v3.26.3
Dynamic Allocation Fund Investment Risks - Dynamic Allocation Fund
May 31, 2026
Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Market Risk. Market risk is both a direct and indirect risk of investing in the Fund. The Fund’s or an Underlying Fund’s share price can fall because of weakness in the broad market, a particular industry, or specific holdings. The market as a whole can decline for many reasons, including adverse political or economic developments here or abroad, changes in investor psychology, or heavy institutional selling. The prospects for an industry or company may deteriorate because of a variety of factors, including disappointing earnings or changes in the competitive environment. In addition, the investment adviser’s assessment of companies held in an Underlying Fund may prove incorrect, resulting in losses or poor performance even in a rising market. Finally, the Fund’s or an Underlying Fund’s investment approach could fall out of favor with the investing public, resulting in lagging performance versus other comparable portfolios.
Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Derivatives Risk. Derivatives risk is both a direct and indirect risk of investing in the Fund. A derivative is any financial instrument whose value is based on, and determined by, another security, index or benchmark (i.e., stock option, futures, caps, floors, etc.). To the extent a derivative contract is used to hedge another position in the Fund or an Underlying Fund, the Fund or Underlying Fund will be exposed to the risks associated with hedging described below. To the extent an option, futures contract, swap, or other derivative is used to enhance return, rather than as a hedge, the Fund or Underlying Fund will be directly exposed to the risks of the contract. Gains or losses from non-hedging positions may be substantially greater than the cost of the position. By purchasing over-the-counter derivatives, the Fund or Underlying Fund is exposed to credit quality risk of the counterparty.
Counterparty Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Counterparty Risk. Counterparty risk is both a direct and indirect risk of investing in the Fund. Counterparty risk is the risk that a counterparty to a security, loan or derivative held by the Fund or an Underlying Fund becomes bankrupt or otherwise fails to perform its obligations due to financial difficulties. The Fund or an Underlying Fund may experience significant delays in obtaining any recovery in a bankruptcy or other reorganization proceeding, and there may be no recovery or limited recovery in such circumstances.
Leverage Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Leverage Risk. Leverage risk is a direct risk of investing in the Fund. Certain managed futures instruments, and some other derivatives the Fund buys involve a degree of leverage. Leverage occurs when an investor has the right to a return on an investment that exceeds the return that the investor would be expected to receive based on the amount contributed to the investment. The Fund’s use of certain economically leveraged futures and other derivatives can result in a loss substantially greater than the amount invested in the futures or other derivative itself. Certain futures and other derivatives have the potential for unlimited loss, regardless of the size of the initial investment. When the Fund uses futures and other derivatives for leverage, a shareholder’s investment in the Fund will tend to be more volatile, resulting in larger gains or losses in response to the fluctuating prices of the Fund’s investments.
Bonds Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Bonds Risk. This is both a direct and indirect risk of investing in the Fund. As with any fund that invests significantly in bonds, the value of an investment in the Fund or an Underlying Fund may go up or down in response to changes in interest rates or defaults (or even the potential for future defaults) by bond issuers.
Interest Rate Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Interest Rate Risk. Fixed income securities may be subject to volatility due to changes in interest rates. The value of fixed-income securities may decline when interest rates go up or increase when interest rates go down. The interest earned on fixed-income securities may decline when interest rates go down or increase when interest rates go up. Duration is a measure of interest rate risk that indicates how price-sensitive a bond is to changes in interest rates. Longer-term and lower coupon bonds tend to be more sensitive to changes in interest rates. For example, a bond with a duration of three years will decrease in value by approximately 3% if interest rates increase by 1%. Changing interest rates may have unpredictable effects on markets, may result in heightened market volatility, and could negatively impact the Fund’s performance. Any future changes in monetary policy made by central banks and/or their governments are likely to affect the level of interest rates.
Credit Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Credit Risk. Credit risk is both a direct and indirect risk of investing in the Fund. Credit risk applies to most debt securities, but is generally not a factor for obligations backed by the “full faith and credit” of the U.S. Government. The Fund or an Underlying Fund could lose money if the issuer of a debt security is unable or perceived to be unable to pay interest or repay principal when it becomes due. Various factors could affect the issuer’s actual or perceived willingness or ability to make timely interest or principal payments, including changes in the issuer’s financial condition or in general economic conditions.
Hedging Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Hedging Risk. Hedging risk is both a direct and indirect risk of investing in this Fund. A hedge is an investment made in order to reduce the risk of adverse price movements in a currency or other investment, by taking an offsetting position (often through a derivative, such as an option or forward). While hedging strategies can be very useful and inexpensive ways of reducing risk, they are sometimes ineffective due to the unexpected changes in the market. Hedging also involves the risk that changes in the value of the related security will not match those of the instruments being hedged as expected, in which case any losses on the instruments being hedged may not be reduced. For gross currency hedges by Underlying Funds, there is an additional risk, to the extent that these transactions create exposure to currencies in which an Underlying Fund’s securities are not denominated.
Short Sales Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Short Sales Risk. Short sale risk is both a direct and indirect risk of investing in the Fund. Short sales by the Fund or an Underlying Fund involve certain risks and special considerations. Possible losses from short sales differ from losses that could be incurred from a purchase of a security, because losses from short sales are potentially unlimited, whereas losses from purchases can be no greater than the total amount invested.
US Government Obligations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] U.S. Government Obligations Risk. This is both a direct and indirect risk of investing in the Fund. U.S. Treasury obligations are backed by the “full faith and credit” of the U.S. Government and are generally considered to have minimal credit risk. Securities issued or guaranteed by federal agencies or authorities and U.S. Government-sponsored instrumentalities or enterprises may or may not be backed by the full faith and credit of the U.S. Government. For example, securities issued by the Federal Home Loan Mortgage Corporation, the Federal National Mortgage Association and the Federal Home Loan Banks are neither insured nor guaranteed by the U.S. Government; the securities may be supported only by the ability to borrow from the U.S. Treasury or by the credit of the issuing agency, authority, instrumentality or enterprise and, as a result, are subject to greater credit risk than securities issued or guaranteed by the U.S. Treasury.
Risk of Investing in Money Market Securities [Member]  
Prospectus [Line Items]  
Risk [Text Block] Risk of Investing in Money Market Securities. This is both a direct and indirect risk of investing in the Fund. An investment in the Fund is subject to the risk that the value of its investments in high-quality short-term obligations (“money market securities”) may be subject to changes in interest rates, changes in the rating of any money market security and in the ability of an issuer to make payments of interest and principal.
Issuer Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Issuer Risk. The value of a security may decline for a number of reasons directly related to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.
Dynamic Allocation Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Dynamic Allocation Risk. The Fund’s risks will directly correspond to the risks of the Underlying Funds and other direct investments in which it invests. The Fund is subject to the risk that the investment process that will determine the selection of the Underlying Funds and the allocation and reallocation of the Fund’s assets among the various asset classes may not produce the desired result. The Fund is also subject to the risk that AllianceBernstein may be prevented from trading certain derivatives effectively or in a timely manner.
Risk of Conflict with Insurance Company Interests [Member]  
Prospectus [Line Items]  
Risk [Text Block] Risk of Conflict with Insurance Company Interests. Managing the Fund’s net equity exposure may serve to reduce the risk from equity market volatility to the affiliated insurance companies and facilitate their ability to provide guaranteed benefits associated with certain Variable Contracts. While the interests of Fund shareholders and the affiliated insurance companies providing guaranteed benefits associated with the Variable Contracts are generally aligned, the affiliated insurance companies (and the Adviser by virtue of its affiliation with the insurance companies) may face potential conflicts of interest. In particular, certain aspects of the Fund’s management have the effect of mitigating the financial risks to which the affiliated insurance companies are subjected by providing those guaranteed benefits. In addition, the Fund’s performance may be lower than similar Funds that do not seek to manage their equity exposure.
Investment Company Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Investment Company Risk. The risks of the Fund owning other investment companies, including the Underlying Funds, generally reflect the risks of owning the underlying securities they are designed to track, although lack of liquidity in these investments could result in it being more volatile than the underlying Fund of securities. Disruptions in the markets for the securities held by other investment companies, including the Underlying Funds purchased or sold by the Fund could result in losses on the Fund’s investment in such securities. The other investment company companies, including Underlying Funds also have fees that increase their costs versus owning the underlying securities directly.
Large Cap Companies Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Large-Cap Companies Risk. Large-cap companies tend to be less volatile than companies with smaller market capitalizations. In exchange for this potentially lower risk, an Underlying Fund’s value may not rise as much as the value of Funds that emphasize smaller companies. 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 rate of successful smaller companies, particularly during extended periods of economic expansion.
Passively Managed Strategy Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] “Passively Managed” Strategy Risk. An Underlying Fund following a passively managed strategy will not deviate from its investment strategy. In most cases, it will involve a passively managed strategy utilized to achieve investment results that correspond to a particular market index. Such a Fund will not sell securities in its portfolio and buy different securities for other reasons, even if there are adverse developments concerning a particular security, company or industry. There can be no assurance that the strategy will be successful.
Small and Medium Sized Companies Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Small- and Medium-Sized Companies Risk. Securities of small- and medium-sized companies are usually more volatile and entail greater risks than securities of large companies.
Growth Style Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Growth Style Risk. Growth stocks are historically volatile, which will affect certain Underlying Funds.
Value Investing Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Value Investing Risk. The investment adviser’s judgments that a particular security is undervalued in relation to the company’s fundamental economic value may prove incorrect, which will affect certain Underlying Funds.
Foreign Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Foreign Investment Risk. Investments in foreign countries are subject to a number of risks. A principal risk is that fluctuations in the exchange rates between the U.S. dollar and foreign currencies may negatively affect the value of an investment. In addition, there may be less publicly available information about a foreign company and it may not be subject to the same uniform accounting, auditing and financial reporting standards as U.S. companies. Foreign governments may not regulate securities markets and companies to the same degree as the U.S. government. Foreign investments will also be affected by local political or economic developments and governmental actions by the United States or other governments. Consequently, foreign securities may be less liquid, more volatile and more difficult to price than U.S. securities. These risks are heightened for emerging markets issuers. Historically, the markets of emerging market countries have been more volatile than more developed markets; however, such markets can provide higher rates of return to investors.
Credit Quality Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Credit Quality Risk. The creditworthiness of an issuer is always a factor in analyzing fixed income securities. An issuer with a lower credit rating will be more likely than a higher rated issuer to default or otherwise become unable to honor its financial obligations. Issuers with low credit ratings typically issue junk bonds, which are considered speculative. In addition to the risk of default, junk bonds may be more volatile, less liquid, more difficult to value and more susceptible to adverse economic conditions or investor perceptions than investment grade bonds.
Mortgage and Asset Backed Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Mortgage- and Asset-Backed Securities Risk. Mortgage- and asset-backed securities represent interests in “pools” of mortgages or other assets, including consumer loans or receivables held in trust. Asset-backed securities issued by trusts and special purpose corporations are backed by a pool of assets, such as credit card or automobile loan receivables representing the obligations of a number of different parties. Mortgage-backed securities directly or indirectly provide funds for mortgage loans made to residential home buyers. These include securities that represent interests in pools of mortgage loans made by lenders such as commercial banks, savings and loan institutions, mortgage bankers and others. They include mortgage pass-through securities, collateralized mortgage obligations (“CMOs”), commercial mortgage-backed securities, mortgage dollar rolls, CMO residuals, stripped mortgage-backed securities, non-agency residential mortgage-backed securities and other securities that directly or indirectly represent a participation in, or are secured by and payable from, mortgage loans or real property. The characteristics of these mortgage-backed and asset-backed securities differ from traditional fixed-income securities. Mortgage-backed securities are subject to “prepayment risk” and “extension risk.” Prepayment risk is the risk that, when interest rates fall, certain types of obligations will be paid off by the obligor more quickly than originally anticipated and the Fund may have to invest the proceeds in securities with lower yields. Extension risk is the risk that, when interest rates rise, certain obligations will be paid off by the obligor more slowly than anticipated, causing the value of these securities to fall. Small movements in interest rates (both increases and decreases) may quickly and significantly reduce the value of certain mortgage-backed securities. These securities also are subject to risk of default on the underlying mortgage, particularly during periods of economic downturn.
Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] If the value of the assets of the Fund goes down, you could lose money.
Risk Not Insured Depository Institution [Member]  
Prospectus [Line Items]  
Risk [Text Block] Shares of the Fund are not bank deposits and are not guaranteed or insured by any bank, government entity or the Federal Deposit Insurance Corporation.