Investment Strategy	Feb. 05, 2025
U.S. MANAGED VOLATILITY FUND - Class F Prospectus \| SIMT US MANAGED VOLATILITY FUND
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	Under normal circumstances, the U.S. Managed Volatility Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in securities of U.S. companies of all capitalization ranges. These securities may include common stocks, preferred stocks, exchange-traded funds (ETFs) and warrants. The Fund may also, to a lesser extent, invest in American Depositary Receipts (ADRs), real estate investment trusts (REITs) and securities of non-U.S. companies. The Fund uses a multi-manager approach, relying on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad U.S. equity markets, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the Russell 3000 Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry.
GLOBAL MANAGED VOLATILITY FUND - Class F Prospectus \| SIMT GLOBAL MANAGED VOLATILITY FUND
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	The Global Managed Volatility Fund will typically invest in securities of U.S. and foreign companies of all capitalization ranges. These securities may include common stocks, preferred stocks, warrants, depositary receipts, exchange-traded funds (ETFs) and real estate investment trusts (REITs). The Fund also may use futures contracts and forward contracts. Under normal circumstances, the Fund will invest in at least three countries outside of the U.S., but will typically invest much more broadly. It is expected that at least 40% of the Fund's assets will be invested in non-U.S. securities. The Fund will invest primarily in companies located in developed countries, but may also invest in companies located in emerging markets. The Fund uses a multi-manager approach, relying primarily on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). This approach is intended to manage the risk characteristics of the Fund. Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad global equity markets, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the MSCI World Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's country, sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that the Sub-Advisers believe will produce a less volatile return than the market over time. SIMC and each Sub-Adviser effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry. In managing the Fund's currency exposure from foreign securities, the Fund may buy and sell futures or forward contracts on currencies for hedging purposes.
TAX-MANAGED MANAGED VOLATILITY FUND - Class F Prospectus \| SIMT TAX-MANAGED MANAGED VOLATILITY FUND
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	The Tax-Managed Managed Volatility Fund will typically invest in securities of U.S. companies of all capitalization ranges. These securities may include common stocks, preferred stocks, warrants and exchange-traded funds (ETFs). The Fund may also, to a lesser extent, invest in American Depositary Receipts (ADRs), real estate investment trusts (REITs) and securities of non-U.S. companies. Although the Fund will be measured against the Russell 3000 Index, the Fund is expected to have significant sector and market capitalization deviations from the index given its focus on absolute risk as opposed to index relative risk. This could lead to significant performance deviations relative to the index over shorter-term periods. The Fund uses a multi-manager approach, relying on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment approaches to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad U.S. equity markets in a tax-efficient fashion, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the Russell 3000 Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry. This will tend to lead SIMC and the Fund's Sub-Advisers to construct portfolios with a low beta relative to the overall U.S. equity market. The Fund implements the investment recommendations of SIMC and the Sub-Advisers through the use of an overlay manager appointed by SIMC. Each such Sub-Adviser and SIMC provides a model portfolio to the overlay manager on an ongoing basis that represents that Sub-Adviser's or SIMC's recommendation as to the securities to be purchased, sold or retained by the Fund. The overlay manager then constructs a portfolio for the Fund that represents the aggregation of the model portfolios of the Sub-Advisers and SIMC, with the weighting of each such Sub-Adviser's model in the total portfolio determined by SIMC. Pursuant to direction from SIMC, the overlay manager has limited authority to vary from the models. For example, SIMC may direct the overlay manager to adjust the portfolio to implement SIMC's forward looking views regarding various portfolio characteristics or factors, or for risk management purposes. The overlay manager may also vary the portfolio implementation to seek trading efficiencies, loss harvesting, portfolio rebalancing or other portfolio construction objectives as directed by SIMC.
TAX-MANAGED INTERNATIONAL MANAGED VOLATILITY FUND - Class F Prospectus \| SIMT TAX-MANAGED INTERNATIONAL MANAGED VOLATILITY FUND
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	Under normal circumstances, the Tax-Managed International Managed Volatility Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in non-U.S. equity securities. These securities may include common stocks and real estate investment trusts (REITs) of all capitalization ranges. Under normal circumstances, the Fund will invest in securities of issuers that are located in at least three countries outside of the U.S., but will typically invest much more broadly. The Fund will invest primarily in companies located in developed countries. The Fund uses a multi-manager approach to investing, relying on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of the Fund's adviser (SIMC or the Adviser). This approach is intended to manage the risk characteristics of the Fund. Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return similar to that of the broad international developed equity markets (International Market) in a tax-sensitive manner, but with lower absolute volatility. Over the long-term, the Fund seeks to achieve a return similar to that of the MSCI EAFE Index (Index), but with a lower level of volatility. Over shorter periods of time, however, due to its focus on absolute risk, the portfolio's country, sector and market capitalization exposures will typically vary from the International Market and it may experience significant performance deviations from the International Market. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that primarily exhibit a more stable historical or predicted price and earnings behavior (i.e. absolute risk), but also take into consideration low correlation attributes and expected returns. Generally, the Fund is likely to underperform in a steeply rising International Market, but seeks to mitigate losses in a falling International Market. The Fund implements the investment recommendations of SIMC and the Sub-Advisers through the use of an overlay manager appointed by SIMC. Each such Sub-Adviser and SIMC provides a model portfolio to the overlay manager on an ongoing basis that represents that Sub-Adviser's or SIMC's recommendation as to the securities to be purchased, sold or retained by the Fund. The overlay manager then constructs a portfolio for the Fund that represents the aggregation of the model portfolios of the Sub-Advisers and SIMC, with the weighting of each Sub-Adviser's model in the total portfolio determined by SIMC. Pursuant to direction from SIMC, the overlay manager has limited authority to vary from the models, primarily for the purpose of tax management of the Fund's securities transactions. For example, SIMC may direct the overlay manager to adjust the portfolio to implement SIMC's forward looking views regarding various portfolio characteristics or factors, or for risk management purposes. The overlay manager seeks to manage the impact of taxes by, among other things, selling stocks with the highest tax cost first, opportunistically harvesting losses and deferring recognition of taxable gains, where possible. The Fund considers the security of an issuer to be "non-U.S." if the issuer is domiciled, incorporated, located and/or principally traded in a country other than the U.S. Developed market countries are those countries that are included in a developed markets index by a recognized index provider, or have similar developed characteristics, in each case determined at the time of purchase. The Fund may purchase shares of exchange-traded funds (ETFs) to gain exposure to a particular portion of the market while awaiting an opportunity to purchase securities or other instruments directly.
U.S. MANAGED VOLATILITY FUND - Class I Prospectus \| SIMT US MANAGED VOLATILITY FUND
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	Under normal circumstances, the U.S. Managed Volatility Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in securities of U.S. companies of all capitalization ranges. These securities may include common stocks, preferred stocks, exchange-traded funds (ETFs) and warrants. The Fund may also, to a lesser extent, invest in American Depositary Receipts (ADRs), real estate investment trusts (REITs) and securities of non-U.S. companies. The Fund uses a multi-manager approach, relying on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad U.S. equity markets, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the Russell 3000 Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry.
GLOBAL MANAGED VOLATILITY FUND - Class I Prospectus \| SIMT GLOBAL MANAGED VOLATILITY FUND
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	The Global Managed Volatility Fund will typically invest in securities of U.S. and foreign companies of all capitalization ranges. These securities may include common stocks, preferred stocks, warrants, depositary receipts, exchange-traded funds (ETFs) and real estate investment trusts (REITs). The Fund also may use futures contracts and forward contracts. Under normal circumstances, the Fund will invest in at least three countries outside of the U.S., but will typically invest much more broadly. It is expected that at least 40% of the Fund's assets will be invested in non-U.S. securities. The Fund will invest primarily in companies located in developed countries, but may also invest in companies located in emerging markets. The Fund uses a multi-manager approach, relying primarily on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). This approach is intended to manage the risk characteristics of the Fund. Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad global equity markets, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the MSCI World Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's country, sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that the Sub-Advisers believe will produce a less volatile return than the market over time. SIMC and each Sub-Adviser effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry. In managing the Fund's currency exposure from foreign securities, the Fund may buy and sell futures or forward contracts on currencies for hedging purposes.
U.S. MANAGED VOLATILITY FUND - Class Y Prospectus \| SIMT US MANAGED VOLATILITY FUND
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	Under normal circumstances, the U.S. Managed Volatility Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in securities of U.S. companies of all capitalization ranges. These securities may include common stocks, preferred stocks, exchange-traded funds (ETFs) and warrants. The Fund may also, to a lesser extent, invest in American Depositary Receipts (ADRs), real estate investment trusts (REITs) and securities of non-U.S. companies. The Fund uses a multi-manager approach, relying on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad U.S. equity markets, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the Russell 3000 Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry.
GLOBAL MANAGED VOLATILITY FUND - Class Y Prospectus \| SIMT GLOBAL MANAGED VOLATILITY FUND
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	The Global Managed Volatility Fund will typically invest in securities of U.S. and foreign companies of all capitalization ranges. These securities may include common stocks, preferred stocks, warrants, depositary receipts, exchange-traded funds (ETFs) and real estate investment trusts (REITs). The Fund also may use futures contracts and forward contracts. Under normal circumstances, the Fund will invest in at least three countries outside of the U.S., but will typically invest much more broadly. It is expected that at least 40% of the Fund's assets will be invested in non-U.S. securities. The Fund will invest primarily in companies located in developed countries, but may also invest in companies located in emerging markets. The Fund uses a multi-manager approach, relying primarily on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). This approach is intended to manage the risk characteristics of the Fund. Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad global equity markets, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the MSCI World Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's country, sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that the Sub-Advisers believe will produce a less volatile return than the market over time. SIMC and each Sub-Adviser effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry. In managing the Fund's currency exposure from foreign securities, the Fund may buy and sell futures or forward contracts on currencies for hedging purposes.
TAX-MANAGED MANAGED VOLATILITY FUND - Class Y Prospectus \| SIMT TAX-MANAGED MANAGED VOLATILITY FUND
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	The Tax-Managed Managed Volatility Fund will typically invest in securities of U.S. companies of all capitalization ranges. These securities may include common stocks, preferred stocks, warrants and exchange-traded funds (ETFs). The Fund may also, to a lesser extent, invest in American Depositary Receipts (ADRs), real estate investment trusts (REITs) and securities of non-U.S. companies. Although the Fund will be measured against the Russell 3000 Index, the Fund is expected to have significant sector and market capitalization deviations from the index given its focus on absolute risk as opposed to index relative risk. This could lead to significant performance deviations relative to the index over shorter-term periods. The Fund uses a multi-manager approach, relying on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment approaches to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad U.S. equity markets in a tax-efficient fashion, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the Russell 3000 Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry. This will tend to lead SIMC and the Fund's Sub-Advisers to construct portfolios with a low beta relative to the overall U.S. equity market. The Fund implements the investment recommendations of SIMC and the Sub-Advisers through the use of an overlay manager appointed by SIMC. Each such Sub-Adviser and SIMC provides a model portfolio to the overlay manager on an ongoing basis that represents that Sub-Adviser's or SIMC's recommendation as to the securities to be purchased, sold or retained by the Fund. The overlay manager then constructs a portfolio for the Fund that represents the aggregation of the model portfolios of the Sub-Advisers and SIMC, with the weighting of each such Sub-Adviser's model in the total portfolio determined by SIMC. Pursuant to direction from SIMC, the overlay manager has limited authority to vary from the models. For example, SIMC may direct the overlay manager to adjust the portfolio to implement SIMC's forward looking views regarding various portfolio characteristics or factors, or for risk management purposes. The overlay manager may also vary the portfolio implementation to seek trading efficiencies, loss harvesting, portfolio rebalancing or other portfolio construction objectives as directed by SIMC.
TAX-MANAGED INTERNATIONAL MANAGED VOLATILITY FUND - Class Y Prospectus \| SIMT TAX-MANAGED INTERNATIONAL MANAGED VOLATILITY FUND
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	Under normal circumstances, the Tax-Managed International Managed Volatility Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in non-U.S. equity securities. These securities may include common stocks and real estate investment trusts (REITs) of all capitalization ranges. Under normal circumstances, the Fund will invest in securities of issuers that are located in at least three countries outside of the U.S., but will typically invest much more broadly. The Fund will invest primarily in companies located in developed countries. The Fund uses a multi-manager approach to investing, relying on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of the Fund's adviser (SIMC or the Adviser). This approach is intended to manage the risk characteristics of the Fund. Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return similar to that of the broad international developed equity markets (International Market) in a tax-sensitive manner, but with lower absolute volatility. Over the long-term, the Fund seeks to achieve a return similar to that of the MSCI EAFE Index (Index), but with a lower level of volatility. Over shorter periods of time, however, due to its focus on absolute risk, the portfolio's country, sector and market capitalization exposures will typically vary from the International Market and it may experience significant performance deviations from the International Market. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that primarily exhibit a more stable historical or predicted price and earnings behavior (i.e. absolute risk), but also take into consideration low correlation attributes and expected returns. Generally, the Fund is likely to underperform in a steeply rising International Market, but seeks to mitigate losses in a falling International Market. The Fund implements the investment recommendations of SIMC and the Sub-Advisers through the use of an overlay manager appointed by SIMC. Each such Sub-Adviser and SIMC provides a model portfolio to the overlay manager on an ongoing basis that represents that Sub-Adviser's or SIMC's recommendation as to the securities to be purchased, sold or retained by the Fund. The overlay manager then constructs a portfolio for the Fund that represents the aggregation of the model portfolios of the Sub-Advisers and SIMC, with the weighting of each Sub-Adviser's model in the total portfolio determined by SIMC. Pursuant to direction from SIMC, the overlay manager has limited authority to vary from the models, primarily for the purpose of tax management of the Fund's securities transactions. For example, SIMC may direct the overlay manager to adjust the portfolio to implement SIMC's forward looking views regarding various portfolio characteristics or factors, or for risk management purposes. The overlay manager seeks to manage the impact of taxes by, among other things, selling stocks with the highest tax cost first, opportunistically harvesting losses and deferring recognition of taxable gains, where possible. The Fund considers the security of an issuer to be "non-U.S." if the issuer is domiciled, incorporated, located and/or principally traded in a country other than the U.S. Developed market countries are those countries that are included in a developed markets index by a recognized index provider, or have similar developed characteristics, in each case determined at the time of purchase. The Fund may purchase shares of exchange-traded funds (ETFs) to gain exposure to a particular portion of the market while awaiting an opportunity to purchase securities or other instruments directly.

Under normal circumstances, the U.S. Managed Volatility Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in securities of U.S. companies of all capitalization

ranges. These securities may include common stocks, preferred stocks, exchange-traded funds (ETFs) and warrants. The Fund may also, to a lesser extent, invest in American Depositary Receipts (ADRs), real estate investment trusts (REITs) and securities of non-U.S. companies.

The Fund uses a multi-manager approach, relying on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad U.S. equity markets, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the Russell 3000 Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry.

Prospectus [Line Items]

Strategy Narrative [Text Block]

The Global Managed Volatility Fund will typically invest in securities of U.S. and foreign companies of all capitalization ranges. These securities may include common stocks, preferred stocks, warrants, depositary receipts, exchange-traded funds (ETFs) and real estate investment trusts (REITs). The Fund also may use futures contracts and forward contracts.

Under normal circumstances, the Fund will invest in at least three countries outside of the U.S., but will typically invest much more broadly. It is expected that at least 40% of the Fund's assets will be invested in non-U.S. securities. The Fund will invest primarily in companies located in developed countries, but may also invest in companies located in emerging markets.

The Fund uses a multi-manager approach, relying primarily on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). This approach is intended to manage the risk characteristics of the Fund. Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad global equity markets, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the MSCI World Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's country, sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that the Sub-Advisers believe will produce a less volatile return than the market over time. SIMC and each Sub-Adviser effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry.

In managing the Fund's currency exposure from foreign securities, the Fund may buy and sell futures or forward contracts on currencies for hedging purposes.

Prospectus [Line Items]

Strategy Narrative [Text Block]

The Tax-Managed Managed Volatility Fund will typically invest in securities of U.S. companies of all capitalization ranges. These securities may include common stocks, preferred stocks, warrants and exchange-traded funds (ETFs). The Fund may also, to a lesser extent, invest in American Depositary Receipts (ADRs),

real estate investment trusts (REITs) and securities of non-U.S. companies. Although the Fund will be measured against the Russell 3000 Index, the Fund is expected to have significant sector and market capitalization deviations from the index given its focus on absolute risk as opposed to index relative risk. This could lead to significant performance deviations relative to the index over shorter-term periods.

The Fund uses a multi-manager approach, relying on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment approaches to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad U.S. equity markets in a tax-efficient fashion, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the Russell 3000 Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry. This will tend to lead SIMC and the Fund's Sub-Advisers to construct portfolios with a low beta relative to the overall U.S. equity market.

The Fund implements the investment recommendations of SIMC and the Sub-Advisers through the use of an overlay manager appointed by SIMC. Each such Sub-Adviser and SIMC provides a model portfolio to the overlay manager on an ongoing basis that represents that Sub-Adviser's or SIMC's recommendation as to the securities to be purchased, sold or retained by the Fund. The overlay manager then constructs a portfolio for the Fund that represents the aggregation of the model portfolios of the Sub-Advisers and SIMC, with the weighting of each such Sub-Adviser's model in the total portfolio determined by SIMC.

Pursuant to direction from SIMC, the overlay manager has limited authority to vary from the models. For example, SIMC may direct the overlay manager to adjust the portfolio to implement SIMC's forward looking views regarding various portfolio characteristics or factors, or for risk management purposes. The overlay manager may also vary the portfolio implementation to seek trading efficiencies, loss harvesting, portfolio rebalancing or other portfolio construction objectives as directed by SIMC.

Prospectus [Line Items]

Strategy Narrative [Text Block]

Under normal circumstances, the Tax-Managed International Managed Volatility Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in non-U.S. equity securities. These securities may include common stocks and real estate investment trusts (REITs) of all capitalization

ranges. Under normal circumstances, the Fund will invest in securities of issuers that are located in at least three countries outside of the U.S., but will typically invest much more broadly. The Fund will invest primarily in companies located in developed countries.

The Fund uses a multi-manager approach to investing, relying on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of the Fund's adviser (SIMC or the Adviser). This approach is intended to manage the risk characteristics of the Fund. Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC.

The Fund seeks to achieve an absolute return similar to that of the broad international developed equity markets (International Market) in a tax-sensitive manner, but with lower absolute volatility. Over the long-term, the Fund seeks to achieve a return similar to that of the MSCI EAFE Index (Index), but with a lower level of volatility. Over shorter periods of time, however, due to its focus on absolute risk, the portfolio's country, sector and market capitalization exposures will typically vary from the International Market and it may experience significant performance deviations from the International Market. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that primarily exhibit a more stable historical or predicted price and earnings behavior (i.e. absolute risk), but also take into consideration low correlation attributes and expected returns. Generally, the Fund is likely to underperform in a steeply rising International Market, but seeks to mitigate losses in a falling International Market.

The Fund implements the investment recommendations of SIMC and the Sub-Advisers through the use of an overlay manager appointed by SIMC. Each such Sub-Adviser and SIMC provides a model portfolio to the overlay manager on an ongoing basis that represents that Sub-Adviser's or SIMC's recommendation as to the securities to be purchased, sold or retained by the Fund. The overlay manager then constructs a portfolio for the Fund that represents the aggregation of the model portfolios of the Sub-Advisers and SIMC, with the weighting of each Sub-Adviser's model in the total portfolio determined by SIMC. Pursuant to direction from SIMC, the overlay manager has limited authority to vary from the models, primarily for the purpose of tax management of the Fund's securities transactions. For example, SIMC may direct the overlay manager to adjust the portfolio to implement SIMC's forward looking views regarding various portfolio characteristics or factors, or for risk management purposes. The overlay manager seeks to manage the impact of taxes by, among other things, selling stocks with the highest tax cost first, opportunistically harvesting losses and deferring recognition of taxable gains, where possible.

The Fund considers the security of an issuer to be "non-U.S." if the issuer is domiciled, incorporated, located and/or principally traded in a country other than the U.S. Developed market countries are those countries that are included in a developed markets index by a recognized index provider, or have similar developed characteristics, in each case determined at the time of purchase.

The Fund may purchase shares of exchange-traded funds (ETFs) to gain exposure to a particular portion of the market while awaiting an opportunity to purchase securities or other instruments directly.

Prospectus [Line Items]

Strategy Narrative [Text Block]

Under normal circumstances, the U.S. Managed Volatility Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in securities of U.S. companies of all capitalization

ranges. These securities may include common stocks, preferred stocks, exchange-traded funds (ETFs) and warrants. The Fund may also, to a lesser extent, invest in American Depositary Receipts (ADRs), real estate investment trusts (REITs) and securities of non-U.S. companies.

The Fund uses a multi-manager approach, relying on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad U.S. equity markets, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the Russell 3000 Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry.

Prospectus [Line Items]

Strategy Narrative [Text Block]

The Global Managed Volatility Fund will typically invest in securities of U.S. and foreign companies of all capitalization ranges. These securities may include common stocks, preferred stocks, warrants, depositary receipts, exchange-traded funds (ETFs) and real estate investment trusts (REITs). The Fund also may use futures contracts and forward contracts.

Under normal circumstances, the Fund will invest in at least three countries outside of the U.S., but will typically invest much more broadly. It is expected that at least 40% of the Fund's assets will be invested in non-U.S. securities. The Fund will invest primarily in companies located in developed countries, but may also invest in companies located in emerging markets.

The Fund uses a multi-manager approach, relying primarily on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). This approach is intended to manage the risk characteristics of the Fund. Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad global equity markets, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the MSCI World Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's country, sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that the Sub-Advisers believe will produce a less volatile return than the market over time. SIMC and each Sub-Adviser effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry.

In managing the Fund's currency exposure from foreign securities, the Fund may buy and sell futures or forward contracts on currencies for hedging purposes.

Prospectus [Line Items]

Strategy Narrative [Text Block]

Under normal circumstances, the U.S. Managed Volatility Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in securities of U.S. companies of all capitalization

ranges. These securities may include common stocks, preferred stocks, exchange-traded funds (ETFs) and warrants. The Fund may also, to a lesser extent, invest in American Depositary Receipts (ADRs), real estate investment trusts (REITs) and securities of non-U.S. companies.

The Fund uses a multi-manager approach, relying on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad U.S. equity markets, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the Russell 3000 Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry.

Prospectus [Line Items]

Strategy Narrative [Text Block]

The Global Managed Volatility Fund will typically invest in securities of U.S. and foreign companies of all capitalization ranges. These securities may include common stocks, preferred stocks, warrants, depositary receipts, exchange-traded funds (ETFs) and real estate investment trusts (REITs). The Fund also may use futures contracts and forward contracts.

Under normal circumstances, the Fund will invest in at least three countries outside of the U.S., but will typically invest much more broadly. It is expected that at least 40% of the Fund's assets will be invested in non-U.S. securities. The Fund will invest primarily in companies located in developed countries, but may also invest in companies located in emerging markets.

The Fund uses a multi-manager approach, relying primarily on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). This approach is intended to manage the risk characteristics of the Fund. Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad global equity markets, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the MSCI World Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's country, sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that the Sub-Advisers believe will produce a less volatile return than the market over time. SIMC and each Sub-Adviser effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry.

In managing the Fund's currency exposure from foreign securities, the Fund may buy and sell futures or forward contracts on currencies for hedging purposes.

Prospectus [Line Items]

Strategy Narrative [Text Block]

The Tax-Managed Managed Volatility Fund will typically invest in securities of U.S. companies of all capitalization ranges. These securities may include common stocks, preferred stocks, warrants and exchange-traded funds (ETFs). The Fund may also, to a lesser extent, invest in American Depositary Receipts (ADRs), real estate investment trusts (REITs) and securities of non-U.S. companies. Although the Fund will be measured against the Russell 3000 Index, the Fund is expected to have significant sector and market capitalization deviations from the index given its focus on absolute risk as opposed to index relative risk. This could lead to significant performance deviations relative to the index over shorter-term periods.

The Fund uses a multi-manager approach, relying on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment approaches to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC. The Fund seeks to achieve an absolute return of the broad U.S. equity markets in a tax-efficient fashion, but with a lower absolute volatility. Over the long term, the Fund seeks to achieve a return similar to that of the Russell 3000 Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that effectively weighs securities based on their total expected risk and return without regard to market capitalization and industry. This will tend to lead SIMC and the Fund's Sub-Advisers to construct portfolios with a low beta relative to the overall U.S. equity market.

The Fund implements the investment recommendations of SIMC and the Sub-Advisers through the use of an overlay manager appointed by SIMC. Each such Sub-Adviser and SIMC provides a model portfolio to the overlay manager on an ongoing basis that represents that Sub-Adviser's or SIMC's recommendation as to the securities to be purchased, sold or retained by the Fund. The overlay manager then constructs a portfolio for the Fund that represents the aggregation of the model portfolios of the Sub-Advisers and SIMC, with the weighting of each such Sub-Adviser's model in the total portfolio determined by SIMC.

Pursuant to direction from SIMC, the overlay manager has limited authority to vary from the models. For example, SIMC may direct the overlay manager to adjust the portfolio to implement SIMC's forward looking views regarding various portfolio characteristics or factors, or for risk management purposes. The overlay manager may also vary the portfolio implementation to seek trading efficiencies, loss harvesting, portfolio rebalancing or other portfolio construction objectives as directed by SIMC.

Prospectus [Line Items]

Strategy Narrative [Text Block]

Under normal circumstances, the Tax-Managed International Managed Volatility Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in non-U.S. equity

securities. These securities may include common stocks and real estate investment trusts (REITs) of all capitalization ranges. Under normal circumstances, the Fund will invest in securities of issuers that are located in at least three countries outside of the U.S., but will typically invest much more broadly. The Fund will invest primarily in companies located in developed countries.

The Fund uses a multi-manager approach to investing, relying on a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of the Fund's adviser (SIMC or the Adviser). This approach is intended to manage the risk characteristics of the Fund. Assets of the Fund not allocated to Sub-Advisers are managed directly by SIMC.

The Fund seeks to achieve an absolute return similar to that of the broad international developed equity markets (International Market) in a tax-sensitive manner, but with lower absolute volatility. Over the long-term, the Fund seeks to achieve a return similar to that of the MSCI EAFE Index (Index), but with a lower level of volatility. Over shorter periods of time, however, due to its focus on absolute risk, the portfolio's country, sector and market capitalization exposures will typically vary from the International Market and it may experience significant performance deviations from the International Market. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that primarily exhibit a more stable historical or predicted price and earnings behavior (i.e. absolute risk), but also take into consideration low correlation attributes and expected returns. Generally, the Fund is likely to underperform in a steeply rising International Market, but seeks to mitigate losses in a falling International Market.

The Fund implements the investment recommendations of SIMC and the Sub-Advisers through the use of an overlay manager appointed by SIMC. Each such Sub-Adviser and SIMC provides a model portfolio to the overlay manager on an ongoing basis that represents that Sub-Adviser's or SIMC's recommendation as to the securities to be purchased, sold or retained by the Fund. The overlay manager then constructs a portfolio for the Fund that represents the aggregation of the model portfolios of the Sub-Advisers and SIMC, with the weighting of each Sub-Adviser's model in the total portfolio determined by SIMC. Pursuant to direction from SIMC, the overlay manager has limited authority to vary from the models, primarily for the purpose of tax management of the Fund's securities transactions. For example, SIMC may direct the overlay manager to adjust the portfolio to implement SIMC's forward looking views regarding various portfolio characteristics or factors, or for risk management purposes. The overlay manager seeks to manage the impact of taxes by, among other things, selling stocks with the highest tax cost first, opportunistically harvesting losses and deferring recognition of taxable gains, where possible.

The Fund considers the security of an issuer to be "non-U.S." if the issuer is domiciled, incorporated, located and/or principally traded in a country other than the U.S. Developed market countries are those countries that are included in a developed markets index by a recognized index provider, or have similar developed characteristics, in each case determined at the time of purchase.

The Fund may purchase shares of exchange-traded funds (ETFs) to gain exposure to a particular portion of the market while awaiting an opportunity to purchase securities or other instruments directly.