares purchased or acquired without a sales charge if they are redeemed before the first day of the month in which the 18-month anniversary of the purchase falls.
[3]

A CDSC of 1.00% may be assessed on Class C shares if they are redeemed before the first anniversary of their purchase.

Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lord Abbett National Tax-Free Income Fund
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Management Fees (as a percentage of Assets) 0.38% 0.38% 0.38% 0.38% 0.38% 0.38%
Distribution and Service (12b-1) Fees 0.20% 0.82% [1] 0.10% 0.00% 0.00% 0.45%
Component1 Other Expenses 0.10% 0.10% 0.10% 0.10% 0.10% 0.10%
Component3 Other Expenses 0.12% 0.12% 0.12% 0.08% 0.12% 0.12%
Other Expenses (as a percentage of Assets): 0.22% 0.22% 0.22% 0.18% 0.22% 0.22%
Expenses (as a percentage of Assets) 0.80% 1.42% 0.70% 0.56% 0.60% 1.05%
[1]

The 12b-1 fee the Fund will pay on Class C shares will be a blended rate calculated based on (i) 1.00% of the Fund’s average daily net assets attributable to shares held for less than one year and (ii) 0.80% of the Fund’s average daily net assets attributable to shares held for one year or more. All Class C shareholders of the Fund will bear 12b-1 fees at the same rate.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Class C shares automatically convert to Class A shares after eight years. The expense example for Class C shares for the ten-year period reflects the conversion to Class A shares. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example by, Year, Caption [Text] If Shares Are Redeemed
Expense Example, With Redemption [Table]
Expense Example - Lord Abbett National Tax-Free Income Fund - USD ($)
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Expense Example, with Redemption, 1 Year $ 305 $ 245 $ 72 $ 57 $ 61 $ 107
Expense Example, with Redemption, 3 Years 475 449 224 179 192 334
Expense Example, with Redemption, 5 Years 659 776 390 313 335 579
Expense Example, with Redemption, 10 Years $ 1,193 $ 1,533 $ 871 $ 701 $ 750 $ 1,283
Expense Example, No Redemption, By Year, Caption [Text] If Shares Are Not Redeemed
Expense Example, No Redemption [Table]
Expense Example, No Redemption - Lord Abbett National Tax-Free Income Fund - USD ($)
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Expense Example, No Redemption, 1 Year $ 305 $ 145 $ 72 $ 57 $ 61 $ 107
Expense Example, No Redemption, 3 Years 475 449 224 179 192 334
Expense Example, No Redemption, 5 Years 659 776 390 313 335 579
Expense Example, No Redemption, 10 Years $ 1,193 $ 1,533 $ 871 $ 701 $ 750 $ 1,283
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block] 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 36% of the average value of its portfolio.
Portfolio Turnover, Rate 36.00%
Lord Abbett High Income Municipal Bond Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] FEES AND EXPENSES
Expense Narrative [Text Block]

This table 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 certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds. More information about these and other discounts is available from your financial intermediary and in “Sales Charge Reductions and Waivers” on page 130 of the prospectus, Appendix A to the prospectus, titled “Intermediary-Specific Sales Charge Reductions and Waivers,” and “Purchases, Redemptions, Pricing, and Payments to Dealers” on page 9-1 of Part II of the statement of additional information (“SAI”).
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts if you and certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees (Fees paid directly from your investment)
Shareholder Fees [Table]
Shareholder Fees - Lord Abbett High Income Municipal Bond Fund
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) [1] 2.25% 0.00% 0.00% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) [1] 0.00% [2] 1.00% [3] 0.00% 0.00% 0.00% 0.00%
[1]

A shareholder transacting in share classes without a front-end sales charge may be required to pay a commission to its financial intermediary. Please contact your financial intermediary for more information about whether such a commission may apply to your transaction.
[2]

A contingent deferred sales charge (“CDSC”) of 1.00% may be assessed on certain Class A shares purchased or acquired without a sales charge if they are redeemed before the first day of the month in which the 18-month anniversary of the purchase falls.
[3]

A CDSC of 1.00% may be assessed on Class C shares if they are redeemed before the first anniversary of their purchase.

Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lord Abbett High Income Municipal Bond Fund
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Management Fees (as a percentage of Assets) 0.44% 0.44% 0.44% 0.44% 0.44% 0.44%
Distribution and Service (12b-1) Fees 0.20% 0.83% [1] 0.10% 0.00% 0.00% 0.45%
Component1 Other Expenses 0.08% 0.08% 0.08% 0.08% 0.08% 0.08%
Component3 Other Expenses 0.12% 0.12% 0.12% 0.07% 0.12% 0.12%
Other Expenses (as a percentage of Assets): 0.20% 0.20% 0.20% 0.15% 0.20% 0.20%
Expenses (as a percentage of Assets) 0.84% 1.47% 0.74% 0.59% 0.64% 1.09%
[1]

The 12b-1 fee the Fund will pay on Class C shares will be a blended rate calculated based on (i) 1.00% of the Fund’s average daily net assets attributable to shares held for less than one year and (ii) 0.80% of the Fund’s average daily net assets attributable to shares held for one year or more. All Class C shareholders of the Fund will bear 12b-1 fees at the same rate.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Class C shares automatically convert to Class A shares after eight years. The expense example for Class C shares for the ten-year period reflects the conversion to Class A shares. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example by, Year, Caption [Text] If Shares Are Redeemed
Expense Example, With Redemption [Table]
Expense Example - Lord Abbett High Income Municipal Bond Fund - USD ($)
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Expense Example, with Redemption, 1 Year $ 309 $ 250 $ 76 $ 60 $ 65 $ 111
Expense Example, with Redemption, 3 Years 487 465 237 189 205 347
Expense Example, with Redemption, 5 Years 680 803 411 329 357 601
Expense Example, with Redemption, 10 Years $ 1,239 $ 1,587 $ 918 $ 738 $ 798 $ 1,329
Expense Example, No Redemption, By Year, Caption [Text] If Shares Are Not Redeemed
Expense Example, No Redemption [Table]
Expense Example, No Redemption - Lord Abbett High Income Municipal Bond Fund - USD ($)
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Expense Example, No Redemption, 1 Year $ 309 $ 150 $ 76 $ 60 $ 65 $ 111
Expense Example, No Redemption, 3 Years 487 465 237 189 205 347
Expense Example, No Redemption, 5 Years 680 803 411 329 357 601
Expense Example, No Redemption, 10 Years $ 1,239 $ 1,587 $ 918 $ 738 $ 798 $ 1,329
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block] 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 27% of the average value of its portfolio.
Portfolio Turnover, Rate 27.00%
Lord Abbett Short Duration High Income Municipal Bond Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] FEES AND EXPENSES
Expense Narrative [Text Block]

This table 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 certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds. More information about these and other discounts is available from your financial intermediary and in “Sales Charge Reductions and Waivers” on page 130 of the prospectus, Appendix A to the prospectus, titled “Intermediary-Specific Sales Charge Reductions and Waivers,” and “Purchases, Redemptions, Pricing, and Payments to Dealers” on page 9-1 of Part II of the statement of additional information (“SAI”).
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts if you and certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees (Fees paid directly from your investment)
Shareholder Fees [Table]
Shareholder Fees - Lord Abbett Short Duration High Income Municipal Bond Fund
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) [1] 2.25% 0.00% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) [1] 0.00% [2] 1.00% [3] 0.00% 0.00% 0.00%
[1]

A shareholder transacting in share classes without a front-end sales charge may be required to pay a commission to its financial intermediary. Please contact your financial intermediary for more information about whether such a commission may apply to your transaction.
[2]

A contingent deferred sales charge (“CDSC”) of 1.00% may be assessed on certain Class A shares purchased or acquired without a sales charge if they are redeemed before the first day of the month in which the 18-month anniversary of the purchase falls.
[3]

A CDSC of 1.00% may be assessed on Class C shares if they are redeemed before the first anniversary of their purchase.

Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lord Abbett Short Duration High Income Municipal Bond Fund
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Management Fees (as a percentage of Assets) 0.33% 0.33% 0.33% 0.33% 0.33%
Distribution and Service (12b-1) Fees 0.20% 0.85% [1] 0.10% 0.00% 0.00%
Component1 Other Expenses 0.01% 0.01% 0.01% 0.01% 0.01%
Component3 Other Expenses 0.12% 0.12% 0.12% 0.07% 0.12%
Other Expenses (as a percentage of Assets): 0.13% 0.13% 0.13% 0.08% 0.13%
Expenses (as a percentage of Assets) [2] 0.66% 1.31% 0.56% 0.41% 0.46%
[1]

The 12b-1 fee the Fund will pay on Class C shares will be a blended rate calculated based on (i) 1.00% of the Fund’s average daily net assets attributable to shares held for less than one year and (ii) 0.80% of the Fund’s average daily net assets attributable to shares held for one year or more. All Class C shareholders of the Fund will bear 12b-1 fees at the same rate.
[2]

These amounts have been updated from fiscal year amounts to reflect current fees and expenses.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Class C shares automatically convert to Class A shares after eight years. The expense example for Class C shares for the ten-year period reflects the conversion to Class A shares. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example by, Year, Caption [Text] If Shares Are Redeemed
Expense Example, With Redemption [Table]
Expense Example - Lord Abbett Short Duration High Income Municipal Bond Fund - USD ($)
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Expense Example, with Redemption, 1 Year $ 291 $ 233 $ 57 $ 42 $ 47
Expense Example, with Redemption, 3 Years 431 415 179 132 148
Expense Example, with Redemption, 5 Years 584 718 313 230 258
Expense Example, with Redemption, 10 Years $ 1,029 $ 1,400 $ 701 $ 518 $ 579
Expense Example, No Redemption, By Year, Caption [Text] If Shares Are Not Redeemed
Expense Example, No Redemption [Table]
Expense Example, No Redemption - Lord Abbett Short Duration High Income Municipal Bond Fund - USD ($)
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Expense Example, No Redemption, 1 Year $ 291 $ 133 $ 57 $ 42 $ 47
Expense Example, No Redemption, 3 Years 431 415 179 132 148
Expense Example, No Redemption, 5 Years 584 718 313 230 258
Expense Example, No Redemption, 10 Years $ 1,029 $ 1,400 $ 701 $ 518 $ 579
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block] 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 29% of the average value of its portfolio.
Portfolio Turnover, Rate 29.00%
Lord Abbett Short Duration High Income Municipal Bond Fund | Class A Shares  
Prospectus [Line Items]  
Expenses Restated to Reflect Current [Text] These amounts have been updated from fiscal year amounts to reflect current fees and expenses.
Lord Abbett Short Duration High Income Municipal Bond Fund | Class C Shares  
Prospectus [Line Items]  
Expenses Restated to Reflect Current [Text] These amounts have been updated from fiscal year amounts to reflect current fees and expenses.
Lord Abbett Short Duration High Income Municipal Bond Fund | Class F Shares  
Prospectus [Line Items]  
Expenses Restated to Reflect Current [Text] These amounts have been updated from fiscal year amounts to reflect current fees and expenses.
Lord Abbett Short Duration High Income Municipal Bond Fund | Class F3 Shares  
Prospectus [Line Items]  
Expenses Restated to Reflect Current [Text] These amounts have been updated from fiscal year amounts to reflect current fees and expenses.
Lord Abbett Short Duration High Income Municipal Bond Fund | Class I Shares  
Prospectus [Line Items]  
Expenses Restated to Reflect Current [Text] These amounts have been updated from fiscal year amounts to reflect current fees and expenses.
Lord Abbett California Tax-Free Income Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] FEES AND EXPENSES
Expense Narrative [Text Block]

This table 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 certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds. More information about these and other discounts is available from your financial intermediary and in “Sales Charge Reductions and Waivers” on page 130 of the prospectus, Appendix A to the prospectus, titled “Intermediary-Specific Sales Charge Reductions and Waivers,” and “Purchases, Redemptions, Pricing, and Payments to Dealers” on page 9-1 of Part II of the statement of additional information (“SAI”).
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts if you and certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees (Fees paid directly from your investment)
Shareholder Fees [Table]
Shareholder Fees - Lord Abbett California Tax-Free Income Fund
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) [1] 2.25% 0.00% 0.00% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) [1] 0.00% [2] 1.00% [3] 0.00% 0.00% 0.00% 0.00%
[1]

A shareholder transacting in share classes without a front-end sales charge may be required to pay a commission to its financial intermediary. Please contact your financial intermediary for more information about whether such a commission may apply to your transaction.
[2]

A contingent deferred sales charge (“CDSC”) of 1.00% may be assessed on certain Class A shares purchased or acquired without a sales charge if they are redeemed before the first day of the month in which the 18-month anniversary of the purchase falls.
[3]

A CDSC of 1.00% may be assessed on Class C shares if they are redeemed before the first anniversary of their purchase.

Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lord Abbett California Tax-Free Income Fund
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Management Fees (as a percentage of Assets) 0.45% 0.45% 0.45% 0.45% 0.45% 0.45%
Distribution and Service (12b-1) Fees 0.20% 0.84% [1] 0.10% 0.00% 0.00% 0.45%
Component1 Other Expenses 0.03% 0.03% 0.03% 0.03% 0.03% 0.03%
Component3 Other Expenses 0.12% 0.12% 0.12% 0.09% 0.12% 0.12%
Other Expenses (as a percentage of Assets): 0.15% 0.15% 0.15% 0.12% 0.15% 0.15%
Expenses (as a percentage of Assets) 0.80% 1.44% 0.70% 0.57% 0.60% 1.05%
[1]

The 12b-1 fee the Fund will pay on Class C shares will be a blended rate calculated based on (i) 1.00% of the Fund’s average daily net assets attributable to shares held for less than one year and (ii) 0.80% of the Fund’s average daily net assets attributable to shares held for one year or more. All Class C shareholders of the Fund will bear 12b-1 fees at the same rate.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Class C shares automatically convert to Class A shares after eight years. The expense example for Class C shares for the ten-year period reflects the conversion to Class A shares. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example by, Year, Caption [Text] If Shares Are Redeemed
Expense Example, With Redemption [Table]
Expense Example - Lord Abbett California Tax-Free Income Fund - USD ($)
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Expense Example, with Redemption, 1 Year $ 305 $ 247 $ 72 $ 58 $ 61 $ 107
Expense Example, with Redemption, 3 Years 475 456 224 183 192 334
Expense Example, with Redemption, 5 Years 659 787 390 318 335 579
Expense Example, with Redemption, 10 Years $ 1,193 $ 1,550 $ 871 $ 714 $ 750 $ 1,283
Expense Example, No Redemption, By Year, Caption [Text] If Shares Are Not Redeemed
Expense Example, No Redemption [Table]
Expense Example, No Redemption - Lord Abbett California Tax-Free Income Fund - USD ($)
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Expense Example, No Redemption, 1 Year $ 305 $ 147 $ 72 $ 58 $ 61 $ 107
Expense Example, No Redemption, 3 Years 475 456 224 183 192 334
Expense Example, No Redemption, 5 Years 659 787 390 318 335 579
Expense Example, No Redemption, 10 Years $ 1,193 $ 1,550 $ 871 $ 714 $ 750 $ 1,283
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block] 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 40% of the average value of its portfolio.
Portfolio Turnover, Rate 40.00%
Lord Abbett New Jersey Tax-Free Income Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] FEES AND EXPENSES
Expense Narrative [Text Block]

This table 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 certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds. More information about these and other discounts is available from your financial intermediary and in “Sales Charge Reductions and Waivers” on page 130 of the prospectus, Appendix A to the prospectus, titled “Intermediary-Specific Sales Charge Reductions and Waivers,” and “Purchases, Redemptions, Pricing, and Payments to Dealers” on page 9-1 of Part II of the statement of additional information (“SAI”).
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts if you and certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees (Fees paid directly from your investment)
Shareholder Fees [Table]
Shareholder Fees - Lord Abbett New Jersey Tax-Free Income Fund
Class A Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) [1] 2.25% 0.00% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) [1] 0.00% [2] 0.00% 0.00% 0.00% 0.00%
[1]

A shareholder transacting in share classes without a front-end sales charge may be required to pay a commission to its financial intermediary. Please contact your financial intermediary for more information about whether such a commission may apply to your transaction.
[2]

A contingent deferred sales charge (“CDSC”) of 1.00% may be assessed on certain Class A shares purchased or acquired without a sales charge if they are redeemed before the first day of the month in which the 18-month anniversary of the purchase falls.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lord Abbett New Jersey Tax-Free Income Fund
Class A Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Management Fees (as a percentage of Assets) 0.45% 0.45% 0.45% 0.45% 0.45%
Distribution and Service (12b-1) Fees 0.20% 0.10% 0.00% 0.00% 0.45%
Other Expenses (as a percentage of Assets): 0.18% 0.18% 0.15% 0.18% 0.18%
Expenses (as a percentage of Assets) 0.83% 0.73% 0.60% 0.63% 1.08%
Fee Waiver or Reimbursement [1] (0.01%) (0.01%) (0.01%) (0.01%) (0.01%)
Net Expenses (as a percentage of Assets) [1] 0.82% 0.72% 0.59% 0.62% 1.07%
Fee Waiver or Reimbursement over Assets, Date of Termination January 31, 2027 January 31, 2027 January 31, 2027 January 31, 2027 January 31, 2027
[1]

For the period from February 1, 2026 through January 31, 2027, Lord, Abbett & Co. LLC (“Lord Abbett”) has contractually agreed to waive its fees and reimburse expenses to the extent necessary to limit total net annual operating expenses, excluding any applicable 12b-1 fees, acquired fund fees and expenses, interest-related expenses, taxes, expenses related to litigation and potential litigation, and extraordinary expenses, to an annual rate of 0.59% for Class F3 and to an annual rate of 0.62% for each other class. This agreement may be terminated only by the Fund’s Board of Directors.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, giving effect to the fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example by, Year, Caption [Text] If Shares Are Redeemed
Expense Example, With Redemption [Table]
Expense Example - Lord Abbett New Jersey Tax-Free Income Fund - USD ($)
Class A Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Expense Example, with Redemption, 1 Year $ 307 $ 74 $ 60 $ 63 $ 109
Expense Example, with Redemption, 3 Years 483 232 191 201 342
Expense Example, with Redemption, 5 Years 674 405 334 350 595
Expense Example, with Redemption, 10 Years $ 1,226 $ 906 $ 749 $ 785 $ 1,316
Expense Example, No Redemption, By Year, Caption [Text] If Shares Are Not Redeemed
Expense Example, No Redemption [Table]
Expense Example, No Redemption - Lord Abbett New Jersey Tax-Free Income Fund - USD ($)
Class A Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Expense Example, No Redemption, 1 Year $ 307 $ 74 $ 60 $ 63 $ 109
Expense Example, No Redemption, 3 Years 483 232 191 201 342
Expense Example, No Redemption, 5 Years 674 405 334 350 595
Expense Example, No Redemption, 10 Years $ 1,226 $ 906 $ 749 $ 785 $ 1,316
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block] 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 27% of the average value of its portfolio.
Portfolio Turnover, Rate 27.00%
Lord Abbett New York Tax-Free Income Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] FEES AND EXPENSES
Expense Narrative [Text Block]

This table 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 certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds. More information about these and other discounts is available from your financial intermediary and in “Sales Charge Reductions and Waivers” on page 130 of the prospectus, Appendix A to the prospectus, titled “Intermediary-Specific Sales Charge Reductions and Waivers,” and “Purchases, Redemptions, Pricing, and Payments to Dealers” on page 9-1 of Part II of the statement of additional information (“SAI”).
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts if you and certain members of your family invest, or agree to invest in the future, at least $100,000 in the Lord Abbett Family of Funds.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees (Fees paid directly from your investment)
Shareholder Fees [Table]
Shareholder Fees - Lord Abbett New York Tax-Free Income Fund
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) [1] 2.25% 0.00% 0.00% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) [1] 0.00% [2] 1.00% [3] 0.00% 0.00% 0.00% 0.00%
[1]

A shareholder transacting in share classes without a front-end sales charge may be required to pay a commission to its financial intermediary. Please contact your financial intermediary for more information about whether such a commission may apply to your transaction.
[2]

A contingent deferred sales charge (“CDSC”) of 1.00% may be assessed on certain Class A shares purchased or acquired without a sales charge if they are redeemed before the first day of the month in which the 18-month anniversary of the purchase falls.
[3]

A CDSC of 1.00% may be assessed on Class C shares if they are redeemed before the first anniversary of their purchase.

Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lord Abbett New York Tax-Free Income Fund
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Management Fees (as a percentage of Assets) 0.45% 0.45% 0.45% 0.45% 0.45% 0.45%
Distribution and Service (12b-1) Fees 0.20% 0.84% [1] 0.10% 0.00% 0.00% 0.45%
Component1 Other Expenses 0.03% 0.03% 0.03% 0.03% 0.03% 0.03%
Component3 Other Expenses 0.13% 0.13% 0.13% 0.10% 0.13% 0.13%
Other Expenses (as a percentage of Assets): 0.16% 0.16% 0.16% 0.13% 0.16% 0.16%
Expenses (as a percentage of Assets) 0.81% 1.45% 0.71% 0.58% 0.61% 1.06%
[1]

The 12b-1 fee the Fund will pay on Class C shares will be a blended rate calculated based on (i) 1.00% of the Fund’s average daily net assets attributable to shares held for less than one year and (ii) 0.80% of the Fund’s average daily net assets attributable to shares held for one year or more. All Class C shareholders of the Fund will bear 12b-1 fees at the same rate.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Class C shares automatically convert to Class A shares after eight years. The expense example for Class C shares for the ten-year period reflects the conversion to Class A shares. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example by, Year, Caption [Text] If Shares Are Redeemed
Expense Example, With Redemption [Table]
Expense Example - Lord Abbett New York Tax-Free Income Fund - USD ($)
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Expense Example, with Redemption, 1 Year $ 306 $ 248 $ 73 $ 59 $ 62 $ 108
Expense Example, with Redemption, 3 Years 478 459 227 186 195 337
Expense Example, with Redemption, 5 Years 665 792 395 324 340 585
Expense Example, with Redemption, 10 Years $ 1,204 $ 1,561 $ 883 $ 726 $ 762 $ 1,294
Expense Example, No Redemption, By Year, Caption [Text] If Shares Are Not Redeemed
Expense Example, No Redemption [Table]
Expense Example, No Redemption - Lord Abbett New York Tax-Free Income Fund - USD ($)
Class A Shares
Class C Shares
Class F Shares
Class F3 Shares
Class I Shares
Class P Shares
Expense Example, No Redemption, 1 Year $ 306 $ 148 $ 73 $ 59 $ 62 $ 108
Expense Example, No Redemption, 3 Years 478 459 227 186 195 337
Expense Example, No Redemption, 5 Years 665 792 395 324 340 585
Expense Example, No Redemption, 10 Years $ 1,204 $ 1,561 $ 883 $ 726 $ 762 $ 1,294
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block] 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 29% of the average value of its portfolio.
Portfolio Turnover, Rate 29.00%