v3.26.1
S000079470 [Member] Investment Risks - AB Disruptors ETF
Nov. 30, 2025
Equity Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
Equity Securities Risk: The Fund invests in publicly-traded equity securities, and their value may fluctuate, sometimes rapidly and unpredictably, which means a security may be worth more or less than when it was purchased. These fluctuations can be based on a variety of factors including a company’s financial condition as well as macro-economic factors such as interest rates, inflation rates, global market conditions, and non-economic factors such as market perceptions and social or political events.
Global Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
Global Risk: The Fund invests in companies in multiple countries, and companies in which the Fund invests may experience differing outcomes with respect to safety and security, economic uncertainties, natural and environmental conditions, health conditions (including pandemics such as Covid-19) and/or systemic market dislocations (including market dislocations due to events outside a company’s country or region, including supply chain events). The global interconnectivity of industries and companies, especially with respect to goods, can be negatively impacted by events occurring beyond a company’s principal geographic location. These events can contribute to volatility, valuation and liquidity issues, and can affect specific companies, countries, regions and global markets.
Emerging Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
Emerging Market Risk: Investments in emerging market countries may involve more risks than investments in other foreign countries because the markets are less developed, less liquid and are subject to increased potential for market manipulation, and increased economic, political, regulatory or other uncertainties.
Foreign Non U S Investments Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
Foreign (Non-U.S.) Investments Risk: Investments in securities of non-U.S. issuers may involve more risk than those of U.S. issuers. These securities may fluctuate more widely in price and may be more difficult to trade than domestic securities due to adverse market, economic, political, regulatory or other factors.
Currency Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
Currency Risk: Fluctuations in currency exchange rates may negatively affect the value of the Fund’s investments or reduce its returns.
Active Trading Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
Active Trading Risk: The Fund expects to engage in active and frequent trading of its portfolio securities and its portfolio turnover rate may greatly exceed 100%. A higher rate of portfolio turnover increases transaction costs, which may negatively affect the Fund’s return. In addition, a high rate of portfolio turnover may result in substantial short-term gains, which may have adverse tax consequences for Fund shareholders.
Capitalization Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
Capitalization Risk: Investments in small- and mid-capitalization companies may be more volatile than investments in large-capitalization companies. Investments in small-capitalization companies may have additional risks because these companies have limited product lines, markets or financial resources.
ETF Share Price and Net Asset Value Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
ETF Share Price and Net Asset Value Risk: The Fund’s shares are listed for trading on the NYSE Arca, Inc. (“NYSE Arca” or an “Exchange”). The Fund’s shares are generally bought and sold in the secondary market at market prices. The NAV of the Fund will fluctuate with changes in the market value of the Fund’s holdings. The Fund’s NAV is calculated once per day, at the end of the day. The market price of a share on an Exchange could be higher than the NAV (premium), or lower than the NAV (discount) and may fluctuate during the trading day. When all or a portion of the Fund’s underlying securities trade in a market that is closed when the market for the Fund’s shares is open, there may be differences between the current value of a security and the last quoted price for that security in the closed local market, which could lead to a deviation between the market value of the Fund’s shares and the Fund’s NAV. Disruptions in the creations and redemptions process or the existence of extreme market volatility could result in the Fund’s shares trading above or below NAV. As the Fund may invest in securities traded on foreign exchanges, Fund shares may trade at a larger premium or discount to the Fund’s NAV per share than shares of other ETFs. In addition, in stressed market conditions, the market for Fund shares may become less liquid in response to deteriorating liquidity in the markets for the Fund’s underlying portfolio holdings.
Authorized Participant Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
Authorized Participant Risk: Only a limited number of financial institutions that enter into an authorized participant relationship with the Fund (“Authorized Participants”) may engage in creation or redemption transactions. If the Fund’s Authorized Participants decide not to create or redeem shares, Fund shares may trade at a larger premium or discount to the Fund’s NAV per share, or the Fund could face trading halts or de-listing.
Active Trading Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
Active Trading Market Risk: There is no guarantee that an active trading market for Fund shares will exist at all times. In times of market stress, markets can suffer erratic or unpredictable trading activity, extraordinary volatility or wide bid/ask spreads, which could cause some market makers and Authorized Participants to reduce their market activity or “step away” from making a market in ETF shares. Market makers and Authorized Participants are not obligated to place or execute purchase and redemption orders. This could cause the Fund’s market price to deviate, materially, from the NAV, and reduce the effectiveness of the ETF arbitrage process. Any absence of an active trading market for Fund shares could lead to a heightened risk that there will be a difference between the market price of a Fund share and the underlying value of the Fund share.
Depositary Receipts Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
Depositary Receipts Risk: Investing in depositary receipts involves risks that are similar to the risks of direct investments in foreign securities. For example, investing in depositary receipts may involve risks relating to political, economic or regulatory conditions in foreign countries. In addition, the issuers of the securities underlying certain depositary receipts are under no obligation to distribute shareholder communications or pass through any voting rights with respect to the deposited securities to the holders of such receipts.
Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
Sector Risk: The Fund may have more risk because it may invest to a significant extent in one or more particular market sectors, such as the information technology sector. To the extent it does so, market or economic factors affecting the relevant sector(s) could have a major effect on the value of the Fund’s investments. Because the Fund may invest to a significant extent in the information technology sector, the Fund’s performance largely depends on the general condition of that sector. Companies in the information technology sector could be affected by, among other things, changes in interest rates, overall economic conditions, short product cycles, rapid obsolescence of products, competition, and government regulation. Companies in the software industry may be adversely affected by, among other things, the decline or fluctuation of subscription renewal rates for their products and services and actual or perceived vulnerabilities in their products or services.
Capital Gain Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
Capital Gain Risk: As of the date of this Prospectus, a substantial portion of the Fund’s NAV is attributable to realized and/or net unrealized capital gains on portfolio securities. If the Fund realizes capital gains in excess of realized capital losses in any fiscal year, it generally expects to make capital gain distributions to shareholders. You may receive distributions that are attributable to appreciation of portfolio securities that happened before you made your investment. Unless you purchase shares through a tax-advantaged account (such as an IRA or 401(k) plan), these distributions will be taxable to you even though they economically represent a return of a portion of your investment. You should consult your tax professional about your investment in the Fund.
Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
Management Risk: The Fund is subject to management risk because it is an actively-managed investment fund. The Adviser will apply its investment techniques and risk analyses in making investment decisions, but there is no guarantee that its techniques will produce the intended results. Some of these techniques may incorporate, or rely upon, quantitative models, but there is no guarantee that these models will generate accurate forecasts, reduce risk or otherwise perform as expected.
Market Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
Market Risk: The value of the Fund’s assets will fluctuate as the market or markets in which the Fund invests fluctuate. The value of the Fund’s investments may decline, sometimes rapidly and unpredictably, simply because of economic changes or other events, including public health crises (including the occurrence of a contagious disease or illness), terrorism, war, changing interest rate levels, the imposition of new or additional tariffs, and regional and global conflicts, that affect large portions of the market. It includes the risk that a particular style of investing may be underperforming the market generally.
Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block]
As with all investments, you may lose money by investing in the Fund.
Risk Nondiversified Status [Member]  
Prospectus [Line Items]  
Risk [Text Block]
•  
Non-Diversification Risk: The Fund may have more risk because it is “non-diversified”, meaning that it can invest more of its assets in a smaller number of issuers. Accordingly, changes in the value of a single security may have a more significant effect, either negative or positive, on the Fund’s net asset value (“NAV”) than on the NAV of a diversified fund.