S000001587 [Member] Investment Risks - Investment Grade Bond Fund |
Oct. 31, 2025 |
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| U S and Non U S Corporate Debt Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● U.S. and Non-U.S. Corporate Debt Securities Risk. Investments in U.S. and non-U.S. corporate debt securities are subject to interest rate risk and market risk and are affected by perceptions of the creditworthiness and business prospects of individual issuers. Non-U.S. corporate debt securities may expose the Fund to greater risk than investments in U.S. corporate debt securities. |
| Government Issued or Guaranteed Securities U S Government Securities [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Government Issued or Guaranteed Securities, U.S. Government Securities. Bonds issued or guaranteed by a government are subject to inflation risk, price depreciation risk and default risk. |
| Currency Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Currency Risk. Non-U.S. securities that trade in, and receive revenues in, non-U.S. currencies are subject to the risk that those currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency being hedged. As a result, investments in non-U.S. dollar-denominated securities and currencies may reduce the returns of the Fund. |
| Global Financial Markets Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Global Financial Markets Risk. Global financial markets are increasingly interconnected and conditions (including volatility and instability) and events (including natural disasters, pandemics and epidemics) in one country, region or financial market may adversely impact issuers in a different country, region or financial market. In addition, governmental and quasi-governmental organizations have taken a number of unprecedented actions designed to support the markets. Such events and conditions may adversely affect the value of the Fund’s securities, result in greater market or liquidity risk or cause difficulty valuing the Fund’s portfolio instruments or achieving the Fund’s objective. |
| Liquidity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Liquidity Risk. The market for certain investments may become illiquid or less liquid (i.e., there may be a significant reduction in trading activity, including in the number of market participants or transactions, in such investments) under adverse or volatile market or economic conditions, making those investments difficult to sell. The market price of certain investments may fall dramatically if there is no liquid trading market. For derivatives, this also includes the risk involving liquidity demands that derivatives can create to make payments of margin or settlement payments to counterparties. Such events and conditions may adversely affect the value of the Fund’s investments, result in greater market or liquidity risk or cause difficulty valuing the Fund’s portfolio instruments or achieving the Fund’s objective. |
| Illiquid Investments [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Illiquid Investments. An illiquid or less liquid investment may be difficult to sell quickly and at a fair price, which could cause the Fund to realize a loss on the investment if it was sold at a lower price than that at which it had been valued. |
| Active Management [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Active Management. Despite strategies designed to achieve the Fund’s investment objective, the value of investments will change with market conditions, and so will the value of any investment in the Fund and you could lose money. The securities selected for the portfolio may not perform as RIM or the Fund's money managers expect. Additionally, securities selected may cause the Fund to underperform relative to other funds with similar investment objectives and strategies. There is no guarantee that RIM will effectively assess the Fund's portfolio characteristics and it is possible that its judgments regarding the Fund's exposures may prove incorrect. In addition, actions taken to manage Fund exposures, including risk, may be ineffective and/or cause the Fund to underperform. |
| Multi Manager Approach [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Multi-Manager Approach. While the investment styles employed by the money managers are intended to be complementary, they may not in fact be complementary. A multi-manager approach could result in more exposure to certain types of securities and higher portfolio turnover. |
| Fundamental Investing Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Fundamental Investing Risk. A fundamental investment approach uses research and analysis of a variety of factors to create a forecast of company results, which is used to select securities. The process may result in an evaluation of a security’s value that may be incorrect or, if correct, may not be reflected by the market. Security or instrument selection using a fundamental investment approach may also cause the Fund to underperform other funds with similar investment objectives and investment strategies even in a rising market. |
| Quantitative Investing and Models [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Quantitative Investing and Models. Quantitative inputs and models use historical company, economic and/or industry data to evaluate prospective investments or to generate forecasts which could result in incorrect assessments of the specific portfolio characteristics or ineffective adjustments to the Fund’s exposures. Securities selected using quantitative analysis may perform differently than analysis of their historical trends would suggest. Inputs or models may be flawed or not work as anticipated and may cause the Fund to underperform other funds with similar investment objectives and strategies.
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| Derivatives [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Derivatives. Investments in a derivative instrument could lose more than the initial amount invested. Compared to conventional securities, derivatives can be more sensitive to changes in interest rates or to sudden fluctuations in market prices and thus the Fund’s losses may be greater if it invests in derivatives than if it invests only in conventional securities. The use of derivative instruments involves risks different from, and possibly greater than, the risks associated with investing directly in equity or fixed income securities, currencies or other instruments. Derivatives are generally subject to a number of risks such as leveraging risk, liquidity risk, market risk, credit risk, default risk, counterparty risk (the risk that the other party in an agreement will fail to perform its obligations), management risk, operational risk and legal risk. Certain of these risks do not apply to derivative instruments entered into for hedging or cash equitization, certain cleared derivative instruments, and written options contracts. Derivatives also involve the risk of mispricing or improper valuation and the risk that changes in the value of the derivative instrument may not correlate exactly with the change in the value of the underlying asset, rate or index. |
| Index Based Investing [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Index-Based Investing. Index-based strategies (including index replication which seeks to purchase the securities in an index or a blend of indexes and optimized index sampling which seeks to purchase a sampling of securities using optimization and risk models), which may be used to gain desired Fund exposures, may cause the Fund's returns to be lower than if the Fund employed a fundamental investment approach to security selection with respect to that portion of its portfolio. Additionally, index-based strategies are subject to “tracking error” risk, which is the risk that the performance of the portion of the Fund's portfolio utilizing an index-based strategy will differ from the performance of the index it seeks to track. |
| Mortgage Backed Securitiess [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Mortgage-Backed Securities. Mortgage-backed securities may be affected by, among other things, changes or perceived changes in interest rates, factors concerning the interests in and structure of the issuer or the originator of the mortgage, or the quality of the underlying assets. The underlying assets may default or decline in quality or value. |
| Asset Backed Securitiess [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Asset-Backed Securities. Payment of principal and interest on asset-backed securities may be largely dependent upon the cash flows generated by the assets backing the securities and asset-backed securities may not have the benefit of any security interest in the related assets. |
| Loans and Other Direct Indebtedness [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Loans and Other Direct Indebtedness. Loans and other direct indebtedness involve the risk that payment of principal, interest and other amounts due in connection with these investments may not be received. |
| Bank Obligations [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Bank Obligations. The banking industry may be particularly susceptible to certain economic factors such as interest rate changes, adverse developments in the real estate market, fiscal and monetary policy and general economic cycles. The banking industry may also be impacted by legal and regulatory developments. |
| Money Market Securities Including Commercial Paper [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Money Market Securities (Including Commercial Paper). Prices of money market securities generally rise and fall in response to interest rate changes. |
| Asset Backed Commercial Paper [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Asset-Backed Commercial Paper. Investment in asset-backed commercial paper is subject to the risk that insufficient proceeds from the projected cash flows of the contributed receivables are available to repay the commercial paper. |
| Repurchase Agreementss [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Repurchase Agreements. Repurchase agreements are subject to the risk that the sellers may not be able to pay the agreed-upon repurchase price on the repurchase date. |
| Yankee Bonds and Yankee CDs [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Yankee Bonds and Yankee CDs. Issuers of Yankee Bonds and Yankee CDs are not necessarily subject to the same regulatory requirements that apply to U.S. corporations and banks. |
| Variable and Floating Rate Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Variable and Floating Rate Securities Risk. Variable and floating rate securities generally are less sensitive to interest rate changes but may decline in value if their interest rates do not rise as much, or as quickly, as interest rates in general. |
| Counterparty Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Counterparty Risk. Counterparty risk is the risk that the other party or parties to an agreement or a participant to a transaction, such as a broker, might default on a contract or fail to perform by failing to pay amounts due or failing to fulfill the obligations of the contract or transaction. |
| Currency Trading Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Currency Trading Risk. Currency trading strategies may involve instruments that have volatile prices, are illiquid or less liquid or create economic leverage. Forward currency contracts are subject to the risk that, should forward prices increase, a loss will be incurred to the extent that the price of the currency agreed to be purchased exceeds the price of the currency agreed to be sold. |
| Impact of Large Redemptions Including Possible Fund Liquidation [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Impact of Large Redemptions (Including Possible Fund Liquidation). The Fund may be used as an investment by certain funds of funds and in asset allocation programs and may have a large percentage of its Shares owned by such funds or held in such programs. Large redemption activity could result in the Fund incurring additional costs and being forced to sell portfolio securities at a loss to meet redemptions. Large redemptions may also result in increased expense ratios, higher levels of realized capital gains or losses with respect to the Fund's portfolio securities, higher Fund cash levels, higher brokerage commissions and other transaction costs, among other negative consequences such as reduced liquidity in the Fund’s portfolio. As a result, large redemption activity could adversely affect the Fund’s ability to conduct its investment program which, in turn, could adversely impact the Fund’s performance or may result in the Fund no longer remaining at an economically viable size, in which case the Fund may cease operations. |
| Cyber Security and Other Operational Risks [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Cyber Security and Other Operational Risks. An investment in the Fund, like any fund, can involve operational risks. In addition, other disruptive events may adversely affect the Fund’s ability to conduct business. While the Fund seeks to minimize such risks and events through controls and oversight, including business continuity plans and risk management systems, there may still be events or failures that could cause losses to the Fund. In addition, the Fund may be susceptible to operational risks through breaches in cyber security. A cyber security breach may cause sensitive information (including relating to personally identifiable information of investors) to be lost, improperly accessed, used or disclosed. The Fund and its shareholders could be negatively impacted by such disruptive events or cyber security incidents. |
| Non U S and Emerging Markets Debt [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Non-U.S. and Emerging Markets Debt. The value of an investment in non-U.S. and emerging markets debt may be affected by political, economic or social conditions or foreign currency exchange rates. Prices of emerging markets debt can be severely affected not only by rising interest rates and adverse currency fluctuations, but also by the deterioration of credit quality or default by the issuer. Non-U.S. and emerging markets debt may also be subject to risk of loss because of more or less foreign government regulation, less public information and less stringent investor protections and disclosure standards. |
| Fixed Income Securitiess [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ● Fixed Income Securities. Prices of fixed income securities generally rise and fall in response to, among other things, interest rate changes. Volatility in interest rates and in fixed income markets may increase the risk that the Fund’s investments in fixed income securities could lose money. In addition, the Fund could lose money if the issuer or guarantor of a fixed income security or other issuer of credit support is unable or unwilling to make timely principal and/or interest payments, or to otherwise honor its obligations. Fixed income securities may be downgraded in credit rating or go into default.
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| Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | An investment in the Fund, like any investment, has risks. The value of the Fund fluctuates and you could lose money. |
| Risk Not Insured Depository Institution [Member] | |
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| Risk [Text Block] | An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
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