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Risk/Return:rr_RiskReturnAbstract 
Document Typedei_DocumentType485BPOS
Document Period End Datedei_DocumentPeriodEndDateJun. 30, 2011
Registrant Namedei_EntityRegistrantNameFRANKLIN CALIFORNIA TAX FREE TRUST
Central Index Keydei_EntityCentralIndexKey0000773478
Amendment Flagdei_AmendmentFlagfalse
Document Creation Datedei_DocumentCreationDateOct. 27, 2011
Document Effective Datedei_DocumentEffectiveDateNov. 01, 2011
Prospectus Daterr_ProspectusDateNov. 01, 2011
Risk/Return [Heading]rr_RiskReturnHeadingFund Summary
Franklin California Insured Tax-Free Income Fund
 
Risk/Return:rr_RiskReturnAbstract 
Objective [Heading]rr_ObjectiveHeadingInvestment Goal
Objective, Primary [Text Block]rr_ObjectivePrimaryTextBlockTo provide investors with as high a level of income exempt from federal income taxes and California personal income taxes as is consistent with prudent investment management and the preservation of shareholders' capital.
Expense [Heading]rr_ExpenseHeadingFees and Expenses of the Fund
Expense Narrative [Text Block]rr_ExpenseNarrativeTextBlockThese tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds. More information about these and other discounts is available from your financial professional and under “Your Account” on page 62 in the Fund's Prospectus and under “Buying and Selling Shares” on page 35 of the Fund’s Statement of Additional Information.
Shareholder Fees Caption [Text]rr_ShareholderFeesCaptionSHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Text]rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES

(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]rr_PortfolioTurnoverHeadingPortfolio Turnover
Portfolio Turnover [Text Block]rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 12.49% of the average value of its portfolio.

Portfolio Turnover, Raterr_PortfolioTurnoverRate12.49%
Expense Breakpoint Discounts [Text]rr_ExpenseBreakpointDiscountsYou may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds.
Expense Breakpoint, Minimum Investment Required [Amount]rr_ExpenseBreakpointMinimumInvestmentRequiredAmount 100,000
Expense Example [Heading]rr_ExpenseExampleHeadingExample
Expense Example Narrative [Text Block]rr_ExpenseExampleNarrativeTextBlockThis Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, No Redemption, By Year, Caption [Text]rr_ExpenseExampleNoRedemptionByYearCaptionIf you do not sell your shares:
Strategy [Heading]rr_StrategyHeadingPrincipal Investment Strategies
Strategy Narrative [Text Block]rr_StrategyNarrativeTextBlock

Under normal market conditions, the Fund invests at least 80% of its net assets in securities that pay interest free from federal income taxes, including the federal alternative minimum tax, and from California personal income taxes. Under normal market conditions, the Fund invests at least 65% of its total assets in California municipal securities. The Fund also may invest up to 35% of its total assets in municipal securities issued by U.S. territories. Although the Fund tries to invest all of its assets in tax-free securities, it is possible, although not anticipated, that up to 20% of the Fund's net assets may be in securities that pay taxable interest, including interest that may be subject to the federal alternative minimum tax. Many of the Fund's portfolio securities are supported by credit enhancements, which may be provided by either U.S. or foreign entities.

The Fund invests at least 80% of its net assets in insured municipal securities. Insured municipal securities are covered by insurance policies that guarantee the timely payment of principal and interest. Generally, under normal market conditions, the Fund invests in insured municipal securities covered by policies issues by municipal bond insurers rated at least BBB.

The Fund generally purchases bonds that have insurance in place so it does not pay insurance premiums directly. The premium costs, however, are reflected in a lower yield and/or higher price for the insured bond. When the Fund believes it could be beneficial, the Fund may purchase insurance for an uninsured bond directly from a qualified municipal bond insurer, in which case the Fund pays the insurance premium directly to the insurance company. It is important to note that insurance does not guarantee the market value of an insured security, or the Fund’s share price or distributions, and shares of the Fund are not insured.

Although the investment manager will search for investments across a large number of municipal securities that finance different types of projects, from time to time, based on economic conditions, the Fund may have significant positions in municipal securities that finance similar types of projects.

The investment manager selects securities that it believes will provide the best balance between risk and return within the Fund’s range of allowable investments and typically uses a buy and hold strategy. This means it holds securities in the Fund’s portfolio for income purposes, rather than trading securities for capital gains, although the investment manager may sell a security at any time if it believes it could help the Fund meet its goal. The investment manager also may consider the cost of insurance when selecting securities for the Fund.

Strategy Portfolio Concentration [Text]rr_StrategyPortfolioConcentrationUnder normal market conditions, the Fund invests at least 80% of its net assets in securities that pay interest free from federal income taxes, including the federal alternative minimum tax, and from California personal income taxes.
Risk [Heading]rr_RiskHeadingPrincipal Risks
Risk Narrative [Text Block]rr_RiskNarrativeTextBlock

You could lose money by investing in the Fund. Mutual fund shares are not deposits or obligations of, or guaranteed or endorsed by, any bank, and are not insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other agency of the U.S. government.

Interest Rate

When interest rates rise, debt security prices generally fall. The opposite is also generally true: debt security prices rise when interest rates fall. In general, securities with longer maturities are more sensitive to these interest rate changes.

Credit

An issuer of debt securities may fail to make interest payments and repay principal when due, in whole or in part. Changes in an issuer's financial strength or in a security's credit rating may affect a security's value.

A change in the credit rating of any one or more of the municipal bond insurers that insure securities in the Fund’s portfolio may affect the value of the securities they insure, the Fund’s share price and Fund performance. The Fund might also be adversely impacted by the inability of an insurer to meet its insurance obligations.

Bond Insurers' Downgrade Risk

Market conditions or changes to ratings criteria could adversely impact the ratings of municipal bond insurance companies. A downgrade of municipal bond insurers rated BBB or above would substantially limit the availability of insurance sought by municipal bond issuers thereby reducing the supply of insured municipal securities which meet the Fund’s investment guidelines.

California and U.S. Territories

Because the Fund invests predominantly in California municipal securities, events in California are likely to affect the Fund's investments and its performance. These events may include economic or political policy changes, tax base erosion, state constitutional limits on tax increases, budget deficits and other financial difficulties, and changes in the credit ratings assigned to municipal issuers of California. As with California municipal securities, events in any of the territories where the Fund is invested may affect the Fund's investments and its performance.

Tax-Exempt Securities

While the Fund endeavors to purchase only bona fide tax-exempt securities, there are risks that: (a) a security issued as tax-exempt may be reclassified as taxable by the Internal Revenue Service or a state tax authority, and/or (b) future legislative, administrative or court actions could adversely impact the qualification of income from a tax-exempt security as tax-free. Such reclassifications or actions could cause interest from a security to become taxable, possibly retroactively, subjecting you to increased tax liability.

Income

Because the Fund can only distribute what it earns, the Fund's distributions to shareholders may decline when prevailing interest rates fall or when the Fund experiences defaults on debt securities it holds.

Prepayment

Prepayment risk occurs when a debt security can be repaid in whole or in part prior to the security's maturity and the Fund must reinvest the proceeds it receives, during periods of declining interest rates, in securities that pay a lower rate of interest.

Market

The market value of securities owned by the Fund will go up and down, sometimes rapidly or unpredictably. A security’s market value may be reduced by market activity or other results of supply and demand unrelated to the issuer. This is a basic risk associated with all securities. When there are more sellers than buyers, prices tend to fall. Likewise, when there are more buyers than sellers, prices tend to rise.

Focus

The Fund may invest more than 25% of its assets in municipal securities that finance similar types of projects, such as hospitals, higher education, housing, industrial development, and transportation or pollution control. A change that affects one project, such as proposed legislation on the financing of the project, a shortage of the materials needed for the project, or a declining need for the project, would likely affect all similar projects, thereby increasing market risk.

Management

The Fund is subject to management risk because it is an actively managed investment portfolio. The Fund's investment manager applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these decisions will produce the desired results.

Bar Chart and Performance Table [Heading]rr_BarChartAndPerformanceTableHeadingPerformance
Performance Narrative [Text Block]rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for Class A shares. The table shows how the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information at franklintempleton.com or by calling (800) DIAL BEN/342-5236.

Sales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.

Performance Information Illustrates Variability of Returns [Text]rr_PerformanceInformationIllustratesVariabilityOfReturnsThe following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for Class A shares. The table shows how the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable, compared with those of a broad measure of market performance.
Performance Availability Phone [Text]rr_PerformanceAvailabilityPhone(800) DIAL BEN/342-5236
Performance Availability Website Address [Text]rr_PerformanceAvailabilityWebSiteAddressfranklintempleton.com
Performance Past Does Not Indicate Future [Text]rr_PerformancePastDoesNotIndicateFutureThe Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading]rr_BarChartHeadingCLASS A ANNUAL TOTAL RETURNS
Bar Chart Does Not Reflect Sales Loads [Text]rr_BarChartDoesNotReflectSalesLoadsSales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.
Bar Chart Closing [Text Block]rr_BarChartClosingTextBlock
Best Quarter:Q3'098.75%
Worst Quarter:Q4'10-5.71%
As of September 30, 2011, the Fund's year-to-date return was 9.87%.
Performance Table Headingrr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS
(figures reflect sales charges)

For the periods ended December 31, 2010

Performance Table Closing [Text Block]rr_PerformanceTableClosingTextBlock

Historical performance for Advisor Class shares prior to their inception is based on the performance of Class A shares. Advisor Class performance has been adjusted to reflect differences in sales charges between classes.

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of 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 only for Class A and after-tax returns for other classes will vary.

Franklin California Insured Tax-Free Income Fund | Class A
 
Risk/Return:rr_RiskReturnAbstract 
Maximum Cumulative Sales Charge (as a percentage of Offering Price)rr_MaximumCumulativeSalesChargeOverOfferingPrice4.25%
Maximum Deferred Sales Charge (as a percentage of Offering Price)rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fees (as a percentage of Assets)rr_ManagementFeesOverAssets0.46%
Distribution and Service (12b-1) Feesrr_DistributionAndService12b1FeesOverAssets0.10%
Other Expenses (as a percentage of Assets):rr_OtherExpensesOverAssets0.05%
Expenses (as a percentage of Assets)rr_ExpensesOverAssets0.61%
Expense Example, with Redemption, 1 Yearrr_ExpenseExampleYear01485
Expense Example, with Redemption, 3 Yearsrr_ExpenseExampleYear03612
Expense Example, with Redemption, 5 Yearsrr_ExpenseExampleYear05751
Expense Example, with Redemption, 10 Yearsrr_ExpenseExampleYear101,155
Annual Return 2001rr_AnnualReturn20014.67%
Annual Return 2002rr_AnnualReturn20027.83%
Annual Return 2003rr_AnnualReturn20034.91%
Annual Return 2004rr_AnnualReturn20044.72%
Annual Return 2005rr_AnnualReturn20054.49%
Annual Return 2006rr_AnnualReturn20064.60%
Annual Return 2007rr_AnnualReturn20072.93%
Annual Return 2008rr_AnnualReturn2008(6.90%)
Annual Return 2009rr_AnnualReturn200911.62%
Annual Return 2010rr_AnnualReturn20101.48%
Year to Date Return, Labelrr_YearToDateReturnLabelAs of September 30, 2011, the Fund's year-to-date return was 9.87%.
Highest Quarterly Return, Labelrr_HighestQuarterlyReturnLabelBest Quarter:
Highest Quarterly Return, Daterr_BarChartHighestQuarterlyReturnDateSep. 30, 2009
Highest Quarterly Returnrr_BarChartHighestQuarterlyReturn8.75%
Lowest Quarterly Return, Labelrr_LowestQuarterlyReturnLabelWorst Quarter:
Lowest Quarterly Return, Daterr_BarChartLowestQuarterlyReturnDateDec. 31, 2010
Lowest Quarterly Returnrr_BarChartLowestQuarterlyReturn(5.71%)
Labelrr_AverageAnnualReturnLabelReturn Before Taxes
1 Yearrr_AverageAnnualReturnYear01(2.86%)
5 Yearsrr_AverageAnnualReturnYear051.69%
10 Yearsrr_AverageAnnualReturnYear103.48%
Franklin California Insured Tax-Free Income Fund | Class A | After Taxes on Distributions
 
Risk/Return:rr_RiskReturnAbstract 
1 Yearrr_AverageAnnualReturnYear01(2.86%)
5 Yearsrr_AverageAnnualReturnYear051.69%
10 Yearsrr_AverageAnnualReturnYear103.48%
Franklin California Insured Tax-Free Income Fund | Class A | After Taxes on Distributions and Sales
 
Risk/Return:rr_RiskReturnAbstract 
1 Yearrr_AverageAnnualReturnYear01(0.28%)
5 Yearsrr_AverageAnnualReturnYear052.09%
10 Yearsrr_AverageAnnualReturnYear103.63%
Franklin California Insured Tax-Free Income Fund | Class B
 
Risk/Return:rr_RiskReturnAbstract 
Maximum Cumulative Sales Charge (as a percentage of Offering Price)rr_MaximumCumulativeSalesChargeOverOfferingPrice none [1]
Maximum Deferred Sales Charge (as a percentage of Offering Price)rr_MaximumDeferredSalesChargeOverOfferingPrice4.00%[1]
Management Fees (as a percentage of Assets)rr_ManagementFeesOverAssets0.46%
Distribution and Service (12b-1) Feesrr_DistributionAndService12b1FeesOverAssets0.65%
Other Expenses (as a percentage of Assets):rr_OtherExpensesOverAssets0.05%
Expenses (as a percentage of Assets)rr_ExpensesOverAssets1.16%
Expense Example, with Redemption, 1 Yearrr_ExpenseExampleYear01518
Expense Example, with Redemption, 3 Yearsrr_ExpenseExampleYear03668
Expense Example, with Redemption, 5 Yearsrr_ExpenseExampleYear05838
Expense Example, with Redemption, 10 Yearsrr_ExpenseExampleYear101,255
Expense Example, No Redemption, 1 Yearrr_ExpenseExampleNoRedemptionYear01118
Expense Example, No Redemption, 3 Yearsrr_ExpenseExampleNoRedemptionYear03368
Expense Example, No Redemption, 5 Yearsrr_ExpenseExampleNoRedemptionYear05638
Expense Example, No Redemption, 10 Yearsrr_ExpenseExampleNoRedemptionYear101,255
1 Yearrr_AverageAnnualReturnYear01(2.96%)
5 Yearsrr_AverageAnnualReturnYear051.66%
10 Yearsrr_AverageAnnualReturnYear103.49%
Franklin California Insured Tax-Free Income Fund | Class C
 
Risk/Return:rr_RiskReturnAbstract 
Maximum Cumulative Sales Charge (as a percentage of Offering Price)rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price)rr_MaximumDeferredSalesChargeOverOfferingPrice1.00%
Management Fees (as a percentage of Assets)rr_ManagementFeesOverAssets0.46%
Distribution and Service (12b-1) Feesrr_DistributionAndService12b1FeesOverAssets0.65%
Other Expenses (as a percentage of Assets):rr_OtherExpensesOverAssets0.05%
Expenses (as a percentage of Assets)rr_ExpensesOverAssets1.16%
Expense Example, with Redemption, 1 Yearrr_ExpenseExampleYear01218
Expense Example, with Redemption, 3 Yearsrr_ExpenseExampleYear03368
Expense Example, with Redemption, 5 Yearsrr_ExpenseExampleYear05638
Expense Example, with Redemption, 10 Yearsrr_ExpenseExampleYear101,409
Expense Example, No Redemption, 1 Yearrr_ExpenseExampleNoRedemptionYear01118
Expense Example, No Redemption, 3 Yearsrr_ExpenseExampleNoRedemptionYear03368
Expense Example, No Redemption, 5 Yearsrr_ExpenseExampleNoRedemptionYear05638
Expense Example, No Redemption, 10 Yearsrr_ExpenseExampleNoRedemptionYear101,409
1 Yearrr_AverageAnnualReturnYear010.01%
5 Yearsrr_AverageAnnualReturnYear052.01%
10 Yearsrr_AverageAnnualReturnYear103.37%
Franklin California Insured Tax-Free Income Fund | Advisor Class
 
Risk/Return:rr_RiskReturnAbstract 
Maximum Cumulative Sales Charge (as a percentage of Offering Price)rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price)rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fees (as a percentage of Assets)rr_ManagementFeesOverAssets0.46%
Distribution and Service (12b-1) Feesrr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets):rr_OtherExpensesOverAssets0.05%
Expenses (as a percentage of Assets)rr_ExpensesOverAssets0.51%
Expense Example, with Redemption, 1 Yearrr_ExpenseExampleYear0152
Expense Example, with Redemption, 3 Yearsrr_ExpenseExampleYear03164
Expense Example, with Redemption, 5 Yearsrr_ExpenseExampleYear05285
Expense Example, with Redemption, 10 Yearsrr_ExpenseExampleYear10640
1 Yearrr_AverageAnnualReturnYear011.58%
5 Yearsrr_AverageAnnualReturnYear052.63%
10 Yearsrr_AverageAnnualReturnYear103.96%
Franklin California Insured Tax-Free Income Fund | Barclays Capital Municipal Bond Index
 
Risk/Return:rr_RiskReturnAbstract 
1 Yearrr_AverageAnnualReturnYear012.38%
5 Yearsrr_AverageAnnualReturnYear054.09%
10 Yearsrr_AverageAnnualReturnYear104.83%
Franklin California Intermediate-Term Tax-Free Income Fund
 
Risk/Return:rr_RiskReturnAbstract 
Objective [Heading]rr_ObjectiveHeadingInvestment Goal
Objective, Primary [Text Block]rr_ObjectivePrimaryTextBlockTo provide investors with as high a level of income exempt from federal income taxes and California personal income taxes as is consistent with prudent investment management and the preservation of shareholders' capital.
Expense [Heading]rr_ExpenseHeadingFees and Expenses of the Fund
Expense Narrative [Text Block]rr_ExpenseNarrativeTextBlockThese tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds. More information about these and other discounts is available from your financial professional and under “Your Account” on page 62 in the Fund's Prospectus and under “Buying and Selling Shares” on page 35 of the Fund’s Statement of Additional Information.
Shareholder Fees Caption [Text]rr_ShareholderFeesCaptionSHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Text]rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES

(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]rr_PortfolioTurnoverHeadingPortfolio Turnover
Portfolio Turnover [Text Block]rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 9.42% of the average value of its portfolio.

Portfolio Turnover, Raterr_PortfolioTurnoverRate9.42%
Expense Breakpoint Discounts [Text]rr_ExpenseBreakpointDiscountsYou may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds.
Expense Breakpoint, Minimum Investment Required [Amount]rr_ExpenseBreakpointMinimumInvestmentRequiredAmount100,000
Expense Example [Heading]rr_ExpenseExampleHeadingExample
Expense Example Narrative [Text Block]rr_ExpenseExampleNarrativeTextBlockThis Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, No Redemption, By Year, Caption [Text]rr_ExpenseExampleNoRedemptionByYearCaptionIf you do not sell your shares:
Strategy [Heading]rr_StrategyHeadingPrincipal Investment Strategies
Strategy Narrative [Text Block]rr_StrategyNarrativeTextBlock

Under normal market conditions, the Fund invests at least 80% of its total assets in securities that pay interest free from federal income taxes, including the federal alternative minimum tax, and from California personal income taxes. Under normal market conditions, the Fund invests at least 65% of its total assets in California municipal securities. The Fund also may invest up to 35% of its total assets in municipal securities issued by U.S. territories. Although the Fund tries to invest all of its assets in tax-free securities, it is possible, although not anticipated, that up to 20% of its total assets may be in securities that pay taxable interest, including interest that may be subject to the federal alternative minimum tax. Many of the Fund's portfolio securities are supported by credit enhancements, which may be provided by either U.S. or foreign entities.

The Fund maintains a dollar-weighted average portfolio maturity of three to ten years and only buys securities rated in the top four rating categories by U.S. nationally recognized rating services (or unrated or short-term rated securities the investment manager deems to be comparable).

Although the investment manager will search for investments across a large number of municipal securities that finance different types of projects, from time to time, based on economic conditions, the Fund may have significant positions in municipal securities that finance similar types of projects.

The investment manager selects securities that it believes will provide the best balance between risk and return within the Fund’s range of allowable investments and typically uses a buy and hold strategy. This means it holds securities in the Fund’s portfolio for income purposes, rather than trading securities for capital gains, although the investment manager may sell a security at any time if it believes it could help the Fund meet its goal. The investment manager also may consider the cost of insurance when selecting securities for the Fund.

Strategy Portfolio Concentration [Text]rr_StrategyPortfolioConcentrationUnder normal market conditions, the Fund invests at least 80% of its total assets in securities that pay interest free from federal income taxes, including the federal alternative minimum tax, and from California personal income taxes.
Risk [Heading]rr_RiskHeadingPrincipal Risks
Risk Narrative [Text Block]rr_RiskNarrativeTextBlock

You could lose money by investing in the Fund. Mutual fund shares are not deposits or obligations of, or guaranteed or endorsed by, any bank, and are not insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other agency of the U.S. government.

Interest Rate

When interest rates rise, debt security prices generally fall. The opposite is also generally true: debt security prices rise when interest rates fall. In general, securities with longer maturities are more sensitive to these interest rate changes.

Credit

An issuer of debt securities may fail to make interest payments and repay principal when due, in whole or in part. Changes in an issuer's financial strength or in a security's credit rating may affect a security's value.

A change in the credit rating of any one or more of the municipal bond insurers that insure securities in the Fund’s portfolio may affect the value of the securities they insure, the Fund’s share price and Fund performance. The Fund might also be adversely impacted by the inability of an insurer to meet its insurance obligations.

California and U.S. Territories

Because the Fund invests predominantly in California municipal securities, events in California are likely to affect the Fund's investments and its performance. These events may include economic or political policy changes, tax base erosion, state constitutional limits on tax increases, budget deficits and other financial difficulties, and changes in the credit ratings assigned to municipal issuers of California. As with California municipal securities, events in any of the territories where the Fund is invested may affect the Fund's investments and its performance.

Tax-Exempt Securities

While the Fund endeavors to purchase only bona fide tax-exempt securities, there are risks that: (a) a security issued as tax-exempt may be reclassified as taxable by the Internal Revenue Service or a state tax authority, and/or (b) future legislative, administrative or court actions could adversely impact the qualification of income from a tax-exempt security as tax-free. Such reclassifications or actions could cause interest from a security to become taxable, possibly retroactively, subjecting you to increased tax liability.

Income

Because the Fund can only distribute what it earns, the Fund's distributions to shareholders may decline when prevailing interest rates fall or when the Fund experiences defaults on debt securities it holds.

Prepayment

Prepayment risk occurs when a debt security can be repaid in whole or in part prior to the security's maturity and the Fund must reinvest the proceeds it receives, during periods of declining interest rates, in securities that pay a lower rate of interest.

Market

The market value of securities owned by the Fund will go up and down, sometimes rapidly or unpredictably. A security’s market value may be reduced by market activity or other results of supply and demand unrelated to the issuer. This is a basic risk associated with all securities. When there are more sellers than buyers, prices tend to fall. Likewise, when there are more buyers than sellers, prices tend to rise.

Focus

The Fund may invest more than 25% of its assets in municipal securities that finance similar types of projects, such as hospitals, higher education, housing, industrial development, and transportation or pollution control. A change that affects one project, such as proposed legislation on the financing of the project, a shortage of the materials needed for the project, or a declining need for the project, would likely affect all similar projects, thereby increasing market risk.

Management

The Fund is subject to management risk because it is an actively managed investment portfolio. The Fund's investment manager applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these decisions will produce the desired results.

Bar Chart and Performance Table [Heading]rr_BarChartAndPerformanceTableHeadingPerformance
Performance Narrative [Text Block]rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for Class A shares. The table shows how the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information at franklintempleton.com or by calling (800) DIAL BEN/342-5236.

Sales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.

Performance Information Illustrates Variability of Returns [Text]rr_PerformanceInformationIllustratesVariabilityOfReturnsThe following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for Class A shares. The table shows how the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable, compared with those of a broad measure of market performance.
Performance Availability Phone [Text]rr_PerformanceAvailabilityPhone(800) DIAL BEN/342-5236
Performance Availability Website Address [Text]rr_PerformanceAvailabilityWebSiteAddressfranklintempleton.com
Performance Past Does Not Indicate Future [Text]rr_PerformancePastDoesNotIndicateFutureThe Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading]rr_BarChartHeadingCLASS A ANNUAL TOTAL RETURNS
Bar Chart Does Not Reflect Sales Loads [Text]rr_BarChartDoesNotReflectSalesLoadsSales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.
Bar Chart Closing [Text Block]rr_BarChartClosingTextBlock
Best Quarter:Q3'097.14%
Worst Quarter:Q4'10-4.03%
As of September 30, 2011, the Fund's year-to-date return was 7.33%.
Performance Table Headingrr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS
(figures reflect sales charges)

For the periods ended December 31, 2010

Performance Table Closing [Text Block]rr_PerformanceTableClosingTextBlock

Historical performance for Advisor Class shares prior to their inception is based on the performance of Class A shares. Advisor Class performance has been adjusted to reflect differences in sales charges between classes.

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of 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 only for Class A and after-tax returns for other classes will vary.

Franklin California Intermediate-Term Tax-Free Income Fund | Class A
 
Risk/Return:rr_RiskReturnAbstract 
Maximum Cumulative Sales Charge (as a percentage of Offering Price)rr_MaximumCumulativeSalesChargeOverOfferingPrice2.25%
Maximum Deferred Sales Charge (as a percentage of Offering Price)rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fees (as a percentage of Assets)rr_ManagementFeesOverAssets0.48%
Distribution and Service (12b-1) Feesrr_DistributionAndService12b1FeesOverAssets0.10%
Other Expenses (as a percentage of Assets):rr_OtherExpensesOverAssets0.06%
Expenses (as a percentage of Assets)rr_ExpensesOverAssets0.64%
Expense Example, with Redemption, 1 Yearrr_ExpenseExampleYear01289
Expense Example, with Redemption, 3 Yearsrr_ExpenseExampleYear03425
Expense Example, with Redemption, 5 Yearsrr_ExpenseExampleYear05574
Expense Example, with Redemption, 10 Yearsrr_ExpenseExampleYear101,005
Annual Return 2001rr_AnnualReturn20014.47%
Annual Return 2002rr_AnnualReturn20027.70%
Annual Return 2003rr_AnnualReturn20033.97%
Annual Return 2004rr_AnnualReturn20043.97%
Annual Return 2005rr_AnnualReturn20052.48%
Annual Return 2006rr_AnnualReturn20063.88%
Annual Return 2007rr_AnnualReturn20073.14%
Annual Return 2008rr_AnnualReturn2008(5.24%)
Annual Return 2009rr_AnnualReturn200912.36%
Annual Return 2010rr_AnnualReturn20103.16%
Year to Date Return, Labelrr_YearToDateReturnLabelAs of September 30, 2011, the Fund's year-to-date return was 7.33%.
Highest Quarterly Return, Labelrr_HighestQuarterlyReturnLabelBest Quarter:
Highest Quarterly Return, Daterr_BarChartHighestQuarterlyReturnDateSep. 30, 2009
Highest Quarterly Returnrr_BarChartHighestQuarterlyReturn7.14%
Lowest Quarterly Return, Labelrr_LowestQuarterlyReturnLabelWorst Quarter:
Lowest Quarterly Return, Daterr_BarChartLowestQuarterlyReturnDateDec. 31, 2010
Lowest Quarterly Returnrr_BarChartLowestQuarterlyReturn(4.03%)
Labelrr_AverageAnnualReturnLabelReturn Before Taxes
1 Yearrr_AverageAnnualReturnYear010.83%
5 Yearsrr_AverageAnnualReturnYear052.85%
10 Yearsrr_AverageAnnualReturnYear103.67%
Franklin California Intermediate-Term Tax-Free Income Fund | Class A | After Taxes on Distributions
 
Risk/Return:rr_RiskReturnAbstract 
1 Yearrr_AverageAnnualReturnYear010.83%
5 Yearsrr_AverageAnnualReturnYear052.85%
10 Yearsrr_AverageAnnualReturnYear103.67%
Franklin California Intermediate-Term Tax-Free Income Fund | Class A | After Taxes on Distributions and Sales
 
Risk/Return:rr_RiskReturnAbstract 
1 Yearrr_AverageAnnualReturnYear011.93%
5 Yearsrr_AverageAnnualReturnYear053.00%
10 Yearsrr_AverageAnnualReturnYear103.71%
Franklin California Intermediate-Term Tax-Free Income Fund | Class C
 
Risk/Return:rr_RiskReturnAbstract 
Maximum Cumulative Sales Charge (as a percentage of Offering Price)rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price)rr_MaximumDeferredSalesChargeOverOfferingPrice1.00%
Management Fees (as a percentage of Assets)rr_ManagementFeesOverAssets0.48%
Distribution and Service (12b-1) Feesrr_DistributionAndService12b1FeesOverAssets0.65%
Other Expenses (as a percentage of Assets):rr_OtherExpensesOverAssets0.06%
Expenses (as a percentage of Assets)rr_ExpensesOverAssets1.19%
Expense Example, with Redemption, 1 Yearrr_ExpenseExampleYear01221
Expense Example, with Redemption, 3 Yearsrr_ExpenseExampleYear03378
Expense Example, with Redemption, 5 Yearsrr_ExpenseExampleYear05654
Expense Example, with Redemption, 10 Yearsrr_ExpenseExampleYear101,443
Expense Example, No Redemption, 1 Yearrr_ExpenseExampleNoRedemptionYear01121
Expense Example, No Redemption, 3 Yearsrr_ExpenseExampleNoRedemptionYear03378
Expense Example, No Redemption, 5 Yearsrr_ExpenseExampleNoRedemptionYear05654
Expense Example, No Redemption, 10 Yearsrr_ExpenseExampleNoRedemptionYear101,443
1 Yearrr_AverageAnnualReturnYear011.58%
5 Yearsrr_AverageAnnualReturnYear052.76%
10 Yearsrr_AverageAnnualReturnYear102.67%[2]
Franklin California Intermediate-Term Tax-Free Income Fund | Advisor Class
 
Risk/Return:rr_RiskReturnAbstract 
Maximum Cumulative Sales Charge (as a percentage of Offering Price)rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price)rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fees (as a percentage of Assets)rr_ManagementFeesOverAssets0.48%
Distribution and Service (12b-1) Feesrr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets):rr_OtherExpensesOverAssets0.06%
Expenses (as a percentage of Assets)rr_ExpensesOverAssets0.54%
Expense Example, with Redemption, 1 Yearrr_ExpenseExampleYear0155
Expense Example, with Redemption, 3 Yearsrr_ExpenseExampleYear03173
Expense Example, with Redemption, 5 Yearsrr_ExpenseExampleYear05302
Expense Example, with Redemption, 10 Yearsrr_ExpenseExampleYear10677
1 Yearrr_AverageAnnualReturnYear013.25%
5 Yearsrr_AverageAnnualReturnYear053.37%
10 Yearsrr_AverageAnnualReturnYear103.93%
Franklin California Intermediate-Term Tax-Free Income Fund | Barclays Capital Municipal Bond Index: 10 Year Component
 
Risk/Return:rr_RiskReturnAbstract 
1 Yearrr_AverageAnnualReturnYear014.04%
5 Yearsrr_AverageAnnualReturnYear054.85%
10 Yearsrr_AverageAnnualReturnYear105.15%
Franklin California Tax-Exempt Money Fund
 
Risk/Return:rr_RiskReturnAbstract 
Objective [Heading]rr_ObjectiveHeadingInvestment Goal
Objective, Primary [Text Block]rr_ObjectivePrimaryTextBlockTo provide investors with as high a level of income exempt from federal income taxes and California personal income taxes as is consistent with prudent investment management, the preservation of shareholders' capital and liquidity in its investments. The Fund also tries to maintain a stable $1 share price.
Expense [Heading]rr_ExpenseHeadingFees and Expenses of the Fund
Expense Narrative [Text Block]rr_ExpenseNarrativeTextBlockThese tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund.
Shareholder Fees Caption [Text]rr_ShareholderFeesCaptionSHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Text]rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES

(expenses that you pay each year as a percentage of the value of your investment)

Expense Example [Heading]rr_ExpenseExampleHeadingExample
Expense Example Narrative [Text Block]rr_ExpenseExampleNarrativeTextBlockThis Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading]rr_StrategyHeadingPrincipal Investment Strategies
Strategy Narrative [Text Block]rr_StrategyNarrativeTextBlock

Under normal market conditions, the Fund invests at least 80% of its total assets in securities that pay interest free from federal income taxes, including the federal alternative minimum tax, and from California personal income taxes. The Fund may also invest up to 35% of its assets in municipal securities issued by U.S. territories. Although the Fund tries to invest all of its total assets in tax-free securities, it is possible, although not anticipated, that up to 20% of the Fund's assets may be in securities that pay taxable interest, including interest that may be subject to the federal alternative minimum tax. The Fund invests predominantly in high-quality, short-term, municipal securities. Many of the Fund's portfolio securities may be supported by liquidity guarantees or credit enhancements, which may be provided by banks and other financial institutions.

Portfolio maturity and quality The Fund only buys securities that the investment manager determines present minimal credit risks. The Fund maintains a dollar-weighted average portfolio maturity of 60 days or less and maintains a dollar-weighted average life for its portfolio of 120 days or less, and only buys securities that:

mature in 397 calendar days or less, if such security is rated in the highest rating category by the requisite rating agencies, as described in applicable regulation; or

mature in 45 calendar days or less, if such security is rated in the second highest rating category by the requisite rating agencies, as described in applicable regulation.

A large portion or all of the Fund's portfolio securities may be invested in variable and floating rate securities the interest rates of which change either at specific intervals or whenever a benchmark rate changes. While this feature helps protect against a decline in the security's market price when interest rates rise, it lowers the Fund's income when interest rates fall.

Although the investment manager will search for investments across a large number of municipal securities that finance different types of projects, from time to time, based on economic conditions, the Fund may have significant positions in municipal securities that finance similar types of projects.

Strategy Portfolio Concentration [Text]rr_StrategyPortfolioConcentrationUnder normal market conditions, the Fund invests at least 80% of its total assets in securities that pay interest free from federal income taxes, including the federal alternative minimum tax, and from California personal income taxes.
Risk [Heading]rr_RiskHeadingPrincipal Risks
Risk Narrative [Text Block]rr_RiskNarrativeTextBlock

Mutual fund shares are not deposits or obligations of, or guaranteed or endorsed by, any bank, and are not insured or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other agency of the U.S. government. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the Fund.

Interest Rate

When interest rates rise, security prices fall. The opposite is also true: security prices rise when interest rates fall. In general, securities with longer maturities are more sensitive to these price changes. The Fund’s yield will vary. A sharp and unexpected rise in interest rates could cause the Fund’s share price to drop below a dollar. A low interest rate environment may prevent the Fund from providing a positive yield or paying Fund expenses out of current income and could impair the Fund’s ability to maintain a stable net asset value.

Credit

An issuer of securities may be unable to make interest payments and repay principal. Failure of an issuer to make timely interest or principal payments, or a decline or perception of a decline in the credit quality of a security, can cause the security’s price to fall, potentially lowering the Fund’s share price. Although the Fund invests predominantly in high-quality debt securities, any of the Fund’s holdings could have its credit rating downgraded or could default. The credit quality of the securities held by the Fund can change rapidly in certain market environments, and the default of a single holding could have the potential to cause significant deterioration of the Fund’s net asset value.

A change in the credit rating of any one or more of the municipal bond insurers that insure securities in the Fund’s portfolio may affect the value of the securities they insure, the Fund’s share price and Fund performance. The Fund might also be adversely impacted by the inability of an insurer to meet its insurance obligations.

Banking Industry

Because the Fund will invest in obligations for which banks and other financial institutions may provide liquidity guarantees or credit enhancements, it may be vulnerable to setbacks in that industry. Banks and other financial institutions are highly dependent on short-term interest rates and can be adversely affected by downturns in the U.S. and foreign economies or changes in banking regulations.

California and U.S. Territories

Because the Fund invests predominantly in California municipal securities, events in California are likely to affect the Fund's investments and its performance. These events may include economic or political policy changes, tax base erosion, state constitutional limits on tax increases, budget deficits and other financial difficulties, and changes in the credit ratings assigned to municipal issuers of California. As with California municipal securities, events in any of the territories where the Fund is invested may affect the Fund's investments and its performance.

Tax-Exempt Securities

While the Fund endeavors to purchase only bona fide tax-exempt securities, there are risks that: (a) a security issued as tax-exempt may be reclassified as taxable by the Internal Revenue Service or a state tax authority, and/or (b) future legislative, administrative or court actions could adversely impact the qualification of income from a tax-exempt security as tax-free. Such reclassifications or actions could cause interest from a security to become taxable, possibly retroactively, subjecting you to increased tax liability.

Income

Since the Fund can only distribute what it earns, the Fund’s distributions to shareholders may decline when interest rates fall. Because the Fund limits its investments to high-quality, short-term securities, its portfolio generally will earn lower yields than a portfolio with lower-quality, longer-term securities subject to more risk.

Liquidity

This is the risk that the Fund may make investments that may become less liquid in response to market developments or adverse investor perception. While the Fund endeavors to maintain a high level of liquidity in its portfolio, the liquidity of portfolio securities can deteriorate rapidly due to credit events affecting issuers or guarantors or due to general market conditions and a lack of willing buyers. When there is no willing buyer and investments cannot be readily sold at the desired time or price, the Fund may have to accept a lower price or may not be able to sell the instrument at all. An inability to sell one or more portfolio positions can adversely affect the Fund’s ability to maintain a $1.00 share price or prevent the Fund from being able to take advantage of other investment opportunities.

Liquidity risk may also refer to the risk that the Fund will not be able to pay redemption proceeds within a short period of time because of unusual market conditions, an unusually high volume of redemption requests or other reasons. If the Fund is forced to sell securities at an unfavorable time and/or under unfavorable conditions, such sales may adversely affect the Fund’s ability to maintain a $1.00 share price.

Market

The market value of securities owned by the Fund will go up and down, sometimes rapidly or unpredictably. A security’s market value may be reduced by market activity or other results of supply and demand unrelated to the issuer. This is a basic risk associated with all securities. When there are more sellers than buyers, prices tend to fall. Likewise, when there are more buyers than sellers, prices tend to rise.

Focus

The Fund may invest more than 25% of its assets in municipal securities that finance similar types of projects, such as hospitals, higher education, housing, industrial development, and transportation or pollution control. A change that affects one project, such as proposed legislation on the financing of the project, a shortage of the materials needed for the project, or a declining need for the project, would likely affect all similar projects, thereby increasing market risk.

U.S. Government Securities

Not all obligations of the U.S. Government, its agencies and instrumentalities are backed by the full faith and credit of the United States. Some obligations are backed only by the credit of the issuing agency or instrumentality, and in some cases there may be some risk of default by the issuer. Any guarantee by the U.S. Government or its agencies or instrumentalities of a security held by the Fund does not apply to the market value of such security or to shares of the Fund itself. A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity.

Risk Associated with the Fund Holding Cash

Although the Fund seeks to be fully invested, it may at times hold some of its assets in cash, which may hurt the Fund's performance.

Risk Money Market Fund [Text]rr_RiskMoneyMarketFundAlthough the Fund seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the Fund
Bar Chart and Performance Table [Heading]rr_BarChartAndPerformanceTableHeadingPerformance
Performance Narrative [Text Block]rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for shares of the Fund. The table shows the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable. The Fund's past performance is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information at franklintempleton.com or by calling (800) DIAL BEN/342-5236.

Performance Information Illustrates Variability of Returns [Text]rr_PerformanceInformationIllustratesVariabilityOfReturnsThe following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for shares of the Fund. The table shows the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable
Performance Availability Phone [Text]rr_PerformanceAvailabilityPhone(800) DIAL BEN/342-5236
Performance Availability Website Address [Text]rr_PerformanceAvailabilityWebSiteAddressfranklintempleton.com
Performance Past Does Not Indicate Future [Text]rr_PerformancePastDoesNotIndicateFutureThe Fund's past performance is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading]rr_BarChartHeadingANNUAL TOTAL RETURNS
Bar Chart Closing [Text Block]rr_BarChartClosingTextBlock
Best Quarter:Q3'070.78%
Worst Quarter:Q4'100.00%
As of September 30, 2011, the Fund's year-to-date return was 0.00%.
Performance Table Headingrr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS

For the periods ended December 31, 2010

Performance Table Closing [Text Block]rr_PerformanceTableClosingTextBlock

To obtain the Fund’s current yield information, please call (800) DIAL BEN/342-5236.

Franklin California Tax-Exempt Money Fund | Class A
 
Risk/Return:rr_RiskReturnAbstract 
Maximum Cumulative Sales Charge (as a percentage of Offering Price)rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Management Fees (as a percentage of Assets)rr_ManagementFeesOverAssets0.49%
Other Expenses (as a percentage of Assets):rr_OtherExpensesOverAssets0.05%
Expenses (as a percentage of Assets)rr_ExpensesOverAssets0.54%
Expense Example, with Redemption, 1 Yearrr_ExpenseExampleYear0155
Expense Example, with Redemption, 3 Yearsrr_ExpenseExampleYear03173
Expense Example, with Redemption, 5 Yearsrr_ExpenseExampleYear05302
Expense Example, with Redemption, 10 Yearsrr_ExpenseExampleYear10 677
Annual Return 2001rr_AnnualReturn20011.92%
Annual Return 2002rr_AnnualReturn20020.88%
Annual Return 2003rr_AnnualReturn20030.47%
Annual Return 2004rr_AnnualReturn20040.64%
Annual Return 2005rr_AnnualReturn20051.78%
Annual Return 2006rr_AnnualReturn20062.78%
Annual Return 2007rr_AnnualReturn20073.02%
Annual Return 2008rr_AnnualReturn20081.49%
Annual Return 2009rr_AnnualReturn20090.01%
Annual Return 2010rr_AnnualReturn20100.00%
Year to Date Return, Labelrr_YearToDateReturnLabelAs of September 30, 2011, the Fund's year-to-date return was 0.00%.
Highest Quarterly Return, Labelrr_HighestQuarterlyReturnLabelBest Quarter:
Highest Quarterly Return, Daterr_BarChartHighestQuarterlyReturnDateSep. 30, 2007
Highest Quarterly Returnrr_BarChartHighestQuarterlyReturn0.78%
Lowest Quarterly Return, Labelrr_LowestQuarterlyReturnLabelWorst Quarter:
Lowest Quarterly Return, Daterr_BarChartLowestQuarterlyReturnDateDec. 31, 2010
Lowest Quarterly Returnrr_BarChartLowestQuarterlyReturn0.00%
Labelrr_AverageAnnualReturnLabel Franklin California Tax-Exempt Money Fund
1 Yearrr_AverageAnnualReturnYear01 none
5 Yearsrr_AverageAnnualReturnYear051.45%
10 Yearsrr_AverageAnnualReturnYear101.29%
[1]New or additional investments into Class B are no longer permitted.
[2]Since inception July 1, 2003.