Guggenheim High Yield Fund Investment Risks - A C Inst P Shares [Member] - Guggenheim High Yield Fund |
Sep. 30, 2025 |
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| Asset Backed Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Asset-Backed Securities Risk—Investors in asset-backed securities, including residential mortgage-backed securities, commercial mortgage-backed securities and other structured finance investments (such as collateralized mortgage obligations), generally receive payments that are part interest and part return of principal. These payments may vary based on the rate at which the underlying borrowers pay off their loans. As a result, asset-backed securities are particularly subject to credit risk and borrower defaults on the obligations underlying the asset-backed security will result in losses. In addition, asset-backed securities are typically particularly sensitive to changes in interest rates, which can cause the prices of asset-backed securities to be increasingly volatile and adversely affect the Fund’s holdings of asset-backed securities. Some asset-backed securities, including mortgage-backed securities, may have structures that make their performance based on changes in interest rates and other factors difficult to predict, causing their prices to be volatile. Asset-backed securities are also particularly subject to market, liquidity, valuation, prepayment and extension risks, and are also subject to risk of impairment of the value of the underlying asset. Additional risks relating to investments in asset-backed securities may arise principally because of the type of asset-backed securities in which the Fund invests, with such risks primarily associated with the particular assets collateralizing the asset-backed securities, the structure of such asset-backed securities or the tranche or priority of the asset-backed security held by the Fund. |
| Collateralized Loan Obligations and Collateralized Debt Obligations Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Collateralized Loan Obligations and Collateralized Debt Obligations Risk—Collateralized loan obligations (“CLOs”) bear many of the same risks as other forms of asset-backed securities, including interest rate risk, credit risk and default risk. As they are backed primarily by commercial loans, CLOs also bear many of the same risks as investing in loans directly. However, in addition to the risks associated with investing in commercial loans, the complex structure and highly leveraged nature of a CLO poses additional risks, including, but not limited to: (i) the possibility that distributions from collateral securities will not be adequate to make interest or other payments; (ii) the quality of the collateral may decline in value or default; (iii) the Fund may invest in CLOs that are subordinate to other classes; and (iv) the complex structure of the CLO may not be fully understood at the time of investment and may produce disputes with the issuer or unexpected investment results. CLOs incur indebtedness by issuing classes or “tranches” that vary in risk and yield. CLOs may experience substantial losses attributable to loan defaults or trading losses. Such losses on the underlying assets are borne first by the holders of subordinate tranches, which may take the form of an equity interest. The Fund’s investments in CLOs may decrease in market value or income when the CLO’s assets experience loan defaults or credit impairment, losses that exceed the most subordinate tranches, or market anticipation of loan defaults and investor aversion to CLO securities as a class. Collateralized debt obligations (“CDOs”) are structured similarly to CLOs and bear many of the same risks as CLOs, including interest rate risk, credit risk and default risk. CDOs are subject to additional risks because they are backed by pools of assets other than commercial loans, including securities (such as other asset-backed securities), synthetic instruments or bonds, and may be highly leveraged. Like CLOs, losses incurred by a CDO are borne first by holders of the most subordinate tranches. Accordingly, the risks of CDOs depend largely on the type of underlying collateral and the tranche of CDOs in which the Fund invests. Moreover, CDOs that obtain their exposure through synthetic investments are exposed to risks associated with derivative instruments. The terms of many structured finance investments, including CLOs and CDOs, are tied to SOFR or other reference rates. These relatively new and developing rates may not match the reference rate applicable to the underlying assets related to these investments. These may adversely affect the Fund and its investments in CLOs and CDOs, including their value, volatility and liquidity. CLOs, CDOs and their underlying loan obligations are typically not registered for sale to the public and therefore are subject to certain restrictions on transfer and sale, potentially subjecting them to increased liquidity risk as compared to other types of investments. As a result, the proceeds from the sale of CLO securities may not be readily available to meet the Fund’s redemption or other obligations and the Fund may be unable to acquire or dispose of the securities at a price and time that are advantageous to the Fund. |
| Commercial Paper Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Commercial Paper Risk—The value of the Fund’s investment in commercial paper, which is an unsecured promissory note that generally has a maturity date between one and 270 days and is issued by a U.S. or foreign entity, is susceptible to changes in the issuer’s financial condition or credit quality. Investments in commercial paper are usually discounted from their value at maturity. Commercial paper can be fixed-rate or variable rate and can be adversely affected by changes in interest rates. |
| Convertible Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Convertible Securities Risk—Convertible securities may be subordinate to other securities. The total return for a convertible security depends, in part, upon the performance of the underlying security into which it can be converted. The value of convertible securities tends to decline as interest rates increase. Convertible securities generally offer lower interest or dividend yields than non-convertible securities of similar quality. Certain types of convertible securities may decline in value or lose their value entirely in the event that the issuer’s financial conditions become significantly impaired. |
| Counterparty Credit Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Counterparty Credit Risk—The Fund makes investments in financial instruments and over-the-counter (“OTC”)-traded derivatives involving counterparties to gain exposure to a particular group of securities, index, asset class or other reference asset without actually purchasing those securities or investments, to hedge a position, or for other investment purposes. Through these investments and related arrangements (e.g., prime brokerage or securities lending arrangements or derivatives transactions), the Fund is exposed to credit risks that the counterparty may be unwilling or unable to make timely payments or otherwise to meet its contractual obligations. If the counterparty becomes insolvent or defaults on (or otherwise becomes unable or unwilling to perform) its payment or other obligations to the Fund, the Fund may not receive the full amount that it is entitled to receive or may experience delays in recovering the collateral or other assets held by, or on behalf of, the counterparty. If this occurs, the value of your shares in the Fund will decrease. Counterparty credit risk also includes the related risk of having concentrated exposure to such a counterparty. |
| Credit Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Credit Risk—The Fund could lose money if the issuer or guarantor of a fixed-income or other debt instrument or a counterparty to a derivatives transaction or other transaction is unable or unwilling, or perceived by market participants, rating agencies, pricing services or otherwise to be unable or unwilling, to pay interest or repay principal on time, defaults or otherwise fails to meet its obligations. Actual or perceived changes in economic, social, public health, financial or political conditions in general or that affect a particular type of instrument, issuer, guarantor or counterparty can reduce the ability of the party to meet its obligations, which can affect the credit quality, liquidity and/or value of an instrument. The value of an instrument also may decline for reasons that relate directly to the issuer, guarantor or counterparty, such as management performance, financial leverage and reduced demand for goods and services or an actual or perceived change in financial condition or reputation. The issuer, guarantor or counterparty could also suffer a rapid decline in credit rating, which would adversely affect the value, price volatility and liquidity of the instrument. Credit ratings may not be an accurate assessment of liquidity or credit risk. |
| Currency Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Currency Risk—Indirect and direct exposure to foreign currencies subjects the Fund to the risk that those currencies will decline in value relative to the U.S. Dollar, which would cause a decline in the value of the holdings of the Fund. Currency rates in foreign countries may fluctuate significantly over short periods of time for a number of reasons, including changes in interest rates and the imposition of currency controls or other political, economic and tax developments in the U.S. or abroad. |
| Derivatives Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Derivatives Risk—Derivatives and other similar instruments (collectively referred to in this paragraph as “derivatives”) pose risks in addition to and greater than those associated with investing directly in securities, currencies or other investments, including risks relating to leverage, market conditions and market risk, imperfect correlations with underlying investments or the Fund’s other portfolio holdings, high price volatility, lack of availability, counterparty credit, illiquidity, valuation, operational and legal restrictions and risk. Their use is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in leverage, which may cause the Fund to be more volatile and riskier than if it had not been leveraged. The Fund's use of derivatives to obtain short exposure may result in greater volatility of the Fund's net asset value (“NAV”) per share. Changes in the value of a derivative may also create sudden margin delivery or settlement payment obligations for the Fund, which can materially affect the performance of the Fund and its liquidity and other risk profiles. If the Investment Manager is incorrect about its expectations of market conditions, the use of derivatives could also result in a loss, which in some cases may be unlimited. In addition, the Fund's use of derivatives (including written call options) may cause the Fund to realize higher amounts of short term capital gains (generally taxed at ordinary income tax rates) than if the Fund had not used such instruments. Some of the derivatives in which the Fund invests may be traded (and privately negotiated) in the OTC market. OTC derivatives are subject to heightened counterparty credit, legal, liquidity and valuation risks. Certain risks also are specific to the derivatives in which the Fund invests. |
| Forward Foreign Currency Exchange Contracts Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Forward Foreign Currency Exchange Contracts Risk—A forward foreign currency exchange contract is an OTC obligation to purchase or sell a specific currency at a future date at a price set at the time of the contract. Foreign currency transactions can be affected unpredictably by intervention (or the failure to intervene) by U.S. or foreign governments or central banks, or by currency controls or political developments. Such events may prevent or restrict the Fund’s ability to enter into foreign currency transactions, force the Fund to exit a foreign currency transaction at a disadvantageous time or price or result in penalties for the Fund, any of which may result in a loss to the Fund. A contract to sell a foreign currency would limit any potential gain that might be realized if the value of the currency increases. Suitable hedging transactions may not be available in all circumstances. Engaging in forward foreign currency exchange contracts will subject the Fund to counterparty credit risk and any failure to perform by a counterparty could result in a loss to the Fund. |
| Options Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Options Risk—Options and options on futures contracts give the holder of the option the right, but not the obligation, to buy (or to sell) a position in a security or in a contract to the writer of the option, at a certain price. Options are subject to correlation risk because there may be an imperfect correlation between the options and the markets for underlying instruments that could cause a given transaction to fail to achieve its objectives. The successful use of options depends on the Investment Manager’s ability to predict correctly future price fluctuations and the degree of correlation between the markets for options and the underlying instruments. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Investment Manager, thus limiting the ability to implement the Fund’s strategies. Options are also particularly subject to leverage risk and can be subject to liquidity risk. Additionally, the Fund’s strategy to invest in the Debt Overlay Basket and write call options on the Underlying Bond ETF is subject to additional risks, including, but not limited to, the risk of loss associated with the Underlying Bond ETF outperforming the Debt Overlay Basket because the Fund’s obligation under the options on the Underlying Bond ETF at expiration is determined by the market price of the shares of the Underlying Bond ETF. Moreover, the Fund’s potential gain in selling a call option on the Underlying Bond ETF is the premium received from the purchaser of the option; however, the Fund risks a loss equal to the entire exercise price of the option minus the call premium (although the extent of such loss could be offset by the performance of the Debt Overlay Basket). |
| Dollar Roll Transaction Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Dollar Roll Transaction Risk—The Fund may enter into dollar roll transactions, in which the Fund sells a mortgage-backed or other security for settlement on one date and buys back a substantially similar security for settlement at a later date. Dollar rolls involve a risk of loss if the market value of the securities that the Fund is committed to buy declines below the price of the securities the Fund has sold. |
| Equity Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Equity Securities Risk—Equity securities include common stocks and other equity and equity-related securities (and securities convertible into stocks). The prices of equity securities generally fluctuate more than those of fixed-income investments, may rise or fall rapidly or unpredictably, and may reflect real or perceived changes in the issuing company’s financial condition and changes in the overall market or economy. A decline in the value of equity securities held by the Fund will adversely affect the value of your investment in the Fund. Common stocks generally represent the riskiest investment in a company and dividend payments (if declared) to preferred stockholders generally rank junior to payments due to a company’s debtholders. The Fund may lose a substantial part, or even all, of its investment in a company’s stock. |
| Extension Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Extension Risk—Certain debt instruments, including mortgage- and other asset-backed securities, are subject to the risk that payments on principal may occur at a slower rate or later than expected. In this event, the expected maturity could lengthen and the Fund’s investment may sharply decrease in value and the Fund’s income from the investment may quickly decline. These types of instruments are particularly subject to extension risk, and offer less potential for gains, during periods of rising interest rates. In addition, the Fund may be delayed in its ability to reinvest income or proceeds from these instruments in potentially higher yielding investments, which would adversely affect the Fund. |
| Foreign Securities and Currency Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Foreign Securities and Currency Risk—Foreign securities carry unique, additional and heightened risks when compared to U.S. securities, including, but not limited to: currency fluctuations; adverse political (including geopolitical), social and economic developments; trade restrictions (including tariffs) or other government restrictions by the U.S. or other governments; unreliable, untimely or less publicly available information; less government supervision; reporting, accounting, and auditing standards that are not comparable to those in the United States; less liquidity and more volatility; limited legal recourse and higher transactional costs. |
| High Yield and Unrated Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | High Yield and Unrated Securities Risk—High yield, below investment grade and unrated high risk debt securities (which also may be known as “junk bonds”) are regarded as predominantly speculative by certain rating agencies with respect to the issuer’s continuing ability to meet principal and interest payments. These securities generally present additional risks compared to investment grade bonds and are typically less liquid, and therefore more difficult to value accurately and sell at an advantageous price or time, and present more credit and default risk, including risk of loss (which may be substantial or total loss) of income and principal, than investment grade bonds. The price of high yield securities tends to be subject to greater volatility due to issuer-specific factors, such as operating results and outlook, and to real or perceived adverse economic and competitive industry conditions. High yield securities may be issued by companies that are restructuring, are smaller and less credit worthy or are more highly leveraged or indebted than other companies or are financially distressed, and therefore they typically have more difficulty making scheduled payments of principal and interest than issuers of higher rated investments. Under unusual or adverse economic, market or political conditions, high yield securities may be particularly susceptible to default risk and increased default rates. In the event of default, the Fund may incur additional expenses to seek recovery or to negotiate new terms with a defaulting issuer. Based on its investment strategies, a significant portion of the Fund’s investments (directly or indirectly) can be comprised of high yield, below investment grade and unrated securities and thus particularly prone to the foregoing risks, which may result in losses to the Fund. |
| Interest Rate Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Interest Rate Risk—Fixed-income and other debt instruments are subject to the possibility that interest rates could change (or are expected to change). Changes in interest rates (or the expectation of such changes) can be difficult to forecast and may adversely affect the Fund’s investments in these instruments, such as the value or liquidity of, and income generated by, the investments. Interest rates may change as a result of a variety of factors, and the change may be sudden and significant, with unpredictable impacts on the financial markets and the Fund’s investments. Fixed-income and other debt instruments with longer durations are more sensitive to changes in interest rates and, thus, subject to more volatility than similar instruments with shorter durations. Generally, when interest rates increase, the values of previously issued fixed-income and other debt instruments decline, sometimes suddenly and significantly. When interest rates decrease, the values of fixed-income and other debt instruments generally rise. During periods of rising interest rates, because changes in interest rates on adjustable rate securities may lag behind changes in market rates, the value of such securities may decline until their interest rates reset to market rates. During periods of declining interest rates, because the interest rates on adjustable rate securities generally reset downward, their market value is unlikely to rise to the same extent as the value of comparable fixed rate securities. The Fund’s yield, returns and performance may be adversely affected by changing interest rates and the Fund's net asset value per share may be more volatile during changing interest rate environments. Changes in fiscal, economic, monetary and other policies or measures have in the past, and may in the future, cause or exacerbate the risks associated with changing interest rates. Changes in interest rates may also lead to an increase in Fund redemptions, which may result in high portfolio turnover costs and lower valuations, thereby adversely affecting the Fund’s performance. |
| Investment in Investment Vehicles Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Investment in Investment Vehicles Risk—The Fund may seek to obtain certain exposure through investments in other investment vehicles. Investing in other investment vehicles, including ETFs, closed-end funds, short-term funds advised by the Investment Manager and/or its affiliates and other mutual funds, subjects the Fund to those risks affecting the investment vehicle, including the possibility that the value of the underlying securities held by the investment vehicle could decrease or the portfolio becomes illiquid. Moreover, the Fund and its shareholders will incur its pro rata share of the underlying vehicles’ expenses, which will reduce the Fund’s performance. In addition, investments in an ETF or a listed closed-end fund are subject to, among other risks, the risk that the shares may trade at a discount or premium relative to the net asset value of the shares and the listing exchange may halt trading of the shares. |
| Investment in Loans Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Investment in Loans Risk—The Fund may invest in loans directly or indirectly through assignments or participations. Investments in loans, including loan syndicates and other direct lending opportunities, involve special types of risks, including credit risk, interest rate risk, counterparty risk, prepayment risk, risk of subordination to other creditors, extension risk and risk of insufficient or lack of protection under the federal securities law. Loans may offer a fixed or floating interest rate. Loans are often below investment grade and may be unrated. The Fund’s investments in loans can also be difficult to value accurately because of, among other factors, limited public information regarding the loan or the borrowers and may be more susceptible to liquidity risk than fixed-income instruments of similar credit quality and/or maturity. The Fund is also subject to the risk that the value of any collateral for the loan may be insufficient or unavailable to cover the borrower’s obligations should the borrower fail to make payments, become insolvent, or otherwise default. This risk is increased if the Fund’s loans are secured by a single asset. The Fund may also invest in loans that are not secured by collateral which typically present greater risks than collateralized loans. Transactions in loans are often subject to long settlement periods and often require consent from borrowers and/or an agent acting for the lenders, thus potentially limiting the ability of the Fund to invest sale proceeds in other investments and to use proceeds to meet its current redemption obligations. The Fund thus is subject to the risk of selling other investments at disadvantageous times or prices or taking other actions necessary to raise cash to meet its redemption obligations. Participations in loans may subject the Fund to the credit risk of both the borrower and the seller of the participation and may make enforcement of loan covenants, if any, more difficult for the Fund as legal action may have to go through the seller of the participation (or an agent acting on its behalf). Covenants contained in loan documentation are intended to protect lenders and investors by imposing certain restrictions and other limitations on a borrower’s and the credit group’s operations or assets and by providing certain information and consent rights to lenders. In addition to operational covenants, loans and other debt obligations often contain financial covenants, which require a borrower and the related credit group to satisfy certain financial tests at periodic intervals or to maintain compliance with certain financial metrics. The Fund invests in or is exposed to loans and other similar debt obligations that are sometimes referred to as “covenant-lite” loans or obligations, which generally are loans or other similar debt obligations that lack financial maintenance covenants or possess fewer or contingent financial maintenance covenants and other financial protections for lenders and investors. These “covenant-lite” loans or similar debt obligations are particularly subject to the risks associated with investments in loans as described above. |
| Investments by Investing Funds and Other Large Shareholders and Redemption Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Investments by Investing Funds and Other Large Shareholders and Redemption Risk—Shares of the Fund are offered as an investment to certain other investment companies (including those advised by the Investment Manager and its affiliates), large retirement plans and other large investors. The Fund is subject to the risk that a large investor (or that shareholders) will purchase or redeem a large percentage of Fund shares at any time. Such large investors may comprise a significant portion of the Fund's shareholders. Under certain circumstances, the Fund may also experience frequent shareholder transactions, including by large shareholders. For example, to meet large redemption requests, the Fund may have to hold large uninvested cash positions or sell a significant amount of investments to raise the cash needed to satisfy redemption requests at times when it would not otherwise do so or otherwise at disadvantageous times. In turn, the Fund’s performance may suffer, as the Fund may experience increased portfolio turnover and will incur higher transaction costs, realize gains or losses at inopportune times, lose money, hold a less liquid portfolio, or experience other adverse consequences. For example, the sale of portfolio securities will accelerate the realization of taxable capital gains or losses, and purchases or redemptions of a large number of Fund shares relative to the size of the Fund will have adverse tax consequences limiting the use of any capital loss carryforwards and certain other losses to offset any future realized capital gains. |
| Leverage Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Leverage Risk—The Fund’s use of leverage, through borrowings or instruments such as derivatives and reverse repurchase agreements, may cause the Fund to be more volatile and riskier and magnify the Fund's losses to an extent greater than if it had not been leveraged. The use of leverage may also increase the Fund’s sensitivity to various risks and interest rate environments. |
| Liquidity and Valuation Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Liquidity and Valuation Risk—It may be difficult for the Fund to purchase and sell particular investments to meet redemption requests or otherwise within a reasonable time at a fair price, or the price at which it has been valued by the Investment Manager for purposes of the Fund’s net asset value, causing the Fund to be less liquid and unable to realize what the Investment Manager believes should be the price of the investment. Valuation of portfolio investments may be difficult, such as during periods of market turmoil or reduced liquidity, and for investments that may, for example, trade infrequently or irregularly. In these and other circumstances, an investment may be valued using fair value methodologies, which are inherently subjective, reflect good faith judgments based on available information and may not accurately estimate the price at which the Fund could sell the investment at that time. Based on its investment strategies, a significant portion of the Fund's investments can be difficult to value and potentially less liquid and thus particularly prone to the foregoing risks. Liquidity and valuation risks are heightened in a changing interest rate or volatile environment, particularly for fixed-income and other debt instruments. |
| Management Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Management Risk—The Fund is actively managed, which means that investment decisions are made based on investment views. There is no guarantee that the investment views will produce the desired results or expected returns. As a result of these and other factors, the Fund may lose value or fail to meet its investment objective or underperform its benchmark index or funds with similar investment objectives and strategies. Furthermore, active and frequent trading that can accompany active management, also called “high turnover,” may have a negative impact on performance. Active and frequent trading may result in higher brokerage costs or mark-up charges and tax costs, which are ultimately passed on to shareholders of the Fund. Active and frequent trading may also result in adverse tax consequences. |
| Market Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Risk—The value of, or income generated by, the investments held by the Fund may fluctuate rapidly and unpredictably. These fluctuations may be frequent and significant. In addition, the Fund may incur losses as a result of various market and economic factors, such as those affecting (or perceived to affect) individual companies or issuers or particular industries, or from broader influences, such as general market conditions. In addition, responses to government actions or interventions as well as developments related to economic, political (including geopolitical), social, public health, market, extreme weather, natural or man-made disasters or other conditions or events may cause volatility in financial markets and reduced liquidity in equity, credit and/or debt markets, which could adversely impact the Fund and its investments and their value and performance. Under such conditions, the Fund may experience significant redemption activity by shareholders and could be forced to sell portfolio securities or other assets at unfavorable prices in an effort to generate sufficient cash to pay redeeming shareholders. Certain securities may be difficult to value under such conditions. The Fund's investments may perform poorly or underperform the general securities markets or other types of securities. |
| Preferred Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Preferred Securities Risk—A company’s preferred stock generally pays dividends only after the company makes required payments to holders of its bonds and other debt. For this reason, the value of preferred stock will usually react more strongly than bonds and other debt to actual or perceived changes in the company’s financial condition or prospects. |
| Prepayment Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Prepayment Risk—Certain debt instruments, including loans and mortgage- and other asset-backed securities, are subject to the risk that payments on principal may occur more quickly or earlier than expected. If this occurs, the Fund might be forced to forego future interest income on the principal repaid early and to reinvest income or proceeds at generally lower interest rates, thus reducing the Fund’s yield. These types of instruments are particularly subject to prepayment risk, and offer less potential for gains, during periods of declining interest rates. |
| Regulatory and Legal Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Regulatory and Legal Risk—U.S. and non-U.S. governmental agencies and other regulators regularly implement additional regulations (or amend regulations) and legislators pass new laws that affect the investments held by the Fund, the strategies used by the Fund or the level of regulation or taxation applying to the Fund, its investments or service providers. These developments impact the investment strategies, performance, costs and operations of the Fund or taxation of shareholders. |
| Repurchase Agreements and Reverse Repurchase Agreements Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Repurchase Agreements and Reverse Repurchase Agreements Risk—In the event of the insolvency of the counterparty to a repurchase agreement or reverse repurchase agreement, recovery of the repurchase price owed to the Fund or, in the case of a reverse repurchase agreement, the securities or other assets sold by the Fund, may be delayed. Because reverse repurchase agreements may be considered to be the practical equivalent of borrowing funds, they constitute a form of leverage. If the Fund reinvests the proceeds of a reverse repurchase agreement at a rate lower than the cost of the agreement, entering into the agreement will lower the Fund’s yield. |
| Restricted Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Restricted Securities Risk—Restricted securities, including those acquired through private placement transactions, generally cannot be sold to the public and may involve a high degree of business, financial and liquidity risk, which may result in substantial losses to the Fund. |
| Securities Lending Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Securities Lending Risk—Securities lending involves a risk that the borrower may fail to return the securities or deliver the proper amount of collateral, which may result in a loss to the Fund. In the event of bankruptcy of the borrower, the Fund could experience losses or delays in recovering the loaned securities. |
| Short Sale Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Short Sale Risk—Short selling a security involves selling a borrowed security with the expectation that the value of that security will decline so that the security may be purchased at a lower price when returning the borrowed security. The loss on a short sale, which, in some cases, may be theoretically unlimited, may be greater than the original value of the securities sold short because the price of the borrowed security may rise, thereby increasing the price at which the security must be purchased. Government actions also may affect the Fund’s ability to engage in short selling. |
| Sovereign Debt Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Sovereign Debt Risk—The debt securities issued by sovereign entities may decline as a result of default or other adverse credit event resulting from a sovereign debtor's unwillingness or inability to repay principal and pay interest in a timely manner, which may be affected by a variety of factors, including its cash flow situation, the extent of its reserves, the availability of sufficient foreign exchange on the date a payment is due, the relative size of the debt service burden to the economy as a whole, the sovereign debtor's policy toward international lenders, and the political constraints to which a sovereign debtor may be subject. Sovereign debt risk is greater for issuers in emerging markets than issuers in developed countries. |
| Special Situation Investments Securities in Default Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Special Situation Investments/Securities in Default Risk—Investments in the securities and debt of distressed issuers or issuers in default or distressed situations involve far greater risk than investing in issuers whose debt obligations are being met and whose debt trades at or close to its “par” or full value because the investments in the securities and debt of distressed issuers or issuers in default are highly speculative with respect to the issuer’s ability to make interest payments and/or to pay its principal obligations in full and/or on time. |
| U.S. Government Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | U.S. Government Securities Risk—U.S. government securities may or may not be backed by the full faith and credit of the U.S. government. U.S. government securities are subject to the risks associated with fixed-income and debt securities, particularly interest rate risk and credit risk. In addition, U.S. government securities not backed by the full faith and credit of the U.S. government involve credit risk that is greater than other types of U.S. government securities. |
| When Issued Forward Commitment and Delayed Delivery Transactions Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | When Issued, Forward Commitment and Delayed-Delivery Transactions Risk—When-issued, forward-commitment and delayed-delivery transactions involve a commitment to purchase or sell specific securities at a predetermined price or yield in which payment and delivery take place after the customary settlement period for that type of security. When purchasing securities pursuant to one of these transactions, payment for the securities is not required until the delivery date. However, the purchaser assumes the rights and risks of ownership, including the risks of price and yield fluctuations and the risk that the security will not be issued as anticipated. |
| Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | The value of an investment in the Fund will fluctuate and is subject to investment risks, which means investors could lose money, including all or part of their investment in the Fund. |
| Risk Not Insured Depository Institution [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | An investment in the Fund is not a bank deposit and is not insured or guaranteed by the FDIC or any governmental agency. |