| Label | Element | Value | ||||
|---|---|---|---|---|---|---|
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk/Return [Heading] | oef_RiskReturnHeading | SEI Select Emerging Markets Equity ETF | ||||
| Objective [Heading] | oef_ObjectiveHeading | Investment Objective | ||||
| Objective, Primary [Text Block] | oef_ObjectivePrimaryTextBlock | Long-term capital appreciation. |
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| 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 pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the fee table or example below. |
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| Operating Expenses Caption [Optional Text] | oef_OperatingExpensesCaption | Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments) | ||||
| Expense Example [Heading] | oef_ExpenseExampleHeading | Example. | ||||
| Expense Example Narrative [Text Block] | oef_ExpenseExampleNarrativeTextBlock | This Example is intended to help you compare the cost of owning shares of 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 or hold 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. |
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| Expense Example by, Year, Caption [Text] | oef_ExpenseExampleByYearCaption | Although your actual costs may be higher or lower, based on these assumptions, your costs would be: | ||||
| Portfolio Turnover [Heading] | oef_PortfolioTurnoverHeading | Portfolio Turnover. | ||||
| Portfolio Turnover [Text Block] | oef_PortfolioTurnoverTextBlock | The Fund may pay 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 the 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 90% of the average value of its portfolio. |
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| Portfolio Turnover, Rate | oef_PortfolioTurnoverRate | 90.00% | ||||
| Strategy [Heading] | oef_StrategyHeading | Principal Investment Strategies | ||||
| Strategy Narrative [Text Block] | oef_StrategyNarrativeTextBlock | Under normal circumstances, the SEI Select Emerging Markets Equity ETF (the Fund) will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities of emerging market issuers. Equity securities include common stocks, participation notes and depositary receipts of all capitalization ranges. The Fund normally maintains investments in at least six emerging market countries, however, it may invest a substantial amount of its assets in issuers located in a single country or a limited number of countries. Due to the size of its economy relative to other emerging market countries, it is expected that China will generally constitute a significant exposure in the Fund. Investments in China may include depositary receipts, variable interest entities (VIEs) and shares in mainland China-based companies that trade on Chinese stock exchanges such as the Shanghai Stock Exchange and the Shenzhen Stock Exchange (China A-Shares) through the Shanghai-Hong Kong Stock Connect program and Shenzhen-Hong Kong Stock Connect program (collectively, Stock Connect). Emerging market countries are those countries that are: (i) characterized as developing or emerging by any of the World Bank, the United Nations, the International Finance Corporation, or the European Bank for Reconstruction and Development; (ii) included in an emerging markets index by a recognized index provider; or (iii) countries with similar developing frontier or emerging characteristics as countries classified as emerging market countries pursuant to sub-paragraph (i) and (ii) above, in each case determined at the time of purchase. The Fund will utilize an integrated management approach where SEI Investments Management Corporation (SIMC or the Adviser) will combine its own proprietary quantitative-based, active stock portfolio, with model portfolios from one or more Sub-Advisers to construct the Fund's portfolio. SIMC's quantitative model evaluates all of the securities in the investment universe of emerging market issuers based on certain characteristics (Factors) that are determined by the Adviser, such as Value, Momentum, Quality and Low Volatility. Each of these factor families are described in further detail in the "More Information About the Funds — Factors" section. The Adviser uses its own judgment and model-based systems to assess which Factors to use and to determine what portion of the Fund's assets should be invested in each security identified. However, based on perceived market opportunities, the Adviser may reallocate the Fund's assets to tilt in favor of one or more Factors. The Adviser may add, remove or modify certain Factors in its model based on investment research or in response to changes in market conditions. SIMC will select Sub-Advisers who on an ongoing basis provide a model portfolio composed of the Sub-Adviser's recommendations as to the securities to be purchased, sold or retained by the Fund (the Sub-Adviser's securities list). Taking into account the investment objective of the Fund, SIMC may incorporate the recommendations contained in the Sub-Adviser's securities list, in whole or in part, when it trades securities within the Fund in the aggregate. Securities recommended or suggested for purchase within the Sub-Adviser's securities list are assessed by SIMC and considered alongside securities identified by SIMC for purchase or sale in the Fund. SIMC will determine the constituents and weightings of securities held by the Fund and the securities held within the Fund may not have the same weightings of securities as those contained within the Sub-Adviser's securities list as SIMC may choose, whether substantially or entirely to disregard the Sub-Adviser's securities list when implementing trades in aggregate within the Fund. The Adviser may adjust the securities in the Fund to implement its forward-looking views regarding various portfolio characteristics, or for risk management purposes. |
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| Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] | fnd_NmRule35d1TermDfnSmryTextBlock | Under normal circumstances, the SEI Select Emerging Markets Equity ETF (the Fund) will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities of emerging market issuers. Equity securities include common stocks, participation notes and depositary receipts of all capitalization ranges. Emerging market countries are those countries that are: (i) characterized as developing or emerging by any of the World Bank, the United Nations, the International Finance Corporation, or the European Bank for Reconstruction and Development; (ii) included in an emerging markets index by a recognized index provider; or (iii) countries with similar developing frontier or emerging characteristics as countries classified as emerging market countries pursuant to sub-paragraph (i) and (ii) above, in each case determined at the time of purchase. | ||||
| Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] | fnd_NmRule35d1TermSlctnCritSmryTextBlock | SIMC's quantitative model evaluates all of the securities in the investment universe of emerging market issuers based on certain characteristics (Factors) that are determined by the Adviser, such as Value, Momentum, Quality and Low Volatility. Each of these factor families are described in further detail in the "More Information About the Funds — Factors" section. The Adviser uses its own judgment and model-based systems to assess which Factors to use and to determine what portion of the Fund's assets should be invested in each security identified. However, based on perceived market opportunities, the Adviser may reallocate the Fund's assets to tilt in favor of one or more Factors. The Adviser may add, remove or modify certain Factors in its model based on investment research or in response to changes in market conditions. | ||||
| Rule 35d-1 Eighty Percent Investment Policy [Text Block] | fnd_NmRule35d1EightyPctInvstmntPlcyTextBlock | Under normal circumstances, the SEI Select Emerging Markets Equity ETF (the Fund) will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities of emerging market issuers.Equity securities include common stocks, participation notes and depositary receipts of all capitalization ranges. | ||||
| Bar Chart and Performance Table [Heading] | oef_BarChartAndPerformanceTableHeading | Performance | ||||
| Performance Narrative [Text Block] | oef_PerformanceNarrativeTextBlock |
The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing the Fund's performance for the past calendar year and by showing how the Fund's average annual returns for 1 year and since the Fund's 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. For current performance information, please call 1-800-DIAL-SEI. |
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| Performance Information Illustrates Variability of Returns [Text] | oef_PerformanceInformationIllustratesVariabilityOfReturns | The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing the Fund's performance for the past calendar year and by showing how the Fund's average annual returns for 1 year and since the Fund's inception compare with those of a broad measure of market performance. | ||||
| Performance Availability Phone [Text] | oef_PerformanceAvailabilityPhone | 1-800-DIAL-SEI | ||||
| 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 Closing [Text Block] | oef_BarChartClosingTextBlock | Best Quarter: 13.09% (6/30/2025) |
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| Year to Date Return, Label [Optional Text] | oef_YearToDateReturnLabel | The Fund's total return (pre-tax) | ||||
| Bar Chart, Year to Date Return, Date | oef_BarChartYearToDateReturnDate | Jun. 30, 2026 | ||||
| Bar Chart, Year to Date Return | oef_BarChartYearToDateReturn | 27.32% | ||||
| Highest Quarterly Return, Label [Optional Text] | oef_HighestQuarterlyReturnLabel | Best Quarter: | ||||
| Highest Quarterly Return, Date | oef_BarChartHighestQuarterlyReturnDate | Jun. 30, 2025 | ||||
| Highest Quarterly Return | oef_BarChartHighestQuarterlyReturn | 13.09% | ||||
| Lowest Quarterly Return, Label [Optional Text] | oef_LowestQuarterlyReturnLabel | Worst Quarter: | ||||
| Lowest Quarterly Return, Date | oef_BarChartLowestQuarterlyReturnDate | Mar. 31, 2025 | ||||
| Lowest Quarterly Return | oef_BarChartLowestQuarterlyReturn | 3.70% | ||||
| Performance Table Heading | oef_PerformanceTableHeading | Average Annual Total Returns (for the periods ended December 31, 2025) | ||||
| Index No Deduction for Fees, Expenses, or Taxes [Text] | oef_IndexNoDeductionForFeesExpensesTaxes | (reflects no deduction for fees, expenses or taxes) | ||||
| Performance Table Uses Highest Federal Rate | oef_PerformanceTableUsesHighestFederalRate | 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. | ||||
| Performance Table Not Relevant to Tax Deferred | oef_PerformanceTableNotRelevantToTaxDeferred | After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. | ||||
| Performance Table Narrative | oef_PerformanceTableNarrativeTextBlock |
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. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Risk Lose Money [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments. | ||||
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Risk Not Insured [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | An investment in the Fund is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, SIMC or any of its affiliates. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Equity Securities Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Equity Securities Risk. Equity securities are subject to changes in value, and their values may be more volatile than those of other asset classes. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Momentum Securities Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Momentum Securities Risk. Stocks that previously exhibited high momentum characteristics may not experience positive momentum or may experience more volatility than the market as a whole. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Quality Securities Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Quality Securities Risk. There is no guarantee that the past performance of stocks that SIMC or a Sub-Adviser determines are quality will continue. Companies that issue these stocks may experience lower than expected returns or may experience negative growth, as well as increased leverage, resulting in lower than expected or negative returns to Fund shareholders. Many factors can affect a stock's quality and performance, and the impact of these factors on a stock or its price can be difficult to predict. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Value Securities Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Value Securities Risk. Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. SIMC or a Sub-Adviser may be unsuccessful in identifying undervalued securities. Value securities have generally performed better than non-value securities during periods of economic recovery (although there is no assurance that they will continue to do so). Value securities may go in and out of favor over time. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Low Volatility Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Low Volatility Risk. Although subject to the risks of common stocks, low volatility stocks are seen as having a lower risk profile than the overall markets. However, a portfolio comprised of low volatility stocks may not produce investment exposure that has lower variability to changes in such stocks' price levels. Low volatility stocks are likely to underperform the broader market during periods of rapidly rising stock prices when market volatility is high. Low volatility stocks also may not protect against market declines. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Quantitative Investing Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Quantitative Investing Risk. Due to the significant role technology plays in quantitative strategies, they carry the risk of unintended or unrecognized issues or flaws in the design, coding, implementation or maintenance of the computer programs or technology used in the development and implementation of the quantitative strategy. Utility interruptions or other key systems outages also can impair the performance of quantitative investment strategies. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Market Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Market Risk. The market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the equity or bond market as a whole. The Fund's market price may deviate from the value of the Fund's underlying portfolio holdings, particularly in times of market stress, with the result that investors may pay significantly more or receive significantly less than the underlying value of the Fund shares bought or sold. This can be reflected as a spread between the bid and ask prices for the Fund quoted during the day or a premium or discount in the closing price from the Fund's NAV. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Issuer Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Issuer Risk. The performance of the Fund depends on the performance of individual securities to which the Fund has exposure. Changes in the financial condition or credit rating of an issuer of those securities may cause the value of the Fund to decline. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Market Trading Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Market Trading Risk. 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 disruptions in the creation/redemption process. Active trading markets for the Fund's shares may not be developed or maintained by market makers or Authorized Participants (as defined below). Authorized Participants are not obligated to make a market in the Fund's shares or to submit purchase or redemption orders for Creation Units (as defined below). In times of market stress, market makers or Authorized Participants may step away from their respective roles, which could lead to variances between the market price of the Fund's shares and its underlying NAV. Trading in shares on an exchange may be halted in certain circumstances. If a trading halt occurs, a shareholder may temporarily be unable to purchase or sell shares of the Fund. Any of these factors could lead the Fund's shares to trade 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, particularly during times of market stress. SIMC or a Sub-Adviser cannot predict whether shares will trade above (premium), below (discount) or at NAV or whether the spread between bid and ask prices will widen. In addition, there can be no assurance that the requirements of the listing exchange necessary to maintain the listing of the Fund will continue to be met. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Foreign Investment/Emerging Markets Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Foreign Investment/Emerging Markets Risk. The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory, tax, accounting and audit environments. These additional risks may be heightened with respect to emerging market countries because political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Investments in emerging markets are subject to the added risk that information in emerging market investments may be unreliable or outdated due to differences in regulatory, accounting or auditing and financial record keeping standards, or because less information about emerging market investments is publicly available. In addition, the rights and remedies associated with emerging market investments may be different than investments in developed markets. A lack of reliable information, rights and remedies increase the risks of investing in emerging markets in comparison to more developed markets. In addition, periodic U.S. Government restrictions on investments in issuers from certain foreign countries may require the Fund to sell such investments at inopportune times, which could result in losses to the Fund. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Country Concentration Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Country Concentration Risk. The Fund's concentration of its assets in issuers located in a single country or a limited number of countries will increase the impact of, and potential losses associated with, the risks set forth in the Foreign Investment/Emerging Markets Risk. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Risk of Investing in China [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Risk of Investing in China. China is an emerging market, and as a result, investments in securities of companies organized and listed in China may be subject to liquidity constraints and significantly higher volatility, from time to time, than investments in securities of more developed markets. China may be subject to considerable government intervention and varying degrees of economic, political and social instability. Internal social unrest or confrontations with other neighboring countries could have a significant impact on the economy of China. Reduction in spending on Chinese products and services, institution of tariffs or other trade barriers, or a downturn in any of the economies of China's key trading partners may have an adverse impact on the Chinese economy. There also is no guarantee that the Chinese government will not revert from its current open-market economy to an economic policy of central planning. These factors may result in, among other things, a greater risk of stock market, interest rate, and currency fluctuations, as well as inflation. Accounting, auditing and financial reporting standards in China are different from U.S. standards and, therefore, disclosure of certain material information may not be made, may be less available, or may be less reliable. It may also be difficult or impossible for the Fund, U.S. authorities and regulators to obtain or enforce a judgment in a Chinese court. In addition, periodic U.S. Government restrictions on investments in Chinese companies may result in a Fund having to sell such prohibited securities at inopportune times. Such prohibited securities may have less liquidity as a result of such U.S. Government designation and the market price of such prohibited securities may decline, which may cause the Fund to incur losses. The Fund may also be subject to additional risks related to investments in VIEs. Instead of directly owning the equity securities of a Chinese company, a VIE enters into service and other contracts with the Chinese company. Although the VIE has no equity ownership of the Chinese company, the contractual arrangements permit the VIE to consolidate the Chinese company into its financial statements. Intervention by the Chinese government with respect to VIEs could significantly affect the Chinese company's performance and the enforceability of the VIE's contractual arrangements with the Chinese company. The Fund may, directly or indirectly, purchase China A-Shares through Stock Connect or that may be available in the future through additional stock connect programs, a mutual market access program designed to, among other things, enable foreign investment in the People's Republic of China (PRC) via brokers in Hong Kong. There are significant risks inherent in investing in China A-Shares through Stock Connect. The underdeveloped state of PRC's investment and banking systems subjects the settlement, clearing, and registration of China A-Shares transactions to heightened risks. Stock Connect can only operate when both PRC and Hong Kong markets are open for trading and when banking services are available in both markets on the corresponding settlement days. As such, if either or both markets are closed on a U.S. trading day, the Fund may not be able to dispose of its China A-Shares in a timely manner, which could adversely affect the Fund's performance. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Large Capitalization Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Large Capitalization Risk. The risk that larger, more established companies may be unable to respond quickly to new competitive challenges such as changes in technology and consumer tastes. Larger companies also may not be able to attain the high growth rates of successful smaller companies. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Small and Medium Capitalization Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Small and Medium Capitalization Risk. The risk that small and medium capitalization companies in which the Fund may invest may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small and medium capitalization companies may have limited product lines, markets and financial resources and may depend upon a relatively small management group. Therefore, small capitalization and medium capitalization stocks may be more volatile than those of larger companies. Small capitalization and medium capitalization stocks may be traded over-the-counter (OTC). OTC stocks may trade less frequently and in smaller volume than exchange listed stocks and may have more price volatility than that of exchange-listed stocks. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Depositary Receipts Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Depositary Receipts Risk. Depositary receipts, such as American Depositary Receipts, are certificates evidencing ownership of shares of a foreign issuer that are issued by depositary banks and generally trade on an established market. Depositary receipts are subject to many of the risks associated with investing directly in foreign securities, including, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory, tax, accounting and audit environment. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Participation Notes (P-Notes) Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Participation Notes (P-Notes) Risk. P-Notes are participation interest notes that are issued by banks or broker-dealers and are designed to offer a return linked to a particular underlying equity, debt, currency or market. Investments in P-Notes involve the same risks associated with a direct investment in the underlying foreign companies or foreign securities markets that they seek to replicate. However, there can be no assurance that the trading price of P-Notes will equal the underlying value of the foreign companies or foreign securities markets that they seek to replicate. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Currency Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Currency Risk. As a result of the Fund's investments in securities denominated in, and/or receiving revenues in, foreign currencies, the Fund will be subject to currency risk. Currency risk is the risk that foreign currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency hedged. In either event, the dollar value of an investment in the Fund would be adversely affected. Currency exchange rates may fluctuate in response to, among other things, changes in interest rates, intervention (or failure to intervene) by U.S. or foreign governments, central banks or supranational entities, or by the imposition of currency controls or other political developments in the United States or abroad. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Liquidity Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Liquidity Risk. In stressed market conditions, the market for a Fund's shares may become less liquid in response to deteriorating liquidity in the markets for the Fund's underlying portfolio holdings. This adverse effect on liquidity for the Fund's shares in turn could lead to differences between the market price of the Fund's shares and its underlying NAV and/or widening the spread between bid and ask prices. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Management Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Management Risk. SIMC or a Sub-Adviser may not successfully implement the Fund's investment strategies and, as a result, the Fund may not meet its investment objective and/or underperform other investment vehicles with similar investment objectives and strategies. Errors or delays in coordinating creation and redemption basket processes among Sub-Advisers can also reduce the Fund's performance. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Operational Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock |
Operational Risk. The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third parties, failed or inadequate processes and technology or systems failures. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Authorized Participant Concentration Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Authorized Participant Concentration Risk. Only broker-dealers (referred to as Authorized Participants or APs) that have executed authorized participation agreements with respect to the Trust may engage in creation or redemption transactions directly with the Fund, and no AP is obligated to engage in creation and/or redemption transactions. To the extent that APs exit the business or are unable to proceed with orders, Fund shares may be more likely to trade at a premium or discount to NAV, have wider spreads between bid and ask prices or face trading halts or delisting. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Cybersecurity Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Cybersecurity Risk. Failures or breaches of the electronic systems of the Fund, SIMC, a Sub-Adviser, the Fund's distributor, and other service providers, market makers, APs or the issuers of securities in which the Fund invests have the ability to cause disruptions, negatively impact the Fund's business operations and/or potentially result in financial losses to the Fund and its shareholders. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Cash Transactions Risk [Member] | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Risk [Text Block] | oef_RiskTextBlock | Cash Transactions Risk. The Fund, unlike certain other ETFs, may effect creations and redemptions partly or wholly for cash, rather than through in-kind distributions of securities. Because the Fund may effect redemptions for cash rather than in-kind, the Fund may be required to sell portfolio securities in order to obtain the cash needed to distribute redemption proceeds and it may subsequently recognize gains on such sales that the Fund might not have recognized if it were to distribute portfolio securities in-kind. As a result, an investment in the Fund may be less tax-efficient than an investment in an ETF that primarily or wholly effects creations and redemptions in-kind. Moreover, cash transactions may have to be carried out over several days if the securities markets are relatively illiquid at the time the Fund must sell securities and may involve considerable brokerage fees and taxes. These brokerage fees and taxes, which will be higher than if the Fund sold and redeemed its shares principally in-kind, will be passed on to purchasers and redeemers of Creation Units in the form of creation and redemption transaction fees. As a result of these factors, the spreads between the bid and the offered prices of the Fund's shares may be wider than those of shares of ETFs that primarily or wholly transact in-kind. |
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| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Management Fees (as a percentage of Assets) | oef_ManagementFeesOverAssets | 0.60% | [1] | |||
| Distribution and Service (12b-1) Fees | oef_DistributionAndService12b1FeesOverAssets | 0.00% | ||||
| Other Expenses (as a percentage of Assets): | oef_OtherExpensesOverAssets | 0.00% | [1],[2] | |||
| Expenses (as a percentage of Assets) | oef_ExpensesOverAssets | 0.60% | ||||
| Expense Example, with Redemption, 1 Year | oef_ExpenseExampleYear01 | $ 61 | ||||
| Expense Example, with Redemption, 3 Years | oef_ExpenseExampleYear03 | 192 | ||||
| Expense Example, with Redemption, 5 Years | oef_ExpenseExampleYear05 | 335 | ||||
| Expense Example, with Redemption, 10 Years | oef_ExpenseExampleYear10 | 750 | ||||
| Expense Example, No Redemption, 1 Year | oef_ExpenseExampleNoRedemptionYear01 | 61 | ||||
| Expense Example, No Redemption, 3 Years | oef_ExpenseExampleNoRedemptionYear03 | 192 | ||||
| Expense Example, No Redemption, 5 Years | oef_ExpenseExampleNoRedemptionYear05 | 335 | ||||
| Expense Example, No Redemption, 10 Years | oef_ExpenseExampleNoRedemptionYear10 | $ 750 | ||||
| SEI Select Emerging Markets Equity ETF | MSCI Emerging Markets Index Return (net) (reflects no deduction for fees, expenses or taxes) | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Average Annual Return, Label [Optional Text] | oef_AverageAnnualReturnLabel | MSCI Emerging Markets Index Return (net) (reflects no deduction for fees, expenses or taxes) | ||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 34.36% | ||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 20.18% | ||||
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Annual Return [Percent] | oef_AnnlRtrPct | 36.74% | ||||
| Average Annual Return, Label [Optional Text] | oef_AverageAnnualReturnLabel | Return Before Taxes | ||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 36.74% | ||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 23.03% | ||||
| Performance Inception Date | oef_PerfInceptionDate | Oct. 08, 2024 | ||||
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | After Taxes on Distributions | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Average Annual Return, Label [Optional Text] | oef_AverageAnnualReturnLabel | Return After Taxes on Distributions | ||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 35.19% | ||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 21.80% | ||||
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | After Taxes on Distributions and Sales | ||||||
| Prospectus [Line Items] | oef_ProspectusLineItems | |||||
| Average Annual Return, Label [Optional Text] | oef_AverageAnnualReturnLabel | Return After Taxes on Distributions and Sale of Fund Shares | ||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 22.05% | ||||
| Average Annual Return, Percent | oef_AvgAnnlRtrPct | 17.23% | ||||
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