S000045903 [Member] Investment Strategy - Multifactor International Equity Fund	Oct. 31, 2025
Prospectus [Line Items]
Strategy [Heading]	Investments, Risks and PerformancePrincipal Investment Strategies of the Fund
Strategy Narrative [Text Block]	The Fund has a non-fundamental policy to invest, under normal circumstances, at least 80% of the value of its net assets plus borrowings for investment purposes in equity securities. The Fund invests principally in equity securities, including common stocks issued by companies economically tied to or located in developed market countries, other than the U.S. and in depositary receipts representing shares in such companies. The Fund’s securities are denominated principally in foreign currencies and are typically held outside the U.S. The Fund may invest a portion of its assets in equity securities of companies that are economically tied to emerging market countries. The Fund considers the following countries to have developed markets: Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, Luxembourg, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the United Kingdom and the United States. As a general rule, the Fund considers emerging market countries to include every other country. The Fund invests principally in large and medium capitalization companies, but may also invest in small capitalization companies. The Fund defines large and medium capitalization companies as those companies represented by the MSCI World ex USA Index or with market capitalization within the capitalization range of the MSCI World ex USA Index. Equity securities in which the Fund invests include common stocks, preferred stocks, partnership interests, depositary receipts and equity-equivalent securities or instruments whose values are based on common stocks, such as futures contracts. Russell Investment Management, LLC (“RIM”) seeks to achieve the Fund’s investment objective by managing the Fund’s overall exposures (such as value, momentum, quality, capitalization size, lower volatility, growth, industry, sector, region, defensive or dynamic). The Fund’s exposures are monitored and analyzed relative to the MSCI World ex USA Index and RIM tilts the Fund’s exposures by over or underweighting any of the portfolio’s characteristics relative to the MSCI World ex USA Index over the short, intermediate or long term. RIM utilizes a variety of quantitative inputs and qualitative investment information and analysis in the management of the Fund to assess Fund characteristics and identify a portfolio which it believes will provide the desired exposures. After RIM has determined the Fund’s desired exposures, RIM identifies baskets of stocks and determines their weights within the Fund in order to reflect those desired exposures. These baskets are generally comprised of stocks included in the MSCI World ex USA Index but may include or be entirely comprised of stocks not included in the MSCI World ex USA Index. The baskets are derived from various indexes, quantitative tools and/or rules-based processes designed to achieve desired exposures. RIM may also invest in index futures, index put or call options, currency forwards or exchange traded funds as a substitute for the purchase of stocks to achieve desired exposures, in pursuit of the Fund’s investment objective or for hedging purposes. The Fund usually, but not always, pursues a strategy to be fully invested by exposing all or a portion of its cash to the performance of certain markets by purchasing equity securities and/or derivatives, which typically include index futures contracts and forward currency contracts. The Fund may invest in derivative instruments and may use derivatives to take both long and short positions. The Fund may at times seek to protect a portion of its investments against adverse currency exchange rate changes by purchasing forward currency contracts and may engage in currency transactions for speculative purposes. The Fund may also invest a portion of its assets in securities of companies, known as real estate investment trusts (“REITs”), that own and/or manage properties. Please refer to the “Investment Objective and Investment Strategies” section in the Fund's Prospectus for further information.

The Fund has a non-fundamental policy to invest, under normal circumstances, at least 80% of the value of its net assets plus borrowings for investment purposes in equity securities. The Fund invests principally in equity securities, including common stocks issued by companies economically tied to or located in developed market countries, other than the U.S. and in depositary receipts representing shares in such companies. The Fund’s securities are denominated principally in foreign currencies and are typically held outside the U.S. The Fund may invest a portion of its assets in equity securities of companies that are economically tied to emerging market countries. The Fund considers the following countries to have developed markets: Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, Luxembourg, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the United Kingdom and the United States. As a general rule, the Fund considers emerging market countries to include every other country. The Fund invests principally in large and medium capitalization companies, but may also invest in small capitalization companies. The Fund defines large and medium capitalization companies as those companies represented by the MSCI World ex USA Index or with market capitalization within the capitalization range of the MSCI World ex USA Index. Equity securities in which the Fund invests include common stocks, preferred stocks, partnership interests, depositary receipts and equity-equivalent securities or instruments whose values are based on common stocks, such as futures contracts.

Russell Investment Management, LLC (“RIM”) seeks to achieve the Fund’s investment objective by managing the Fund’s overall exposures (such as value, momentum, quality, capitalization size, lower volatility, growth, industry, sector, region, defensive or dynamic). The Fund’s exposures are monitored and analyzed relative to the MSCI World ex USA Index and RIM tilts the Fund’s exposures by over or underweighting any of the portfolio’s characteristics relative to the MSCI World ex USA Index over the short, intermediate or long term. RIM utilizes a variety of quantitative inputs and qualitative investment information and analysis in the management of the Fund to assess Fund characteristics and identify a portfolio which it believes will provide the desired exposures. After RIM has determined the Fund’s desired exposures, RIM identifies baskets of stocks and determines their weights within the Fund in order to reflect those desired exposures. These baskets are generally comprised of stocks included in the MSCI World ex USA Index but may include or be entirely comprised of stocks not included in the MSCI World ex USA Index. The baskets are derived from various indexes, quantitative tools and/or rules-based processes designed to achieve desired exposures. RIM may also invest in index futures, index put or call options, currency forwards or exchange traded funds as a substitute for the purchase of stocks to achieve desired exposures, in pursuit of the Fund’s investment objective or for hedging purposes. The Fund

The Fund may at times seek to protect a portion of its investments against adverse currency exchange rate changes by purchasing forward currency contracts and may engage in currency transactions for speculative purposes. The Fund may also invest a portion of its assets in securities of companies, known as real estate investment trusts (“REITs”), that own and/or manage properties. Please refer to the “Investment Objective and Investment Strategies” section in the Fund's Prospectus for further information.