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LabelElementValue
Risk/Return:rr_RiskReturnAbstract 
Document Typedei_DocumentType485BPOS
Document Period End Datedei_DocumentPeriodEndDateMay 31, 2011
Registrant Namedei_EntityRegistrantNamePUTNAM ARIZONA TAX EXEMPT INCOME FUND
Central Index Keydei_EntityCentralIndexKey0000869392
Amendment Flagdei_AmendmentFlagfalse
Document Creation Datedei_DocumentCreationDateSep. 28, 2011
Document Effective Datedei_DocumentEffectiveDateSep. 30, 2011
Prospectus Daterr_ProspectusDateSep. 30, 2011
Risk/Return [Heading]rr_RiskReturnHeadingFund summaries
Putnam Arizona Tax Exempt Income Fund | Putnam Arizona Tax Exempt Income Fund
 
Risk/Return:rr_RiskReturnAbstract 
Risk/Return [Heading]rr_RiskReturnHeadingPutnam Arizona Tax Exempt Income Fund
Objective [Heading]rr_ObjectiveHeadingGoal
Objective, Primary [Text Block]rr_ObjectivePrimaryTextBlockPutnam Arizona Tax Exempt Income Fund seeks as high a level of current income exempt from federal income tax and Arizona personal income tax as we believe is consistent with preservation of capital.
Fees and expensespateif869392_FundFeesAndExpensesAbstract 
Expense [Heading]rr_ExpenseHeadingFees and expenses
Expense Narrative [Text Block]rr_ExpenseNarrativeTextBlockThe following table describes the fees and expenses you may pay if you buy and hold shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in class A shares or $50,000 in class M shares of Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 37 of the fund’s prospectus and in How to buy shares beginning on page II-1 of the fund’s statement of additional information (SAI).
Expense Breakpoint Discountspateif869392_ExpenseBreakpointDiscountsAbstract 
Expense Breakpoint Discounts [Text]rr_ExpenseBreakpointDiscountsYou may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in class A shares or $50,000 in class M shares of Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 37 of the fund’s prospectus and in How to buy shares beginning on page II-1 of the fund’s statement of additional information (SAI).
Expense Breakpoint, Minimum Investment Required [Amount]rr_ExpenseBreakpointMinimumInvestmentRequiredAmount 50,000
Shareholder feesrr_ShareholderFeesAbstract 
Shareholder Fees Caption [Text]rr_ShareholderFeesCaptionShareholder fees (fees paid directly from your investment)
Annual fund operating expensesrr_OperatingExpensesAbstract 
Operating Expenses Caption [Text]rr_OperatingExpensesCaptionAnnual fund operating expenses (expenses you pay each year as a percentage of the value of your investment)
Expense Examplerr_ExpenseExampleAbstract 
Expense Example [Heading]rr_ExpenseExampleHeadingExample
Expense Example Narrative [Text Block]rr_ExpenseExampleNarrativeTextBlockThe following hypothetical example is intended to help you compare the cost of investing in the fund with the cost of investing in other funds. It assumes that you invest $10,000 in the fund for the time periods indicated and then, except as indicated, redeem all your shares at the end of those periods. It assumes a 5% return on your investment each year and that the fund’s operating expenses remain the same. Your actual costs may be higher or lower.
Portfolio turnoverpateif869392_PortfolioTurnoverAltAbstract 
Portfolio Turnover [Heading]rr_PortfolioTurnoverHeadingPortfolio turnover
Portfolio Turnover [Text Block]rr_PortfolioTurnoverTextBlockThe fund pays transaction-related costs when it buys and sells securities (or “turns over” its portfolio). A higher turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or the above example, affect fund performance. The fund’s turnover rate in the most recent fiscal year was 11%.
Portfolio Turnover, Raterr_PortfolioTurnoverRate11.00%
Strategy [Heading]rr_StrategyHeadingInvestments
Strategy Narrative [Text Block]rr_StrategyNarrativeTextBlockWe invest mainly in bonds that pay interest that is exempt from federal income tax and Arizona personal income tax (but that may be subject to federal alternative minimum tax (AMT)), are investment-grade in quality, and have intermediate- to long-term maturities (three years or longer). We may consider, among other factors, credit, interest rate and prepayment risks, as well as general market conditions, when deciding whether to buy or sell investments.
Strategy Portfolio Concentration [Text]rr_StrategyPortfolioConcentrationWe invest mainly in bonds that pay interest that is exempt from federal income tax and Arizona personal income tax (but that may be subject to federal alternative minimum tax (AMT)), are investment-grade in quality, and have intermediate- to long-term maturities (three years or longer).
Risk [Heading]rr_RiskHeadingRisks
Risk Narrative [Text Block]rr_RiskNarrativeTextBlock

It is important to understand that you can lose money by investing in the fund.

The prices of bonds in the fund’s portfolio may fall or fail to rise over extended periods of time for a variety of reasons, including both general financial market conditions and factors related to a specific issuer. The risks associated with bond investments include interest rate risk, which means the prices of the fund’s investments are likely to fall if interest rates rise. Bond investments also are subject to credit risk, which is the risk that the issuers of the fund’s investments may default on payment of interest or principal. Since the fund invests in tax-exempt bonds, which, to be treated as tax-exempt under the Internal Revenue Code, may be issued only by limited types of issuers for limited types of projects, the fund’s investments may be focused in certain market segments. Consequently, the fund may be more vulnerable to fluctuations in the values of the securities it holds than a fund that invests more broadly. Interest rate risk is generally greater for longer-term bonds, and credit risk is generally greater for below-investment-grade bonds. Investments in a single state carry risks of vulnerability to common economic forces and other factors affecting the state’s tax-exempt investments, which may result in greater losses and volatility. Interest the fund receives might be taxable.

The fund may not achieve its goal, and it is not intended to be a complete investment program. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Risk Lose Money [Text]rr_RiskLoseMoneyIt is important to understand that you can lose money by investing in the fund.
Risk Not Insured Depository Institution [Text]rr_RiskNotInsuredDepositoryInstitutionAn investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Performancepateif869392_FundPastPerformanceAbstract 
Bar Chart and Performance Table [Heading]rr_BarChartAndPerformanceTableHeadingPerformance
Performance Narrative [Text Block]rr_PerformanceNarrativeTextBlockThe performance information below gives some indication of the risks associated with an investment in the fund by showing the fund’s performance year to year and over time. The bar chart does not reflect the impact of sales charges. If it did, performance would be lower. Please remember that past performance is not necessarily an indication of future results. Monthly performance figures for the fund are available at putnam.com.
Performance Information Illustrates Variability of Returns [Text]rr_PerformanceInformationIllustratesVariabilityOfReturnsThe performance information below gives some indication of the risks associated with an investment in the fund by showing the fund’s performance year to year and over time.
Bar Chart Does Not Reflect Sales Loads [Text]rr_BarChartDoesNotReflectSalesLoadsThe bar chart does not reflect the impact of sales charges. If it did, performance would be lower.
Performance Past Does Not Indicate Future [Text]rr_PerformancePastDoesNotIndicateFuturePlease remember that past performance is not necessarily an indication of future results.
Performance Table Closing [Text Block]rr_PerformanceTableClosingTextBlockMonthly performance figures for the fund are available at putnam.com.
Performance Availability Website Address [Text]rr_PerformanceAvailabilityWebSiteAddressputnam.com
Annual Total Returnsrr_BarChartTableAbstract 
Bar Chart [Heading]rr_BarChartHeadingAnnual total returns for class A shares before sales charges
Bar Chart Closing [Text Block]rr_BarChartClosingTextBlock

Year-to-date performance

through 6/30/11

3.01%

Best calendar quarter

Q3 2009

7.95%

Worst calendar quarter

Q3 2008

-4.51%

Year to Date Return, Labelrr_YearToDateReturnLabelYear-to-date performance through
Bar Chart, Year to Date Return, Daterr_BarChartYearToDateReturnDateJun. 30, 2011
Bar Chart, Year to Date Returnrr_BarChartYearToDateReturn3.01%
Highest Quarterly Return, Labelrr_HighestQuarterlyReturnLabelBest calendar quarter
Highest Quarterly Return, Daterr_BarChartHighestQuarterlyReturnDateSep. 30, 2009
Highest Quarterly Returnrr_BarChartHighestQuarterlyReturn7.95%
Lowest Quarterly Return, Labelrr_LowestQuarterlyReturnLabelWorst calendar quarter
Lowest Quarterly Return, Daterr_BarChartLowestQuarterlyReturnDateSep. 30, 2008
Lowest Quarterly Returnrr_BarChartLowestQuarterlyReturn(4.51%)
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Captionrr_AverageAnnualReturnCaptionAverage annual total returns after sales charges (for periods ending 12/31/10)
Performance Table Narrativerr_PerformanceTableNarrativeTextBlock

After-tax returns reflect the historical highest individual federal marginal income tax rates and do not reflect state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are shown for class A shares only and will vary for other classes. These after-tax returns do not apply if you hold your fund shares through a 401(k) plan, an IRA, or another tax-advantaged arrangement.

Class B share performance does not reflect conversion to class A shares.

Performance Table Uses Highest Federal Raterr_PerformanceTableUsesHighestFederalRateAfter-tax returns reflect the historical highest individual federal marginal income tax rates and do not reflect state and local taxes.
Performance Table Not Relevant to Tax Deferredrr_PerformanceTableNotRelevantToTaxDeferredActual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Performance Table One Class of after Tax Shown [Text]rr_PerformanceTableOneClassOfAfterTaxShownAfter-tax returns are shown for class A shares only and will vary for other classes.
Putnam Arizona Tax Exempt Income Fund | Putnam Arizona Tax Exempt Income Fund | Class A
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass A
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice4.00%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther1.00%[1]
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass A
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.21%[2]
Other expensesrr_OtherExpensesOverAssets0.18%
Total annual fund operating expensesrr_ExpensesOverAssets0.83%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass A
1 yearrr_ExpenseExampleYear01481
3 yearsrr_ExpenseExampleYear03654
5 yearsrr_ExpenseExampleYear05842
10 yearsrr_ExpenseExampleYear101,384
Annual Total Returnsrr_BarChartTableAbstract 
2001rr_AnnualReturn20014.76%
2002rr_AnnualReturn20028.07%
2003rr_AnnualReturn20035.23%
2004rr_AnnualReturn20043.50%
2005rr_AnnualReturn20053.21%
2006rr_AnnualReturn20064.00%
2007rr_AnnualReturn20072.35%
2008rr_AnnualReturn2008(6.05%)
2009rr_AnnualReturn200915.70%
2010rr_AnnualReturn20102.41%
Putnam Arizona Tax Exempt Income Fund | Putnam Arizona Tax Exempt Income Fund | Class B
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass B
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther5.00%[3]
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass B
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.85%
Other expensesrr_OtherExpensesOverAssets0.18%
Total annual fund operating expensesrr_ExpensesOverAssets1.47%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass B
1 yearrr_ExpenseExampleYear01650
3 yearsrr_ExpenseExampleYear03765
5 yearsrr_ExpenseExampleYear051,003
10 yearsrr_ExpenseExampleYear101,584
Expense Example, No Redemptionrr_ExpenseExampleNoRedemptionAbstract 
Share classrr_ExpenseExampleNoRedemptionByYearColumnNameClass B (no redemption)
1 yearrr_ExpenseExampleNoRedemptionYear01150
3 yearsrr_ExpenseExampleNoRedemptionYear03465
5 yearsrr_ExpenseExampleNoRedemptionYear05803
10 yearsrr_ExpenseExampleNoRedemptionYear101,584
Putnam Arizona Tax Exempt Income Fund | Putnam Arizona Tax Exempt Income Fund | Class C
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass C
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther1.00%
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass C
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets1.00%
Other expensesrr_OtherExpensesOverAssets0.18%
Total annual fund operating expensesrr_ExpensesOverAssets1.62%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass C
1 yearrr_ExpenseExampleYear01265
3 yearsrr_ExpenseExampleYear03511
5 yearsrr_ExpenseExampleYear05881
10 yearsrr_ExpenseExampleYear101,922
Expense Example, No Redemptionrr_ExpenseExampleNoRedemptionAbstract 
Share classrr_ExpenseExampleNoRedemptionByYearColumnNameClass C (no redemption)
1 yearrr_ExpenseExampleNoRedemptionYear01165
3 yearsrr_ExpenseExampleNoRedemptionYear03511
5 yearsrr_ExpenseExampleNoRedemptionYear05881
10 yearsrr_ExpenseExampleNoRedemptionYear101,922
Putnam Arizona Tax Exempt Income Fund | Putnam Arizona Tax Exempt Income Fund | Class M
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass M
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice3.25%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther none
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass M
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.50%
Other expensesrr_OtherExpensesOverAssets0.18%
Total annual fund operating expensesrr_ExpensesOverAssets1.12%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass M
1 yearrr_ExpenseExampleYear01435
3 yearsrr_ExpenseExampleYear03669
5 yearsrr_ExpenseExampleYear05922
10 yearsrr_ExpenseExampleYear101,644
Putnam Arizona Tax Exempt Income Fund | Putnam Arizona Tax Exempt Income Fund | Class Y
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass Y
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther none
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass Y
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets 
Other expensesrr_OtherExpensesOverAssets0.18%
Total annual fund operating expensesrr_ExpensesOverAssets0.62%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass Y
1 yearrr_ExpenseExampleYear0163
3 yearsrr_ExpenseExampleYear03199
5 yearsrr_ExpenseExampleYear05346
10 yearsrr_ExpenseExampleYear10774
Putnam Arizona Tax Exempt Income Fund | Putnam Arizona Tax Exempt Income Fund | before taxes | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(1.63%)
5 yearsrr_AverageAnnualReturnYear052.63%
10 yearsrr_AverageAnnualReturnYear103.76%
Putnam Arizona Tax Exempt Income Fund | Putnam Arizona Tax Exempt Income Fund | before taxes | Class B
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass B
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(3.16%)
5 yearsrr_AverageAnnualReturnYear052.44%
10 yearsrr_AverageAnnualReturnYear103.51%
Putnam Arizona Tax Exempt Income Fund | Putnam Arizona Tax Exempt Income Fund | before taxes | Class C
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass C
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear010.77%
5 yearsrr_AverageAnnualReturnYear052.69%
10 yearsrr_AverageAnnualReturnYear103.41%
Putnam Arizona Tax Exempt Income Fund | Putnam Arizona Tax Exempt Income Fund | before taxes | Class M
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass M
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(1.17%)
5 yearsrr_AverageAnnualReturnYear052.49%
10 yearsrr_AverageAnnualReturnYear103.55%
Putnam Arizona Tax Exempt Income Fund | Putnam Arizona Tax Exempt Income Fund | before taxes | Class Y
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass Y
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear012.78%
5 yearsrr_AverageAnnualReturnYear053.60%
10 yearsrr_AverageAnnualReturnYear104.27%
Putnam Arizona Tax Exempt Income Fund | Putnam Arizona Tax Exempt Income Fund | after taxes on distributions | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelafter taxes on distributions
1 yearrr_AverageAnnualReturnYear01(1.63%)
5 yearsrr_AverageAnnualReturnYear052.59%
10 yearsrr_AverageAnnualReturnYear103.74%
Putnam Arizona Tax Exempt Income Fund | Putnam Arizona Tax Exempt Income Fund | after taxes on distributions and sale of fund shares | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelafter taxes on distributions and sale of fund shares
1 yearrr_AverageAnnualReturnYear010.40%
5 yearsrr_AverageAnnualReturnYear052.84%
10 yearsrr_AverageAnnualReturnYear103.83%
Putnam Arizona Tax Exempt Income Fund | Putnam Arizona Tax Exempt Income Fund | Barclays Capital Municipal Bond Index
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Labelrr_AverageAnnualReturnLabelBarclays Capital Municipal Bond Index
Index No Deduction for Fees, Expenses, Taxes [Text]rr_IndexNoDeductionForFeesExpensesTaxes(no deduction for fees, expenses or taxes)
1 yearrr_AverageAnnualReturnYear012.38%
5 yearsrr_AverageAnnualReturnYear054.09%
10 yearsrr_AverageAnnualReturnYear104.83%
Putnam Massachusetts Tax Exempt Income Fund | Putnam Massachusetts Tax Exempt Income Fund
 
Risk/Return:rr_RiskReturnAbstract 
Risk/Return [Heading]rr_RiskReturnHeadingPutnam Massachusetts Tax Exempt Income Fund
Objective [Heading]rr_ObjectiveHeadingGoal
Objective, Primary [Text Block]rr_ObjectivePrimaryTextBlockPutnam Massachusetts Tax Exempt Income Fund seeks as high a level of current income exempt from federal income tax and Massachusetts personal income tax as we believe is consistent with preservation of capital.
Fees and expensespateif869392_FundFeesAndExpensesAbstract 
Expense [Heading]rr_ExpenseHeadingFees and expenses
Expense Narrative [Text Block]rr_ExpenseNarrativeTextBlockThe following table describes the fees and expenses you may pay if you buy and hold shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in class A shares or $50,000 in class M shares of Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 37 of the fund’s prospectus and in How to buy shares beginning on page II-1 of the SAI.
Expense Breakpoint Discountspateif869392_ExpenseBreakpointDiscountsAbstract 
Expense Breakpoint Discounts [Text]rr_ExpenseBreakpointDiscountsYou may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in class A shares or $50,000 in class M shares of Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 37 of the fund’s prospectus and in How to buy shares beginning on page II-1 of the SAI.
Expense Breakpoint, Minimum Investment Required [Amount]rr_ExpenseBreakpointMinimumInvestmentRequiredAmount50,000
Shareholder feesrr_ShareholderFeesAbstract 
Shareholder Fees Caption [Text]rr_ShareholderFeesCaptionShareholder fees (fees paid directly from your investment)
Annual fund operating expensesrr_OperatingExpensesAbstract 
Operating Expenses Caption [Text]rr_OperatingExpensesCaptionAnnual fund operating expenses (expenses you pay each year as a percentage of the value of your investment)
Expense Examplerr_ExpenseExampleAbstract 
Expense Example [Heading]rr_ExpenseExampleHeadingExample
Expense Example Narrative [Text Block]rr_ExpenseExampleNarrativeTextBlockThe following hypothetical example is intended to help you compare the cost of investing in the fund with the cost of investing in other funds. It assumes that you invest $10,000 in the fund for the time periods indicated and then, except as indicated, redeem all your shares at the end of those periods. It assumes a 5% return on your investment each year and that the fund’s operating expenses remain the same. Your actual costs may be higher or lower.
Portfolio turnoverpateif869392_PortfolioTurnoverAltAbstract 
Portfolio Turnover [Heading]rr_PortfolioTurnoverHeadingPortfolio turnover
Portfolio Turnover [Text Block]rr_PortfolioTurnoverTextBlockThe fund pays transaction-related costs when it buys and sells securities (or “turns over” its portfolio). A higher turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or the above example, affect fund performance. The fund’s turnover rate in the most recent fiscal year was 12%.
Portfolio Turnover, Raterr_PortfolioTurnoverRate12.00%
Strategy [Heading]rr_StrategyHeadingInvestments
Strategy Narrative [Text Block]rr_StrategyNarrativeTextBlockWe invest mainly in bonds that pay interest that is exempt from federal income tax and Massachusetts personal income tax (but that may be subject to federal alternative minimum tax (AMT)), are investment-grade in quality, and have intermediate- to long-term maturities (three years or longer). We may consider, among other factors, credit, interest rate and prepayment risks, as well as general market conditions, when deciding whether to buy or sell investments.
Strategy Portfolio Concentration [Text]rr_StrategyPortfolioConcentrationWe invest mainly in bonds that pay interest that is exempt from federal income tax and Massachusetts personal income tax (but that may be subject to federal alternative minimum tax (AMT)), are investment-grade in quality, and have intermediate- to long-term maturities (three years or longer).
Risk [Heading]rr_RiskHeadingRisks
Risk Narrative [Text Block]rr_RiskNarrativeTextBlock

It is important to understand that you can lose money by investing in the fund.

The prices of bonds in the fund’s portfolio may fall or fail to rise over extended periods of time for a variety of reasons, including both general financial market conditions and factors related to a specific issuer. The risks associated with bond investments include interest rate risk, which means the prices of the fund’s investments are likely to fall if interest rates rise. Bond investments also are subject to credit risk, which is the risk that the issuers of the fund’s investments may default on payment of interest or principal. Since the fund invests in tax-exempt bonds, which, to be treated as tax-exempt under the Internal Revenue Code, may be issued only by limited types of issuers for limited types of projects, the fund’s investments may be focused in certain market segments. Consequently, the fund may be more vulnerable to fluctuations in the values of the securities it holds than a fund that invests more broadly. Interest rate risk is generally greater for longer-term bonds, and credit risk is generally greater for below-investment-grade bonds. Investments in a single state carry risks of vulnerability to common economic forces and other factors affecting the state’s tax-exempt investments, which may result in greater losses and volatility. Interest the fund receives might be taxable.

The fund may not achieve its goal, and it is not intended to be a complete investment program. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Risk Lose Money [Text]rr_RiskLoseMoneyIt is important to understand that you can lose money by investing in the fund.
Risk Not Insured Depository Institution [Text]rr_RiskNotInsuredDepositoryInstitutionAn investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Performancepateif869392_FundPastPerformanceAbstract 
Bar Chart and Performance Table [Heading]rr_BarChartAndPerformanceTableHeadingPerformance
Performance Narrative [Text Block]rr_PerformanceNarrativeTextBlockThe performance information below gives some indication of the risks associated with an investment in the fund by showing the fund’s performance year to year and over time. The bar chart does not reflect the impact of sales charges. If it did, performance would be lower. Please remember that past performance is not necessarily an indication of future results. Monthly performance figures for the fund are available at putnam.com.
Performance Information Illustrates Variability of Returns [Text]rr_PerformanceInformationIllustratesVariabilityOfReturnsThe performance information below gives some indication of the risks associated with an investment in the fund by showing the fund’s performance year to year and over time.
Bar Chart Does Not Reflect Sales Loads [Text]rr_BarChartDoesNotReflectSalesLoadsThe bar chart does not reflect the impact of sales charges. If it did, performance would be lower.
Performance Past Does Not Indicate Future [Text]rr_PerformancePastDoesNotIndicateFuturePlease remember that past performance is not necessarily an indication of future results.
Performance Table Closing [Text Block]rr_PerformanceTableClosingTextBlockMonthly performance figures for the fund are available at putnam.com.
Performance Availability Website Address [Text]rr_PerformanceAvailabilityWebSiteAddressputnam.com
Annual Total Returnsrr_BarChartTableAbstract 
Bar Chart [Heading]rr_BarChartHeadingAnnual total returns for class A shares before sales charges
Bar Chart Closing [Text Block]rr_BarChartClosingTextBlock

Year-to-date performance

through 6/30/11

4.07%

Best calendar quarter

Q3 2009

8.19%

Worst calendar quarter

Q4 2010

-5.07%

Year to Date Return, Labelrr_YearToDateReturnLabelYear-to-date performance through
Bar Chart, Year to Date Return, Daterr_BarChartYearToDateReturnDateJun. 30, 2011
Bar Chart, Year to Date Returnrr_BarChartYearToDateReturn4.07%
Highest Quarterly Return, Labelrr_HighestQuarterlyReturnLabelBest calendar quarter
Highest Quarterly Return, Daterr_BarChartHighestQuarterlyReturnDateSep. 30, 2009
Highest Quarterly Returnrr_BarChartHighestQuarterlyReturn8.19%
Lowest Quarterly Return, Labelrr_LowestQuarterlyReturnLabelWorst calendar quarter
Lowest Quarterly Return, Daterr_BarChartLowestQuarterlyReturnDateDec. 31, 2010
Lowest Quarterly Returnrr_BarChartLowestQuarterlyReturn(5.07%)
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Captionrr_AverageAnnualReturnCaptionAverage annual total returns after sales charges (for periods ending 12/31/10)
Performance Table Narrativerr_PerformanceTableNarrativeTextBlock

After-tax returns reflect the historical highest individual federal marginal income tax rates and do not reflect state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are shown for class A shares only and will vary for other classes. These after-tax returns do not apply if you hold your fund shares through a 401(k) plan, an IRA, or another tax-advantaged arrangement.

Class B share performance does not reflect conversion to class A shares.

Performance Table Uses Highest Federal Raterr_PerformanceTableUsesHighestFederalRateAfter-tax returns reflect the historical highest individual federal marginal income tax rates and do not reflect state and local taxes.
Performance Table Not Relevant to Tax Deferredrr_PerformanceTableNotRelevantToTaxDeferredActual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Performance Table One Class of after Tax Shown [Text]rr_PerformanceTableOneClassOfAfterTaxShownAfter-tax returns are shown for class A shares only and will vary for other classes.
Putnam Massachusetts Tax Exempt Income Fund | Putnam Massachusetts Tax Exempt Income Fund | Class A
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass A
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice4.00%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther1.00%[1]
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass A
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.22%[2]
Other expensesrr_OtherExpensesOverAssets0.11%
Total annual fund operating expensesrr_ExpensesOverAssets0.77%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass A
1 yearrr_ExpenseExampleYear01475
3 yearsrr_ExpenseExampleYear03637
5 yearsrr_ExpenseExampleYear05812
10 yearsrr_ExpenseExampleYear101,319
Annual Total Returnsrr_BarChartTableAbstract 
2001rr_AnnualReturn20014.44%
2002rr_AnnualReturn20028.53%
2003rr_AnnualReturn20034.92%
2004rr_AnnualReturn20044.26%
2005rr_AnnualReturn20053.43%
2006rr_AnnualReturn20064.29%
2007rr_AnnualReturn20073.04%
2008rr_AnnualReturn2008(5.61%)
2009rr_AnnualReturn200915.91%
2010rr_AnnualReturn20102.38%
Putnam Massachusetts Tax Exempt Income Fund | Putnam Massachusetts Tax Exempt Income Fund | Class B
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass B
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther5.00%[3]
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass B
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.85%
Other expensesrr_OtherExpensesOverAssets0.11%
Total annual fund operating expensesrr_ExpensesOverAssets1.40%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass B
1 yearrr_ExpenseExampleYear01643
3 yearsrr_ExpenseExampleYear03744
5 yearsrr_ExpenseExampleYear05967
10 yearsrr_ExpenseExampleYear101,511
Expense Example, No Redemptionrr_ExpenseExampleNoRedemptionAbstract 
Share classrr_ExpenseExampleNoRedemptionByYearColumnNameClass B (no redemption)
1 yearrr_ExpenseExampleNoRedemptionYear01143
3 yearsrr_ExpenseExampleNoRedemptionYear03444
5 yearsrr_ExpenseExampleNoRedemptionYear05767
10 yearsrr_ExpenseExampleNoRedemptionYear101,511
Putnam Massachusetts Tax Exempt Income Fund | Putnam Massachusetts Tax Exempt Income Fund | Class C
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass C
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther1.00%
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass C
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets1.00%
Other expensesrr_OtherExpensesOverAssets0.11%
Total annual fund operating expensesrr_ExpensesOverAssets1.55%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass C
1 yearrr_ExpenseExampleYear01258
3 yearsrr_ExpenseExampleYear03490
5 yearsrr_ExpenseExampleYear05846
10 yearsrr_ExpenseExampleYear101,848
Expense Example, No Redemptionrr_ExpenseExampleNoRedemptionAbstract 
Share classrr_ExpenseExampleNoRedemptionByYearColumnNameClass C (no redemption)
1 yearrr_ExpenseExampleNoRedemptionYear01158
3 yearsrr_ExpenseExampleNoRedemptionYear03490
5 yearsrr_ExpenseExampleNoRedemptionYear05846
10 yearsrr_ExpenseExampleNoRedemptionYear101,848
Putnam Massachusetts Tax Exempt Income Fund | Putnam Massachusetts Tax Exempt Income Fund | Class M
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass M
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice3.25%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther none
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass M
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.50%
Other expensesrr_OtherExpensesOverAssets0.11%
Total annual fund operating expensesrr_ExpensesOverAssets1.05%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass M
1 yearrr_ExpenseExampleYear01429
3 yearsrr_ExpenseExampleYear03649
5 yearsrr_ExpenseExampleYear05887
10 yearsrr_ExpenseExampleYear101,569
Putnam Massachusetts Tax Exempt Income Fund | Putnam Massachusetts Tax Exempt Income Fund | Class Y
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass Y
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther none
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass Y
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets 
Other expensesrr_OtherExpensesOverAssets0.11%
Total annual fund operating expensesrr_ExpensesOverAssets0.55%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass Y
1 yearrr_ExpenseExampleYear0156
3 yearsrr_ExpenseExampleYear03177
5 yearsrr_ExpenseExampleYear05309
10 yearsrr_ExpenseExampleYear10693
Putnam Massachusetts Tax Exempt Income Fund | Putnam Massachusetts Tax Exempt Income Fund | before taxes | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(1.71%)
5 yearsrr_AverageAnnualReturnYear052.95%
10 yearsrr_AverageAnnualReturnYear104.01%
Putnam Massachusetts Tax Exempt Income Fund | Putnam Massachusetts Tax Exempt Income Fund | before taxes | Class B
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass B
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(3.16%)
5 yearsrr_AverageAnnualReturnYear052.77%
10 yearsrr_AverageAnnualReturnYear103.77%
Putnam Massachusetts Tax Exempt Income Fund | Putnam Massachusetts Tax Exempt Income Fund | before taxes | Class C
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass C
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear010.62%
5 yearsrr_AverageAnnualReturnYear052.96%
10 yearsrr_AverageAnnualReturnYear103.62%
Putnam Massachusetts Tax Exempt Income Fund | Putnam Massachusetts Tax Exempt Income Fund | before taxes | Class M
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass M
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(1.17%)
5 yearsrr_AverageAnnualReturnYear052.81%
10 yearsrr_AverageAnnualReturnYear103.79%
Putnam Massachusetts Tax Exempt Income Fund | Putnam Massachusetts Tax Exempt Income Fund | before taxes | Class Y
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass Y
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear012.64%
5 yearsrr_AverageAnnualReturnYear053.96%
10 yearsrr_AverageAnnualReturnYear104.53%
Putnam Massachusetts Tax Exempt Income Fund | Putnam Massachusetts Tax Exempt Income Fund | after taxes on distributions | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelafter taxes on distributions
1 yearrr_AverageAnnualReturnYear01(1.74%)
5 yearsrr_AverageAnnualReturnYear052.88%
10 yearsrr_AverageAnnualReturnYear103.95%
Putnam Massachusetts Tax Exempt Income Fund | Putnam Massachusetts Tax Exempt Income Fund | after taxes on distributions and sale of fund shares | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelafter taxes on distributions and sale of fund shares
1 yearrr_AverageAnnualReturnYear010.37%
5 yearsrr_AverageAnnualReturnYear053.09%
10 yearsrr_AverageAnnualReturnYear104.03%
Putnam Massachusetts Tax Exempt Income Fund | Putnam Massachusetts Tax Exempt Income Fund | Barclays Capital Municipal Bond Index
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Labelrr_AverageAnnualReturnLabelBarclays Capital Municipal Bond Index
Index No Deduction for Fees, Expenses, Taxes [Text]rr_IndexNoDeductionForFeesExpensesTaxes(no deduction for fees, expenses or taxes)
1 yearrr_AverageAnnualReturnYear012.38%
5 yearsrr_AverageAnnualReturnYear054.09%
10 yearsrr_AverageAnnualReturnYear104.83%
Putnam Michigan Tax Exempt Income Fund | Putnam Michigan Tax Exempt Income Fund
 
Risk/Return:rr_RiskReturnAbstract 
Risk/Return [Heading]rr_RiskReturnHeadingPutnam Michigan Tax Exempt Income Fund
Objective [Heading]rr_ObjectiveHeadingGoal
Objective, Primary [Text Block]rr_ObjectivePrimaryTextBlockPutnam Michigan Tax Exempt Income Fund seeks as high a level of current income exempt from federal income tax and Michigan personal income tax as we believe is consistent with preservation of capital.
Fees and expensespateif869392_FundFeesAndExpensesAbstract 
Expense [Heading]rr_ExpenseHeadingFees and expenses
Expense Narrative [Text Block]rr_ExpenseNarrativeTextBlockThe following table describes the fees and expenses you may pay if you buy and hold shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in class A shares or $50,000 in class M shares of Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 37 of the fund’s prospectus and in How to buy shares beginning on page II-1 of the SAI.
Expense Breakpoint Discountspateif869392_ExpenseBreakpointDiscountsAbstract 
Expense Breakpoint Discounts [Text]rr_ExpenseBreakpointDiscountsYou may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in class A shares or $50,000 in class M shares of Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 37 of the fund’s prospectus and in How to buy shares beginning on page II-1 of the SAI.
Expense Breakpoint, Minimum Investment Required [Amount]rr_ExpenseBreakpointMinimumInvestmentRequiredAmount50,000
Shareholder feesrr_ShareholderFeesAbstract 
Shareholder Fees Caption [Text]rr_ShareholderFeesCaptionShareholder fees (fees paid directly from your investment)
Annual fund operating expensesrr_OperatingExpensesAbstract 
Operating Expenses Caption [Text]rr_OperatingExpensesCaptionAnnual fund operating expenses (expenses you pay each year as a percentage of the value of your investment)
Expense Examplerr_ExpenseExampleAbstract 
Expense Example [Heading]rr_ExpenseExampleHeadingExample
Expense Example Narrative [Text Block]rr_ExpenseExampleNarrativeTextBlockThe following hypothetical example is intended to help you compare the cost of investing in the fund with the cost of investing in other funds. It assumes that you invest $10,000 in the fund for the time periods indicated and then, except as indicated, redeem all your shares at the end of those periods. It assumes a 5% return on your investment each year and that the fund’s operating expenses remain the same. Your actual costs may be higher or lower.
Portfolio turnoverpateif869392_PortfolioTurnoverAltAbstract 
Portfolio Turnover [Heading]rr_PortfolioTurnoverHeadingPortfolio turnover
Portfolio Turnover [Text Block]rr_PortfolioTurnoverTextBlockThe fund pays transaction-related costs when it buys and sells securities (or “turns over” its portfolio). A higher turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or the above example, affect fund performance. The fund’s turnover rate in the most recent fiscal year was 8%.
Portfolio Turnover, Raterr_PortfolioTurnoverRate8.00%
Strategy [Heading]rr_StrategyHeadingInvestments
Strategy Narrative [Text Block]rr_StrategyNarrativeTextBlockWe invest mainly in bonds that pay interest that is exempt from federal income tax and Michigan personal income tax (but that may be subject to federal alternative minimum tax (AMT)), are investment-grade in quality, and have intermediate- to long-term maturities (three years or longer). We may consider, among other factors, credit, interest rate and prepayment risks, as well as general market conditions, when deciding whether to buy or sell investments.
Strategy Portfolio Concentration [Text]rr_StrategyPortfolioConcentrationWe invest mainly in bonds that pay interest that is exempt from federal income tax and Michigan personal income tax (but that may be subject to federal alternative minimum tax (AMT)), are investment-grade in quality, and have intermediate- to long-term maturities (three years or longer).
Risk [Heading]rr_RiskHeadingRisks
Risk Narrative [Text Block]rr_RiskNarrativeTextBlock

It is important to understand that you can lose money by investing in the fund.

The prices of bonds in the fund’s portfolio may fall or fail to rise over extended periods of time for a variety of reasons, including both general financial market conditions and factors related to a specific issuer. The risks associated with bond investments include interest rate risk, which means the prices of the fund’s investments are likely to fall if interest rates rise. Bond investments also are subject to credit risk, which is the risk that the issuers of the fund’s investments may default on payment of interest or principal. Since the fund invests in tax-exempt bonds, which, to be treated as tax-exempt under the Internal Revenue Code, may be issued only by limited types of issuers for limited types of projects, the fund’s investments may be focused in certain market segments. Consequently, the fund may be more vulnerable to fluctuations in the values of the securities it holds than a fund that invests more broadly. Interest rate risk is generally greater for longer-term bonds, and credit risk is generally greater for below-investment-grade bonds. Investments in a single state carry risks of vulnerability to common economic forces and other factors affecting the state’s tax-exempt investments, which may result in greater losses and volatility. Interest the fund receives might be taxable.

The fund may not achieve its goal, and it is not intended to be a complete investment program. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Risk Lose Money [Text]rr_RiskLoseMoneyIt is important to understand that you can lose money by investing in the fund.
Risk Not Insured Depository Institution [Text]rr_RiskNotInsuredDepositoryInstitutionAn investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Performancepateif869392_FundPastPerformanceAbstract 
Bar Chart and Performance Table [Heading]rr_BarChartAndPerformanceTableHeadingPerformance
Performance Narrative [Text Block]rr_PerformanceNarrativeTextBlockThe performance information below gives some indication of the risks associated with an investment in the fund by showing the fund’s performance year to year and over time. The bar chart does not reflect the impact of sales charges. If it did, performance would be lower. Please remember that past performance is not necessarily an indication of future results. Monthly performance figures for the fund are available at putnam.com.
Performance Information Illustrates Variability of Returns [Text]rr_PerformanceInformationIllustratesVariabilityOfReturnsThe performance information below gives some indication of the risks associated with an investment in the fund by showing the fund’s performance year to year and over time.
Bar Chart Does Not Reflect Sales Loads [Text]rr_BarChartDoesNotReflectSalesLoadsThe bar chart does not reflect the impact of sales charges. If it did, performance would be lower.
Performance Past Does Not Indicate Future [Text]rr_PerformancePastDoesNotIndicateFuturePlease remember that past performance is not necessarily an indication of future results.
Performance Table Closing [Text Block]rr_PerformanceTableClosingTextBlockMonthly performance figures for the fund are available at putnam.com.
Performance Availability Website Address [Text]rr_PerformanceAvailabilityWebSiteAddressputnam.com
Annual Total Returnsrr_BarChartTableAbstract 
Bar Chart [Heading]rr_BarChartHeadingAnnual total returns for class A shares before sales charges
Bar Chart Closing [Text Block]rr_BarChartClosingTextBlock

Year-to-date performance

through 6/30/11

3.72%

Best calendar quarter

Q3 2009

8.27%

Worst calendar quarter

Q4 2010

-4.50%

Year to Date Return, Labelrr_YearToDateReturnLabelYear-to-date performance through
Bar Chart, Year to Date Return, Daterr_BarChartYearToDateReturnDateJun. 30, 2011
Bar Chart, Year to Date Returnrr_BarChartYearToDateReturn3.72%
Highest Quarterly Return, Labelrr_HighestQuarterlyReturnLabelBest calendar quarter
Highest Quarterly Return, Daterr_BarChartHighestQuarterlyReturnDateSep. 30, 2009
Highest Quarterly Returnrr_BarChartHighestQuarterlyReturn8.27%
Lowest Quarterly Return, Labelrr_LowestQuarterlyReturnLabelWorst calendar quarter
Lowest Quarterly Return, Daterr_BarChartLowestQuarterlyReturnDateDec. 31, 2010
Lowest Quarterly Returnrr_BarChartLowestQuarterlyReturn(4.50%)
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Captionrr_AverageAnnualReturnCaptionAverage annual total returns after sales charges (for periods ending 12/31/10)
Performance Table Narrativerr_PerformanceTableNarrativeTextBlock

After-tax returns reflect the historical highest individual federal marginal income tax rates and do not reflect state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are shown for class A shares only and will vary for other classes. These after-tax returns do not apply if you hold your fund shares through a 401(k) plan, an IRA, or another tax-advantaged arrangement.

Class B share performance does not reflect conversion to class A shares.

Performance Table Uses Highest Federal Raterr_PerformanceTableUsesHighestFederalRateAfter-tax returns reflect the historical highest individual federal marginal income tax rates and do not reflect state and local taxes.
Performance Table Not Relevant to Tax Deferredrr_PerformanceTableNotRelevantToTaxDeferredActual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Performance Table One Class of after Tax Shown [Text]rr_PerformanceTableOneClassOfAfterTaxShownAfter-tax returns are shown for class A shares only and will vary for other classes.
Putnam Michigan Tax Exempt Income Fund | Putnam Michigan Tax Exempt Income Fund | Class A
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass A
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice4.00%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther1.00%[1]
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass A
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.22%[2]
Other expensesrr_OtherExpensesOverAssets0.17%
Total annual fund operating expensesrr_ExpensesOverAssets0.83%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass A
1 yearrr_ExpenseExampleYear01481
3 yearsrr_ExpenseExampleYear03654
5 yearsrr_ExpenseExampleYear05842
10 yearsrr_ExpenseExampleYear101,384
Annual Total Returnsrr_BarChartTableAbstract 
2001rr_AnnualReturn20015.11%
2002rr_AnnualReturn20027.72%
2003rr_AnnualReturn20034.31%
2004rr_AnnualReturn20043.45%
2005rr_AnnualReturn20053.08%
2006rr_AnnualReturn20063.90%
2007rr_AnnualReturn20073.10%
2008rr_AnnualReturn2008(4.82%)
2009rr_AnnualReturn200913.57%
2010rr_AnnualReturn20101.95%
Putnam Michigan Tax Exempt Income Fund | Putnam Michigan Tax Exempt Income Fund | Class B
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass B
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther5.00%[3]
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass B
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.85%
Other expensesrr_OtherExpensesOverAssets0.17%
Total annual fund operating expensesrr_ExpensesOverAssets1.46%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass B
1 yearrr_ExpenseExampleYear01649
3 yearsrr_ExpenseExampleYear03762
5 yearsrr_ExpenseExampleYear05997
10 yearsrr_ExpenseExampleYear101,575
Expense Example, No Redemptionrr_ExpenseExampleNoRedemptionAbstract 
Share classrr_ExpenseExampleNoRedemptionByYearColumnNameClass B (no redemption)
1 yearrr_ExpenseExampleNoRedemptionYear01149
3 yearsrr_ExpenseExampleNoRedemptionYear03462
5 yearsrr_ExpenseExampleNoRedemptionYear05797
10 yearsrr_ExpenseExampleNoRedemptionYear101,575
Putnam Michigan Tax Exempt Income Fund | Putnam Michigan Tax Exempt Income Fund | Class C
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass C
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther1.00%
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass C
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets1.00%
Other expensesrr_OtherExpensesOverAssets0.17%
Total annual fund operating expensesrr_ExpensesOverAssets1.61%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass C
1 yearrr_ExpenseExampleYear01264
3 yearsrr_ExpenseExampleYear03508
5 yearsrr_ExpenseExampleYear05876
10 yearsrr_ExpenseExampleYear101,911
Expense Example, No Redemptionrr_ExpenseExampleNoRedemptionAbstract 
Share classrr_ExpenseExampleNoRedemptionByYearColumnNameClass C (no redemption)
1 yearrr_ExpenseExampleNoRedemptionYear01164
3 yearsrr_ExpenseExampleNoRedemptionYear03508
5 yearsrr_ExpenseExampleNoRedemptionYear05876
10 yearsrr_ExpenseExampleNoRedemptionYear101,911
Putnam Michigan Tax Exempt Income Fund | Putnam Michigan Tax Exempt Income Fund | Class M
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass M
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice3.25%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther none
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass M
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.50%
Other expensesrr_OtherExpensesOverAssets0.17%
Total annual fund operating expensesrr_ExpensesOverAssets1.11%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass M
1 yearrr_ExpenseExampleYear01434
3 yearsrr_ExpenseExampleYear03666
5 yearsrr_ExpenseExampleYear05917
10 yearsrr_ExpenseExampleYear101,633
Putnam Michigan Tax Exempt Income Fund | Putnam Michigan Tax Exempt Income Fund | Class Y
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass Y
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther none
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass Y
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets 
Other expensesrr_OtherExpensesOverAssets0.17%
Total annual fund operating expensesrr_ExpensesOverAssets0.61%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass Y
1 yearrr_ExpenseExampleYear0162
3 yearsrr_ExpenseExampleYear03195
5 yearsrr_ExpenseExampleYear05340
10 yearsrr_ExpenseExampleYear10762
Putnam Michigan Tax Exempt Income Fund | Putnam Michigan Tax Exempt Income Fund | before taxes | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(2.16%)
5 yearsrr_AverageAnnualReturnYear052.52%
10 yearsrr_AverageAnnualReturnYear103.62%
Putnam Michigan Tax Exempt Income Fund | Putnam Michigan Tax Exempt Income Fund | before taxes | Class B
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass B
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(3.60%)
5 yearsrr_AverageAnnualReturnYear052.35%
10 yearsrr_AverageAnnualReturnYear103.38%
Putnam Michigan Tax Exempt Income Fund | Putnam Michigan Tax Exempt Income Fund | before taxes | Class C
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass C
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear010.15%
5 yearsrr_AverageAnnualReturnYear052.59%
10 yearsrr_AverageAnnualReturnYear103.26%
Putnam Michigan Tax Exempt Income Fund | Putnam Michigan Tax Exempt Income Fund | before taxes | Class M
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass M
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(1.64%)
5 yearsrr_AverageAnnualReturnYear052.39%
10 yearsrr_AverageAnnualReturnYear103.39%
Putnam Michigan Tax Exempt Income Fund | Putnam Michigan Tax Exempt Income Fund | before taxes | Class Y
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass Y
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear012.19%
5 yearsrr_AverageAnnualReturnYear053.50%
10 yearsrr_AverageAnnualReturnYear104.12%
Putnam Michigan Tax Exempt Income Fund | Putnam Michigan Tax Exempt Income Fund | after taxes on distributions | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelafter taxes on distributions
1 yearrr_AverageAnnualReturnYear01(2.16%)
5 yearsrr_AverageAnnualReturnYear052.51%
10 yearsrr_AverageAnnualReturnYear103.62%
Putnam Michigan Tax Exempt Income Fund | Putnam Michigan Tax Exempt Income Fund | after taxes on distributions and sale of fund shares | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelafter taxes on distributions and sale of fund shares
1 yearrr_AverageAnnualReturnYear01(0.03%)
5 yearsrr_AverageAnnualReturnYear052.72%
10 yearsrr_AverageAnnualReturnYear103.69%
Putnam Michigan Tax Exempt Income Fund | Putnam Michigan Tax Exempt Income Fund | Barclays Capital Municipal Bond Index
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Labelrr_AverageAnnualReturnLabelBarclays Capital Municipal Bond Index
Index No Deduction for Fees, Expenses, Taxes [Text]rr_IndexNoDeductionForFeesExpensesTaxes(no deduction for fees, expenses or taxes)
1 yearrr_AverageAnnualReturnYear012.38%
5 yearsrr_AverageAnnualReturnYear054.09%
10 yearsrr_AverageAnnualReturnYear104.83%
Putnam Minnesota Tax Exempt Income Fund | Putnam Minnesota Tax Exempt Income Fund
 
Risk/Return:rr_RiskReturnAbstract 
Risk/Return [Heading]rr_RiskReturnHeadingPutnam Minnesota Tax Exempt Income Fund
Objective [Heading]rr_ObjectiveHeadingGoal
Objective, Primary [Text Block]rr_ObjectivePrimaryTextBlockPutnam Minnesota Tax Exempt Income Fund seeks as high a level of current income exempt from federal income tax and Minnesota personal income tax as we believe is consistent with preservation of capital.
Fees and expensespateif869392_FundFeesAndExpensesAbstract 
Expense [Heading]rr_ExpenseHeadingFees and expenses
Expense Narrative [Text Block]rr_ExpenseNarrativeTextBlockThe following table describes the fees and expenses you may pay if you buy and hold shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in class A shares or $50,000 in class M shares of Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 37 of the fund’s prospectus and in How to buy shares beginning on page II-1 of the fund’s SAI.
Expense Breakpoint Discountspateif869392_ExpenseBreakpointDiscountsAbstract 
Expense Breakpoint Discounts [Text]rr_ExpenseBreakpointDiscountsYou may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in class A shares or $50,000 in class M shares of Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 37 of the fund’s prospectus and in How to buy shares beginning on page II-1 of the fund’s SAI.
Expense Breakpoint, Minimum Investment Required [Amount]rr_ExpenseBreakpointMinimumInvestmentRequiredAmount50,000
Shareholder feesrr_ShareholderFeesAbstract 
Shareholder Fees Caption [Text]rr_ShareholderFeesCaptionShareholder fees (fees paid directly from your investment)
Annual fund operating expensesrr_OperatingExpensesAbstract 
Operating Expenses Caption [Text]rr_OperatingExpensesCaptionAnnual fund operating expenses (expenses you pay each year as a percentage of the value of your investment)
Expense Examplerr_ExpenseExampleAbstract 
Expense Example [Heading]rr_ExpenseExampleHeadingExample
Expense Example Narrative [Text Block]rr_ExpenseExampleNarrativeTextBlockThe following hypothetical example is intended to help you compare the cost of investing in the fund with the cost of investing in other funds. It assumes that you invest $10,000 in the fund for the time periods indicated and then, except as indicated, redeem all your shares at the end of those periods. It assumes a 5% return on your investment each year and that the fund’s operating expenses remain the same. Your actual costs may be higher or lower.
Portfolio turnoverpateif869392_PortfolioTurnoverAltAbstract 
Portfolio Turnover [Heading]rr_PortfolioTurnoverHeadingPortfolio turnover
Portfolio Turnover [Text Block]rr_PortfolioTurnoverTextBlockThe fund pays transaction-related costs when it buys and sells securities (or “turns over” its portfolio). A higher turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or the above example, affect fund performance. The fund’s turnover rate in the most recent fiscal year was 17%.
Portfolio Turnover, Raterr_PortfolioTurnoverRate17.00%
Strategy [Heading]rr_StrategyHeadingInvestments
Strategy Narrative [Text Block]rr_StrategyNarrativeTextBlockWe invest mainly in bonds that pay interest that is exempt from federal income tax and Minnesota personal income tax (but that may be subject to federal alternative minimum tax (AMT)), are investment-grade in quality, and have intermediate- to long-term maturities (three years or longer). We may consider, among other factors, credit, interest rate and prepayment risks, as well as general market conditions, when deciding whether to buy or sell investments.
Strategy Portfolio Concentration [Text]rr_StrategyPortfolioConcentrationWe invest mainly in bonds that pay interest that is exempt from federal income tax and Minnesota personal income tax (but that may be subject to federal alternative minimum tax (AMT)), are investment-grade in quality, and have intermediate- to long-term maturities (three years or longer).
Risk [Heading]rr_RiskHeadingRisks
Risk Narrative [Text Block]rr_RiskNarrativeTextBlock

It is important to understand that you can lose money by investing in the fund.

The prices of bonds in the fund’s portfolio may fall or fail to rise over extended periods of time for a variety of reasons, including both general financial market conditions and factors related to a specific issuer. The risks associated with bond investments include interest rate risk, which means the prices of the fund’s investments are likely to fall if interest rates rise. Bond investments also are subject to credit risk, which is the risk that the issuers of the fund’s investments may default on payment of interest or principal. Since the fund invests in tax-exempt bonds, which, to be treated as tax-exempt under the Internal Revenue Code, may be issued only by limited types of issuers for limited types of projects, the fund’s investments may be focused in certain market segments. Consequently, the fund may be more vulnerable to fluctuations in the values of the securities it holds than a fund that invests more broadly. Interest rate risk is generally greater for longer-term bonds, and credit risk is generally greater for below-investment-grade bonds. Investments in a single state carry risks of vulnerability to common economic forces and other factors affecting the state’s tax-exempt investments, which may result in greater losses and volatility. Interest the fund receives might be taxable.

The fund may not achieve its goal, and it is not intended to be a complete investment program. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Risk Lose Money [Text]rr_RiskLoseMoneyIt is important to understand that you can lose money by investing in the fund.
Risk Not Insured Depository Institution [Text]rr_RiskNotInsuredDepositoryInstitutionAn investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Performancepateif869392_FundPastPerformanceAbstract 
Bar Chart and Performance Table [Heading]rr_BarChartAndPerformanceTableHeadingPerformance
Performance Narrative [Text Block]rr_PerformanceNarrativeTextBlockThe performance information below gives some indication of the risks associated with an investment in the fund by showing the fund’s performance year to year and over time. The bar chart does not reflect the impact of sales charges. If it did, performance would be lower. Please remember that past performance is not necessarily an indication of future results. Monthly performance figures for the fund are available at putnam.com.
Performance Information Illustrates Variability of Returns [Text]rr_PerformanceInformationIllustratesVariabilityOfReturnsThe performance information below gives some indication of the risks associated with an investment in the fund by showing the fund’s performance year to year and over time.
Bar Chart Does Not Reflect Sales Loads [Text]rr_BarChartDoesNotReflectSalesLoadsThe bar chart does not reflect the impact of sales charges. If it did, performance would be lower.
Performance Past Does Not Indicate Future [Text]rr_PerformancePastDoesNotIndicateFuturePlease remember that past performance is not necessarily an indication of future results.
Performance Table Closing [Text Block]rr_PerformanceTableClosingTextBlockMonthly performance figures for the fund are available at putnam.com.
Performance Availability Website Address [Text]rr_PerformanceAvailabilityWebSiteAddressputnam.com
Annual Total Returnsrr_BarChartTableAbstract 
Bar Chart [Heading]rr_BarChartHeadingAnnual total returns for class A shares before sales charges
Bar Chart Closing [Text Block]rr_BarChartClosingTextBlock

Year-to-date performance

through 6/30/11

4.03%

Best calendar quarter

Q3 2009

6.51%

Worst calendar quarter

Q4 2010

-4.22%

Year to Date Return, Labelrr_YearToDateReturnLabelYear-to-date performance through
Bar Chart, Year to Date Return, Daterr_BarChartYearToDateReturnDateJun. 30, 2011
Bar Chart, Year to Date Returnrr_BarChartYearToDateReturn4.03%
Highest Quarterly Return, Labelrr_HighestQuarterlyReturnLabelBest calendar quarter
Highest Quarterly Return, Daterr_BarChartHighestQuarterlyReturnDateSep. 30, 2009
Highest Quarterly Returnrr_BarChartHighestQuarterlyReturn6.51%
Lowest Quarterly Return, Labelrr_LowestQuarterlyReturnLabelWorst calendar quarter
Lowest Quarterly Return, Daterr_BarChartLowestQuarterlyReturnDateDec. 31, 2010
Lowest Quarterly Returnrr_BarChartLowestQuarterlyReturn(4.22%)
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Captionrr_AverageAnnualReturnCaptionAverage annual total returns after sales charges (for periods ending 12/31/10)
Performance Table Narrativerr_PerformanceTableNarrativeTextBlock

After-tax returns reflect the historical highest individual federal marginal income tax rates and do not reflect state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are shown for class A shares only and will vary for other classes. These after-tax returns do not apply if you hold your fund shares through a 401(k) plan, an IRA, or another tax-advantaged arrangement.

Class B share performance does not reflect conversion to class A shares.

Performance Table Uses Highest Federal Raterr_PerformanceTableUsesHighestFederalRateAfter-tax returns reflect the historical highest individual federal marginal income tax rates and do not reflect state and local taxes.
Performance Table Not Relevant to Tax Deferredrr_PerformanceTableNotRelevantToTaxDeferredActual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Performance Table One Class of after Tax Shown [Text]rr_PerformanceTableOneClassOfAfterTaxShownAfter-tax returns are shown for class A shares only and will vary for other classes.
Putnam Minnesota Tax Exempt Income Fund | Putnam Minnesota Tax Exempt Income Fund | Class A
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass A
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice4.00%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther1.00%[1]
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass A
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.23%[2]
Other expensesrr_OtherExpensesOverAssets0.16%
Total annual fund operating expensesrr_ExpensesOverAssets0.83%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass A
1 yearrr_ExpenseExampleYear01481
3 yearsrr_ExpenseExampleYear03654
5 yearsrr_ExpenseExampleYear05842
10 yearsrr_ExpenseExampleYear101,384
Annual Total Returnsrr_BarChartTableAbstract 
2001rr_AnnualReturn20014.60%
2002rr_AnnualReturn20027.98%
2003rr_AnnualReturn20035.50%
2004rr_AnnualReturn20043.78%
2005rr_AnnualReturn20052.82%
2006rr_AnnualReturn20063.85%
2007rr_AnnualReturn20072.57%
2008rr_AnnualReturn2008(5.52%)
2009rr_AnnualReturn200915.28%
2010rr_AnnualReturn20102.42%
Putnam Minnesota Tax Exempt Income Fund | Putnam Minnesota Tax Exempt Income Fund | Class B
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass B
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther5.00%[3]
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass B
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.85%
Other expensesrr_OtherExpensesOverAssets0.16%
Total annual fund operating expensesrr_ExpensesOverAssets1.45%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass B
1 yearrr_ExpenseExampleYear01648
3 yearsrr_ExpenseExampleYear03759
5 yearsrr_ExpenseExampleYear05992
10 yearsrr_ExpenseExampleYear101,567
Expense Example, No Redemptionrr_ExpenseExampleNoRedemptionAbstract 
Share classrr_ExpenseExampleNoRedemptionByYearColumnNameClass B (no redemption)
1 yearrr_ExpenseExampleNoRedemptionYear01148
3 yearsrr_ExpenseExampleNoRedemptionYear03459
5 yearsrr_ExpenseExampleNoRedemptionYear05792
10 yearsrr_ExpenseExampleNoRedemptionYear101,567
Putnam Minnesota Tax Exempt Income Fund | Putnam Minnesota Tax Exempt Income Fund | Class C
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass C
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther1.00%
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass C
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets1.00%
Other expensesrr_OtherExpensesOverAssets0.16%
Total annual fund operating expensesrr_ExpensesOverAssets1.60%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass C
1 yearrr_ExpenseExampleYear01263
3 yearsrr_ExpenseExampleYear03505
5 yearsrr_ExpenseExampleYear05871
10 yearsrr_ExpenseExampleYear101,900
Expense Example, No Redemptionrr_ExpenseExampleNoRedemptionAbstract 
Share classrr_ExpenseExampleNoRedemptionByYearColumnNameClass C (no redemption)
1 yearrr_ExpenseExampleNoRedemptionYear01163
3 yearsrr_ExpenseExampleNoRedemptionYear03505
5 yearsrr_ExpenseExampleNoRedemptionYear05871
10 yearsrr_ExpenseExampleNoRedemptionYear101,900
Putnam Minnesota Tax Exempt Income Fund | Putnam Minnesota Tax Exempt Income Fund | Class M
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass M
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice3.25%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther none
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass M
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.50%
Other expensesrr_OtherExpensesOverAssets0.16%
Total annual fund operating expensesrr_ExpensesOverAssets1.10%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass M
1 yearrr_ExpenseExampleYear01434
3 yearsrr_ExpenseExampleYear03663
5 yearsrr_ExpenseExampleYear05911
10 yearsrr_ExpenseExampleYear101,622
Putnam Minnesota Tax Exempt Income Fund | Putnam Minnesota Tax Exempt Income Fund | Class Y
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass Y
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther none
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass Y
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets 
Other expensesrr_OtherExpensesOverAssets0.16%
Total annual fund operating expensesrr_ExpensesOverAssets0.60%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass Y
1 yearrr_ExpenseExampleYear0161
3 yearsrr_ExpenseExampleYear03192
5 yearsrr_ExpenseExampleYear05335
10 yearsrr_ExpenseExampleYear10750
Putnam Minnesota Tax Exempt Income Fund | Putnam Minnesota Tax Exempt Income Fund | before taxes | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(1.74%)
5 yearsrr_AverageAnnualReturnYear052.66%
10 yearsrr_AverageAnnualReturnYear103.79%
Putnam Minnesota Tax Exempt Income Fund | Putnam Minnesota Tax Exempt Income Fund | before taxes | Class B
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass B
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(3.06%)
5 yearsrr_AverageAnnualReturnYear052.49%
10 yearsrr_AverageAnnualReturnYear103.56%
Putnam Minnesota Tax Exempt Income Fund | Putnam Minnesota Tax Exempt Income Fund | before taxes | Class C
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass C
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear010.68%
5 yearsrr_AverageAnnualReturnYear052.75%
10 yearsrr_AverageAnnualReturnYear103.44%
Putnam Minnesota Tax Exempt Income Fund | Putnam Minnesota Tax Exempt Income Fund | before taxes | Class M
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass M
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(1.23%)
5 yearsrr_AverageAnnualReturnYear052.51%
10 yearsrr_AverageAnnualReturnYear103.57%
Putnam Minnesota Tax Exempt Income Fund | Putnam Minnesota Tax Exempt Income Fund | before taxes | Class Y
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass Y
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear012.58%
5 yearsrr_AverageAnnualReturnYear053.67%
10 yearsrr_AverageAnnualReturnYear104.29%
Putnam Minnesota Tax Exempt Income Fund | Putnam Minnesota Tax Exempt Income Fund | after taxes on distributions | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelafter taxes on distributions
1 yearrr_AverageAnnualReturnYear01(1.80%)
5 yearsrr_AverageAnnualReturnYear052.64%
10 yearsrr_AverageAnnualReturnYear103.78%
Putnam Minnesota Tax Exempt Income Fund | Putnam Minnesota Tax Exempt Income Fund | after taxes on distributions and sale of fund shares | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelafter taxes on distributions and sale of fund shares
1 yearrr_AverageAnnualReturnYear010.17%
5 yearsrr_AverageAnnualReturnYear052.82%
10 yearsrr_AverageAnnualReturnYear103.83%
Putnam Minnesota Tax Exempt Income Fund | Putnam Minnesota Tax Exempt Income Fund | Barclays Capital Municipal Bond Index
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Labelrr_AverageAnnualReturnLabelBarclays Capital Municipal Bond Index
Index No Deduction for Fees, Expenses, Taxes [Text]rr_IndexNoDeductionForFeesExpensesTaxes(no deduction for fees, expenses or taxes)
1 yearrr_AverageAnnualReturnYear012.38%
5 yearsrr_AverageAnnualReturnYear054.09%
10 yearsrr_AverageAnnualReturnYear104.83%
Putnam New Jersey Tax Exempt Income Fund | Putnam New Jersey Tax Exempt Income Fund
 
Risk/Return:rr_RiskReturnAbstract 
Risk/Return [Heading]rr_RiskReturnHeadingPutnam New Jersey Tax Exempt Income Fund
Objective [Heading]rr_ObjectiveHeadingGoal
Objective, Primary [Text Block]rr_ObjectivePrimaryTextBlockPutnam New Jersey Tax Exempt Income Fund seeks as high a level of current income exempt from federal income tax and New Jersey personal income tax as we believe is consistent with preservation of capital.
Fees and expensespateif869392_FundFeesAndExpensesAbstract 
Expense [Heading]rr_ExpenseHeadingFees and expenses
Expense Narrative [Text Block]rr_ExpenseNarrativeTextBlockThe following table describes the fees and expenses you may pay if you buy and hold shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in class A shares or $50,000 in class M shares of Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 37 of the fund’s prospectus and in How to buy shares beginning on page II-1 of the fund’s SAI.
Expense Breakpoint Discountspateif869392_ExpenseBreakpointDiscountsAbstract 
Expense Breakpoint Discounts [Text]rr_ExpenseBreakpointDiscountsYou may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in class A shares or $50,000 in class M shares of Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 37 of the fund’s prospectus and in How to buy shares beginning on page II-1 of the fund’s SAI.
Expense Breakpoint, Minimum Investment Required [Amount]rr_ExpenseBreakpointMinimumInvestmentRequiredAmount50,000
Shareholder feesrr_ShareholderFeesAbstract 
Shareholder Fees Caption [Text]rr_ShareholderFeesCaptionShareholder fees (fees paid directly from your investment)
Annual fund operating expensesrr_OperatingExpensesAbstract 
Operating Expenses Caption [Text]rr_OperatingExpensesCaptionAnnual fund operating expenses (expenses you pay each year as a percentage of the value of your investment)
Expense Examplerr_ExpenseExampleAbstract 
Expense Example [Heading]rr_ExpenseExampleHeadingExample
Expense Example Narrative [Text Block]rr_ExpenseExampleNarrativeTextBlockThe following hypothetical example is intended to help you compare the cost of investing in the fund with the cost of investing in other funds. It assumes that you invest $10,000 in the fund for the time periods indicated and then, except as indicated, redeem all your shares at the end of those periods. It assumes a 5% return on your investment each year and that the fund’s operating expenses remain the same. Your actual costs may be higher or lower.
Portfolio turnoverpateif869392_PortfolioTurnoverAltAbstract 
Portfolio Turnover [Heading]rr_PortfolioTurnoverHeadingPortfolio turnover
Portfolio Turnover [Text Block]rr_PortfolioTurnoverTextBlockThe fund pays transaction-related costs when it buys and sells securities (or “turns over” its portfolio). A higher turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or the above example, affect fund performance. The fund’s turnover rate in the most recent fiscal year was 9%.
Portfolio Turnover, Raterr_PortfolioTurnoverRate9.00%
Strategy [Heading]rr_StrategyHeadingInvestments
Strategy Narrative [Text Block]rr_StrategyNarrativeTextBlockWe invest mainly in bonds that pay interest that is exempt from federal income tax and New Jersey personal income tax (but that may be subject to federal alternative minimum tax (AMT)), are investment-grade in quality, and have intermediate- to long-term maturities (three years or longer). We may consider, among other factors, credit, interest rate and prepayment risks, as well as general market conditions, when deciding whether to buy or sell investments.
Strategy Portfolio Concentration [Text]rr_StrategyPortfolioConcentrationWe invest mainly in bonds that pay interest that is exempt from federal income tax and New Jersey personal income tax (but that may be subject to federal alternative minimum tax (AMT)), are investment-grade in quality, and have intermediate- to long-term maturities (three years or longer).
Risk [Heading]rr_RiskHeadingRisks
Risk Narrative [Text Block]rr_RiskNarrativeTextBlock

It is important to understand that you can lose money by investing in the fund.

The prices of bonds in the fund’s portfolio may fall or fail to rise over extended periods of time for a variety of reasons, including both general financial market conditions and factors related to a specific issuer. The risks associated with bond investments include interest rate risk, which means the prices of the fund’s investments are likely to fall if interest rates rise. Bond investments also are subject to credit risk, which is the risk that the issuers of the fund’s investments may default on payment of interest or principal. Since the fund invests in tax-exempt bonds, which, to be treated as tax-exempt under the Internal Revenue Code, may be issued only by limited types of issuers for limited types of projects, the fund’s investments may be focused in certain market segments. Consequently, the fund may be more vulnerable to fluctuations in the values of the securities it holds than a fund that invests more broadly. Interest rate risk is generally greater for longer-term bonds, and credit risk is generally greater for below-investment-grade bonds. Investments in a single state carry risks of vulnerability to common economic forces and other factors affecting the state’s tax-exempt investments, which may result in greater losses and volatility. Interest the fund receives might be taxable.

The fund may not achieve its goal, and it is not intended to be a complete investment program. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Risk Lose Money [Text]rr_RiskLoseMoneyIt is important to understand that you can lose money by investing in the fund.
Risk Not Insured Depository Institution [Text]rr_RiskNotInsuredDepositoryInstitutionAn investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Performancepateif869392_FundPastPerformanceAbstract 
Bar Chart and Performance Table [Heading]rr_BarChartAndPerformanceTableHeadingPerformance
Performance Narrative [Text Block]rr_PerformanceNarrativeTextBlockThe performance information below gives some indication of the risks associated with an investment in the fund by showing the fund’s performance year to year and over time. The bar chart does not reflect the impact of sales charges. If it did, performance would be lower. Please remember that past performance is not necessarily an indication of future results. Monthly performance figures for the fund are available at putnam.com.
Performance Information Illustrates Variability of Returns [Text]rr_PerformanceInformationIllustratesVariabilityOfReturnsThe performance information below gives some indication of the risks associated with an investment in the fund by showing the fund’s performance year to year and over time.
Bar Chart Does Not Reflect Sales Loads [Text]rr_BarChartDoesNotReflectSalesLoadsThe bar chart does not reflect the impact of sales charges. If it did, performance would be lower.
Performance Past Does Not Indicate Future [Text]rr_PerformancePastDoesNotIndicateFuturePlease remember that past performance is not necessarily an indication of future results.
Performance Table Closing [Text Block]rr_PerformanceTableClosingTextBlockMonthly performance figures for the fund are available at putnam.com.
Performance Availability Website Address [Text]rr_PerformanceAvailabilityWebSiteAddressputnam.com
Annual Total Returnsrr_BarChartTableAbstract 
Bar Chart [Heading]rr_BarChartHeadingAnnual total returns for class A shares before sales charges
Bar Chart Closing [Text Block]rr_BarChartClosingTextBlock

Year-to-date performance

through 6/30/11

3.15%

Best calendar quarter

Q3 2009

8.26%

Worst calendar quarter

Q4 2010

-4.47%

Year to Date Return, Labelrr_YearToDateReturnLabelYear-to-date performance through
Bar Chart, Year to Date Return, Daterr_BarChartYearToDateReturnDateJun. 30, 2011
Bar Chart, Year to Date Returnrr_BarChartYearToDateReturn3.15%
Highest Quarterly Return, Labelrr_HighestQuarterlyReturnLabelBest calendar quarter
Highest Quarterly Return, Daterr_BarChartHighestQuarterlyReturnDateSep. 30, 2009
Highest Quarterly Returnrr_BarChartHighestQuarterlyReturn8.26%
Lowest Quarterly Return, Labelrr_LowestQuarterlyReturnLabelWorst calendar quarter
Lowest Quarterly Return, Daterr_BarChartLowestQuarterlyReturnDateDec. 31, 2010
Lowest Quarterly Returnrr_BarChartLowestQuarterlyReturn(4.47%)
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Captionrr_AverageAnnualReturnCaptionAverage annual total returns after sales charges (for periods ending 12/31/10)
Performance Table Narrativerr_PerformanceTableNarrativeTextBlock

After-tax returns reflect the historical highest individual federal marginal income tax rates and do not reflect state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are shown for class A shares only and will vary for other classes. These after-tax returns do not apply if you hold your fund shares through a 401(k) plan, an IRA, or another tax-advantaged arrangement.

Class B share performance does not reflect conversion to class A shares.

Performance Table Uses Highest Federal Raterr_PerformanceTableUsesHighestFederalRateAfter-tax returns reflect the historical highest individual federal marginal income tax rates and do not reflect state and local taxes.
Performance Table Not Relevant to Tax Deferredrr_PerformanceTableNotRelevantToTaxDeferredActual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Performance Table One Class of after Tax Shown [Text]rr_PerformanceTableOneClassOfAfterTaxShownAfter-tax returns are shown for class A shares only and will vary for other classes.
Putnam New Jersey Tax Exempt Income Fund | Putnam New Jersey Tax Exempt Income Fund | Class A
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass A
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice4.00%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther1.00%[1]
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass A
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.23%[2]
Other expensesrr_OtherExpensesOverAssets0.11%
Total annual fund operating expensesrr_ExpensesOverAssets0.78%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass A
1 yearrr_ExpenseExampleYear01476
3 yearsrr_ExpenseExampleYear03639
5 yearsrr_ExpenseExampleYear05816
10 yearsrr_ExpenseExampleYear101,327
Annual Total Returnsrr_BarChartTableAbstract 
2001rr_AnnualReturn20014.41%
2002rr_AnnualReturn20028.06%
2003rr_AnnualReturn20034.76%
2004rr_AnnualReturn20043.40%
2005rr_AnnualReturn20053.56%
2006rr_AnnualReturn20064.61%
2007rr_AnnualReturn20072.80%
2008rr_AnnualReturn2008(4.50%)
2009rr_AnnualReturn200914.98%
2010rr_AnnualReturn20101.83%
Putnam New Jersey Tax Exempt Income Fund | Putnam New Jersey Tax Exempt Income Fund | Class B
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass B
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther5.00%[3]
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass B
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.85%
Other expensesrr_OtherExpensesOverAssets0.11%
Total annual fund operating expensesrr_ExpensesOverAssets1.40%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass B
1 yearrr_ExpenseExampleYear01643
3 yearsrr_ExpenseExampleYear03743
5 yearsrr_ExpenseExampleYear05966
10 yearsrr_ExpenseExampleYear101,510
Expense Example, No Redemptionrr_ExpenseExampleNoRedemptionAbstract 
Share classrr_ExpenseExampleNoRedemptionByYearColumnNameClass B (no redemption)
1 yearrr_ExpenseExampleNoRedemptionYear01143
3 yearsrr_ExpenseExampleNoRedemptionYear03443
5 yearsrr_ExpenseExampleNoRedemptionYear05766
10 yearsrr_ExpenseExampleNoRedemptionYear101,510
Putnam New Jersey Tax Exempt Income Fund | Putnam New Jersey Tax Exempt Income Fund | Class C
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass C
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther1.00%
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass C
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets1.00%
Other expensesrr_OtherExpensesOverAssets0.11%
Total annual fund operating expensesrr_ExpensesOverAssets1.55%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass C
1 yearrr_ExpenseExampleYear01258
3 yearsrr_ExpenseExampleYear03490
5 yearsrr_ExpenseExampleYear05845
10 yearsrr_ExpenseExampleYear101,845
Expense Example, No Redemptionrr_ExpenseExampleNoRedemptionAbstract 
Share classrr_ExpenseExampleNoRedemptionByYearColumnNameClass C (no redemption)
1 yearrr_ExpenseExampleNoRedemptionYear01158
3 yearsrr_ExpenseExampleNoRedemptionYear03490
5 yearsrr_ExpenseExampleNoRedemptionYear05845
10 yearsrr_ExpenseExampleNoRedemptionYear101,845
Putnam New Jersey Tax Exempt Income Fund | Putnam New Jersey Tax Exempt Income Fund | Class M
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass M
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice3.25%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther none
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass M
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.50%
Other expensesrr_OtherExpensesOverAssets0.11%
Total annual fund operating expensesrr_ExpensesOverAssets1.05%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass M
1 yearrr_ExpenseExampleYear01429
3 yearsrr_ExpenseExampleYear03648
5 yearsrr_ExpenseExampleYear05886
10 yearsrr_ExpenseExampleYear101,566
Putnam New Jersey Tax Exempt Income Fund | Putnam New Jersey Tax Exempt Income Fund | Class Y
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass Y
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther none
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass Y
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets 
Other expensesrr_OtherExpensesOverAssets0.11%
Total annual fund operating expensesrr_ExpensesOverAssets0.55%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass Y
1 yearrr_ExpenseExampleYear0156
3 yearsrr_ExpenseExampleYear03176
5 yearsrr_ExpenseExampleYear05307
10 yearsrr_ExpenseExampleYear10689
Putnam New Jersey Tax Exempt Income Fund | Putnam New Jersey Tax Exempt Income Fund | before taxes | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(2.20%)
5 yearsrr_AverageAnnualReturnYear052.92%
10 yearsrr_AverageAnnualReturnYear103.87%
Putnam New Jersey Tax Exempt Income Fund | Putnam New Jersey Tax Exempt Income Fund | before taxes | Class B
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass B
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(3.70%)
5 yearsrr_AverageAnnualReturnYear052.75%
10 yearsrr_AverageAnnualReturnYear103.62%
Putnam New Jersey Tax Exempt Income Fund | Putnam New Jersey Tax Exempt Income Fund | before taxes | Class C
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass C
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear010.18%
5 yearsrr_AverageAnnualReturnYear052.98%
10 yearsrr_AverageAnnualReturnYear103.51%
Putnam New Jersey Tax Exempt Income Fund | Putnam New Jersey Tax Exempt Income Fund | before taxes | Class M
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass M
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(1.71%)
5 yearsrr_AverageAnnualReturnYear052.81%
10 yearsrr_AverageAnnualReturnYear103.64%
Putnam New Jersey Tax Exempt Income Fund | Putnam New Jersey Tax Exempt Income Fund | before taxes | Class Y
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass Y
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear012.10%
5 yearsrr_AverageAnnualReturnYear053.92%
10 yearsrr_AverageAnnualReturnYear104.37%
Putnam New Jersey Tax Exempt Income Fund | Putnam New Jersey Tax Exempt Income Fund | after taxes on distributions | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelafter taxes on distributions
1 yearrr_AverageAnnualReturnYear01(2.20%)
5 yearsrr_AverageAnnualReturnYear052.92%
10 yearsrr_AverageAnnualReturnYear103.86%
Putnam New Jersey Tax Exempt Income Fund | Putnam New Jersey Tax Exempt Income Fund | after taxes on distributions and sale of fund shares | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelafter taxes on distributions and sale of fund shares
1 yearrr_AverageAnnualReturnYear01(0.04%)
5 yearsrr_AverageAnnualReturnYear053.09%
10 yearsrr_AverageAnnualReturnYear103.91%
Putnam New Jersey Tax Exempt Income Fund | Putnam New Jersey Tax Exempt Income Fund | Barclays Capital Municipal Bond Index
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Labelrr_AverageAnnualReturnLabelBarclays Capital Municipal Bond Index
Index No Deduction for Fees, Expenses, Taxes [Text]rr_IndexNoDeductionForFeesExpensesTaxes(no deduction for fees, expenses or taxes)
1 yearrr_AverageAnnualReturnYear012.38%
5 yearsrr_AverageAnnualReturnYear054.09%
10 yearsrr_AverageAnnualReturnYear104.83%
Putnam Ohio Tax Exempt Income Fund | Putnam Ohio Tax Exempt Income Fund
 
Risk/Return:rr_RiskReturnAbstract 
Risk/Return [Heading]rr_RiskReturnHeadingPutnam Ohio Tax Exempt Income Fund
Objective [Heading]rr_ObjectiveHeadingGoal
Objective, Primary [Text Block]rr_ObjectivePrimaryTextBlockPutnam Ohio Tax Exempt Income Fund seeks as high a level of current income exempt from federal income tax and Ohio personal income tax as we believe is consistent with preservation of capital.
Fees and expensespateif869392_FundFeesAndExpensesAbstract 
Expense [Heading]rr_ExpenseHeadingFees and expenses
Expense Narrative [Text Block]rr_ExpenseNarrativeTextBlockThe following table describes the fees and expenses you may pay if you buy and hold shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in class A shares or $50,000 in class M shares of Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 37 of the fund’s prospectus and in How to buy shares beginning on page II-1 of the fund’s SAI.
Expense Breakpoint Discountspateif869392_ExpenseBreakpointDiscountsAbstract 
Expense Breakpoint Discounts [Text]rr_ExpenseBreakpointDiscountsYou may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in class A shares or $50,000 in class M shares of Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 37 of the fund’s prospectus and in How to buy shares beginning on page II-1 of the fund’s SAI.
Expense Breakpoint, Minimum Investment Required [Amount]rr_ExpenseBreakpointMinimumInvestmentRequiredAmount50,000
Shareholder feesrr_ShareholderFeesAbstract 
Shareholder Fees Caption [Text]rr_ShareholderFeesCaptionShareholder fees (fees paid directly from your investment)
Annual fund operating expensesrr_OperatingExpensesAbstract 
Operating Expenses Caption [Text]rr_OperatingExpensesCaptionAnnual fund operating expenses (expenses you pay each year as a percentage of the value of your investment)
Expense Examplerr_ExpenseExampleAbstract 
Expense Example [Heading]rr_ExpenseExampleHeadingExample
Expense Example Narrative [Text Block]rr_ExpenseExampleNarrativeTextBlockThe following hypothetical example is intended to help you compare the cost of investing in the fund with the cost of investing in other funds. It assumes that you invest $10,000 in the fund for the time periods indicated and then, except as indicated, redeem all your shares at the end of those periods. It assumes a 5% return on your investment each year and that the fund’s operating expenses remain the same. Your actual costs may be higher or lower.
Portfolio turnoverpateif869392_PortfolioTurnoverAltAbstract 
Portfolio Turnover [Heading]rr_PortfolioTurnoverHeadingPortfolio turnover
Portfolio Turnover [Text Block]rr_PortfolioTurnoverTextBlockThe fund pays transaction-related costs when it buys and sells securities (or “turns over” its portfolio). A higher turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or the above example, affect fund performance. The fund’s turnover rate in the most recent fiscal year was 11%.
Portfolio Turnover, Raterr_PortfolioTurnoverRate11.00%
Strategy [Heading]rr_StrategyHeadingInvestments
Strategy Narrative [Text Block]rr_StrategyNarrativeTextBlockWe invest mainly in bonds that pay interest that is exempt from federal income tax and Ohio personal income tax (but that may be subject to federal alternative minimum tax (AMT)), are investment-grade in quality, and have intermediate-to long-term maturities (three years or longer). We may consider, among other factors, credit, interest rate and prepayment risks, as well as general market conditions, when deciding whether to buy or sell investments.
Strategy Portfolio Concentration [Text]rr_StrategyPortfolioConcentrationWe invest mainly in bonds that pay interest that is exempt from federal income tax and Ohio personal income tax (but that may be subject to federal alternative minimum tax (AMT)), are investment-grade in quality, and have intermediate-to long-term maturities (three years or longer).
Risk [Heading]rr_RiskHeadingRisks
Risk Narrative [Text Block]rr_RiskNarrativeTextBlock

It is important to understand that you can lose money by investing in the fund.

The prices of bonds in the fund’s portfolio may fall or fail to rise over extended periods of time for a variety of reasons, including both general financial market conditions and factors related to a specific issuer. The risks associated with bond investments include interest rate risk, which means the prices of the fund’s investments are likely to fall if interest rates rise. Bond investments also are subject to credit risk, which is the risk that the issuers of the fund’s investments may default on payment of interest or principal. Since the fund invests in tax-exempt bonds, which, to be treated as tax-exempt under the Internal Revenue Code, may be issued only by limited types of issuers for limited types of projects, the fund’s investments may be focused in certain market segments. Consequently, the fund may be more vulnerable to fluctuations in the values of the securities it holds than a fund that invests more broadly. Interest rate risk is generally greater for longer-term bonds, and credit risk is generally greater for below-investment-grade bonds. Investments in a single state carry risks of vulnerability to common economic forces and other factors affecting the state’s tax-exempt investments, which may result in greater losses and volatility. Interest the fund receives might be taxable.

The fund may not achieve its goal, and it is not intended to be a complete investment program. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Risk Lose Money [Text]rr_RiskLoseMoneyIt is important to understand that you can lose money by investing in the fund.
Risk Not Insured Depository Institution [Text]rr_RiskNotInsuredDepositoryInstitutionAn investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Performancepateif869392_FundPastPerformanceAbstract 
Bar Chart and Performance Table [Heading]rr_BarChartAndPerformanceTableHeadingPerformance
Performance Narrative [Text Block]rr_PerformanceNarrativeTextBlockThe performance information below gives some indication of the risks associated with an investment in the fund by showing the fund’s performance year to year and over time. The bar chart does not reflect the impact of sales charges. If it did, performance would be lower. Please remember that past performance is not necessarily an indication of future results. Monthly performance figures for the fund are available at putnam.com.
Performance Information Illustrates Variability of Returns [Text]rr_PerformanceInformationIllustratesVariabilityOfReturnsThe performance information below gives some indication of the risks associated with an investment in the fund by showing the fund’s performance year to year and over time.
Bar Chart Does Not Reflect Sales Loads [Text]rr_BarChartDoesNotReflectSalesLoadsThe bar chart does not reflect the impact of sales charges. If it did, performance would be lower.
Performance Past Does Not Indicate Future [Text]rr_PerformancePastDoesNotIndicateFuturePlease remember that past performance is not necessarily an indication of future results.
Performance Table Closing [Text Block]rr_PerformanceTableClosingTextBlockMonthly performance figures for the fund are available at putnam.com.
Performance Availability Website Address [Text]rr_PerformanceAvailabilityWebSiteAddressputnam.com
Annual Total Returnsrr_BarChartTableAbstract 
Bar Chart [Heading]rr_BarChartHeadingAnnual total returns for class A shares before sales charges
Bar Chart Closing [Text Block]rr_BarChartClosingTextBlock

Year-to-date performance

through 6/30/11

3.75%

Best calendar quarter

Q3 2009

7.12%

Worst calendar quarter

Q4 2010

-4.37%

Year to Date Return, Labelrr_YearToDateReturnLabelYear-to-date performance through
Bar Chart, Year to Date Return, Daterr_BarChartYearToDateReturnDateJun. 30, 2011
Bar Chart, Year to Date Returnrr_BarChartYearToDateReturn3.75%
Highest Quarterly Return, Labelrr_HighestQuarterlyReturnLabelBest calendar quarter
Highest Quarterly Return, Daterr_BarChartHighestQuarterlyReturnDateSep. 30, 2009
Highest Quarterly Returnrr_BarChartHighestQuarterlyReturn7.12%
Lowest Quarterly Return, Labelrr_LowestQuarterlyReturnLabelWorst calendar quarter
Lowest Quarterly Return, Daterr_BarChartLowestQuarterlyReturnDateDec. 31, 2010
Lowest Quarterly Returnrr_BarChartLowestQuarterlyReturn(4.37%)
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Captionrr_AverageAnnualReturnCaptionAverage annual total returns after sales charges (for periods ending 12/31/10)
Performance Table Narrativerr_PerformanceTableNarrativeTextBlock

After-tax returns reflect the historical highest individual federal marginal income tax rates and do not reflect state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are shown for class A shares only and will vary for other classes. These after-tax returns do not apply if you hold your fund shares through a 401(k) plan, an IRA, or another tax-advantaged arrangement.

Class B share performance does not reflect conversion to class A shares.

Performance Table Uses Highest Federal Raterr_PerformanceTableUsesHighestFederalRateAfter-tax returns reflect the historical highest individual federal marginal income tax rates and do not reflect state and local taxes.
Performance Table Not Relevant to Tax Deferredrr_PerformanceTableNotRelevantToTaxDeferredActual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Performance Table One Class of after Tax Shown [Text]rr_PerformanceTableOneClassOfAfterTaxShownAfter-tax returns are shown for class A shares only and will vary for other classes.
Putnam Ohio Tax Exempt Income Fund | Putnam Ohio Tax Exempt Income Fund | Class A
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass A
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice4.00%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther1.00%[1]
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass A
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.23%[2]
Other expensesrr_OtherExpensesOverAssets0.13%
Total annual fund operating expensesrr_ExpensesOverAssets0.80%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass A
1 yearrr_ExpenseExampleYear01478
3 yearsrr_ExpenseExampleYear03645
5 yearsrr_ExpenseExampleYear05826
10 yearsrr_ExpenseExampleYear101,350
Annual Total Returnsrr_BarChartTableAbstract 
2001rr_AnnualReturn20014.83%
2002rr_AnnualReturn20028.41%
2003rr_AnnualReturn20035.27%
2004rr_AnnualReturn20043.62%
2005rr_AnnualReturn20052.79%
2006rr_AnnualReturn20064.10%
2007rr_AnnualReturn20073.09%
2008rr_AnnualReturn2008(4.07%)
2009rr_AnnualReturn200913.12%
2010rr_AnnualReturn20100.82%
Putnam Ohio Tax Exempt Income Fund | Putnam Ohio Tax Exempt Income Fund | Class B
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass B
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther5.00%[3]
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass B
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.85%
Other expensesrr_OtherExpensesOverAssets0.13%
Total annual fund operating expensesrr_ExpensesOverAssets1.42%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass B
1 yearrr_ExpenseExampleYear01645
3 yearsrr_ExpenseExampleYear03749
5 yearsrr_ExpenseExampleYear05976
10 yearsrr_ExpenseExampleYear101,533
Expense Example, No Redemptionrr_ExpenseExampleNoRedemptionAbstract 
Share classrr_ExpenseExampleNoRedemptionByYearColumnNameClass B (no redemption)
1 yearrr_ExpenseExampleNoRedemptionYear01145
3 yearsrr_ExpenseExampleNoRedemptionYear03449
5 yearsrr_ExpenseExampleNoRedemptionYear05776
10 yearsrr_ExpenseExampleNoRedemptionYear101,533
Putnam Ohio Tax Exempt Income Fund | Putnam Ohio Tax Exempt Income Fund | Class C
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass C
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther1.00%
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass C
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets1.00%
Other expensesrr_OtherExpensesOverAssets0.13%
Total annual fund operating expensesrr_ExpensesOverAssets1.57%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass C
1 yearrr_ExpenseExampleYear01260
3 yearsrr_ExpenseExampleYear03496
5 yearsrr_ExpenseExampleYear05855
10 yearsrr_ExpenseExampleYear101,867
Expense Example, No Redemptionrr_ExpenseExampleNoRedemptionAbstract 
Share classrr_ExpenseExampleNoRedemptionByYearColumnNameClass C (no redemption)
1 yearrr_ExpenseExampleNoRedemptionYear01160
3 yearsrr_ExpenseExampleNoRedemptionYear03496
5 yearsrr_ExpenseExampleNoRedemptionYear05855
10 yearsrr_ExpenseExampleNoRedemptionYear101,867
Putnam Ohio Tax Exempt Income Fund | Putnam Ohio Tax Exempt Income Fund | Class M
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass M
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice3.25%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther none
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass M
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.50%
Other expensesrr_OtherExpensesOverAssets0.13%
Total annual fund operating expensesrr_ExpensesOverAssets1.07%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass M
1 yearrr_ExpenseExampleYear01431
3 yearsrr_ExpenseExampleYear03654
5 yearsrr_ExpenseExampleYear05896
10 yearsrr_ExpenseExampleYear101,588
Putnam Ohio Tax Exempt Income Fund | Putnam Ohio Tax Exempt Income Fund | Class Y
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass Y
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther none
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass Y
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets 
Other expensesrr_OtherExpensesOverAssets0.13%
Total annual fund operating expensesrr_ExpensesOverAssets0.57%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass Y
1 yearrr_ExpenseExampleYear0158
3 yearsrr_ExpenseExampleYear03183
5 yearsrr_ExpenseExampleYear05318
10 yearsrr_ExpenseExampleYear10714
Putnam Ohio Tax Exempt Income Fund | Putnam Ohio Tax Exempt Income Fund | before taxes | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(3.14%)
5 yearsrr_AverageAnnualReturnYear052.43%
10 yearsrr_AverageAnnualReturnYear103.67%
Putnam Ohio Tax Exempt Income Fund | Putnam Ohio Tax Exempt Income Fund | before taxes | Class B
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass B
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(4.65%)
5 yearsrr_AverageAnnualReturnYear052.27%
10 yearsrr_AverageAnnualReturnYear103.44%
Putnam Ohio Tax Exempt Income Fund | Putnam Ohio Tax Exempt Income Fund | before taxes | Class C
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass C
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(0.90%)
5 yearsrr_AverageAnnualReturnYear052.49%
10 yearsrr_AverageAnnualReturnYear103.32%
Putnam Ohio Tax Exempt Income Fund | Putnam Ohio Tax Exempt Income Fund | before taxes | Class M
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass M
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(2.69%)
5 yearsrr_AverageAnnualReturnYear052.30%
10 yearsrr_AverageAnnualReturnYear103.48%
Putnam Ohio Tax Exempt Income Fund | Putnam Ohio Tax Exempt Income Fund | before taxes | Class Y
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass Y
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear011.06%
5 yearsrr_AverageAnnualReturnYear053.43%
10 yearsrr_AverageAnnualReturnYear104.19%
Putnam Ohio Tax Exempt Income Fund | Putnam Ohio Tax Exempt Income Fund | after taxes on distributions | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelafter taxes on distributions
1 yearrr_AverageAnnualReturnYear01(3.14%)
5 yearsrr_AverageAnnualReturnYear052.42%
10 yearsrr_AverageAnnualReturnYear103.67%
Putnam Ohio Tax Exempt Income Fund | Putnam Ohio Tax Exempt Income Fund | after taxes on distributions and sale of fund shares | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelafter taxes on distributions and sale of fund shares
1 yearrr_AverageAnnualReturnYear01(0.66%)
5 yearsrr_AverageAnnualReturnYear052.66%
10 yearsrr_AverageAnnualReturnYear103.74%
Putnam Ohio Tax Exempt Income Fund | Putnam Ohio Tax Exempt Income Fund | Barclays Capital Municipal Bond Index
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Labelrr_AverageAnnualReturnLabelBarclays Capital Municipal Bond Index
Index No Deduction for Fees, Expenses, Taxes [Text]rr_IndexNoDeductionForFeesExpensesTaxes(no deduction for fees, expenses or taxes)
1 yearrr_AverageAnnualReturnYear012.38%
5 yearsrr_AverageAnnualReturnYear054.09%
10 yearsrr_AverageAnnualReturnYear104.83%
Putnam Pennsylvania Tax Exempt Income Fund | Putnam Pennsylvania Tax Exempt Income Fund
 
Risk/Return:rr_RiskReturnAbstract 
Risk/Return [Heading]rr_RiskReturnHeadingPutnam Pennsylvania Tax Exempt Income Fund
Objective [Heading]rr_ObjectiveHeadingGoal
Objective, Primary [Text Block]rr_ObjectivePrimaryTextBlockPutnam Pennsylvania Tax Exempt Income Fund seeks as high a level of current income exempt from federal income tax and Pennsylvania personal income tax as we believe is consistent with preservation of capital.
Fees and expensespateif869392_FundFeesAndExpensesAbstract 
Expense [Heading]rr_ExpenseHeadingFees and expenses
Expense Narrative [Text Block]rr_ExpenseNarrativeTextBlockThe following table describes the fees and expenses you may pay if you buy and hold shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in class A shares or $50,000 in class M shares of Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 37 of the fund’s prospectus and in How to buy shares beginning on page II-1 of the fund’s SAI.
Expense Breakpoint Discountspateif869392_ExpenseBreakpointDiscountsAbstract 
Expense Breakpoint Discounts [Text]rr_ExpenseBreakpointDiscountsYou may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in class A shares or $50,000 in class M shares of Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 37 of the fund’s prospectus and in How to buy shares beginning on page II-1 of the fund’s SAI.
Expense Breakpoint, Minimum Investment Required [Amount]rr_ExpenseBreakpointMinimumInvestmentRequiredAmount50,000
Shareholder feesrr_ShareholderFeesAbstract 
Shareholder Fees Caption [Text]rr_ShareholderFeesCaptionShareholder fees (fees paid directly from your investment)
Annual fund operating expensesrr_OperatingExpensesAbstract 
Operating Expenses Caption [Text]rr_OperatingExpensesCaptionAnnual fund operating expenses (expenses you pay each year as a percentage of the value of your investment)
Expense Examplerr_ExpenseExampleAbstract 
Expense Example [Heading]rr_ExpenseExampleHeadingExample
Expense Example Narrative [Text Block]rr_ExpenseExampleNarrativeTextBlockThe following hypothetical example is intended to help you compare the cost of investing in the fund with the cost of investing in other funds. It assumes that you invest $10,000 in the fund for the time periods indicated and then, except as indicated, redeem all your shares at the end of those periods. It assumes a 5% return on your investment each year and that the fund’s operating expenses remain the same. Your actual costs may be higher or lower.
Portfolio turnoverpateif869392_PortfolioTurnoverAltAbstract 
Portfolio Turnover [Heading]rr_PortfolioTurnoverHeadingPortfolio turnover
Portfolio Turnover [Text Block]rr_PortfolioTurnoverTextBlockThe fund pays transaction-related costs when it buys and sells securities (or “turns over” its portfolio). A higher turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or the above example, affect fund performance. The fund’s turnover rate in the most recent fiscal year was 13%.
Portfolio Turnover, Raterr_PortfolioTurnoverRate13.00%
Strategy [Heading]rr_StrategyHeadingInvestments
Strategy Narrative [Text Block]rr_StrategyNarrativeTextBlockWe invest mainly in bonds that pay interest that is exempt from federal income tax and Pennsylvania personal income tax (but that may be subject to federal alternative minimum tax (AMT)), are investment-grade in quality, and have intermediate- to long-term maturities (three years or longer). We may consider, among other factors, credit, interest rate and prepayment risks, as well as general market conditions, when deciding whether to buy or sell investments.
Strategy Portfolio Concentration [Text]rr_StrategyPortfolioConcentrationWe invest mainly in bonds that pay interest that is exempt from federal income tax and Pennsylvania personal income tax (but that may be subject to federal alternative minimum tax (AMT)), are investment-grade in quality, and have intermediate- to long-term maturities (three years or longer).
Risk [Heading]rr_RiskHeadingRisks
Risk Narrative [Text Block]rr_RiskNarrativeTextBlock

It is important to understand that you can lose money by investing in the fund.

The prices of bonds in the fund’s portfolio may fall or fail to rise over extended periods of time for a variety of reasons, including both general financial market conditions and factors related to a specific issuer. The risks associated with bond investments include interest rate risk, which means the prices of the fund’s investments are likely to fall if interest rates rise. Bond investments also are subject to credit risk, which is the risk that the issuers of the fund’s investments may default on payment of interest or principal. Since the fund invests in tax-exempt bonds, which, to be treated as tax-exempt under the Internal Revenue Code, may be issued only by limited types of issuers for limited types of projects, the fund’s investments may be focused in certain market segments. Consequently, the fund may be more vulnerable to fluctuations in the values of the securities it holds than a fund that invests more broadly. Interest rate risk is generally greater for longer-term bonds, and credit risk is generally greater for below-investment-grade bonds. Investments in a single state carry risks of vulnerability to common economic forces and other factors affecting the state’s tax-exempt investments, which may result in greater losses and volatility. Interest the fund receives might be taxable.

The fund may not achieve its goal, and it is not intended to be a complete investment program. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Risk Lose Money [Text]rr_RiskLoseMoneyIt is important to understand that you can lose money by investing in the fund.
Risk Not Insured Depository Institution [Text]rr_RiskNotInsuredDepositoryInstitutionAn investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Performancepateif869392_FundPastPerformanceAbstract 
Bar Chart and Performance Table [Heading]rr_BarChartAndPerformanceTableHeadingPerformance
Performance Narrative [Text Block]rr_PerformanceNarrativeTextBlockThe performance information below gives some indication of the risks associated with an investment in the fund by showing the fund’s performance year to year and over time. The bar chart does not reflect the impact of sales charges. If it did, performance would be lower. Please remember that past performance is not necessarily an indication of future results. Monthly performance figures for the fund are available at putnam.com.
Performance Information Illustrates Variability of Returns [Text]rr_PerformanceInformationIllustratesVariabilityOfReturnsThe performance information below gives some indication of the risks associated with an investment in the fund by showing the fund’s performance year to year and over time.
Bar Chart Does Not Reflect Sales Loads [Text]rr_BarChartDoesNotReflectSalesLoadsThe bar chart does not reflect the impact of sales charges. If it did, performance would be lower.
Performance Past Does Not Indicate Future [Text]rr_PerformancePastDoesNotIndicateFuturePlease remember that past performance is not necessarily an indication of future results.
Performance Table Closing [Text Block]rr_PerformanceTableClosingTextBlockMonthly performance figures for the fund are available at putnam.com.
Performance Availability Website Address [Text]rr_PerformanceAvailabilityWebSiteAddressputnam.com
Annual Total Returnsrr_BarChartTableAbstract 
Bar Chart [Heading]rr_BarChartHeadingAnnual total returns for class A shares before sales charges
Bar Chart Closing [Text Block]rr_BarChartClosingTextBlock

Year-to-date performance

through 6/30/11

3.51%

Best calendar quarter

Q3 2009

6.87%

Worst calendar quarter

Q4 2010

-4.41%

Year to Date Return, Labelrr_YearToDateReturnLabelYear-to-date performance through
Bar Chart, Year to Date Return, Daterr_BarChartYearToDateReturnDateJun. 30, 2011
Bar Chart, Year to Date Returnrr_BarChartYearToDateReturn3.51%
Highest Quarterly Return, Labelrr_HighestQuarterlyReturnLabelBest calendar quarter
Highest Quarterly Return, Daterr_BarChartHighestQuarterlyReturnDateSep. 30, 2009
Highest Quarterly Returnrr_BarChartHighestQuarterlyReturn6.87%
Lowest Quarterly Return, Labelrr_LowestQuarterlyReturnLabelWorst calendar quarter
Lowest Quarterly Return, Daterr_BarChartLowestQuarterlyReturnDateDec. 31, 2010
Lowest Quarterly Returnrr_BarChartLowestQuarterlyReturn(4.41%)
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Captionrr_AverageAnnualReturnCaptionAverage annual total returns after sales charges (for periods ending 12/31/10)
Performance Table Narrativerr_PerformanceTableNarrativeTextBlock

After-tax returns reflect the historical highest individual federal marginal income tax rates and do not reflect state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are shown for class A shares only and will vary for other classes. These after-tax returns do not apply if you hold your fund shares through a 401(k) plan, an IRA, or another tax-advantaged arrangement.

Class B share performance does not reflect conversion to class A shares.

Performance Table Uses Highest Federal Raterr_PerformanceTableUsesHighestFederalRateAfter-tax returns reflect the historical highest individual federal marginal income tax rates and do not reflect state and local taxes.
Performance Table Not Relevant to Tax Deferredrr_PerformanceTableNotRelevantToTaxDeferredActual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Performance Table One Class of after Tax Shown [Text]rr_PerformanceTableOneClassOfAfterTaxShownAfter-tax returns are shown for class A shares only and will vary for other classes.
Putnam Pennsylvania Tax Exempt Income Fund | Putnam Pennsylvania Tax Exempt Income Fund | Class A
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass A
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice4.00%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther1.00%[1]
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass A
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.23%[2]
Other expensesrr_OtherExpensesOverAssets0.12%
Total annual fund operating expensesrr_ExpensesOverAssets0.79%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass A
1 yearrr_ExpenseExampleYear01477
3 yearsrr_ExpenseExampleYear03642
5 yearsrr_ExpenseExampleYear05821
10 yearsrr_ExpenseExampleYear101,339
Annual Total Returnsrr_BarChartTableAbstract 
2001rr_AnnualReturn20015.66%
2002rr_AnnualReturn20028.53%
2003rr_AnnualReturn20035.04%
2004rr_AnnualReturn20044.36%
2005rr_AnnualReturn20053.11%
2006rr_AnnualReturn20064.22%
2007rr_AnnualReturn20072.84%
2008rr_AnnualReturn2008(5.87%)
2009rr_AnnualReturn200914.85%
2010rr_AnnualReturn20101.64%
Putnam Pennsylvania Tax Exempt Income Fund | Putnam Pennsylvania Tax Exempt Income Fund | Class B
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass B
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther5.00%[3]
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass B
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.85%
Other expensesrr_OtherExpensesOverAssets0.12%
Total annual fund operating expensesrr_ExpensesOverAssets1.41%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass B
1 yearrr_ExpenseExampleYear01644
3 yearsrr_ExpenseExampleYear03746
5 yearsrr_ExpenseExampleYear05971
10 yearsrr_ExpenseExampleYear101,522
Expense Example, No Redemptionrr_ExpenseExampleNoRedemptionAbstract 
Share classrr_ExpenseExampleNoRedemptionByYearColumnNameClass B (no redemption)
1 yearrr_ExpenseExampleNoRedemptionYear01144
3 yearsrr_ExpenseExampleNoRedemptionYear03446
5 yearsrr_ExpenseExampleNoRedemptionYear05771
10 yearsrr_ExpenseExampleNoRedemptionYear101,522
Putnam Pennsylvania Tax Exempt Income Fund | Putnam Pennsylvania Tax Exempt Income Fund | Class C
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass C
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther1.00%
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass C
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets1.00%
Other expensesrr_OtherExpensesOverAssets0.12%
Total annual fund operating expensesrr_ExpensesOverAssets1.56%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass C
1 yearrr_ExpenseExampleYear01259
3 yearsrr_ExpenseExampleYear03493
5 yearsrr_ExpenseExampleYear05850
10 yearsrr_ExpenseExampleYear101,856
Expense Example, No Redemptionrr_ExpenseExampleNoRedemptionAbstract 
Share classrr_ExpenseExampleNoRedemptionByYearColumnNameClass C (no redemption)
1 yearrr_ExpenseExampleNoRedemptionYear01159
3 yearsrr_ExpenseExampleNoRedemptionYear03493
5 yearsrr_ExpenseExampleNoRedemptionYear05850
10 yearsrr_ExpenseExampleNoRedemptionYear101,856
Putnam Pennsylvania Tax Exempt Income Fund | Putnam Pennsylvania Tax Exempt Income Fund | Class M
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass M
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice3.25%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther none
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass M
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets0.50%
Other expensesrr_OtherExpensesOverAssets0.12%
Total annual fund operating expensesrr_ExpensesOverAssets1.06%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass M
1 yearrr_ExpenseExampleYear01430
3 yearsrr_ExpenseExampleYear03651
5 yearsrr_ExpenseExampleYear05891
10 yearsrr_ExpenseExampleYear101,577
Putnam Pennsylvania Tax Exempt Income Fund | Putnam Pennsylvania Tax Exempt Income Fund | Class Y
 
Shareholder feesrr_ShareholderFeesAbstract 
Share classrr_ShareholderFeesColumnNameClass Y
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower)rr_MaximumDeferredSalesChargeOverOther none
Annual fund operating expensesrr_OperatingExpensesAbstract 
Share classrr_OperatingExpensesColumnNameClass Y
Management feesrr_ManagementFeesOverAssets0.44%
Distribution and service (12b-1) feesrr_DistributionAndService12b1FeesOverAssets 
Other expensesrr_OtherExpensesOverAssets0.12%
Total annual fund operating expensesrr_ExpensesOverAssets0.56%
Expense Examplerr_ExpenseExampleAbstract 
Share classrr_ExpenseExampleByYearColumnNameClass Y
1 yearrr_ExpenseExampleYear0157
3 yearsrr_ExpenseExampleYear03179
5 yearsrr_ExpenseExampleYear05313
10 yearsrr_ExpenseExampleYear10 701
Putnam Pennsylvania Tax Exempt Income Fund | Putnam Pennsylvania Tax Exempt Income Fund | before taxes | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(2.33%)
5 yearsrr_AverageAnnualReturnYear052.49%
10 yearsrr_AverageAnnualReturnYear103.89%
Putnam Pennsylvania Tax Exempt Income Fund | Putnam Pennsylvania Tax Exempt Income Fund | before taxes | Class B
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass B
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(3.88%)
5 yearsrr_AverageAnnualReturnYear052.31%
10 yearsrr_AverageAnnualReturnYear103.65%
Putnam Pennsylvania Tax Exempt Income Fund | Putnam Pennsylvania Tax Exempt Income Fund | before taxes | Class C
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass C
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(0.09%)
5 yearsrr_AverageAnnualReturnYear052.55%
10 yearsrr_AverageAnnualReturnYear103.54%
Putnam Pennsylvania Tax Exempt Income Fund | Putnam Pennsylvania Tax Exempt Income Fund | before taxes | Class M
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass M
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear01(1.90%)
5 yearsrr_AverageAnnualReturnYear052.36%
10 yearsrr_AverageAnnualReturnYear103.68%
Putnam Pennsylvania Tax Exempt Income Fund | Putnam Pennsylvania Tax Exempt Income Fund | before taxes | Class Y
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass Y
Labelrr_AverageAnnualReturnLabelbefore taxes
1 yearrr_AverageAnnualReturnYear011.89%
5 yearsrr_AverageAnnualReturnYear053.50%
10 yearsrr_AverageAnnualReturnYear104.40%
Putnam Pennsylvania Tax Exempt Income Fund | Putnam Pennsylvania Tax Exempt Income Fund | after taxes on distributions | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelafter taxes on distributions
1 yearrr_AverageAnnualReturnYear01(2.33%)
5 yearsrr_AverageAnnualReturnYear052.49%
10 yearsrr_AverageAnnualReturnYear103.89%
Putnam Pennsylvania Tax Exempt Income Fund | Putnam Pennsylvania Tax Exempt Income Fund | after taxes on distributions and sale of fund shares | Class A
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Share classrr_AverageAnnualReturnColumnNameClass A
Labelrr_AverageAnnualReturnLabelafter taxes on distributions and sale of fund shares
1 yearrr_AverageAnnualReturnYear01(0.13%)
5 yearsrr_AverageAnnualReturnYear052.70%
10 yearsrr_AverageAnnualReturnYear103.94%
Putnam Pennsylvania Tax Exempt Income Fund | Putnam Pennsylvania Tax Exempt Income Fund | Barclays Capital Municipal Bond Index
 
Average Annual Total Returnsrr_AverageAnnualReturnAbstract 
Labelrr_AverageAnnualReturnLabelBarclays Capital Municipal Bond Index
Index No Deduction for Fees, Expenses, Taxes [Text]rr_IndexNoDeductionForFeesExpensesTaxes(no deduction for fees, expenses or taxes)
1 yearrr_AverageAnnualReturnYear012.38%
5 yearsrr_AverageAnnualReturnYear054.09%
10 yearsrr_AverageAnnualReturnYear104.83%
[1]Applies only to certain redemptions of shares bought with no initial sales charge.
[2]Represents a blended rate.
[3]This charge is phased out over six years.