Investment Risks - AB Emerging Markets Multi-Asset Portfolio
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Mar. 31, 2026 |
| Market Risks [Member] |
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| Prospectus [Line Items] |
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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 local, regional
or global 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, or global conflicts, any of which can affect large portions of the
securities markets. It includes the risk that a particular style of investing may be underperforming the market generally. |
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| Sector Risk [Member] |
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Sector
Risk: The Fund may have more risk than a more diversified portfolio 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. |
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| Foreign Non U S Risk [Member] |
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Foreign
(Non‑U.S.) 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 due to adverse market, economic, political, regulatory
or other factors. |
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| Currency Risk [Member] |
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Currency
Risk: Fluctuations in currency exchange rates may negatively affect the value of the Fund’s investments or reduce its returns.
Emerging market currencies may be more volatile and less liquid, and subject to significantly greater risk of currency controls and convertibility
restrictions, than currencies of developed countries. |
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| Country Concentration Risk [Member] |
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Country
Concentration Risk: The Fund may not be diversified among countries or geographic regions and the effect on the Fund’s net
asset value, or NAV, of the specific risks identified above, such as political, regulatory and currency risks, may be magnified due to
concentration of the Fund’s investments in a particular country or region, such as China. Risks of the Fund’s investments
in securities of companies economically tied to China may include the volatility of the Chinese stock market, the Chinese economy’s
heavy dependence on exports, the continuing importance of the role of the Chinese Government, which may take legal or regulatory actions
that affect the contractual arrangements of a company or economic and market practices and cause the value of the securities of an issuer
held by the Fund to decrease significantly, and political unrest. Recent developments in relations between the U.S. and China have heightened
concerns of increased tariffs and restrictions on trade between the two countries. An increase in tariffs or trade restrictions, or even
the threat of such developments, could lead to a significant reduction in international trade, which could have a negative impact on the
economy of Asian countries and a commensurately negative impact on the Fund. China has a complex territorial dispute regarding the sovereignty
of Taiwan and has made threats of invasion. Military conflict between China and Taiwan may adversely affect securities of Chinese, Taiwan-based
and other issuers both in and outside the region. While the Chinese economy has grown at a rapid rate in recent years, the rate of growth
has been declining, and there can be no assurance that China’s economy will continue to grow in the future. |
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| Allocation Risk [Member] |
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Allocation
Risk: The allocation of Fund assets among different asset classes, such as equity securities, debt securities and currencies, may
have a significant effect on the Fund’s NAV when one of these asset classes is performing better or worse than others. The diversification
benefits typically associated with investing in both equity and debt securities may be limited in the emerging markets context, as movements
in emerging market equity and emerging market debt markets may be more correlated than movements in the equity and debt markets of developed
countries. |
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| Capitalization Risk [Member] |
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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. |
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| Interest Rate Risk [Member] |
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Interest
Rate Risk: Changes in interest rates will affect the value of investments in fixed-income securities. When interest rates rise,
the value of existing investments in fixed-income securities tends to fall and this decrease in value may not be offset by higher income
from new investments. Interest rate risk is generally greater for fixed-income securities with longer maturities or durations. Changing
interest rates may have unpredictable effects on the markets, may result in heightened market volatility and may detract from Fund performance.
In addition, changes in monetary policy may exacerbate the risks associated with changing interest rates. |
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| Credit Risk [Member] |
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Credit
Risk: An issuer or guarantor of a fixed-income security, or the counterparty to a derivatives or other contract, may be unable
or unwilling to make timely payments of interest or principal, or to otherwise honor its obligations. The issuer or guarantor may default,
causing a loss of the full principal amount of a security and accrued interest. The degree of risk for a particular security may be reflected
in its credit rating. There is the possibility that the credit rating of a fixed-income security may be downgraded after purchase, which
may adversely affect the value of the security. |
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| Sovereign Debt Risk [Member] |
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Sovereign
Debt Risk: Investments in sovereign debt obligations expose the Fund to the direct or indirect consequences of political, social
and economic changes in countries that issue the obligations. Such changes may affect a foreign government’s willingness or ability
to make timely payments of its obligations. In addition, no established market may exist for many sovereign debt obligations. Reduced
secondary market liquidity may have an adverse effect on the market price of an instrument and the Fund’s ability to dispose of
particular instruments. |
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| Below Investment Grade Securities Risk [Member] |
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Below
Investment Grade Securities Risk: Investments in fixed-income securities with lower ratings (commonly known as “junk bonds”)
tend to have a higher probability that an issuer will default or fail to meet its payment obligations. These securities may be subject
to greater price volatility due to factors such as specific corporate developments, interest rate sensitivity and negative perceptions
of the junk bond market generally, and may be more difficult to trade than other types of securities. |
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| Derivatives Risks [Member] |
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Derivatives
Risk: Derivatives may be difficult to price or unwind and leveraged so that small changes may produce disproportionate losses for
the Fund. A short position in a derivative instrument involves the risk of a theoretically unlimited increase in the value of the underlying
asset, reference rate or index, which could cause the Fund to suffer a potentially unlimited loss. Derivatives, especially over‑the‑counter
derivatives, are also subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction)
on a derivative transaction will be unable or unwilling to honor its contractual obligations to the Fund. |
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| Leverage Risk [Member] |
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Leverage
Risk: To the extent the Fund uses leveraging techniques, its NAV may be more volatile because leverage tends to exaggerate the
effect of changes in interest rates and any increase or decrease in the value of the Fund’s investments. |
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| Illiquid Investments Risk [Member] |
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Illiquid
Investments Risk: Illiquid investments risk exists when certain investments are or become difficult to purchase or sell. Difficulty
in selling such investments may result in sales at disadvantageous prices affecting the value of your investment in the Fund. Causes of
illiquid investments risk may include low trading volumes, large positions and heavy redemptions of Fund shares. Illiquid investments
risk may be higher in a rising interest rate environment, when the value and liquidity of fixed-income securities generally decline.
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| Active Trading Risk [Member] |
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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. |
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| Capital Gain Risk [Member] |
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Capital
Gain Risk: As of the date of this Prospectus, a substantial portion of the Fund’s net asset value 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. |
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| Management Risk [Member] |
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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. |
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| Emerging Market Risk [Member] |
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| Prospectus [Line Items] |
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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. |
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| Risk Lose Money [Member] |
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| Prospectus [Line Items] |
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| Risk [Text Block] |
As with all investments, you may lose
money by investing in the Fund.
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