v3.25.2
Label Element Value
Franklin Exponential Data ETF  
Risk/Return: oef_RiskReturnAbstract  
Risk/Return [Heading] oef_RiskReturnHeading Franklin Exponential Data ETF
Objective [Heading] oef_ObjectiveHeading Investment Goal
Objective, Primary [Text Block] oef_ObjectivePrimaryTextBlock

Capital appreciation.

Expense Heading [Optional Text] oef_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] oef_ExpenseNarrativeTextBlock

The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. You may also incur other fees, such as usual and customary brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and the Example that follows.

Operating Expenses Caption [Optional Text] oef_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading] oef_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] oef_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 27.91% of the average value of its portfolio.

Portfolio Turnover, Rate oef_PortfolioTurnoverRate 27.91%
Expense Example [Heading] oef_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] oef_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell 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] oef_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] oef_StrategyNarrativeTextBlock

Under normal market conditions, the Fund invests at least 80% of its net assets in equity securities of companies that are relevant to the Fund's investment theme of exponential data. The Fund invests predominantly in common stock.

Companies relevant to the Fund’s investment theme of exponential data are those that the investment manager believes are substantially focused on and/or are expected to substantially benefit from the use of large data sets and/or the growth of data, including systems, services, hardware, software and other digital and physical infrastructure related to data creation, amplification, collection, cleaning, recording, analysis, processing, transmission, delivery, storage, encryption and security. These companies may include companies benefitting from or facilitating the application or development of cloud computing technologies and services, data supporting infrastructure and data analytics solutions, including companies providing hardware and software technologies supporting data applications as well as those utilizing data analysis systems to provide or improve goods and services (e.g., software-as-a-service and personalized advertising and health care services). These companies may also include companies the investment manager believes represent new and innovative use cases for data, such as those benefitting from or facilitating artificial intelligence, machine learning, and augmented and virtual reality.

The Fund also may invest in real estate investment trusts (REITs).

In pursuing the Fund’s investment theme, the investment manager may invest in companies in any economic sector or of any market capitalization and may invest in companies both inside and outside of the United States, including those in developing or emerging markets. Although the Fund may invest across economic sectors, the Fund concentrates its investments in information technology related industries. The Fund is a “non-diversified” fund, which means it generally invests a greater proportion of its assets in the securities of one or more issuers and invests overall in a smaller number of issuers than a diversified fund.

In selecting companies that the investment manager believes are relevant to the Fund’s investment theme of exponential data, the investment manager seeks to identify, using its own fundamental, “bottom-up” research and analysis, companies positioned to capitalize on innovations in or that are enabling the further development of the exponential data theme in the markets in which they operate. The investment manager’s internal research and analysis leverages insights from

diverse sources, including external research, to develop and refine its investment theme and identify and take advantage of trends that have ramifications for individual companies or entire industries. In analyzing investment opportunities for the Fund, the investment manager also evaluates market segments, products, services and business models positioned to benefit significantly from innovations in data products or services or the commercialization of data relative to the broad equities market, and seeks to identify the primary beneficiaries of new trends or developments in exponential data to select investments for the Fund. The Fund’s thematic investment process is designed to construct a portfolio of companies the investment manager believes are substantially focused on and/or are expected to substantially benefit from the exponential data theme based on a determination that exposure to the theme is driving or, in the investment manager’s opinion, will in the future drive an issuer’s growth or competitive positioning, including companies that either currently monetize data or have the potential in the future to monetize data.

The investment manager may seek to sell a security if: (i) the security reaches its valuation target; (ii) the security reaches its position size limit in the Fund’s portfolio; (iii) the security’s fundamentals deteriorate; (iv) there are adverse policy changes that could affect the security’s outlook; or (v) better investment opportunities become available.

Strategy Portfolio Concentration [Text] oef_StrategyPortfolioConcentration Under normal market conditions, the Fund invests at least 80% of its net assets in equity securities of companies that are relevant to the Fund's investment theme of exponential data.
Bar Chart and Performance Table [Heading] oef_BarChartAndPerformanceTableHeading Performance
Performance Narrative [Text Block] oef_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. 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 www.franklintempleton.com or by calling (800) DIAL BEN/342-5236.

Performance Information Illustrates Variability of Returns [Text] oef_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. 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] oef_PerformanceAvailabilityPhone (800) DIAL BEN/342-5236
Performance Availability Website Address [Text] oef_PerformanceAvailabilityWebSiteAddress franklintempleton.com
Performance Past Does Not Indicate Future [Text] oef_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] oef_BarChartHeading Annual Total Returns
Bar Chart Closing [Text Block] oef_BarChartClosingTextBlock
   

Best Quarter:

2023, Q4

21.44%

Worst Quarter:

2022, Q2

-28.05%

 

As of June 30, 2025, the Fund’s year-to-date return was 7.52%.

Performance Table Heading oef_PerformanceTableHeading Average Annual Total Returns For periods ended December 31, 2024
Index No Deduction for Fees, Expenses, or Taxes [Text] oef_IndexNoDeductionForFeesExpensesTaxes (index reflects no deduction for fees, expenses or taxes)
Franklin Exponential Data ETF | Principal Risks  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Principal Risks

You could lose money by investing in the Fund. ETF 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. The Fund is subject to the principal risks noted below, any of which may adversely affect the Fund’s net asset value (NAV), trading price, yield, total return and ability to meet its investment goal. Unlike many ETFs, the Fund is not an index-based ETF.

Franklin Exponential Data ETF | Risk Lose Money [Member]  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock You could lose money by investing in the Fund.
Franklin Exponential Data ETF | Thematic Investing  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Thematic Investing: The Fund’s investment strategies incorporate the identification of thematic investment opportunities and its performance may be negatively impacted if the investment manager does not correctly identify such opportunities or if the theme develops in an unexpected manner. Performance may also be negatively impacted if the securities selected for the Fund’s portfolios do not benefit from the development of the Fund’s investment theme. Securities selected pursuant to the Fund’s investment theme may be impacted by factors unrelated to the theme, particularly with respect to companies that may have multiple lines of business, and may underperform. Adverse developments and risks unrelated to the Fund’s investment theme affecting companies in which the Fund invests may negatively impact the Fund’s performance.

The Fund’s thematic investments will also subject the Fund to growth style investing risks. Growth stock prices reflect projections of future earnings or

revenues, and can, therefore, fall dramatically if the company fails to meet those projections. Growth stocks may be more expensive relative to their current earnings or assets compared to value or other stocks, and if earnings growth expectations moderate, their valuations may return to more typical norms, causing their stock prices to fall. Prices of these companies’ securities may be more volatile than other securities, particularly over the short term.

Franklin Exponential Data ETF | Concentration  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Concentration: By focusing its investments in information technology related 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.

Franklin Exponential Data ETF | Information technology companies  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Information technology companies:  Companies operating within information technology related industries may be affected by worldwide technological developments, the success of their products and services (which may be outdated quickly), anticipated products or services that are delayed or cancelled, and investor perception of the company and/or its products or services. These companies typically face intense competition and potentially rapid product obsolescence. They may also have limited product lines, markets, financial resources or personnel. Technology companies are also heavily dependent on intellectual property rights and may be adversely affected by loss or impairment of those rights. There can be no assurance these companies will be able to successfully protect their intellectual property to prevent the misappropriation of their technology, or that competitors will not develop technology that is substantially similar or superior to such companies’ technology. These companies typically engage in significant amounts of spending on research and development, and there is no guarantee that the products or services produced by these companies will be successful. Technology companies are also potential targets for cyberattacks, which can have a materially adverse impact on the performance of these companies. Companies in the software industry may be adversely affected by, among other things, the decline or fluctuation of subscription renewal rates for their products and services and actual or perceived vulnerabilities in their products or services. In addition, companies operating within the technology sector may develop and/or utilize artificial intelligence. Artificial intelligence technology could face increasing regulatory scrutiny in the future, which may limit the development of this technology and impede the growth of companies that develop and/or utilize this technology. Similarly, the collection of data from consumers and other sources could face increased scrutiny as regulators consider how the data is collected, stored, safeguarded and used. The customers and/or suppliers of technology companies may be concentrated in a particular country, region or industry. Any

adverse event affecting one of these countries, regions or industries could have a negative impact on these companies.

Franklin Exponential Data ETF | Market  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

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. In addition, the value of the Fund’s investments may go up or down due to general market or other conditions that are not specifically related to a particular issuer, such as: real or perceived adverse economic changes, including widespread liquidity issues and defaults in one or more industries; changes in interest, inflation or exchange rates; unexpected natural and man-made world events, such as diseases or disasters; financial, political or social disruptions, including terrorism and war; and U.S. trade disputes or other disputes with specific countries that could result in additional tariffs, trade barriers and/or investment restrictions in certain securities in those countries. Any of these conditions can adversely affect the economic prospects of many companies, sectors, nations, regions and the market in general, in ways that cannot necessarily be foreseen.

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.

Franklin Exponential Data ETF | Focus  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Focus: To the extent that the Fund focuses on particular countries, regions, industries, sectors or types of investments from time to time, the Fund may be subject to greater risks of adverse developments in such areas of focus than a fund that invests in a wider variety of countries, regions, industries, sectors or investments.

Franklin Exponential Data ETF | Small and Mid Capitalization Companies  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

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 substantial 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. The markets for securities issued by small and mid capitalization companies also tend to be less liquid than the markets for securities issued by larger companies.

Franklin Exponential Data ETF | Foreign Securities (non-U.S.)  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Foreign Securities (non-U.S.): Investing in foreign securities typically involves different 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; diplomatic and political developments could affect the economies, industries, and securities and currency markets of the countries in which the Fund is invested, which can include rapid and adverse political changes; social instability; regional conflicts; sanctions imposed by the United States, other nations or other governmental entities, including supranational entities; terrorism; and war; (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 – e.g., fluctuations may negatively affect investments denominated in foreign currencies and any income received or expenses paid by the Fund in that foreign currency. The risks of foreign investments may be greater in developing or emerging market countries.

Franklin Exponential Data ETF | Developing Market Countries  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Developing Market Countries: The Fund’s investments in securities of issuers in developing 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.

Franklin Exponential Data ETF | Non-Diversification  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

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.

Franklin Exponential Data ETF | Management  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Management: The Fund is subject to management risk because it is an actively managed ETF. 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.

Franklin Exponential Data ETF | Cybersecurity  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Cybersecurity: Cybersecurity incidents, both intentional and unintentional, may allow an unauthorized party to gain access to Fund assets, Fund or customer data (including private shareholder information), or proprietary information, cause the Fund, the investment manager, authorized participants, or index providers (as applicable) and listing exchanges, and/or their service providers (including, but not limited to, Fund accountants, custodians, sub-custodians, transfer agents and

financial intermediaries) to suffer data breaches, data corruption or loss of operational functionality or prevent Fund investors from purchasing, redeeming shares or receiving distributions. The investment manager has limited ability to prevent or mitigate cybersecurity incidents affecting third party service providers, and such third party service providers may have limited indemnification obligations to the Fund or the investment manager. Cybersecurity incidents may result in financial losses to the Fund and its shareholders, and substantial costs may be incurred in an effort to prevent or mitigate future cybersecurity incidents. Issuers of securities in which the Fund invests are also subject to cybersecurity risks, and the value of these securities could decline if the issuers experience cybersecurity incidents.

Because technology is frequently changing, new ways to carry out cyber attacks are always developing. Therefore, there is a chance that some risks have not been identified or prepared for, or that an attack may not be detected, which puts limitations on the Fund's ability to plan for or respond to a cyber attack. Like other funds and business enterprises, the Fund, the investment manager, and their service providers are subject to the risk of cyber incidents occurring from time to time.

Franklin Exponential Data ETF | REITs  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

REITs: A REIT’s performance depends on the types, values and locations of the properties and companies it owns and how well those properties and companies are managed. A decline in rental income may occur because of extended vacancies, increased competition from other properties, tenants’ failure to pay rent or poor management. Because a REIT may be invested in a limited number of projects or in a particular market segment, it may be more susceptible to adverse developments affecting a single project or market segment than more broadly diversified investments. Loss of status as a qualified REIT under the U.S. federal tax laws could adversely affect the value of a particular REIT or the market for REITs as a whole. These risks may also apply to securities of REIT-like entities domiciled outside the U.S.

Franklin Exponential Data ETF | Market Trading  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Market Trading: The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares, losses from trading in secondary markets, periods of high volatility and disruption in the creation/redemption process of the Fund. Any of these factors, among others, may lead to the Fund’s shares trading at a premium or discount to NAV. Thus, you may pay more (or less) than NAV when you buy shares of the Fund in the secondary market, and you may receive less (or more) than NAV when you sell those shares in the secondary market. The investment manager cannot predict whether shares will trade above (premium), below (discount) or at NAV.

To the extent that the underlying securities held by the Fund trade on an exchange that is closed when the securities exchange on which the Fund shares list and trade is open, there may be market uncertainty about the stale security pricing (i.e.,

the last quote from its closed foreign market) resulting in premiums or discounts to NAV that may be greater than those experienced by other ETFs.

Franklin Exponential Data ETF | Authorized Participant Concentration  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Authorized Participant Concentration: Only an Authorized Participant may engage in creation or redemption transactions directly with the Fund. "Authorized Participants" are broker-dealers that are permitted to create and redeem shares directly with the Fund and who have entered into agreements with the Fund’s distributor. The Fund has a limited number of institutions that act as Authorized Participants. To the extent that these institutions exit the business or are unable to proceed with creation and/or redemption orders with respect to the Fund and no other Authorized Participant is able to step forward to create or redeem Creation Units (as defined below), Fund shares may trade at a discount to NAV and possibly face trading halts and/or delisting. This risk may be more pronounced in volatile markets, potentially where there are significant redemptions in ETFs generally.

Franklin Exponential Data ETF | Small Fund  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Small Fund: When the Fund's size is small, the Fund may experience low trading volume and wide bid-ask spreads. In addition, the Fund may face the risk of being delisted if the Fund does not meet certain conditions of the listing exchange.

Franklin Exponential Data ETF | Large Shareholder  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Large Shareholder: Certain large shareholders, including other funds or accounts advised by the investment manager or an affiliate of the investment manager, may from time to time own a substantial amount of the Fund’s shares. In addition, a third-party investor, the investment manager or an affiliate of the investment manager, an authorized participant, a lead market maker, or another entity may invest in the Fund and hold its investment for a limited period of time solely to facilitate commencement of the Fund or to facilitate the Fund’s achieving a specified size or scale. There can be no assurance that any large shareholder would not redeem its investment, that the size of the Fund would be maintained at such levels or that the Fund would continue to meet applicable listing requirements. Redemptions by large shareholders could have a significant negative impact on the Fund. In addition, transactions by large shareholders may account for a large percentage of the trading volume on the listing exchange and may, therefore, have a material upward or downward effect on the market price of the shares.

Franklin Exponential Data ETF | Russell 3000® Index  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel Russell 3000® Index
Average Annual Return, Percent oef_AvgAnnlRtrPct 23.81%
Average Annual Return, Percent oef_AvgAnnlRtrPct 11.71% [1]
Performance Inception Date oef_PerfInceptionDate Jan. 12, 2021
Franklin Exponential Data ETF | Franklin Exponential Data ETF  
Risk/Return: oef_RiskReturnAbstract  
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.50%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.00%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.50%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 51
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 160
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 280
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 628
Year to Date Return, Label [Optional Text] oef_YearToDateReturnLabel As of June 30, 2025, the Fund’s year-to-date return was 7.52%.
Bar Chart, Year to Date Return, Date oef_BarChartYearToDateReturnDate Jun. 30, 2025
Bar Chart, Year to Date Return oef_BarChartYearToDateReturn 7.52%
Highest Quarterly Return, Label [Optional Text] oef_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date oef_BarChartHighestQuarterlyReturnDate Dec. 31, 2023
Highest Quarterly Return oef_BarChartHighestQuarterlyReturn 21.44%
Lowest Quarterly Return, Label [Optional Text] oef_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date oef_BarChartLowestQuarterlyReturnDate Jun. 30, 2022
Lowest Quarterly Return oef_BarChartLowestQuarterlyReturn (28.05%)
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel Return before taxes
Average Annual Return, Percent oef_AvgAnnlRtrPct 16.60%
Average Annual Return, Percent oef_AvgAnnlRtrPct 0.43% [1]
Annual Return [Percent] oef_AnnlRtrPct (45.66%)
Annual Return [Percent] oef_AnnlRtrPct 45.79%
Annual Return [Percent] oef_AnnlRtrPct 16.60%
Performance Inception Date oef_PerfInceptionDate Jan. 12, 2021
Franklin Exponential Data ETF | Franklin Exponential Data ETF | After Taxes on Distributions  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel Return after taxes on distributions
Average Annual Return, Percent oef_AvgAnnlRtrPct 16.57%
Average Annual Return, Percent oef_AvgAnnlRtrPct 0.43% [1]
Performance Inception Date oef_PerfInceptionDate Jan. 12, 2021
Franklin Exponential Data ETF | Franklin Exponential Data ETF | After Taxes on Distributions and Sales  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel Return after taxes on distributions and sale of Fund shares
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.86%
Average Annual Return, Percent oef_AvgAnnlRtrPct 0.33% [1]
Performance Inception Date oef_PerfInceptionDate Jan. 12, 2021
[1]

Since inception January 12, 2021.