v3.26.1
Fees and Expenses
Feb. 28, 2026
USD ($)
FRANKLIN FEDERAL INTERMEDIATE-TERM TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 94 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 53 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN FEDERAL INTERMEDIATE-TERM TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 2.25% 2.25% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN FEDERAL INTERMEDIATE-TERM TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.46% 0.46% 0.46% 0.46% 0.46%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.12% 0.12% 0.12% 0.05% 0.12%
Expenses (as a percentage of Assets) 0.83% 0.68% 1.23% 0.51% 0.58%
Fee Waiver or Reimbursement [1] (0.12%) (0.12%) (0.12%) (0.11%) (0.12%)
Net Expenses (as a percentage of Assets) 0.71% 0.56% 1.11% 0.40% 0.46%
Fee Waiver or Reimbursement over Assets, Date of Termination June 30, 2027 June 30, 2027 June 30, 2027 June 30, 2027 June 30, 2027
[1] The investment manager has agreed to waive fees and/or reimburse operating expenses (excluding Rule 12b-1 fees, acquired fund fees and expenses, interest expense and certain non-routine expenses or costs, such as those relating to litigation, indemnification, reorganizations and liquidations) for the Fund so that the ratio of total annual fund operating expenses will not exceed 0.46% for each share class except Class R6 and 0.40% for Class R6. The investment manager has also agreed to reduce its fees to reflect reduced services resulting from the Fund’s investments in Franklin Templeton affiliated funds. In addition, transfer agency fees on Class R6 shares of the Fund have been capped so that transfer agency fees for that class do not exceed 0.02%. These contractual arrangements are expected to continue until June 30, 2027. During the terms, the fee waiver and expense reimbursement agreements may not be terminated or amended without approval of the board of trustees except to add series or classes, to reflect the extension of termination dates or to lower the waiver and expense limitation (which would result in lower fees for shareholders).
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN FEDERAL INTERMEDIATE-TERM TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 296 $ 281 $ 213 $ 41 $ 47
Expense Example, with Redemption, 3 Years 472 426 378 153 174
Expense Example, with Redemption, 5 Years 664 584 663 275 313
Expense Example, with Redemption, 10 Years $ 1,217 $ 1,041 $ 1,367 $ 631 $ 716
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN FEDERAL INTERMEDIATE-TERM TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 113
Expense Example, No Redemption, 3 Years 378
Expense Example, No Redemption, 5 Years 663
Expense Example, No Redemption, 10 Years $ 1,367
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 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 27.20% of the average value of its portfolio.
Portfolio Turnover, Rate 27.20%
FRANKLIN FEDERAL LIMITED-TERM TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 94 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 53 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN FEDERAL LIMITED-TERM TAX-FREE INCOME FUND
Class A
CLASS A1
Class R6
Advisor Class
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 2.25% 2.25% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN FEDERAL LIMITED-TERM TAX-FREE INCOME FUND
Class A
CLASS A1
Class R6
Advisor Class
Management Fees (as a percentage of Assets) 0.48% 0.48% 0.48% 0.48%
Distribution and Service (12b-1) Fees 0.25% 0.15% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.13% 0.13% 0.06% 0.13%
Acquired Fund Fees and Expenses 0.01% 0.01% 0.01% 0.01%
Expenses (as a percentage of Assets) [1] 0.87% 0.77% 0.55% 0.62%
Fee Waiver or Reimbursement [2] (0.21%) (0.21%) (0.17%) (0.21%)
Net Expenses (as a percentage of Assets) 0.66% 0.56% 0.38% 0.41%
Fee Waiver or Reimbursement over Assets, Date of Termination June 30, 2027 June 30, 2027 June 30, 2027 June 30, 2027
[1] Total annual Fund operating expenses differ from the ratio of expenses to average net assets shown in the Financial Highlights, which reflect the operating expenses of the Fund and do not include acquired fund fees and expenses.
[2] The investment manager has agreed to waive fees and/or reimburse operating expenses (excluding Rule 12b-1 fees, acquired fund fees and expenses, interest expense and certain non-routine expenses or costs, such as those relating to litigation, indemnification, reorganizations and liquidations) for the Fund so that the ratio of total annual fund operating expenses will not exceed 0.40% for each share class. The investment manager has also agreed to reduce its fees to reflect reduced services resulting from the Fund’s investments in Franklin Templeton affiliated funds. In addition, transfer agency fees on Class R6 shares of the Fund have been capped so that transfer agency fees for that class do not exceed 0.03%. These contractual arrangements are expected to continue until June 30, 2027. During the terms, the fee waiver and expense reimbursement agreements may not be terminated or amended without approval of the board of trustees except to add series or classes, to reflect the extension of termination dates or to lower the waiver and expense limitation (which would result in lower fees for shareholders).
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN FEDERAL LIMITED-TERM TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
Class R6
Advisor Class
Expense Example, with Redemption, 1 Year $ 291 $ 281 $ 39 $ 42
Expense Example, with Redemption, 3 Years 476 445 159 177
Expense Example, with Redemption, 5 Years 676 623 290 324
Expense Example, with Redemption, 10 Years $ 1,253 $ 1,139 $ 672 $ 753
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 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 33.07% of the average value of its portfolio.
Portfolio Turnover, Rate 33.07%
FRANKLIN HIGH YIELD TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 94 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 53 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN HIGH YIELD TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN HIGH YIELD TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.45% 0.45% 0.45% 0.45% 0.45%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.11% 0.11% 0.10% 0.06% 0.11%
Expenses (as a percentage of Assets) 0.81% 0.66% 1.20% 0.51% 0.56%
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN HIGH YIELD TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 455 $ 440 $ 222 $ 52 $ 57
Expense Example, with Redemption, 3 Years 624 579 381 163 179
Expense Example, with Redemption, 5 Years 808 730 660 284 312
Expense Example, with Redemption, 10 Years $ 1,340 $ 1,167 $ 1,346 $ 639 $ 701
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN HIGH YIELD TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 122
Expense Example, No Redemption, 3 Years 381
Expense Example, No Redemption, 5 Years 660
Expense Example, No Redemption, 10 Years $ 1,346
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 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 12.16% of the average value of its portfolio.
Portfolio Turnover, Rate 12.16%
FRANKLIN MASSACHUSETTS TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 94 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 53 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN MASSACHUSETTS TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN MASSACHUSETTS TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.53% 0.53% 0.53% 0.53% 0.53%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.16% 0.15% 0.14% 0.07% 0.16%
Expenses (as a percentage of Assets) 0.94% 0.78% 1.32% 0.60% 0.69%
Fee Waiver or Reimbursement [1] (0.04%) (0.03%) (0.02%) 0.00% (0.04%)
Net Expenses (as a percentage of Assets) 0.90% 0.75% 1.30% 0.60% 0.65%
Fee Waiver or Reimbursement over Assets, Date of Termination June 30, 2027 June 30, 2027 June 30, 2027 June 30, 2027 June 30, 2027
[1] The investment manager has agreed to waive fees and/or reimburse operating expenses (excluding Rule 12b-1 fees, acquired fund fees and expenses, interest expense and certain non-routine expenses or costs, such as those relating to litigation, indemnification, reorganizations and liquidations) for the Fund so that the ratio of total annual fund operating expenses will not exceed 0.65% for each share class. In addition, transfer agency fees on Class R6 shares of the Fund have been capped so that transfer agency fees for that class do not exceed 0.03%. These contractual arrangements are expected to continue until June 30, 2027. During the terms, the fee waiver and expense reimbursement agreements may not be terminated or amended without approval of the board of trustees except to add series or classes, to reflect the extension of termination dates or to lower the waiver and expense limitation (which would result in lower fees for shareholders).
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN MASSACHUSETTS TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 463 $ 449 $ 232 $ 61 $ 66
Expense Example, with Redemption, 3 Years 659 612 416 192 217
Expense Example, with Redemption, 5 Years 871 789 721 335 380
Expense Example, with Redemption, 10 Years $ 1,482 $ 1,301 $ 1,483 $ 750 $ 855
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN MASSACHUSETTS TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 132
Expense Example, No Redemption, 3 Years 416
Expense Example, No Redemption, 5 Years 721
Expense Example, No Redemption, 10 Years $ 1,483
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 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 21.12% of the average value of its portfolio.
Portfolio Turnover, Rate 21.12%
FRANKLIN NEW JERSEY TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 94 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 53 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN NEW JERSEY TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN NEW JERSEY TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.48% 0.48% 0.48% 0.48% 0.48%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.12% 0.12% 0.11% 0.05% 0.12%
Expenses (as a percentage of Assets) 0.85% 0.70% 1.24% 0.53% 0.60%
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN NEW JERSEY TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 459 $ 444 $ 226 $ 54 $ 61
Expense Example, with Redemption, 3 Years 637 591 393 170 192
Expense Example, with Redemption, 5 Years 829 750 680 297 335
Expense Example, with Redemption, 10 Years $ 1,385 $ 1,213 $ 1,392 $ 665 $ 750
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN NEW JERSEY TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 126
Expense Example, No Redemption, 3 Years 393
Expense Example, No Redemption, 5 Years 680
Expense Example, No Redemption, 10 Years $ 1,392
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 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 18.26% of the average value of its portfolio.
Portfolio Turnover, Rate 18.26%
FRANKLIN ALABAMA TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 120 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 55 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN ALABAMA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
Advisor Class
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN ALABAMA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
Advisor Class
Management Fees (as a percentage of Assets) 0.57% 0.57% 0.57% 0.57% 0.57%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.15% 0.15% 0.14% 0.14% 0.15%
Expenses (as a percentage of Assets) 0.97% 0.82% 1.36% 0.71% 0.72%
Fee Waiver or Reimbursement [1] (0.07%) (0.07%) (0.06%) (0.09%) (0.07%)
Net Expenses (as a percentage of Assets) 0.90% 0.75% 1.30% 0.62% 0.65%
Fee Waiver or Reimbursement over Assets, Date of Termination June 30, 2027 June 30, 2027 June 30, 2027 June 30, 2027 June 30, 2027
[1] The investment manager has agreed to waive fees and/or reimburse operating expenses (excluding Rule 12b-1 fees, acquired fund fees and expenses, interest expense and certain non-routine expenses or costs, such as those relating to litigation, indemnification, reorganizations and liquidations) for the Fund so that the ratio of total annual fund operating expenses will not exceed 0.65% for each share class. In addition, transfer agency fees on Class R6 shares of the Fund have been capped so that transfer agency fees for that class do not exceed 0.03%. These contractual arrangements are expected to continue until June 30, 2027. During the terms, the fee waiver and expense reimbursement agreements may not be terminated or amended without approval of the board of trustees except to add series or classes, to reflect the extension of termination dates or to lower the waiver and expense limitation (which would result in lower fees for shareholders).
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN ALABAMA TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
Advisor Class
Expense Example, with Redemption, 1 Year $ 463 $ 449 $ 232 $ 63 $ 66
Expense Example, with Redemption, 3 Years 665 621 425 218 223
Expense Example, with Redemption, 5 Years 884 807 739 386 393
Expense Example, with Redemption, 10 Years $ 1,514 $ 1,345 $ 1,524 $ 874 $ 888
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN ALABAMA TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 132
Expense Example, No Redemption, 3 Years 425
Expense Example, No Redemption, 5 Years 739
Expense Example, No Redemption, 10 Years $ 1,524
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 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 15.17% of the average value of its portfolio.
Portfolio Turnover, Rate 15.17%
FRANKLIN GEORGIA TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 120 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 55 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN GEORGIA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
Advisor Class
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN GEORGIA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
Advisor Class
Management Fees (as a percentage of Assets) 0.54% 0.54% 0.54% 0.54% 0.54%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.13% 0.13% 0.12% 0.08% 0.13%
Expenses (as a percentage of Assets) 0.92% 0.77% 1.31% 0.62% 0.67%
Fee Waiver or Reimbursement [1] (0.02%) (0.02%) (0.01%) 0.00% (0.02%)
Net Expenses (as a percentage of Assets) 0.90% 0.75% 1.30% 0.62% 0.65%
Fee Waiver or Reimbursement over Assets, Date of Termination June 30, 2027 June 30, 2027 June 30, 2027 June 30, 2027 June 30, 2027
[1] The investment manager has agreed to waive fees and/or reimburse operating expenses (excluding Rule 12b-1 fees, acquired fund fees and expenses, interest expense and certain non-routine expenses or costs, such as those relating to litigation, indemnification, reorganizations and liquidations) for the Fund so that the ratio of total annual fund operating expenses will not exceed 0.65% for each share class. In addition, transfer agency fees on Class R6 shares of the Fund have been capped so that transfer agency fees for that class do not exceed 0.03%. These contractual arrangements are expected to continue until June 30, 2027. During the terms, the fee waiver and expense reimbursement agreements may not be terminated or amended without approval of the board of trustees except to add series or classes, to reflect the extension of termination dates or to lower the waiver and expense limitation (which would result in lower fees for shareholders).
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN GEORGIA TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
Advisor Class
Expense Example, with Redemption, 1 Year $ 463 $ 449 $ 232 $ 63 $ 66
Expense Example, with Redemption, 3 Years 655 610 413 198 212
Expense Example, with Redemption, 5 Years 863 785 716 345 371
Expense Example, with Redemption, 10 Years $ 1,462 $ 1,291 $ 1,470 $ 774 $ 832
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN GEORGIA TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 132
Expense Example, No Redemption, 3 Years 413
Expense Example, No Redemption, 5 Years 716
Expense Example, No Redemption, 10 Years $ 1,470
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 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 10.73% of the average value of its portfolio.
Portfolio Turnover, Rate 10.73%
FRANKLIN LOUISIANA TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 120 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 55 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN LOUISIANA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
Advisor Class
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN LOUISIANA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
Advisor Class
Management Fees (as a percentage of Assets) 0.55% 0.55% 0.55% 0.55% 0.55%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.15% 0.15% 0.14% 0.11% 0.15%
Expenses (as a percentage of Assets) 0.95% 0.80% 1.34% 0.66% 0.70%
Fee Waiver or Reimbursement [1] (0.05%) (0.05%) (0.04%) (0.04%) (0.05%)
Net Expenses (as a percentage of Assets) 0.90% 0.75% 1.30% 0.62% 0.65%
Fee Waiver or Reimbursement over Assets, Date of Termination June 30, 2027 June 30, 2027 June 30, 2027 June 30, 2027 June 30, 2027
[1] The investment manager has agreed to waive fees and/or reimburse operating expenses (excluding Rule 12b-1 fees, acquired fund fees and expenses, interest expense and certain non-routine expenses or costs, such as those relating to litigation, indemnification, reorganizations and liquidations) for the Fund so that the ratio of total annual fund operating expenses will not exceed 0.65% for each share class. In addition, transfer agency fees on Class R6 shares of the Fund have been capped so that transfer agency fees for that class do not exceed 0.03%. These contractual arrangements are expected to continue until June 30, 2027. During the terms, the fee waiver and expense reimbursement agreements may not be terminated or amended without approval of the board of trustees except to add series or classes, to reflect the extension of termination dates or to lower the waiver and expense limitation (which would result in lower fees for shareholders).
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN LOUISIANA TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
Advisor Class
Expense Example, with Redemption, 1 Year $ 463 $ 449 $ 232 $ 63 $ 66
Expense Example, with Redemption, 3 Years 661 616 421 206 219
Expense Example, with Redemption, 5 Years 875 798 731 363 385
Expense Example, with Redemption, 10 Years $ 1,491 $ 1,324 $ 1,503 $ 818 $ 865
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN LOUISIANA TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 132
Expense Example, No Redemption, 3 Years 421
Expense Example, No Redemption, 5 Years 731
Expense Example, No Redemption, 10 Years $ 1,503
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 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 13.78% of the average value of its portfolio.
Portfolio Turnover, Rate 13.78%
FRANKLIN MARYLAND TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 120 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 55 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN MARYLAND TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN MARYLAND TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.53% 0.53% 0.53% 0.53% 0.53%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.14% 0.14% 0.13% 0.07% 0.14%
Expenses (as a percentage of Assets) 0.92% 0.77% 1.31% 0.60% 0.67%
Fee Waiver or Reimbursement [1] (0.02%) (0.02%) (0.01%) 0.00% (0.02%)
Net Expenses (as a percentage of Assets) 0.90% 0.75% 1.30% 0.60% 0.65%
Fee Waiver or Reimbursement over Assets, Date of Termination June 30, 2027 June 30, 2027 June 30, 2027 June 30, 2027 June 30, 2027
[1] The investment manager has agreed to waive fees and/or reimburse operating expenses (excluding Rule 12b-1 fees, acquired fund fees and expenses, interest expense and certain non-routine expenses or costs, such as those relating to litigation, indemnification, reorganizations and liquidations) for the Fund so that the ratio of total annual fund operating expenses will not exceed 0.65% for each share class. In addition, transfer agency fees on Class R6 shares of the Fund have been capped so that transfer agency fees for that class do not exceed 0.03%. These contractual arrangements are expected to continue until June 30, 2027. During the terms, the fee waiver and expense reimbursement agreements may not be terminated or amended without approval of the board of trustees except to add series or classes, to reflect the extension of termination dates or to lower the waiver and expense limitation (which would result in lower fees for shareholders).
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN MARYLAND TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 463 $ 449 $ 232 $ 61 $ 66
Expense Example, with Redemption, 3 Years 655 610 413 192 212
Expense Example, with Redemption, 5 Years 863 785 716 335 371
Expense Example, with Redemption, 10 Years $ 1,462 $ 1,291 $ 1,470 $ 750 $ 832
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN MARYLAND TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 132
Expense Example, No Redemption, 3 Years 413
Expense Example, No Redemption, 5 Years 716
Expense Example, No Redemption, 10 Years $ 1,470
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 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 20.14% of the average value of its portfolio.
Portfolio Turnover, Rate 20.14%
FRANKLIN MISSOURI TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 120 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 55 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN MISSOURI TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN MISSOURI TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.49% 0.49% 0.49% 0.49% 0.49%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.10% 0.10% 0.09% 0.06% 0.10%
Expenses (as a percentage of Assets) 0.84% 0.69% 1.23% 0.55% 0.59%
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN MISSOURI TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 458 $ 443 $ 225 $ 56 $ 60
Expense Example, with Redemption, 3 Years 634 588 390 176 189
Expense Example, with Redemption, 5 Years 824 745 675 307 330
Expense Example, with Redemption, 10 Years $ 1,373 $ 1,201 $ 1,379 $ 689 $ 739
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN MISSOURI TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 125
Expense Example, No Redemption, 3 Years 390
Expense Example, No Redemption, 5 Years 675
Expense Example, No Redemption, 10 Years $ 1,379
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 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 12.36% of the average value of its portfolio.
Portfolio Turnover, Rate 12.36%
FRANKLIN NORTH CAROLINA TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 120 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 55 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN NORTH CAROLINA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN NORTH CAROLINA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.49% 0.49% 0.49% 0.49% 0.49%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.12% 0.12% 0.11% 0.07% 0.12%
Expenses (as a percentage of Assets) 0.86% 0.71% 1.25% 0.56% 0.61%
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN NORTH CAROLINA TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 459 $ 445 $ 227 $ 57 $ 62
Expense Example, with Redemption, 3 Years 639 594 396 179 195
Expense Example, with Redemption, 5 Years 833 756 686 312 340
Expense Example, with Redemption, 10 Years $ 1,395 $ 1,226 $ 1,404 $ 701 $ 762
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN NORTH CAROLINA TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 127
Expense Example, No Redemption, 3 Years 396
Expense Example, No Redemption, 5 Years 686
Expense Example, No Redemption, 10 Years $ 1,404
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 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 16.41% of the average value of its portfolio.
Portfolio Turnover, Rate 16.41%
FRANKLIN VIRGINIA TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 120 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 55 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN VIRGINIA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN VIRGINIA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.51% 0.51% 0.51% 0.51% 0.51%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.13% 0.13% 0.12% 0.06% 0.13%
Expenses (as a percentage of Assets) 0.89% 0.74% 1.28% 0.57% 0.64%
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN VIRGINIA TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 462 $ 448 $ 230 $ 58 $ 65
Expense Example, with Redemption, 3 Years 648 603 405 183 204
Expense Example, with Redemption, 5 Years 850 771 701 318 356
Expense Example, with Redemption, 10 Years $ 1,431 $ 1,259 $ 1,437 $ 713 $ 797
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN VIRGINIA TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 130
Expense Example, No Redemption, 3 Years 405
Expense Example, No Redemption, 5 Years 701
Expense Example, No Redemption, 10 Years $ 1,437
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 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 15.57% of the average value of its portfolio.
Portfolio Turnover, Rate 15.57%
FRANKLIN ARIZONA TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 133 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 58 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN ARIZONA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN ARIZONA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.49% 0.49% 0.49% 0.49% 0.49%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.09% 0.09% 0.08% 0.06% 0.09%
Expenses (as a percentage of Assets) 0.83% 0.68% 1.22% 0.55% 0.58%
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN ARIZONA TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 457 $ 442 $ 224 $ 56 $ 59
Expense Example, with Redemption, 3 Years 630 585 387 176 186
Expense Example, with Redemption, 5 Years 818 740 670 307 323
Expense Example, with Redemption, 10 Years $ 1,362 $ 1,191 $ 1,369 $ 689 $ 725
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN ARIZONA TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 124
Expense Example, No Redemption, 3 Years 387
Expense Example, No Redemption, 5 Years 670
Expense Example, No Redemption, 10 Years $ 1,369
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 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 17.42% of the average value of its portfolio.
Portfolio Turnover, Rate 17.42%
FRANKLIN COLORADO TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 133 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 58 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN COLORADO TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN COLORADO TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.50% 0.50% 0.50% 0.50% 0.50%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.12% 0.12% 0.11% 0.08% 0.12%
Expenses (as a percentage of Assets) 0.87% 0.72% 1.26% 0.58% 0.62%
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN COLORADO TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 460 $ 446 $ 228 $ 59 $ 63
Expense Example, with Redemption, 3 Years 642 597 399 186 198
Expense Example, with Redemption, 5 Years 838 761 691 323 345
Expense Example, with Redemption, 10 Years $ 1,406 $ 1,236 $ 1,414 $ 725 $ 774
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN COLORADO TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 128
Expense Example, No Redemption, 3 Years 399
Expense Example, No Redemption, 5 Years 691
Expense Example, No Redemption, 10 Years $ 1,414
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 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 11.43% of the average value of its portfolio.
Portfolio Turnover, Rate 11.43%
FRANKLIN CONNECTICUT TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 133 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 58 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN CONNECTICUT TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN CONNECTICUT TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.59% 0.59% 0.59% 0.59% 0.59%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.17% 0.17% 0.17% 0.11% 0.18%
Expenses (as a percentage of Assets) 1.01% 0.86% 1.41% 0.70% 0.77%
Fee Waiver or Reimbursement [1] (0.11%) (0.11%) (0.11%) (0.08%) (0.12%)
Net Expenses (as a percentage of Assets) 0.90% 0.75% 1.30% 0.62% 0.65%
Fee Waiver or Reimbursement over Assets, Date of Termination June 30, 2027 June 30, 2027 June 30, 2027 June 30, 2027 June 30, 2027
[1] The investment manager has agreed to waive fees and/or reimburse operating expenses (excluding Rule 12b-1 fees, acquired fund fees and expenses, interest expense and certain non-routine expenses or costs, such as those relating to litigation, indemnification, reorganizations and liquidations) for the Fund so that the ratio of total annual fund operating expenses will not exceed 0.65% for each share class. In addition, transfer agency fees on Class R6 shares of the Fund have been capped so that transfer agency fees for that class do not exceed 0.03%. These contractual arrangements are expected to continue until June 30, 2027. During the terms, the fee waiver and expense reimbursement agreements may not be terminated or amended without approval of the board of trustees except to add series or classes, to reflect the extension of termination dates or to lower the waiver and expense limitation (which would result in lower fees for shareholders).
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN CONNECTICUT TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 463 $ 449 $ 232 $ 63 $ 66
Expense Example, with Redemption, 3 Years 673 629 435 216 234
Expense Example, with Redemption, 5 Years 901 824 760 382 416
Expense Example, with Redemption, 10 Years $ 1,556 $ 1,387 $ 1,572 $ 863 $ 943
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN CONNECTICUT TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 132
Expense Example, No Redemption, 3 Years 435
Expense Example, No Redemption, 5 Years 760
Expense Example, No Redemption, 10 Years $ 1,572
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 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 10.75% of the average value of its portfolio.
Portfolio Turnover, Rate 10.75%
FRANKLIN MICHIGAN TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 133 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 58 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN MICHIGAN TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN MICHIGAN TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.49% 0.49% 0.49% 0.49% 0.49%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.10% 0.11% 0.10% 0.06% 0.10%
Expenses (as a percentage of Assets) 0.84% 0.70% 1.24% 0.55% 0.59%
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN MICHIGAN TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 458 $ 444 $ 226 $ 56 $ 60
Expense Example, with Redemption, 3 Years 634 591 393 176 189
Expense Example, with Redemption, 5 Years 824 750 680 307 330
Expense Example, with Redemption, 10 Years $ 1,373 $ 1,213 $ 1,389 $ 689 $ 739
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN MICHIGAN TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 126
Expense Example, No Redemption, 3 Years 393
Expense Example, No Redemption, 5 Years 680
Expense Example, No Redemption, 10 Years $ 1,389
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 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 14.13% of the average value of its portfolio.
Portfolio Turnover, Rate 14.13%
FRANKLIN MINNESOTA TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 133 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 58 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN MINNESOTA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN MINNESOTA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.49% 0.49% 0.49% 0.49% 0.49%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.11% 0.11% 0.11% 0.06% 0.11%
Expenses (as a percentage of Assets) 0.85% 0.70% 1.25% 0.55% 0.60%
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN MINNESOTA TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 459 $ 444 $ 227 $ 56 $ 61
Expense Example, with Redemption, 3 Years 637 591 396 176 192
Expense Example, with Redemption, 5 Years 829 750 686 307 335
Expense Example, with Redemption, 10 Years $ 1,385 $ 1,213 $ 1,400 $ 689 $ 750
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN MINNESOTA TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 127
Expense Example, No Redemption, 3 Years 396
Expense Example, No Redemption, 5 Years 686
Expense Example, No Redemption, 10 Years $ 1,400
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 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 5.26% of the average value of its portfolio.
Portfolio Turnover, Rate 5.26%
FRANKLIN OHIO TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 133 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 58 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN OHIO TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN OHIO TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.48% 0.48% 0.48% 0.48% 0.48%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.09% 0.09% 0.09% 0.06% 0.09%
Expenses (as a percentage of Assets) 0.82% 0.67% 1.22% 0.54% 0.57%
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN OHIO TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 456 $ 441 $ 224 $ 55 $ 58
Expense Example, with Redemption, 3 Years 627 582 387 173 183
Expense Example, with Redemption, 5 Years 813 735 670 302 318
Expense Example, with Redemption, 10 Years $ 1,350 $ 1,178 $ 1,366 $ 678 $ 713
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN OHIO TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 124
Expense Example, No Redemption, 3 Years 387
Expense Example, No Redemption, 5 Years 670
Expense Example, No Redemption, 10 Years $ 1,366
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 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 10.45% of the average value of its portfolio.
Portfolio Turnover, Rate 10.45%
FRANKLIN OREGON TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 133 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 58 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN OREGON TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN OREGON TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.48% 0.48% 0.48% 0.48% 0.48%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.09% 0.09% 0.08% 0.05% 0.09%
Expenses (as a percentage of Assets) 0.82% 0.67% 1.21% 0.53% 0.57%
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN OREGON TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 456 $ 441 $ 223 $ 54 $ 58
Expense Example, with Redemption, 3 Years 627 582 384 170 183
Expense Example, with Redemption, 5 Years 813 735 665 297 318
Expense Example, with Redemption, 10 Years $ 1,350 $ 1,178 $ 1,357 $ 665 $ 713
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN OREGON TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 123
Expense Example, No Redemption, 3 Years 384
Expense Example, No Redemption, 5 Years 665
Expense Example, No Redemption, 10 Years $ 1,357
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 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 16.43% of the average value of its portfolio.
Portfolio Turnover, Rate 16.43%
FRANKLIN PENNSYLVANIA TAX-FREE INCOME FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), 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 in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 133 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 58 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN PENNSYLVANIA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 3.75% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $250,000 or more (see "Investments of $250,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of 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 - FRANKLIN PENNSYLVANIA TAX-FREE INCOME FUND
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.49% 0.49% 0.49% 0.49% 0.49%
Distribution and Service (12b-1) Fees 0.25% 0.10% 0.65% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.11% 0.11% 0.10% 0.06% 0.11%
Expenses (as a percentage of Assets) 0.85% 0.70% 1.24% 0.55% 0.60%
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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN PENNSYLVANIA TAX-FREE INCOME FUND - USD ($)
Class A
CLASS A1
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 459 $ 444 $ 226 $ 56 $ 61
Expense Example, with Redemption, 3 Years 637 591 393 176 192
Expense Example, with Redemption, 5 Years 829 750 680 307 335
Expense Example, with Redemption, 10 Years $ 1,385 $ 1,213 $ 1,392 $ 689 $ 750
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN PENNSYLVANIA TAX-FREE INCOME FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 126
Expense Example, No Redemption, 3 Years 393
Expense Example, No Redemption, 5 Years 680
Expense Example, No Redemption, 10 Years $ 1,392
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 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 15.53% of the average value of its portfolio.
Portfolio Turnover, Rate 15.53%