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Investment Risks - AB Emerging Markets Multi-Asset Portfolio
Mar. 31, 2025
Market Risk [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.
Foreign Non U S Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
 
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.
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. 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.
Country Concentration Risk [Member]  
Prospectus [Line Items]  
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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, and the continuing importance of the role of the Chinese Government. 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.
Allocation Risk [Member]  
Prospectus [Line Items]  
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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.
Capitalization Risk [Member]  
Prospectus [Line Items]  
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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.
Interest Rate Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
 
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.
Credit Risks [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.
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.
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.
Derivatives Risks [Member]  
Prospectus [Line Items]  
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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.
Leverage Risk [Member]  
Prospectus [Line Items]  
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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.
Illiquid Investments Risk [Member]  
Prospectus [Line Items]  
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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.
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.
Emerging Market Risk [Member]  
Prospectus [Line Items]  
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Emerging Market Risk: Investments in emerging market countries may involve more risk 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.
Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] As with all investments, you may lose money by investing in the Fund.