S000096484 [Member] Performance Management - Baron Financials ETF |
Dec. 31, 2025 |
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| Prospectus [Line Items] | ||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance | |||||||||||||||||||||
| Performance Narrative [Text Block] | As of the close of business on December 12, 2025, the Predecessor Fund transferred its assets and liabilities to the Fund in a tax‑free reorganization (the “Reorganization”). The Fund and the Predecessor Fund have identical investment objectives and fundamental investment policies, as well as substantially similar investment strategies. However, ETFs, such as the Fund, are structurally different from mutual funds, such as the Predecessor Fund, in several important aspects, including the ability for ETF shareholders to trade shares intraday on an exchange at market prices, the full daily transparency of the ETF’s portfolio holdings and the potential for increased tax efficiency. The performance of the Predecessor Fund for the periods prior to December 12, 2025 has not been restated to reflect the annual operating expenses of the Fund, which are lower than those of the Predecessor Fund. Because the Fund has different fees and expenses than the Predecessor Fund, the Fund would also have had different performance results. Additionally, if the Predecessor Fund had operated as an ETF, its performance may have differed. The accompanying bar chart and table provide some indication of the risks of investing in the Fund. Performance results shown in the bar chart and the performance table below reflect the performance of the Fund. The bar chart shows the Fund’s year‑by‑year performance and its average annual performance compared to that of a broad measure of market performance. Updated performance information for the Fund is available at www.BaronCapitalGroup.com/daily‑prices‑and‑performance or by calling 1‑800‑99BARON (1-800-992-2766). The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The accompanying bar chart and table provide some indication of the risks of investing in the Fund. Performance results shown in the bar chart and the performance table below reflect the performance of the Fund. The bar chart shows the Fund’s year‑by‑year performance and its average annual performance compared to that of a broad measure of market performance. | |||||||||||||||||||||
| Bar Chart [Heading] | Total Return (%) for the year ended December 31 | |||||||||||||||||||||
| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns (for periods ended 12/31/2025) | |||||||||||||||||||||
| Performance Table Narrative | The following table presents the Fund’s annual returns and long-term performance (before and after taxes), along with the change in value of relevant market indexes for various periods ended December 31, 2025. These indexes include: the MSCI USA Financials Index, which measures the performance of large- and mid‑cap segments of the U.S. equity universe within the Financials sector; the S&P 500 Index, a broad-based index representing the overall U.S. equity market; and the MSCI ACWI Index, a global equity index capturing large- and mid‑cap representation across 23 Developed Markets (DM) and 24 Emerging Markets (EM) countries. As of December 12, 2025, the MSCI USA Financials Index became the Fund’s primary benchmark, replacing the FactSet Global FinTech Index. Replacing the FactSet Global FinTech Index with the MSCI USA Financials Index aligns the Fund with benchmarks more commonly used by its ETF peer group and provides more meaningful performance comparisons. The broad-based S&P 500 and MSCI ACWI indexes remain as additional benchmarks for comparison purposes. 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 Market Index Changed | As of December 12, 2025, the MSCI USA Financials Index became the Fund’s primary benchmark, replacing the FactSet Global FinTech Index. Replacing the FactSet Global FinTech Index with the MSCI USA Financials Index aligns the Fund with benchmarks more commonly used by its ETF peer group and provides more meaningful performance comparisons. The broad-based S&P 500 and MSCI ACWI indexes remain as additional benchmarks for comparison purposes. | |||||||||||||||||||||
| Performance Table Uses Highest Federal Rate | 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 | 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. | |||||||||||||||||||||
| Average Annual Return, Caption [Optional Text] | Average Annual Total Returns for the periods ended December 31, 2025 | |||||||||||||||||||||
| Performance Availability Website Address [Text] | www.BaronCapitalGroup.com/daily‑prices‑and‑performance | |||||||||||||||||||||
| Performance Availability Phone [Text] | 1‑800‑99BARON (1-800-992-2766) | |||||||||||||||||||||
| Baron Financials ETF | ||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Best Quarter: | |||||||||||||||||||||
| Highest Quarterly Return | 32.00% | |||||||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2020 | |||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Worst Quarter: | |||||||||||||||||||||
| Lowest Quarterly Return | (22.40%) | |||||||||||||||||||||
| Lowest Quarterly Return, Date | Jun. 30, 2022 |