Label | Element | Value | |||||
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Baron Durable Advantage Fund | |||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||
Risk/Return [Heading] | rr_RiskReturnHeading | Baron Durable Advantage Fund | |||||
Objective [Heading] | rr_ObjectiveHeading | Investment Goal | |||||
Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The investment goal of the Baron Durable Advantage Fund (the “Fund”) is capital appreciation through investments primarily in securities of large-sized 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) | |||||
Fee Waiver or Reimbursement over Assets, Date of Termination | rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination | August 29, 2033 | |||||
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 Fund shareholders. 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 42.09% of the average value of its portfolio. | |||||
Portfolio Turnover, Rate | rr_PortfolioTurnoverRate | 42.09% | |||||
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 primarily in equity securities in the form of common stock of U.S. large‑sized companies. The Adviser defines large‑sized companies as those, at the time of purchase, with market capitalizations no smaller than the top 90th percentile by total market capitalization of the S&P 500 Index at June 30, or companies with market capitalizations above $10 billion, whichever is smaller. The Adviser seeks to invest primarily in what it believes are unique, well-managed, competitively advantaged businesses that generate significant excess free cash flow that is consistently returned to shareholders in the form of stock buybacks and/or dividends.
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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. Large‑Cap Companies. Because the Fund invests primarily in large‑cap company securities, it may underperform other funds during periods when the Fund’s securities are out of favor.
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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 year and since inception compare 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. 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 year and since inception compare with those of a broad measure 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 a broad-based market index 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 S&P 500 Index is an unmanaged index of larger‑cap companies.
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Baron Durable Advantage Fund | Retail Shares | |||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||
Management Fee | rr_ManagementFeesOverAssets | 0.65% | |||||
Distribution (12b-1) Fee | rr_DistributionAndService12b1FeesOverAssets | 0.25% | |||||
Other Expenses | rr_OtherExpensesOverAssets | 0.59% | [1] | ||||
Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 1.49% | |||||
Expense Reimbursements | rr_FeeWaiverOrReimbursementOverAssets | (0.54%) | |||||
Total Annual Fund Operating Expenses After Expense Reimbursements | rr_NetExpensesOverAssets | 0.95% | [1] | ||||
1 | rr_ExpenseExampleYear01 | $ 97 | |||||
3 | rr_ExpenseExampleYear03 | 303 | |||||
5 | rr_ExpenseExampleYear05 | 525 | |||||
10 | rr_ExpenseExampleYear10 | $ 1,166 | |||||
2018 | rr_AnnualReturn2018 | (7.48%) | |||||
2019 | rr_AnnualReturn2019 | 40.78% | |||||
2020 | rr_AnnualReturn2020 | 20.11% | |||||
2021 | rr_AnnualReturn2021 | 31.79% | |||||
2022 | rr_AnnualReturn2022 | (24.99%) | |||||
Highest Quarterly Return, Label | rr_HighestQuarterlyReturnLabel | Best Quarter: | |||||
Highest Quarterly Return, Date | rr_BarChartHighestQuarterlyReturnDate | Jun. 30, 2020 | |||||
Highest Quarterly Return | rr_BarChartHighestQuarterlyReturn | 22.11% | |||||
Lowest Quarterly Return, Label | rr_LowestQuarterlyReturnLabel | Worst Quarter: | |||||
Lowest Quarterly Return, Date | rr_BarChartLowestQuarterlyReturnDate | Mar. 31, 2020 | |||||
Lowest Quarterly Return | rr_BarChartLowestQuarterlyReturn | (16.02%) | |||||
1 year | rr_AverageAnnualReturnYear01 | (24.99%) | |||||
5 years | rr_AverageAnnualReturnYear05 | 9.11% | |||||
10 years | rr_AverageAnnualReturnYear10 | ||||||
Since Inception | rr_AverageAnnualReturnSinceInception | 9.11% | |||||
Inception date | rr_AverageAnnualReturnInceptionDate | Dec. 29, 2017 | |||||
Baron Durable Advantage Fund | Institutional Shares | |||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||
Management Fee | rr_ManagementFeesOverAssets | 0.65% | |||||
Distribution (12b-1) Fee | rr_DistributionAndService12b1FeesOverAssets | none | |||||
Other Expenses | rr_OtherExpensesOverAssets | 0.45% | [1] | ||||
Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 1.10% | |||||
Expense Reimbursements | rr_FeeWaiverOrReimbursementOverAssets | (0.40%) | |||||
Total Annual Fund Operating Expenses After Expense Reimbursements | rr_NetExpensesOverAssets | 0.70% | [1] | ||||
1 | rr_ExpenseExampleYear01 | $ 72 | |||||
3 | rr_ExpenseExampleYear03 | 224 | |||||
5 | rr_ExpenseExampleYear05 | 390 | |||||
10 | rr_ExpenseExampleYear10 | $ 871 | |||||
1 year | rr_AverageAnnualReturnYear01 | (24.81%) | |||||
5 years | rr_AverageAnnualReturnYear05 | 9.37% | |||||
10 years | rr_AverageAnnualReturnYear10 | ||||||
Since Inception | rr_AverageAnnualReturnSinceInception | 9.37% | |||||
Inception date | rr_AverageAnnualReturnInceptionDate | Dec. 29, 2017 | |||||
Baron Durable Advantage Fund | R6 Shares | |||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||
Management Fee | rr_ManagementFeesOverAssets | 0.65% | |||||
Distribution (12b-1) Fee | rr_DistributionAndService12b1FeesOverAssets | none | |||||
Other Expenses | rr_OtherExpensesOverAssets | 0.42% | [1] | ||||
Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 1.07% | |||||
Expense Reimbursements | rr_FeeWaiverOrReimbursementOverAssets | (0.37%) | |||||
Total Annual Fund Operating Expenses After Expense Reimbursements | rr_NetExpensesOverAssets | 0.70% | [1] | ||||
1 | rr_ExpenseExampleYear01 | $ 72 | |||||
3 | rr_ExpenseExampleYear03 | 224 | |||||
5 | rr_ExpenseExampleYear05 | 390 | |||||
10 | rr_ExpenseExampleYear10 | $ 871 | |||||
1 year | rr_AverageAnnualReturnYear01 | (24.81%) | |||||
5 years | rr_AverageAnnualReturnYear05 | 9.37% | |||||
10 years | rr_AverageAnnualReturnYear10 | ||||||
Since Inception | rr_AverageAnnualReturnSinceInception | 9.37% | |||||
Inception date | rr_AverageAnnualReturnInceptionDate | Dec. 29, 2017 | |||||
Baron Durable Advantage Fund | Return after taxes on distributions | Retail Shares | |||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||
1 year | rr_AverageAnnualReturnYear01 | (24.99%) | |||||
5 years | rr_AverageAnnualReturnYear05 | 9.07% | |||||
10 years | rr_AverageAnnualReturnYear10 | ||||||
Since Inception | rr_AverageAnnualReturnSinceInception | 9.07% | |||||
Inception date | rr_AverageAnnualReturnInceptionDate | Dec. 29, 2017 | |||||
Baron Durable Advantage Fund | Return after taxes on distributions and sale of Fund shares | Retail Shares | |||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||
1 year | rr_AverageAnnualReturnYear01 | (14.79%) | |||||
5 years | rr_AverageAnnualReturnYear05 | 7.21% | |||||
10 years | rr_AverageAnnualReturnYear10 | ||||||
Since Inception | rr_AverageAnnualReturnSinceInception | 7.21% | |||||
Inception date | rr_AverageAnnualReturnInceptionDate | Dec. 29, 2017 | |||||
Baron Durable Advantage 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 | 9.42% | |||||
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