Label | Element | Value | |||||
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BARON DISCOVERY FUND | |||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||
Risk/Return [Heading] | rr_RiskReturnHeading | Baron Discovery Fund | |||||
Objective [Heading] | rr_ObjectiveHeading | Investment Goal | |||||
Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The investment goal of Baron Discovery Fund (the “Fund”) is capital appreciation through investments primarily in securities of small-sized growth companies.
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Expense [Heading] | rr_ExpenseHeading | Fees and Expenses of the Fund | |||||
Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The table below describes the fees and expenses that you would pay if you bought and held shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.
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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 for Fundshareholders. These costs, which are not reflected in Total Annual Fund Operating Expenses or in the example, affect the Fund’s performance. During the most recent fiscal year ended September 30, 2022, the Fund’s portfolio turnover rate was 40.64% of the average value of its portfolio. | |||||
Portfolio Turnover, Rate | rr_PortfolioTurnoverRate | 40.64% | |||||
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 those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, giving effect to the expense reimbursement agreement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be: |
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Strategy [Heading] | rr_StrategyHeading | Investments, Risks, and Performance Principal Investment Strategies of the Fund | |||||
Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock | The Fund is a diversified fund that invests for the long term primarily in equity securities in the form of common stock of U.S. small-sized growth companies. The Adviser defines small-sized companies as those, at the time of purchase, with market capitalizations up to the largest market cap stock in the Russell 2000 Growth Index at reconstitution, or companies with market capitalizations up to $2.5 billion, whichever is larger. The Adviser seeks to invest in businesses it believes have significant opportunities for growth, sustainable competitive advantages, exceptional management, and an attractive valuation. Because of its long-term approach, the Fund could have a significant percentage of its assets invested in securities that have appreciated beyond their market capitalizations at the time of the Fund’s investment.
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Risk [Heading] | rr_RiskHeading | Principal Risks of Investing in the Fund | |||||
Risk Narrative [Text Block] | rr_RiskNarrativeTextBlock | General Stock Market. Fund losses may be incurred due to declines in one or more markets in which Fund investments are made. These declines may be the result of, among other things, political, regulatory, market, economic or social developments affecting the relevant market(s). In addition, turbulence as has recently been experienced, caused, among other reasons, by increased inflation, tightening monetary policy and interest rate increases by the US Federal Reserve or similar international bodies, and reduced liquidity in financial markets may continue to negatively affect many issuers, which could have an adverse effect on your Fund investment. Global economies and financial markets are increasingly interconnected, and conditions and events in one country, region or financial market, such as Russia’s invasion of Ukraine in February 2022 and the world-wide response to it, have and may continue to adversely impact issuers and markets worldwide. The coronavirus disease 2019 (COVID-19) global pandemic and the aggressive responses taken by many governments or voluntarily imposed by private parties, including closing borders, restricting travel and imposing prolonged quarantines or similar restrictions, as well as the closure of, or operational changes to, many retail and other businesses, have had negative impacts, and in many cases severe negative impacts, on markets worldwide. It is not known how long such impacts, or any future impacts of other significant events described above, will or would last, but there could be a prolonged period of global economic slowdown, which may impact your Fund investment. Growth Investing. Growth stocks can react differently to issuer, political, market and economic developments than the market as a whole and other types of stocks. Growth stocks tend to be more expensive relative to their earnings or assets compared to other types of stocks. As a result, because growth stocks tend to be sensitive to changes in their earnings and to increasing interest rates and inflation, they tend to be more volatile than other types of stocks. In response, growth investing as an investment style may go out of favor with investors. Small-Sized Companies. The Adviser believes there is more potential for capital appreciation in small-sized companies, but there also may be more risk. Securities of small-sized companies may not be well known to most investors, and the securities may be less actively traded than those of large businesses. The securities of small-sized companies may fluctuate in price more widely than the stock market generally, and they may be more difficult to sell during market downturns. Small-sized companies rely more on the skills of management and on their continued tenure. Investing in small-sized companies requires a long-term outlook and may require shareholders to assume more risk and to have more patience than investing in the securities of larger, more established companies. Special Situations. The Funds may invest in “special situations.” A special situation arises when, in the opinion of the Adviser, the securities of a company will be recognized and appreciate in value due to a specific anticipated development at that company. Such developments might include a new product, a management change, an acquisition or a technological advancement. The risk of investing in special situations is that the anticipated development does not occur or its impact is not what the Adviser expected. Health Care Sector Risk. Investments in health care companies are subject to a number of risks, including the adverse impact of legislative actions and government regulations. These actions and regulations can affect the approval process for patents, medical devices and drugs, the funding of research and medical care programs, and the operation and licensing of facilities and personnel. Biotechnology and related companies are affected by patent considerations, intense competition, rapid technology change and obsolescence, and regulatory requirements of various federal and state agencies. In addition, some of these companies are relatively small and have thinly traded securities, may not yet offer products or may offer a single product, and may have persistent losses during a new product’s transition from development to production, or erratic revenue patterns. The stock prices of these companies are very volatile, particularly when their products are up for regulatory approval and/or under regulatory scrutiny.
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Risk Lose Money [Text] | rr_RiskLoseMoney | Fund losses may be incurred due to declines in one or more markets in which Fund investments are made. | |||||
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 (Retail Shares) by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns for 1 and 5 years and since inception compare with those of two broad measures 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. Updated performance information is available online at www.BaronFunds.com/performance or by calling 1‑800‑99BARON (1‑800‑992‑2766).
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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 (Retail Shares) by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns for 1 and 5 years and since inception compare with those of two broad measures of market performance. | |||||
Performance Availability Phone [Text] | rr_PerformanceAvailabilityPhone | 1‑800‑99BARON (1‑800‑992‑2766) | |||||
Performance Availability Website Address [Text] | rr_PerformanceAvailabilityWebSiteAddress | www.BaronFunds.com/performance | |||||
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 | Year by Year Total Return (%) as of December 31 of Each Year (Retail Shares) | |||||
Annual Return Caption [Text] | rr_AnnualReturnCaption | Average Annual Total Returns for the periods ended December 31, 2022 | |||||
Bar Chart Closing [Text Block] | rr_BarChartClosingTextBlock |
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Performance Table Heading | rr_PerformanceTableHeading | Average Annual Total Returns (for periods ended 12/31/22) | |||||
Performance Table Uses Highest Federal Rate | rr_PerformanceTableUsesHighestFederalRate | After-tax returns are calculated using the highest individual federal marginal income tax rate in effect at the time of each distribution and assumed sale, but they do not include the impact of state and local taxes. | |||||
Performance Table Not Relevant to Tax Deferred | rr_PerformanceTableNotRelevantToTaxDeferred | After-tax returns are not relevant to investors who hold their Fund’s shares in a tax-deferred account (including a 401(k) or IRA or Coverdell account), or to investors that are tax-exempt. | |||||
Performance Table Narrative | rr_PerformanceTableNarrativeTextBlock | The following table shows the Fund’s Retail Shares’ annual returns and long-term performance (before and after taxes) and the change in value of broad-based market indexes over various periods ended December 31, 2022. The table also shows the average annual returns of the Fund’s Institutional Shares and R6 Shares, but it does not show after-tax returns. After-tax returns are calculated using the highest individual federal marginal income tax rate in effect at the time of each distribution and assumed sale, but they do not include the impact of state and local taxes. Your actual after-tax returns depend on your own tax situation and may differ from those shown. After-tax returns reflect past tax effects and are not predictive of future tax effects. After-tax returns are not relevant to investors who hold their Fund’s shares in a tax-deferred account (including a 401(k) or IRA or Coverdell account), or to investors that are tax-exempt.
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Performance Table Closing [Text Block] | rr_PerformanceTableClosingTextBlock | The Russell 2000® Growth Index is an unmanaged index of U.S. small-cap growth companies. The S&P 500 Index is an unmanaged index of larger-cap companies.
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BARON DISCOVERY FUND | Retail Shares | |||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||
Management Fee | rr_ManagementFeesOverAssets | 1.00% | |||||
Distribution (12b-1) Fee | rr_DistributionAndService12b1FeesOverAssets | 0.25% | |||||
Other Expenses | rr_OtherExpensesOverAssets | 0.07% | |||||
Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 1.32% | |||||
1 | rr_ExpenseExampleYear01 | $ 134 | |||||
3 | rr_ExpenseExampleYear03 | 418 | |||||
5 | rr_ExpenseExampleYear05 | 723 | |||||
10 | rr_ExpenseExampleYear10 | $ 1,590 | |||||
2014 | rr_AnnualReturn2014 | 13.45% | |||||
2015 | rr_AnnualReturn2015 | (14.73%) | |||||
2016 | rr_AnnualReturn2016 | 21.40% | |||||
2017 | rr_AnnualReturn2017 | 35.52% | |||||
2018 | rr_AnnualReturn2018 | 0.42% | |||||
2019 | rr_AnnualReturn2019 | 26.46% | |||||
2020 | rr_AnnualReturn2020 | 65.71% | |||||
2021 | rr_AnnualReturn2021 | 4.63% | |||||
2022 | rr_AnnualReturn2022 | (35.30%) | |||||
Highest Quarterly Return, Label | rr_HighestQuarterlyReturnLabel | Best Quarter: | |||||
Highest Quarterly Return, Date | rr_BarChartHighestQuarterlyReturnDate | Jun. 30, 2020 | |||||
Highest Quarterly Return | rr_BarChartHighestQuarterlyReturn | 39.02% | |||||
Lowest Quarterly Return, Label | rr_LowestQuarterlyReturnLabel | Worst Quarter: | |||||
Lowest Quarterly Return, Date | rr_BarChartLowestQuarterlyReturnDate | Dec. 31, 2018 | |||||
Lowest Quarterly Return | rr_BarChartLowestQuarterlyReturn | (23.39%) | |||||
1 year | rr_AverageAnnualReturnYear01 | (35.30%) | |||||
5 years | rr_AverageAnnualReturnYear05 | 7.34% | |||||
10 years | rr_AverageAnnualReturnYear10 | ||||||
Since Inception | rr_AverageAnnualReturnSinceInception | 11.09% | |||||
Inception date | rr_AverageAnnualReturnInceptionDate | Sep. 30, 2013 | |||||
BARON DISCOVERY FUND | Institutional Shares | |||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||
Management Fee | rr_ManagementFeesOverAssets | 1.00% | |||||
Distribution (12b-1) Fee | rr_DistributionAndService12b1FeesOverAssets | none | |||||
Other Expenses | rr_OtherExpensesOverAssets | 0.06% | |||||
Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 1.06% | |||||
1 | rr_ExpenseExampleYear01 | $ 108 | |||||
3 | rr_ExpenseExampleYear03 | 337 | |||||
5 | rr_ExpenseExampleYear05 | 585 | |||||
10 | rr_ExpenseExampleYear10 | $ 1,294 | |||||
1 year | rr_AverageAnnualReturnYear01 | (35.12%) | |||||
5 years | rr_AverageAnnualReturnYear05 | 7.61% | |||||
10 years | rr_AverageAnnualReturnYear10 | ||||||
Since Inception | rr_AverageAnnualReturnSinceInception | 11.37% | |||||
Inception date | rr_AverageAnnualReturnInceptionDate | Sep. 30, 2013 | |||||
BARON DISCOVERY FUND | R6 Shares | |||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||
Management Fee | rr_ManagementFeesOverAssets | 1.00% | |||||
Distribution (12b-1) Fee | rr_DistributionAndService12b1FeesOverAssets | none | |||||
Other Expenses | rr_OtherExpensesOverAssets | 0.06% | |||||
Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 1.06% | |||||
1 | rr_ExpenseExampleYear01 | $ 108 | |||||
3 | rr_ExpenseExampleYear03 | 337 | |||||
5 | rr_ExpenseExampleYear05 | 585 | |||||
10 | rr_ExpenseExampleYear10 | $ 1,294 | |||||
1 year | rr_AverageAnnualReturnYear01 | (35.14%) | [1] | ||||
5 years | rr_AverageAnnualReturnYear05 | 7.61% | [1] | ||||
10 years | rr_AverageAnnualReturnYear10 | [1] | |||||
Since Inception | rr_AverageAnnualReturnSinceInception | 11.37% | [1] | ||||
Inception date | rr_AverageAnnualReturnInceptionDate | Aug. 31, 2016 | [1] | ||||
BARON DISCOVERY FUND | Return after taxes on distributions | Retail Shares | |||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||
1 year | rr_AverageAnnualReturnYear01 | (35.30%) | |||||
5 years | rr_AverageAnnualReturnYear05 | 6.53% | |||||
10 years | rr_AverageAnnualReturnYear10 | ||||||
Since Inception | rr_AverageAnnualReturnSinceInception | 10.57% | |||||
Inception date | rr_AverageAnnualReturnInceptionDate | Sep. 30, 2013 | |||||
BARON DISCOVERY FUND | Return after taxes on distributions and sale of Fund shares | Retail Shares | |||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||
1 year | rr_AverageAnnualReturnYear01 | (20.90%) | |||||
5 years | rr_AverageAnnualReturnYear05 | 5.74% | |||||
10 years | rr_AverageAnnualReturnYear10 | ||||||
Since Inception | rr_AverageAnnualReturnSinceInception | 9.14% | |||||
Inception date | rr_AverageAnnualReturnInceptionDate | Sep. 30, 2013 | |||||
BARON DISCOVERY FUND | Russell 2000® Growth Index (reflects no deduction for fees, expenses or taxes) | |||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||
1 year | rr_AverageAnnualReturnYear01 | (26.36%) | |||||
5 years | rr_AverageAnnualReturnYear05 | 3.51% | |||||
10 years | rr_AverageAnnualReturnYear10 | ||||||
Since Inception | rr_AverageAnnualReturnSinceInception | 6.69% | |||||
BARON DISCOVERY FUND | S&P 500 Index (reflects no deduction for fees, expenses or taxes) | |||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||
1 year | rr_AverageAnnualReturnYear01 | (18.11%) | |||||
5 years | rr_AverageAnnualReturnYear05 | 9.42% | |||||
10 years | rr_AverageAnnualReturnYear10 | ||||||
Since Inception | rr_AverageAnnualReturnSinceInception | 11.45% | |||||
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