Fundamental Data Science Large Growth ETF Performance Management - Fundamental Data Science Large Growth ETF |
Jun. 30, 2026 |
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| Prospectus [Line Items] | |
| Bar Chart and Performance Table [Heading] | <span style="font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Past Performance</span> |
| Performance Narrative [Text Block] | This section provides some indication of the risks of investing in the Fund. The Fund commenced operations after the assets of another investment company advised by the adviser, JPMorgan U.S. GARP Equity Fund (the predecessor fund), were transferred to the Fund in a tax-free reorganization as of the close of business on July 10, 2026. All share classes of the predecessor fund were converted into the Fund. The Fund has the same investment objective as the predecessor fund, but will be managed based on a different strategy; the Fund’s past performance may have been different if the Fund were managed using the current strategy. Updated performance information is available by visiting www.jpmorganfunds.com or by calling 1-844-457-6383 (844-4JPM ETF). The bar chart shows how the performance of the Fund’s Shares (represented by the performance of the predecessor fund’s Class R6 Shares) has varied from year to year for the past ten calendar years. The table shows the Fund’s average annual total returns (represented by the average annual total returns of the predecessor fund’s Class R6 Shares) for the past one year, five years and ten years. The table compares the Fund’s performance (represented by the performance of the predecessor fund’s Class R6 Shares) to the performance of the Russell 1000® Index and Russell 1000® Growth Index. The Russell 1000® Index serves as the Fund’s regulatory index and provides a broad measure of market performance. The Russell 1000® Growth Index is the Fund’s additional index and is more representative of the Fund’s investment universe than the regulatory index. Performance for the Fund’s Shares has not been adjusted to reflect the Fund’s Shares’ lower expenses than those of the predecessor fund’s Class R6 Shares. Performance for the predecessor fund is based on the NAV per share of the predecessor fund shares rather than on market-determined prices. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Frank Russell Company is the source and owner of the Russell Index data contained or reflected in this material and all trademarks and copyrights related thereto. Frank Russell Company is not responsible for the formatting or configuration of this material or for any inaccuracy in the adviser’s presentation thereof. |
| Performance Past Does Not Indicate Future [Text] | <span style="font-family:Arial Narrow;font-size:10pt;">Past performance (before and after taxes) is not necessarily</span><span style="font-family:Arial Narrow;font-size:10pt;"> an indication of how the Fund will perform in the future</span> |
| Performance Information Illustrates Variability of Returns [Text] | <span style="font-family:Arial Narrow;font-size:10pt;">The bar chart shows how the performance of the Fund’s Shares (represented by the performance of the predecessor fund’s Class R6 Shares) has varied from year to year for the past ten calendar years. The table shows the Fund’s average annual total returns (represented by the average annual total returns of the predecessor fund’s Class R6 Shares) for the past one year, five years and ten years. </span> |
| Performance Additional Market Index [Text] | <span style="font-family:Arial Narrow;font-size:10pt;">The table compares the Fund’s </span><span style="font-family:Arial Narrow;font-size:10pt;">performance (represented by the performance of the predecessor fund’s Class R6 Shares) to the performance of the Russell 1000® Index and Russell 1000® Growth Index. The Russell 1000® Index serves as the Fund’s regulatory index and provides a broad measure of market performance. The Russell 1000® Growth Index is the Fund’s additional index and is more representative of the Fund’s investment universe than the regulatory index. </span> |
| Bar Chart [Heading] | <span style="color:#FFFFFF;font-family:Arial Narrow;font-size:10pt;font-weight:bold;margin-left:0.0pt;">YEAR-BY-YEAR RETURNS</span> |
| Bar Chart Closing [Text Block] | Best Quarter2nd quarter, 202024.85%Worst Quarter2nd quarter, 2022-19.95%The Fund’s year-to-date total returnthrough9/30/26was7.84%. |
| Performance Table Heading | <span style="color:#FFFFFF;font-family:Arial Narrow;font-size:11pt;font-weight:bold;margin-left:0.0pt;">AVERAGE ANNUAL TOTAL RETURNS</span><span style="color:#FFFFFF;font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">(For periods ended December 31, 2025)</span> |
| Performance Table Narrative | 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 the investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. |
| Performance Table Uses Highest Federal Rate | <span style="font-family:Arial Narrow;font-size:10pt;">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. </span> |
| Performance Table Not Relevant to Tax Deferred | <span style="font-family:Arial Narrow;font-size:10pt;">Actual after-tax returns </span><span style="font-family:Arial Narrow;font-size:10pt;">depend on the investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.</span> |
| Performance Availability Website Address [Text] | www.jpmorganfunds.com |
| Performance Availability Phone [Text] | 1-844-457-6383 (844-4JPM ETF) |
| ETF | |
| Prospectus [Line Items] | |
| Year to Date Return, Label [Optional Text] | <span style="font-family:Arial Narrow;font-size:9pt;margin-left:0.0pt;">The Fund’s year-to-date total return</span> |
| Bar Chart, Year to Date Return | 7.84% |
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 |
| Highest Quarterly Return, Label [Optional Text] | <span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;margin-left:0.0pt;">Best Quarter</span> |
| Highest Quarterly Return | 24.85% |
| Highest Quarterly Return, Date | Jun. 30, 2020 |
| Lowest Quarterly Return, Label [Optional Text] | <span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;margin-left:0.0pt;">Worst Quarter</span> |
| Lowest Quarterly Return | (19.95%) |
| Lowest Quarterly Return, Date | Jun. 30, 2022 |