v3.26.1
SA Index Allocation 80-20 Portfolio Investment Risks - SA Index Allocation 80-20 Portfolio
Dec. 31, 2025
Asset Allocation Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Asset Allocation Risk. The Portfolio’s risks will directly correspond to the risks of the Underlying Portfolios in which it invests. The Portfolio is subject to the risk that the selection of the Underlying Portfolios and the allocation and reallocation of the Portfolio’s assets among the various asset classes and market sectors may not produce the desired result.
Equity Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Equity Securities Risk. The Portfolio invests principally in Underlying Portfolios that invest in equity securities and is therefore subject to the risk that stock prices will fall and may underperform other asset classes. Individual stock prices fluctuate from day-to-day and may decline significantly.
Large Cap Companies Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Large-Cap Companies Risk. The Portfolio invests in Underlying Portfolios that invest substantially in large-cap companies. Large-cap companies tend to be less volatile than companies with smaller market capitalizations. In exchange for this potentially lower risk, the Portfolio’s value may not rise as much as the value of portfolios 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.
Small and Medium Sized Companies Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Small- and Medium-Sized Companies Risk. The Portfolio invests in Underlying Portfolios that may invest in securities of small- and medium-capitalization companies. Securities of small- and medium-sized companies are usually more volatile and entail greater risks than securities of large companies.
Foreign Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Foreign Investment Risk. The Portfolio’s investments in Underlying Portfolios that invest in the securities of foreign issuers or issuers with significant exposure to foreign markets involve additional risk. Foreign countries in which an Underlying Portfolio may invest may have markets that are less liquid, less regulated and more volatile than U.S. markets. The value of the Underlying Portfolio’s investments may decline because of factors affecting the particular issuer as well as foreign markets and issuers generally, such as unfavorable government actions, and political or financial instability and other conditions or events (including, for example, military confrontations, war, terrorism, sanctions, disease/virus, outbreaks and epidemics). Lack of relevant data and reliable public information may also affect the value of these securities.
Foreign Currency Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Foreign Currency Risk. The value of an Underlying Portfolio’s foreign investments may fluctuate due to changes in currency exchange rates. A decline in the value of foreign currencies relative to the U.S. dollar generally can be expected to depress the value of an Underlying Portfolio’s non-U.S. dollar-denominated securities.
Bonds Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Bonds Risk. The Portfolio invests in Underlying Portfolios that invest principally in bonds, which may cause the value of your investment in the Portfolio to go up or down in response to changes in interest rates or defaults (or even the potential for future defaults) by bond issuers. Fixed income securities may be subject to volatility due to changes in interest rates.
Credit Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Credit Risk. Credit risk applies to most fixed income securities, but is generally not a factor for obligations backed by the “full faith and credit” of the U.S. Government. An Underlying Portfolio could lose money if the issuer of a fixed income security is unable or perceived to be unable to pay interest or to repay principal when it becomes due. 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. 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 other bonds.
Interest Rate Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Interest Rate Risk. The Portfolio invests in Underlying Portfolios that invest substantially in fixed income securities. Fixed income securities may be subject to volatility due to changes in interest rates. 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. The Federal Reserve has recently begun to raise the federal funds rate to address rising inflation. As interest rates rise from historically low levels, the Portfolio may face heightened interest rate risk. For example, a bond with a duration of three years will decrease in value by approximately 3% if interest rates increase by 1%. Any future changes in monetary policy made by central banks and/or their governments are likely to affect the level of interest rates.
Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Management Risk. The Portfolio is subject to management risk because it is an actively managed investment portfolio. The Portfolio’s portfolio managers apply investment techniques and risk analyses in making investment decisions, but there can be no guarantee that these decisions or individual securities selected by the portfolio managers will produce the desired results.
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.
Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Market Risk. The Portfolio’s share price or the market as a whole can decline for many reasons or be adversely affected by a number of factors, including, without limitation: weakness in the broad market, a particular industry, or specific holdings; adverse social, political, regulatory or economic developments in the United States or abroad; changes in investor psychology; technological disruptions; heavy institutional selling; military confrontations, war, terrorism and other armed conflicts, trade wars and sanctions, disease/virus outbreaks and epidemics; recessions; taxation and international tax treaties; currency, interest rate and price fluctuations; and other conditions or events. In addition, an Underlying Portfolio’s adviser’s or subadviser’s assessment of companies held in the Underlying Portfolio may prove incorrect, resulting in losses or poor performance even in a rising market.
Indexing Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Indexing Risk. The Underlying Portfolios in which the Portfolio invests are managed to track the performance of an index. An Underlying Portfolio will not sell securities in its portfolio or buy different securities over the course of a year other than in conjunction with changes in its target index, even if there are adverse developments concerning a particular security, company or industry. As a result, the Portfolio may suffer losses that might not be experienced with an investment in an actively-managed mutual fund.
Fund of Funds Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Fund-of-Funds Risk. The costs of investing in the Portfolio, as a fund-of-funds, may be higher than the costs of investing in a mutual fund that invests most or all of its assets directly in individual securities. An Underlying Portfolio may change its investment objective or policies without the Portfolio’s approval, which could force the Portfolio to withdraw its investment from such Underlying Portfolio at a time that is unfavorable to the Portfolio. In addition, one Underlying Portfolio may buy the same securities that another Underlying Portfolio sells. Therefore, the Portfolio would indirectly bear the costs of these trades without accomplishing any investment purpose.
Underlying Portfolios Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Underlying Portfolios Risk. The risks of the Portfolio owning the Underlying Portfolios generally reflect the risks of owning the underlying securities held by the Underlying Portfolios. Disruptions in the markets for the securities held by the Underlying Portfolios could result in losses on the Portfolio’s investment in such securities. The Underlying Portfolios also have fees that increase their costs versus owning the underlying securities directly.
Affiliated Portfolio Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Affiliated Portfolio Risk. In managing the Portfolio, SunAmerica will have the authority to select and substitute the Underlying Portfolios. SunAmerica may be subject to potential conflicts of interest in allocating the Portfolio’s assets among the various Underlying Portfolios because the fees payable to it by some of the Underlying Portfolios are higher than the fees payable by other Underlying Portfolios and because SunAmerica also is responsible for managing and administering the Underlying Portfolios.
Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] If the value of the assets of the Portfolio goes down, you could lose money.
Risk Not Insured Depository Institution [Member]  
Prospectus [Line Items]  
Risk [Text Block] Shares of the Portfolio are not bank deposits and are not guaranteed or insured by any bank, government entity or the Federal Deposit Insurance Corporation.