Conservative Allocation Lifestyle Fund Investment Strategy - Conservative Allocation Lifestyle Fund	May 31, 2026
Prospectus [Line Items]
Strategy [Heading]	<span style="color:#000000;font-family:Arial;font-size:12pt;font-weight:bold;">Principal Investment Strategies of the Fund</span>
Strategy Narrative [Text Block]	As a fund-of-funds, the Fund’s principal investment strategy is to allocate assets among a combination of mutual funds (“Underlying Funds”) that, in turn, invest directly in a wide range of portfolio securities (like stocks and bonds). The Fund invests a larger portion of its assets in Underlying Funds that invest in securities that generate current income, and generally has a lower risk level than the Aggressive Allocation Lifestyle Fund and Moderate Allocation Lifestyle Fund. The Fund’s indirect holdings are primarily in fixed-income securities of domestic and foreign issuers and in equity securities of domestic companies. The Underlying Funds also invest, to a limited extent, in equity securities of foreign issuers, lower rated fixed-income securities (often referred to as “junk bonds”), and money market securities. Asset allocation is the most critical investment decision that you make as an investor. Selecting the appropriate combination should be based on your personal investment goals, time horizons and risk tolerance. The projected asset allocation ranges for the Fund are as follows:•Domestic Equity Funds10% - 40%•Fixed-Income Funds55% - 90%•International Equity Funds0% - 20%This Fund is managed so that it can serve as a complete investment program for you or as a core part of your larger portfolio. Although the Fund will generally maintain its assets within the allocations above, the Fund may hold cash or cash equivalents for various purposes, including for temporary defensive purposes. The Underlying Funds have been selected to represent a reasonable spectrum of investment options for the Fund. The subadviser has based the target investment percentages for the Fund on the degree to which it believes the Underlying Funds, in combination, to be appropriate for the Fund’s investment objective. The subadviser may change the asset allocation ranges from time to time. In selecting Underlying Funds, the subadviser may choose from other series of VALIC Company I and from unaffiliated money market funds that VALIC has designated available for investment for the Fund. The Underlying Funds include funds subadvised by the subadviser. Consistent with the Fund’s objective and strategies, the subadviser is permitted to invest in Underlying Funds it subadvises. When choosing among potential Underlying Funds, the subadviser faces a conflict of interest because it will receive additional fees when it selects Underlying Funds for which it also acts as subadviser. Please refer to the Fund’s Statement of Additional Information for more information on the subadviser’s conflicts of interest. The Underlying Funds in which the Fund invests may engage in active and frequent trading of portfolio securities in an effort to achieve their investment objectives.

Conservative Allocation Lifestyle Fund Investment Strategy - Conservative Allocation Lifestyle Fund

May 31, 2026

<span style="color:#000000;font-family:Arial;font-size:12pt;font-weight:bold;">Principal Investment Strategies of the Fund</span>

Strategy Narrative [Text Block]

As a fund-of-funds, the Fund’s principal investment strategy is to allocate assets among a combination of mutual funds (“Underlying Funds”) that, in turn, invest directly in a wide range of portfolio securities (like stocks and bonds). The Fund invests a larger portion of its assets in Underlying Funds that invest in securities that generate current income, and generally has a lower risk level than the Aggressive Allocation Lifestyle Fund and Moderate Allocation Lifestyle Fund. The Fund’s indirect holdings are primarily in fixed-income securities of domestic and foreign issuers and in equity securities of domestic companies. The Underlying Funds also invest, to a limited extent, in equity securities of foreign issuers, lower rated fixed-income securities (often referred to as “junk bonds”), and money market securities. Asset allocation is the most critical investment decision that you make as an investor. Selecting the appropriate combination should be based on your personal investment goals, time horizons and risk tolerance. The projected asset allocation ranges for the Fund are as follows:•Domestic Equity Funds10% - 40%•Fixed-Income Funds55% - 90%•International Equity Funds0% - 20%This Fund is managed so that it can serve as a complete investment program for you or as a core part of your larger portfolio. Although the Fund will generally maintain its assets within the allocations above, the Fund may hold cash or cash equivalents for various purposes, including for temporary defensive purposes. The Underlying Funds have been selected to represent a reasonable spectrum of investment options for the Fund. The subadviser has based the target investment percentages for the Fund on the degree to which it believes the Underlying Funds, in combination, to be appropriate for the Fund’s investment objective. The subadviser may change the asset allocation ranges from time to time. In selecting Underlying Funds, the subadviser may choose from other series of VALIC Company I and from unaffiliated money market funds that VALIC has designated available for investment for the Fund. The Underlying Funds include funds subadvised by the subadviser. Consistent with the Fund’s objective and strategies, the subadviser is permitted to invest in Underlying Funds it subadvises. When choosing among potential Underlying Funds, the subadviser faces a conflict of interest because it will receive additional fees when it selects Underlying Funds for which it also acts as subadviser. Please refer to the Fund’s Statement of Additional Information for more information on the subadviser’s conflicts of interest. The Underlying Funds in which the Fund invests may engage in active and frequent trading of portfolio securities in an effort to achieve their investment objectives.