SA Franklin Systematic U.S. Large Cap Core Portfolio Investment Risks - SA Franklin Systematic U.S. Large Cap Core Portfolio	Dec. 31, 2025
Affiliated Fund Rebalancing Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Affiliated Fund Rebalancing Risk. The Portfolio may be an investment option for other mutual funds for which SunAmerica Asset Management, LLC (“SunAmerica”) serves as investment adviser that are managed as “funds of funds.” From time to time, the Portfolio may experience relatively large redemptions or investments due to the rebalancing of a fund of funds. In the event of such redemptions or investments, the Portfolio could be required to sell securities or to invest cash at a time when it is not advantageous to do so.
Equity Securities Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Equity Securities Risk. The Portfolio invests principally 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.
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.
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, 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.
Factor Based Investing Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Factor-Based Investing Risk. With respect to a strategy that uses a factor-based process, there can be no assurance that the multi-factor selection process employed by the subadviser will enhance performance. Exposure to investment style factors may detract from performance in some market environments, which may continue for prolonged periods.
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, the subadviser’s assessment of securities held in the Portfolio may prove incorrect, resulting in losses or poor performance even in a rising market.
Securities Selection Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Securities Selection Risk. A strategy used by the Portfolio, or individual securities selected by the subadviser, may fail to produce the intended return.
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.

SA Franklin Systematic U.S. Large Cap Core Portfolio Investment Risks - SA Franklin Systematic U.S. Large Cap Core Portfolio

Dec. 31, 2025

Affiliated Fund Rebalancing Risk. The Portfolio may be an investment option for other mutual funds for which SunAmerica Asset Management, LLC (“SunAmerica”) serves as investment adviser that are managed as “funds of funds.” From time to time, the Portfolio may experience relatively large redemptions or investments due to the rebalancing of a fund of funds. In the event of such redemptions or investments, the Portfolio could be required to sell securities or to invest cash at a time when it is not advantageous to do so.

Prospectus [Line Items]

Risk [Text Block]

Equity Securities Risk. The Portfolio invests principally 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.

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.

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, 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.

Factor Based Investing Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Factor-Based Investing Risk. With respect to a strategy that uses a factor-based process, there can be no assurance that the multi-factor selection process employed by the subadviser will enhance performance. Exposure to investment style factors may detract from performance in some market environments, which may continue for prolonged periods.

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, the subadviser’s assessment of securities held in the Portfolio may prove incorrect, resulting in losses or poor performance even in a rising market.

Securities Selection Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Securities Selection Risk. A strategy used by the Portfolio, or individual securities selected by the subadviser, may fail to produce the intended return.

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.