Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	FRANKLIN GOLD & PRECIOUS METALS FUND
Franklin Gold and Precious Metals Fund-20 | Franklin Gold and Precious Metals Fund
Risk/Return:	rr_RiskReturnAbstract
Objective [Heading]	rr_ObjectiveHeading	Investment Goal
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Capital appreciation. The Fund's secondary goal is to provide shareholders with current income through dividends or interest received from its investments.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	These 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 $50,000 in Franklin Templeton funds. More information about these and other discounts is available from your financial professional and under “Your Account” on page 29 in the Fund's Prospectus and under “Buying and Selling Shares” on page 44 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A - "Intermediary Sales Charge Discounts and Waivers" to the Fund's prospectus. Please note that the tables and examples below do not reflect any transaction fees that may be charged by financial intermediaries, or commissions that a shareholder may be required to pay directly to its financial intermediary when buying or selling Class R6 or Advisor Class shares.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder 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_PortfolioTurnoverHeading	Portfolio 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 17.00% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	17.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	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 $50,000 in Franklin Templeton funds.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, No Redemption, By Year, Caption [Text]	rr_ExpenseExampleNoRedemptionByYearCaption	If you do not sell your shares:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal market conditions, the Fund invests at least 80% of its net assets in securities of gold and precious metals operation companies. Gold and precious metals operation companies include companies that mine, process, or deal in gold or other precious metals, such as silver, platinum, and palladium, including mining finance and exploration companies as well as operating companies with long- or medium-life mines. Several metals, including non-precious metals such as copper, zinc or nickel, often can be found in the earth together and as a result, precious metals may not be the primary business of the company. For purposes of the Fund’s 80% policy, such companies may be considered to be gold and precious metals operation companies as long as the investment manager determines, in its sole discretion, that the company provides attractive exposure to precious metals. The Fund is a "non-diversified" fund, which means it generally invests a greater portion of its assets in the securities of one or more issuers and may invest overall in a smaller number of issuers than a diversified fund. The Fund may buy securities of gold and precious metals operation companies located anywhere in the world and in general invests predominantly in non-U.S. companies. Currently a substantial portion of the companies in which the Fund invests are domiciled in Canada, although the mining operations of such companies often take place in other countries. The Fund may invest in companies without regard to market capitalization, and may heavily invest in small- and mid-capitalization companies. The Fund primarily invests in equity securities, primarily common stock. The Fund also invests in American, Global and European Depositary Receipts. The Fund’s investment manager looks for companies with low cost reserves and experienced management teams with established track records, particularly focusing on companies with long life production profiles, expandable resource bases, and active exploration programs that can potentially drive future reserve and production growth.
Strategy Portfolio Concentration [Text]	rr_StrategyPortfolioConcentration	Under normal market conditions, the Fund invests at least 80% of its net assets in securities of gold and precious metals operation companies.
Risk [Heading]	rr_RiskHeading	Principal 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. Gold and Precious Metals The prices of gold and precious metals operation companies are affected by the price of gold or other precious metals such as platinum, palladium and silver, as well as other prevailing market conditions. These prices may be volatile, fluctuating substantially over short periods of time. Depending on market conditions, gold and precious metals operation companies may dramatically outperform or underperform more traditional equity investments. In times of stable economic growth, traditional equity and debt investments could offer greater appreciation potential and the prices of gold and other precious metals may be adversely affected. The prices of gold and other precious metals are affected by such factors as: (1) how much of the worldwide supply is held by large holders, such as governmental bodies and central banks; (2) unpredictable monetary policies and economic and political conditions in countries throughout the world; (3) supply and demand for gold bullion as an investment, including bars, coins or gold-backed financial instruments such as exchange-traded funds; (4) demand for gold jewelry; and (5) government policies meant to influence demand for gold and other precious metals. The prices of gold and precious metals operation companies are directly affected by: (1) declines in the prices of gold and precious metals; (2) rising capital costs as well as labor and other costs in mining and production; (3) adverse currency fluctuations, economic events or natural disasters or other events with a significant economic effect in the countries where these companies operate; (4) labor disruptions; (5) operational issues and failures; (6) access to reliable energy and equipment supplies; and (7) changes in laws relating to mining, production, or sales. These factors may result in deviations between the prices of the underlying metals and the securities of the operation companies in which the Fund invests. In addition, some gold and precious metals mining companies have hedged, to varying degrees, their exposure to falls in the prices of gold or precious metals by selling forward future production, which could limit the company’s benefit from future rises in the prices of gold or precious metals or increase the risk that the company could fail to meet its contractual obligations. With respect to mining companies, mining operations have varying expected life spans and companies that have mines with a short expected life span may experience more stock price volatility. Changes in U.S. or foreign tax, currency or mining laws may make it more expensive and/or more difficult to pursue the Fund's investment strategies. Market The market values of securities or other investments owned by the Fund will go up or down, sometimes rapidly or unpredictably. The market value of a security or other investment 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 investments. When there are more sellers than buyers, prices tend to fall. Likewise, when there are more buyers than sellers, prices tend to rise. Stock prices tend to go up and down more dramatically than those of debt securities. A slower-growth or recessionary economic environment could have an adverse effect on the prices of the various stocks held by the Fund. Foreign Securities (non-U.S.) Investing in foreign securities typically involves more risks than investing in U.S. securities, and includes risks associated with: (i) internal and external political and economic developments – e.g., the political, economic and social policies and structures of some foreign countries may be less stable and more volatile than those in the U.S. or some foreign countries may be subject to trading restrictions or economic sanctions; (ii) trading practices – e.g., government supervision and regulation of foreign securities and currency markets, trading systems and brokers may be less than in the U.S.; (iii) availability of information – e.g., foreign issuers may not be subject to the same disclosure, accounting and financial reporting standards and practices as U.S. issuers; (iv) limited markets – e.g., the securities of certain foreign issuers may be less liquid (harder to sell) and more volatile; and (v) currency exchange rate fluctuations and policies. The risks of foreign investments may be greater in developing or emerging market countries. Regional Adverse conditions in a certain region or country can adversely affect securities of issuers in other countries whose economies appear to be unrelated. To the extent that the Fund invests a significant portion of its assets in a specific geographic region or a particular country, the Fund will generally have more exposure to the specific regional or country economic risks. In the event of economic or political turmoil or a deterioration of diplomatic relations in a region or country where a substantial portion of the Fund's assets are invested, the Fund may experience substantial illiquidity or reduction in the value of the Fund's investments. Emerging Market Countries The Fund’s investments in emerging market countries are subject to all of the risks of foreign investing generally, and have additional heightened risks due to a lack of established legal, political, business and social frameworks to support securities markets, including: delays in settling portfolio securities transactions; currency and capital controls; greater sensitivity to interest rate changes; pervasiveness of corruption and crime; currency exchange rate volatility; and inflation, deflation or currency devaluation. Frontier Market Countries Frontier market countries generally have smaller economies and even less developed capital markets than traditional developing markets, and, as a result, the risks of investing in developing market countries are magnified in frontier market countries. The magnification of risks are the result of: potential for extreme price volatility and illiquidity in frontier markets; government ownership or control of parts of private sector and of certain companies; trade barriers, exchange controls, managed adjustments in relative currency values and other protectionist measures imposed or negotiated by frontier market countries or their trading partners; and the relatively new and unsettled securities laws in many frontier market countries. Small and Mid Capitalization Companies Securities issued by small and mid capitalization companies may be more volatile in price than those of larger companies and may involve additional risks. Such risks may include greater sensitivity to economic conditions, less certain growth prospects, lack of depth of management and funds for growth and development, and limited or less developed product lines and markets. In addition, small and mid capitalization companies may be particularly affected by interest rate increases, as they may find it more difficult to borrow money to continue or expand operations, or may have difficulty in repaying any loans. Income Because the Fund can only distribute what it earns, the Fund's distributions to shareholders may decline when dividend income from investments in stocks decline, or when the Fund does not have PFIC gains to be distributed. The Fund's income generally declines during periods of falling gold and precious metals prices. Concentration By focusing on an industry or a group of industries, the Fund carries much greater risks of adverse developments and price movements in such industries than a fund that invests in a wider variety of industries. Because the Fund concentrates in a specific industry or group of industries, there is also the risk that the Fund will perform poorly during a slump in demand for securities of companies in such industries. Non-Diversification Because the Fund is non-diversified, it may be more sensitive to economic, business, political or other changes affecting individual issuers or investments than a diversified fund, which may negatively impact the Fund's performance and result in greater fluctuation in the value of the Fund’s shares. 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.
Risk Nondiversified Status [Text]	rr_RiskNondiversifiedStatus	Because the Fund is non-diversified, it may be more sensitive to economic, business, political or other changes affecting individual issuers or investments than a diversified fund, which may negatively impact the Fund's performance and result in greater fluctuation in the value of the Fund’s shares
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance
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. The secondary index in the table below shows how the Fund's performance compares to a group of securities that reflects the broader equity markets universe. 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_PerformanceInformationIllustratesVariabilityOfReturns	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.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	(800) DIAL BEN/342-5236
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	franklintempleton.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The 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_BarChartHeading	Class A Annual Total Returns
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	Sales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns(figures reflect sales charges) For the periods ended December 31, 2019
Performance Table Closing [Text Block]	rr_PerformanceTableClosingTextBlock	No one index is representative of the Fund's portfolio. The figures in the average annual total returns table above reflect the Class A maximum front-end sales charge of 5.50%. Prior to September 10, 2018, Class A shares were subject to a maximum front-end sales charge of 5.75%. If the prior maximum front-end sales charge of 5.75% was reflected, performance for Class A in the average annual total returns table would be lower. 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 not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for Class A and after-tax returns for other classes will vary.
Franklin Gold and Precious Metals Fund-20 | Franklin Gold and Precious Metals Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)	rr_MaximumCumulativeSalesChargeOverOfferingPrice	5.50%
Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)	rr_MaximumDeferredSalesChargeOverOfferingPrice	none	[1]
Management fees	rr_ManagementFeesOverAssets	0.48%
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.20%
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.93%
Fee waiver and/or expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[2]
Total annual Fund operating expenses after fee waiver and/or expense reimbursement	rr_NetExpensesOverAssets	0.93%	[2]
1 year	rr_ExpenseExampleYear01	$ 640
3 years	rr_ExpenseExampleYear03	830
5 years	rr_ExpenseExampleYear05	1,036
10 years	rr_ExpenseExampleYear10	$ 1,630
2010	rr_AnnualReturn2010	49.21%
2011	rr_AnnualReturn2011	(24.84%)
2012	rr_AnnualReturn2012	(14.78%)
2013	rr_AnnualReturn2013	(48.03%)
2014	rr_AnnualReturn2014	(10.16%)
2015	rr_AnnualReturn2015	(22.41%)
2016	rr_AnnualReturn2016	55.61%
2017	rr_AnnualReturn2017	(0.12%)
2018	rr_AnnualReturn2018	(18.11%)
2019	rr_AnnualReturn2019	51.48%
Year to Date Return, Label	rr_YearToDateReturnLabel	As of September 30, 2020, the Fund's year-to-date return was 36.66%.
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Mar. 31, 2016
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	45.50%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Jun. 30, 2013
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(38.15%)
Franklin Gold and Precious Metals Fund-20 | Franklin Gold and Precious Metals Fund | Class C
Risk/Return:	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)	rr_MaximumCumulativeSalesChargeOverOfferingPrice	none
Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)	rr_MaximumDeferredSalesChargeOverOfferingPrice	1.00%
Management fees	rr_ManagementFeesOverAssets	0.48%
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.20%
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.68%
Fee waiver and/or expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[2]
Total annual Fund operating expenses after fee waiver and/or expense reimbursement	rr_NetExpensesOverAssets	1.68%	[2]
1 year	rr_ExpenseExampleYear01	$ 271
3 years	rr_ExpenseExampleYear03	530
5 years	rr_ExpenseExampleYear05	913
10 years	rr_ExpenseExampleYear10	1,987
1 Year	rr_ExpenseExampleNoRedemptionYear01	171
3 Years	rr_ExpenseExampleNoRedemptionYear03	530
5 Years	rr_ExpenseExampleNoRedemptionYear05	913
10 Years	rr_ExpenseExampleNoRedemptionYear10	$ 1,987
Franklin Gold and Precious Metals Fund-20 | Franklin Gold and Precious Metals Fund | Class R6
Risk/Return:	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)	rr_MaximumCumulativeSalesChargeOverOfferingPrice	none
Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)	rr_MaximumDeferredSalesChargeOverOfferingPrice	none
Management fees	rr_ManagementFeesOverAssets	0.48%
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.24%
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.72%
Fee waiver and/or expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.16%)	[2]
Total annual Fund operating expenses after fee waiver and/or expense reimbursement	rr_NetExpensesOverAssets	0.56%	[2]
1 year	rr_ExpenseExampleYear01	$ 57
3 years	rr_ExpenseExampleYear03	214
5 years	rr_ExpenseExampleYear05	385
10 years	rr_ExpenseExampleYear10	$ 879
Franklin Gold and Precious Metals Fund-20 | Franklin Gold and Precious Metals Fund | Advisor Class
Risk/Return:	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)	rr_MaximumCumulativeSalesChargeOverOfferingPrice	none
Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)	rr_MaximumDeferredSalesChargeOverOfferingPrice	none
Management fees	rr_ManagementFeesOverAssets	0.48%
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.20%
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.68%
Fee waiver and/or expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[2]
Total annual Fund operating expenses after fee waiver and/or expense reimbursement	rr_NetExpensesOverAssets	0.68%	[2]
1 year	rr_ExpenseExampleYear01	$ 69
3 years	rr_ExpenseExampleYear03	218
5 years	rr_ExpenseExampleYear05	379
10 years	rr_ExpenseExampleYear10	$ 847
Franklin Gold and Precious Metals Fund-20 | Franklin Gold and Precious Metals Fund | Return Before Taxes | Class A
Risk/Return:	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Return Before Taxes
Past 1 year	rr_AverageAnnualReturnYear01	43.12%
Past 5 years	rr_AverageAnnualReturnYear05	7.16%
Past 10 years	rr_AverageAnnualReturnYear10	(4.50%)
Franklin Gold and Precious Metals Fund-20 | Franklin Gold and Precious Metals Fund | Return Before Taxes | Class C
Risk/Return:	rr_RiskReturnAbstract
Past 1 year	rr_AverageAnnualReturnYear01	49.42%
Past 5 years	rr_AverageAnnualReturnYear05	7.58%
Past 10 years	rr_AverageAnnualReturnYear10	(4.67%)
Franklin Gold and Precious Metals Fund-20 | Franklin Gold and Precious Metals Fund | Return Before Taxes | Class R6
Risk/Return:	rr_RiskReturnAbstract
Past 1 year	rr_AverageAnnualReturnYear01	52.07%
Past 5 years	rr_AverageAnnualReturnYear05	8.90%
Since Inception	rr_AverageAnnualReturnSinceInception	1.41%	[3]
Franklin Gold and Precious Metals Fund-20 | Franklin Gold and Precious Metals Fund | Return Before Taxes | Advisor Class
Risk/Return:	rr_RiskReturnAbstract
Past 1 year	rr_AverageAnnualReturnYear01	51.87%
Past 5 years	rr_AverageAnnualReturnYear05	8.65%
Past 10 years	rr_AverageAnnualReturnYear10	(3.72%)
Franklin Gold and Precious Metals Fund-20 | Franklin Gold and Precious Metals Fund | After Taxes on Distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Return After Taxes on Distributions
Past 1 year	rr_AverageAnnualReturnYear01	43.12%
Past 5 years	rr_AverageAnnualReturnYear05	6.39%
Past 10 years	rr_AverageAnnualReturnYear10	(5.40%)
Franklin Gold and Precious Metals Fund-20 | Franklin Gold and Precious Metals Fund | After Taxes on Distributions and Sales | Class A
Risk/Return:	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Return After Taxes on Distributions and Sale of Fund Shares
Past 1 year	rr_AverageAnnualReturnYear01	25.53%
Past 5 years	rr_AverageAnnualReturnYear05	5.22%
Past 10 years	rr_AverageAnnualReturnYear10	(3.15%)
Franklin Gold and Precious Metals Fund-20 | Franklin Gold and Precious Metals Fund | FTSE Gold Mines Index (index reflects no deduction for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
Past 1 year	rr_AverageAnnualReturnYear01	42.68%
Past 5 years	rr_AverageAnnualReturnYear05	12.58%
Past 10 years	rr_AverageAnnualReturnYear10	(3.46%)
Franklin Gold and Precious Metals Fund-20 | Franklin Gold and Precious Metals Fund | S&P 500 Index (index reflects no deduction for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
Past 1 year	rr_AverageAnnualReturnYear01	31.49%
Past 5 years	rr_AverageAnnualReturnYear05	11.70%
Past 10 years	rr_AverageAnnualReturnYear10	13.56%

[1] 1. There is a 1% contingent deferred sales charge that applies to investments of $1 million or more (see "Investments of $1 Million or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.

[2] 1. The transfer agent has contractually agreed to cap transfer agency fees for Class R6 shares of the Fund so that transfer agency fees for the class do not exceed 0.03% until November 30, 2021. During its term, this fee waiver and expense reimbursement agreement may not be terminated or amended without approval of the board of trustees except to reflect the extension of termination dates or to lower the fee waiver and expense limitation.

[3] 1. Since inception May 1, 2013.