XML 29 R14.htm IDEA: XBRL DOCUMENT v3.20.2
Label Element Value
Prospectus: rr_ProspectusTable  
Document Type dei_DocumentType 485BPOS
Document Period End Date dei_DocumentPeriodEndDate Mar. 31, 2020
Entity Registrant Name dei_EntityRegistrantName RYDEX DYNAMIC FUNDS
Central Index Key dei_EntityCentralIndexKey 0001092720
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate Jul. 29, 2020
Document Effective Date dei_DocumentEffectiveDate Aug. 01, 2020
Prospectus Date rr_ProspectusDate Aug. 01, 2020
Class H Prospectus | S&P 500 2X Strategy Fund  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading S&P 500® 2X STRATEGY FUND
Supplement [Text Block] ck0001092720_SupplementTextBlock
IMPORTANT INFORMATION ABOUT THE FUND
The S&P 500® 2x Strategy Fund (the “Fund”) is very different from most other mutual funds in that it seeks daily leveraged investment results.  As a result, the Fund may be riskier than alternatives that do not use leverage because the performance of an investment in the Fund is magnified.   

The effect of leverage on the Fund will generally cause the Fund’s performance to not match the performance of the Fund’s benchmark (as described below) over a period of time greater than a single trading day. This means that the return of the Fund for a period of longer than a single trading day will be the result of each day’s compounded returns over the period, which will very likely differ from twice the return of the Fund’s underlying index (as defined below) for that period. As a consequence, especially in periods of market volatility, the path or trend of the benchmark during the longer period may be at least as important to the Fund’s cumulative return for the longer period as the cumulative return of the benchmark for the relevant longer period.  Further, the return for investors who invest for a period longer than a single trading day will not be the product of the return of the Fund’s stated investment goal (i.e., 2x) and the cumulative performance of the benchmark. 

The Fund is not suitable for all investors.  The Fund should be utilized only by investors who (a) understand the risks associated with the use of leverage, (b) understand the consequences of seeking daily leveraged investment results, and (c) intend to actively monitor and manage their investments.  Investors who do not meet these criteria should not buy shares of the Fund. An investment in the Fund is not a complete investment program.

Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund seeks to provide investment results that match, before fees and expenses, the performance of a specific benchmark on a daily basis. The Fund’s current benchmark is 200% of the performance of the S&P 500® Index (the “underlying index”). The Fund does not seek to achieve its investment objective over a period of time greater than one day.
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES OF THE FUND
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold Class H shares of the Fund.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading PORTFOLIO TURNOVER
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Total Annual Fund Operating Expenses or the Example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 328% of the average value of its portfolio. The Fund’s portfolio turnover rate is calculated without regard to cash instruments and most derivatives. If such instruments were included, the Fund’s portfolio turnover rate might be significantly higher.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 328.00%
Expense Example [Heading] rr_ExpenseExampleHeading EXAMPLE
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund employs as its investment strategy a program of investing in the common stock of companies that are generally within the capitalization range of the underlying index and derivative instruments, which primarily consist of equity index swaps and swaps on exchange-traded funds ("ETFs"), futures contracts, and options on securities, futures contracts, and stock indices. While the Fund may write (sell) and purchase swaps, it expects primarily to purchase swaps. Swap agreements and futures and options contracts, if used properly, may enable the Fund to meet its objective by increasing the Fund’s exposure to the securities included in the underlying index or in the same proportion that those securities are represented in the Fund's benchmark. The Advisor attempts to consistently apply leverage to increase the Fund's exposure to 200% of the underlying index, and expects to rebalance the Fund's holdings daily to maintain such exposure. The Fund’s use of derivatives and the leveraged investment exposure created by such use are expected to be significant. Certain of the Fund’s derivatives investments may be traded in the over-the-counter (“OTC”) market. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus any borrowings for investment purposes, in financial instruments with economic characteristics that should perform similarly to the securities of companies in the underlying index.

The S&P 500® Index is a capitalization-weighted index composed of 500 common stocks, which are chosen by the Standard & Poor’s Corporation on a statistical basis, and which generally represent large-capitalization companies with capitalizations ranging from $2.7 billion to $1,577.4 billion as of June 30, 2020. To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time. While the Fund's sector exposure may vary over time, as of June 30, 2020, the Fund has significant exposure to the Communication Services Sector, Consumer Discretionary Sector, Consumer Staples Sector, Financials Sector, Health Care Sector, Industrials Sector, and Information Technology Sector, as each sector is defined by the Global Industry Classification Standard, a widely recognized industry classification methodology developed by MSCI, Inc. and Standard & Poor's Financial Services LLC.

On a day-to-day basis, the Fund may hold short-term U.S. government securities or cash equivalents. The Fund also may enter into repurchase agreements with counterparties that are deemed to present acceptable credit risks. In an effort to ensure that the Fund is fully invested on a day-to-day basis, the Fund may conduct any necessary trading activity at or just prior to the close of the U.S. financial markets. The Fund is non-diversified and, therefore, may invest a greater percentage of its assets in a particular issuer in comparison to a diversified fund.

Investments in derivative instruments, such as futures, options and swap agreements, have the economic effect of creating financial leverage in the Fund’s portfolio because such investments may give rise to losses that exceed the amount the Fund has invested in those instruments. Financial leverage will magnify, sometimes significantly, the Fund’s exposure to any increase or decrease in prices associated with a particular reference asset resulting in increased volatility in the value of the Fund’s portfolio. The value of the Fund’s portfolio is likely to experience greater volatility over short-term periods. While such financial leverage has the potential to produce greater gains, it also may result in greater losses, which in some cases may cause the Fund to liquidate other portfolio investments at a loss to comply with limits on leverage and asset segregation requirements imposed by the Investment Company Act of 1940 or to meet redemption requests.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time.
Risk [Heading] rr_RiskHeading PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money. In addition to this risk, the Fund is subject to the principal risks described below.

COMPOUNDING RISKIn addition to the correlation risks described under “Correlation Risk,” the Fund’s returns are subject to the effects of compounding, which generally will cause the Fund’s performance to not correlate to the performance of the benchmark over periods greater than a single day, before accounting for fees and fund expenses. Compounded returns are the result of reinvesting daily returns over periods greater than a single day. The Fund’s compounded returns for periods greater than a single day will be different than the performance of the benchmark over the same period. The effects of compounding on the performance of the Fund will be more pronounced when the underlying index experiences increased volatility, the greater the leverage employed in the Fund, and over longer holding periods.

Compounding affects the performance of all investments over time, but has a more significant effect on a leveraged index fund because the magnified changes in performance produced by the use of leverage lead to greater increases and decreases in the fund’s daily returns which are then compounded over time. The effects of compounding, therefore, have a more significant effect on the Fund because it seeks to match a multiple of the performance of the Fund’s underlying index on a daily basis.

Fund performance for periods greater than one day can be estimated given any set of assumptions for the following factors: (a) underlying index performance; (b) underlying index volatility; (c) financing rates associated with leverage; (d) other Fund expenses; (e) dividends or interest paid by companies in the underlying index; and (f) period of time. The table below illustrates the impact of two principal factors – volatility and index performance – on Fund performance. The table shows estimated Fund returns for a number of combinations of performance and volatility over a one-year period. Performance shown in the table assumes: (a) no dividends paid by the companies included in the underlying index; (b) no Fund expenses; and (c) a cost of leverage of zero percent. If Fund expenses, including the cost of leverage, were included, the Fund’s performance would be lower than shown.
 
Areas shaded lighter represent those scenarios where the Fund can be expected to return more than twice the performance of the underlying index; conversely, areas shaded darker represent those scenarios where the Fund can be expected to return less than twice the performance of the underlying index.
Index Performance
Annualized Volatility
1x
2x
10%
25%
50%
75%
100%
-60%
-120%
-84%
-85%
-88%
-91%
-94%
-50%
-100%
-75%
-77%
-81%
-86%
-91%
-40%
-80%
-65%
-66%
-72%
-80%
-87%
-30%
-60%
-52%
-54%
-62%
-72%
-82%
-20%
-40%
-37%
-41%
-49%
-64%
-78%
-10%
-20%
-20%
-24%
-37%
-55%
-71%
0%
0%
-1%
-5%
-22%
-43%
-65%
10%
20%
19%
14%
-5%
-31%
-58%
20%
40%
42%
36%
11%
-15%
-47%
30%
60%
67%
59%
32%
-3%
-38%
40%
80%
93%
84%
52%
11%
-28%
50%
100%
122%
111%
76%
28%
-20%
60%
120%
154%
140%
100%
44%
-10%

The underlying index’s annualized historical volatility rate for the five-year period ended June 30, 2020 is 14.76%. The underlying index’s highest one-year volatility rate during the five-year period is 21.88%. The underlying index’s annualized performance for the five-year period ended June 30, 2020 is 10.73%.

Historical underlying index volatility and performance are not indications of what the underlying index volatility and performance will be in the future. The table is intended to isolate the effects of the underlying index volatility and index performance on the return of the Fund, and underscore that the Fund is designed as a short-term trading vehicle for investors who intend to actively monitor and manage their portfolios.

CORRELATION RISK—A number of factors may affect the Fund’s ability to achieve a high degree of correlation with its benchmark, including instances in which the Fund does not hold or have exposure to each component security of the underlying index and the effect of compounding on the Fund’s returns, and there can be no guarantee that the Fund will achieve a high degree of correlation. Failure to achieve a high degree of correlation may prevent the Fund from achieving its investment objective. The Fund does not attempt to, and should not be expected to, provide returns which are a multiple of the returns of the underlying index for periods other than a single day. The risk of the Fund not achieving its daily investment objective will be more acute when the underlying index has an extreme one-day movement approaching 50%. In addition, as a result of compounding, the Fund’s performance for periods greater than a single day is likely to be either greater than or less than the performance of the underlying index times the stated multiple in the Fund’s investment objective, before accounting for Fund fees and expenses.

COUNTERPARTY CREDIT RISK—The Fund may invest in financial instruments involving counterparties that attempt to gain exposure to a particular group of securities, index or asset class without actually purchasing those securities or investments, or to hedge a position. The Fund’s use of such financial instruments, including swap agreements, involves risks that are different from those associated with ordinary portfolio securities transactions. For example, the Fund is exposed to the risk that the counterparty may be unwilling or unable to make timely payments to meet its contractual obligations or may fail to return holdings that are subject to the agreement with the counterparty. If the counterparty becomes bankrupt or defaults on its payment obligations to the Fund, the Fund may not receive the full amount that it is entitled to receive. If this occurs, the value of your shares in the Fund will decrease.

DERIVATIVES RISK—The Fund’s investments in derivatives may pose risks in addition to and greater than those associated with investing directly in securities or other investments, including risks relating to leverage, imperfect correlations with underlying investments or the Fund’s other portfolio holdings, high price volatility, lack of availability, counterparty credit, liquidity, valuation and legal restrictions. Their use is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. If the Advisor 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. Certain risks are specific to the derivatives in which the Fund invests.

SWAP AGREEMENTS RISK—Swap agreements are contracts among the Fund and a counterparty to exchange the return of the pre-determined underlying investment (such as the rate of return of the underlying index). Swap agreements may be negotiated bilaterally and traded OTC between two parties or, in some instances, must be transacted through a futures commission merchant and cleared through a clearinghouse that serves as a central counterparty. Risks associated with the use of swap agreements are different from those associated with ordinary portfolio securities transactions, due in part to the fact they could be considered illiquid and many swaps trade on the OTC market. Swaps are particularly subject to counterparty credit, correlation, valuation, liquidity and leveraging risks. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity, but central clearing does not make swap transactions risk-free.

FUTURES CONTRACTS RISK—Futures contracts are typically exchange-traded contracts that call for the future delivery of an asset at a certain price and date, or cash settlement of the terms of the contract. Risks of futures contracts may be caused by an imperfect correlation between movements in the price of the instruments and the price of the underlying securities. In addition, there is the risk that the Fund may not be able to enter into a closing transaction because of an illiquid market. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value ("NAV"). Futures also are subject to leverage risks and to liquidity risk.

OPTIONS CONTRACTS RISK—Options or options on futures contracts give the holder of the option the right to buy (or to sell) a position in a security or in a contract to the writer of the option, at a certain price. They are subject to correlation risk because there may be an imperfect correlation between the options and the securities markets that cause a given transaction to fail to achieve its objectives. The successful use of options depends on the Advisor’s ability to correctly predict future price fluctuations and the degree of correlation between the options and securities markets. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Options also are particularly subject to leverage risk and can be subject to liquidity risk.

EARLY CLOSING RISK—The Fund is subject to the risk that unanticipated early closings of securities exchanges and other financial markets may result in the Fund’s inability to buy or sell securities or other financial instruments on that day and may cause the Fund to incur substantial trading losses.

EQUITY RISK—The Fund is subject to the risk that the value of the equity securities and equity-based derivatives in the Fund’s portfolio will decline due to volatility in the equity market caused by general market and economic conditions, perceptions regarding particular industries represented in the equity market, or factors relating to specific companies to which the Fund has investment exposure.

INDUSTRY CONCENTRATION RISK—The Fund may concentrate (i.e., invest more than 25% of its net assets) its investments in a limited number of issuers conducting business in the same industry or group of related industries. To the extent the Fund does so, the Fund is more vulnerable to adverse market, economic, regulatory, political or other developments affecting that industry or group of related industries than a fund that invests its assets more broadly. The industries in which the underlying index components, and thus the Fund's assets, may be concentrated will vary as the composition of the underlying index changes over time.

INTEREST RATE RISK—The market value of fixed income investments and related financial instruments will change in response to interest rate changes. During periods of falling interest rates, the values of fixed income securities generally rise. Conversely, during periods of rising interest rates, the values of such securities generally decline. Securities with greater interest rate sensitivity and longer maturities generally are subject to greater fluctuations in value. The Fund may invest in variable and floating rate securities. Although these instruments are generally less sensitive to interest rate changes than fixed rate instruments, the value of floating rate and variable securities may decline if their interest rates do not rise as quickly, or as much, as general interest rates. Changes in government or central bank policy, including changes in tax policy or changes in a central bank’s implementation of specific policy goals, may have a substantial impact on interest rates, and could have an adverse effect on prices for fixed income securities and on the performance of the Fund. In particular, interest rates in the U.S. are at or near historically low levels and as a result, fixed income securities markets may experience heightened levels of interest rate risk. Any unexpected or sudden reversal of the fiscal policy underlying current interest rate levels could adversely affect the value of the Fund. There can be no guarantee that any particular government or central bank policy will be continued, discontinued or changed, nor that any such policy will have the desired effect on interest rates.

LARGE-CAPITALIZATION SECURITIES RISK—The Fund is subject to the risk that large-capitalization stocks may underperform other segments of the equity market or the equity market as a whole. Larger, more established companies may be unable to respond quickly to new competitive challenges such as changes in technology and may not be able to attain the high growth rate of smaller companies, especially during extended periods of economic expansion.

LEVERAGING RISK—The Fund achieves leveraged exposure to the underlying index through the use of derivative instruments.  The more the Fund invests in leveraged instruments, the more this leverage will magnify any losses on those investments. The Fund’s investment in these instruments generally requires a small investment relative to the amount of investment exposure assumed.  As a result, such investments may give rise to losses that exceed the amount invested in those instruments. Since the Fund’s investment strategy involves consistently applied leverage, the value of the Fund’s shares will tend to increase or decrease more than the value of any increase or decrease in the underlying index. Leverage also will have the effect of magnifying tracking error.

LIQUIDITY AND VALUATION RISK—In certain circumstances, it may be difficult for the Fund to purchase and sell a particular investment within a reasonable time at a fair price, or the price at which it has been valued by the Advisor for purposes of the Fund's NAV, causing the Fund to be less liquid. While the Fund intends to invest in liquid securities and financial instruments, under certain market conditions, such as when trading in a particular investment has been halted temporarily by an exchange because the maximum price change of that investment has been realized, it may be difficult or impossible for the Fund to liquidate such investments. In addition, the ability of the Fund to assign an accurate daily value to certain investments may be difficult, and the Advisor may be required to fair value the investments.

MARKET RISK—The market value of the securities and derivatives held by the Fund may fluctuate over time in response to factors affecting individual companies or other factors such as changing economic, political or financial markets.

NON-DIVERSIFICATION RISK—The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).

OTC TRADING RISK—Certain of the derivatives in which the Fund may invest may be traded (and privately negotiated) in the OTC market. While the OTC derivatives market is the primary trading venue for many derivatives, it is largely unregulated and provides for less transparency than a national securities or commodities exchange. As a result and similar to other privately negotiated contracts, the Fund is subject to counterparty credit risk with respect to such derivatives contracts.

PASSIVE INVESTMENT RISK—The Fund is not actively managed and the Advisor does not attempt to take defensive positions in declining markets. Therefore, the Fund may be subject to greater losses in a declining market than a fund that is actively managed.

PORTFOLIO TURNOVER RISK—Periodic rebalancing of the Fund's holdings pursuant to its daily investment objective may lead to a greater number of portfolio transactions in the Fund than experienced by other mutual funds. Such frequent and active trading may lead to significantly higher transaction costs because of increased broker commissions associated with such transactions.

REAL ESTATE INVESTMENT TRUST ("REIT") RISK—REITs are securities that invest substantially all of their assets in real estate, trade like stocks and may qualify for special tax considerations. Investments in REITs subject the Fund to risks associated with the direct ownership of real estate. Market conditions or events affecting the overall real estate and REIT markets, such as declining property values or rising interest rates, could have a negative impact on the real estate market and the value of REITs in general. REITs may be affected by changes in the value of the underlying property owned by the trusts, economic downturns which may have a material effect on the real estate in which the REITs invest and their underlying portfolio securities. Further, REITs are dependent upon specialized management skills and may have their investments in relatively few properties, or in a small geographic area or a single property type. Failure of a company to qualify as a REIT under federal tax law may have adverse consequences to the Fund. In addition, REITs have their own expenses, and the Fund will bear a proportionate share of those expenses.

REGULATORY AND LEGAL RISK—U.S. and non-U.S. governmental agencies and other regulators regularly implement additional 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 (such as regulations related to investments in derivatives and other transactions). These regulations and laws impact the investment strategies, performance, costs and operations of the Fund or taxation of shareholders.

REPURCHASE AGREEMENT RISK—The Fund’s investment in repurchase agreements may be subject to market and credit risk with respect to the collateral securing the repurchase agreements. Investments in repurchase agreements also may be subject to the risk that the market value of the underlying obligations may decline prior to the expiration of the repurchase agreement term.

SECTOR RISK—The Fund is subject to the Sector Risks described below.

Communication Services Sector Risk. The Fund's investments are exposed to issuers conducting business in the Communication Services Sector. The Communication Services Sector includes companies that facilitate communication and offer related content and information through various mediums. It includes telecom and media & entertainment companies including producers of interactive gaming products and companies engaged in content and information creation or distribution through proprietary platforms. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Communication Services Sector. The performance of companies operating in the Communication Services Sector has historically been closely tied to the performance of the overall economy, and also is affected by economic growth, consumer confidence, attitudes and spending. Increased sensitivity to short product cycles and aggressive pricing, challenges in bringing products to market and changes in demographics and consumer tastes also can affect the demand for, and success of, communication services products and services in the marketplace.

Consumer Discretionary Sector Risk. The Fund’s investments are exposed to issuers conducting business in the Consumer Discretionary Sector. The manufacturing segment of the Consumer Discretionary Sector includes automotive, household durable goods, leisure equipment and textiles and apparel. The services segment includes hotels, restaurants and other leisure facilities, media production and services, and consumer retailing and services. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Consumer Discretionary Sector.  The performance of companies operating in the Consumer Discretionary Sector has historically been closely tied to the performance of the overall economy, and also is affected by economic growth, consumer confidence, attitudes and spending. Changes in demographics and consumer tastes also can affect the demand for, and success of, consumer products and services in the marketplace. Moreover, the Consumer Discretionary Sector encompasses those businesses that tend to be the most sensitive to economic cycles.

Consumer Staples Sector Risk. The Fund’s investments are exposed to issuers conducting business in the Consumer Staples Sector. The Consumer Staples Sector includes manufacturers and distributors of food, beverages and tobacco and producers of non-durable household goods and personal products. It also includes food and drug retailing companies as well as hypermarkets and consumer super centers. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Consumer Staples Sector. The performance of companies operating in the Consumer Staples Sector has historically been closely tied to the performance of the overall economy, and also is affected by consumer confidence, demands and preferences, and spending. In addition, companies in the Consumer Staples Sector may be subject to risks pertaining to the supply of, demand for, and prices of raw materials.

Financials Sector Risk. The Fund's investments are exposed to issuers conducting business in the Financials Sector. The Financials Sector includes companies involved in banking, thrifts and mortgage finance, specialized finance, consumer finance, asset management and custody banks, investment banking and brokerage, and insurance. It also includes the Financial Exchanges & Data and Mortgage Real Estate Investment Trusts (REITs) sub-industries. Certain Financials Sector issuers serve as counterparties with which the Fund may enter into derivatives agreements or other similar contractual arrangements. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Financials Sector, which may adversely affect a company's ability to fulfill its obligations as a financial counterparty. Companies operating in the Financials Sector are subject to extensive government regulation, which may limit the financial commitments they can make and the interest rates and fees they can charge. Profitability is largely dependent on the availability and cost of capital funds, and may fluctuate significantly when interest rates change or due to increased competition.

Health Care Sector Risk.  The Fund's investments are exposed to issuers conducting business in the Health Care Sector. The Health Care Sector includes health care providers and services, companies that manufacture and distribute health care equipment and supplies, and health care technology companies. It also includes companies involved in the research, development, production and marketing of pharmaceuticals and biotechnology products. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Health Care Sector. The prices of the securities of companies operating in the Health Care Sector are closely tied to government regulation and approval of their products and services, which can have a significant effect on the price and availability of those products and services.

Industrials Sector Risk. The Fund's investments are exposed to issuers conducting business in the Industrials Sector. The Industrials Sector includes manufacturers and distributors of capital goods such as aerospace and defense, building projects, electrical equipment and machinery, and companies that offer construction and engineering services. It also includes providers of commercial and professional services including printing, environmental and facilities services, office services and supplies, security and alarm services, human resource and employment services, and research and consulting services. It also includes companies that provide transportation services. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Industrials Sector. The prices of the securities of companies operating in the Industrials Sector may fluctuate due to the level and volatility of commodity prices, the exchange value of the dollar, import controls, worldwide competition, liability for environmental damage, depletion of resources, and mandated expenditures for safety and pollution control devices.

Information Technology Sector Risk. The Fund's investments are exposed to issuers conducting business in the Information Technology Sector. The Information Technology Sector includes companies that offer software and information technology services, manufacturers and distributors of technology hardware and equipment such as communications equipment, cellular phones, computers and peripherals, electronic equipment and related instruments and semiconductors. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Information Technology Sector. The prices of the securities of companies operating in the Information Technology Sector are closely tied to market competition, increased sensitivity to short product cycles and aggressive pricing, and problems with bringing products to market.

SHAREHOLDER TRADING RISK—The Fund may be used as a tool for certain investors that employ trading strategies involving frequent trading. Such trading strategies may lead to increased portfolio turnover in the Fund, higher transaction costs, and the possibility of increased short-term capital gains (which will be taxable to shareholders as ordinary income when distributed to them) and/or long-term capital gains. Large movements of assets into and out of the Fund due to active or frequent trading also may adversely affect the Fund's ability to achieve its investment objective.

TEMPORARY DEFENSIVE INVESTMENT RISK—The Advisor generally does not attempt to take defensive positions in the Fund in declining markets. Therefore, the Fund may be subject to greater losses in a declining market than a fund that does take defensive positions in declining markets.

TRACKING ERROR RISK—The Advisor may not be able to cause the Fund’s performance to match that of the Fund’s benchmark, either on a daily or aggregate basis. Factors such as Fund expenses, imperfect correlation between the Fund’s investments and those of the underlying index, rounding of share prices, changes to the composition of the underlying index, regulatory policies, high portfolio turnover rate, and the use of leverage all contribute to tracking error. Tracking error may cause the Fund’s performance to be less than you expect.

TRADING HALT RISK—The Fund typically will hold futures contracts and short-term options. The major exchanges on which these contracts are traded, such as the Chicago Mercantile Exchange, have established limits on how much the trading price of a futures contract or option may decline over various time periods within a day, and may halt trading in a contract that exceeds such limits. If a trading halt occurs, the Fund may temporarily be unable to purchase or sell certain securities, futures contracts or options. Such a trading halt near the time the Fund prices its shares may limit the Fund’s ability to use leverage and fully invest its assets, which could increase tracking error and adversely affect performance, and may prevent the Fund from achieving its investment objective.

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. The value of U.S. government securities will fluctuate and such securities are subject to the risks associated with fixed-income and debt securities, particularly interest rate and credit risk.
Risk Lose Money [Text] rr_RiskLoseMoney As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund. The following table shows the performance of the Class H shares of the Fund as an average over different periods of time in comparison to the performance of a broad-based market index. The figures in the bar chart and table assume the reinvestment of dividends and capital gains distributions. Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Updated performance information is available on the Fund’s website at www.guggenheiminvestments.com or by calling 800.820.0888.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800.820.0888
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.guggenheiminvestments.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.
Bar Chart Narrative [Text Block] rr_BarChartNarrativeTextBlock
The performance information shown below for Class H shares is based on a calendar year. The year-to-date return for the period from January 1, 2020 through June 30, 2020 is -17.14%.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarter Return
 
Lowest Quarter Return
 
Q1 2019
27.07%
 
Q3 2011
-28.55
 %
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURN (for periods ended December 31, 2019)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock
The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Class H Prospectus | S&P 500 2X Strategy Fund | S&P 500 Index  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses or taxes)
Label rr_AverageAnnualReturnLabel S&P 500® Index (reflects no deduction for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 31.49%
5 Years rr_AverageAnnualReturnYear05 11.70%
10 Years rr_AverageAnnualReturnYear10 13.56%
Class H Prospectus | S&P 500 2X Strategy Fund | Class H  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol RYTNX
Shareholder Fee, Other rr_ShareholderFeeOther none
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.90%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.69% [1]
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 1.84%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 187
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 579
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 995
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,159
Annual Return 2010 rr_AnnualReturn2010 23.97%
Annual Return 2011 rr_AnnualReturn2011 (4.21%)
Annual Return 2012 rr_AnnualReturn2012 29.05%
Annual Return 2013 rr_AnnualReturn2013 68.90%
Annual Return 2014 rr_AnnualReturn2014 24.64%
Annual Return 2015 rr_AnnualReturn2015 (2.03%)
Annual Return 2016 rr_AnnualReturn2016 19.77%
Annual Return 2017 rr_AnnualReturn2017 43.01%
Annual Return 2018 rr_AnnualReturn2018 (15.06%)
Annual Return 2019 rr_AnnualReturn2019 62.29%
Year to Date Return, Label rr_YearToDateReturnLabel year-to-date return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2020
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn (17.14%)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarter Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Mar. 31, 2019
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 27.07%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarter Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (28.55%)
Label rr_AverageAnnualReturnLabel Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 62.29%
5 Years rr_AverageAnnualReturnYear05 18.26%
10 Years rr_AverageAnnualReturnYear10 22.26%
Class H Prospectus | S&P 500 2X Strategy Fund | Class H | After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions
1 Year rr_AverageAnnualReturnYear01 61.07%
5 Years rr_AverageAnnualReturnYear05 17.35%
10 Years rr_AverageAnnualReturnYear10 21.67%
Class H Prospectus | S&P 500 2X Strategy Fund | Class H | After Taxes on Distributions and Sales  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions and Sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 36.86%
5 Years rr_AverageAnnualReturnYear05 14.34%
10 Years rr_AverageAnnualReturnYear10 19.07%
Class H Prospectus | INVERSE S&P 500 2X STRATEGY FUND  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading INVERSE S&P 500® 2X STRATEGY FUND
Supplement [Text Block] ck0001092720_SupplementTextBlock
IMPORTANT INFORMATION ABOUT THE FUND
The Inverse S&P 500® 2x Strategy Fund (the “Fund”) is very different from most other mutual funds in that it seeks to provide leveraged investment results that match twice the inverse of the performance of a specific underlying index on a daily basis, a result opposite of most mutual funds. As a result, the Fund may be riskier than alternatives that do not use leverage because the performance of an investment in the Fund is magnified.

The effect of leverage on the Fund will generally cause the Fund’s performance to not match the performance of the Fund’s benchmark (as described below) over a period of time greater than a single trading day. This means that the return of the Fund for a period of longer than a single trading day will be the result of each day’s compounded returns over the period, which will very likely differ from twice the inverse return of the Fund’s underlying index (as defined below) for that period. As a consequence, especially in periods of market volatility, the path or trend of the benchmark during the longer period may be at least as important to the Fund’s cumulative return for the longer period as the cumulative return of the benchmark for the relevant longer period. Further, the return for investors who invest for a period longer than a single trading day will not be the product of the return of the Fund’s stated investment goal (i.e., -2x) and the cumulative performance of the benchmark.

The Fund is not suitable for all investors. The Fund should be utilized only by investors who (a) understand the risks associated with the use of leverage, (b) understand the consequences of seeking daily leveraged investment results, (c) understand the risks of shorting and (d) intend to actively monitor and manage their investments. Investors who do not meet these criteria should not buy shares of the Fund. An investment in the Fund is not a complete investment program.
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund seeks to provide investment results that match, before fees and expenses, the performance of a specific benchmark on a daily basis. The Fund’s current benchmark is 200% of the inverse (opposite) of the performance of the S&P 500® Index (the “underlying index”). The Fund does not seek to achieve its investment objective over a period of time greater than one day.
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES OF THE FUND
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold Class H shares of the Fund.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading PORTFOLIO TURNOVER
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Total Annual Fund Operating Expenses or the Example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 0% of the average value of its portfolio. The Fund’s portfolio turnover rate is calculated without regard to cash instruments and most derivatives. If such instruments were included, the Fund’s portfolio turnover rate might be significantly higher.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate none
Expense Example [Heading] rr_ExpenseExampleHeading EXAMPLE
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund employs as its investment strategy a program of engaging in short sales of securities generally included in the underlying index and investing in derivative instruments, which primarily consist of equity index swaps and swaps on exchange-traded funds, futures contracts, and options on securities, securities indices, and futures contracts. While the Fund may write (sell) and purchase swaps, it expects primarily to write swaps. The Advisor attempts to consistently apply leverage to increase the Fund's exposure to -200% of the underlying index, and expects to rebalance the Fund's holdings daily to maintain such exposure. The Fund’s investment in derivatives serves as a substitute for directly selling short each of the securities included in the underlying index. Certain of the Fund’s derivatives investments may be traded in the over-the-counter (“OTC”) market. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus any borrowings for investment purposes, in financial instruments with economic characteristics that should perform opposite to the securities of companies included in the underlying index.

The S&P 500® Index is a capitalization-weighted index composed of 500 common stocks, which are chosen by the Standard & Poor’s Corporation on a statistical basis, and which generally represent large-capitalization companies with capitalizations ranging from $2.7 billion to $1,577.4 billion as of June 30, 2020. To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time. While the Fund's sector exposure may vary over time, as of June 30, 2020, the Fund has significant exposure to the Communication Services Sector, Consumer Discretionary Sector, Consumer Staples Sector, Financials Sector, Health Care Sector, Industrials Sector, and Information Technology Sector, as each sector is defined by the Global Industry Classification Standard, a widely recognized industry classification methodology developed by MSCI, Inc. and Standard & Poor's Financial Services LLC.

On a day-to-day basis, the Fund may hold U.S. government securities or cash equivalents. The Fund also may enter into repurchase agreements with counterparties that are deemed to present acceptable credit risks. In an effort to ensure that the Fund is fully invested on a day-to-day basis, the Fund may conduct any necessary trading activity at or just prior to the close of the U.S. financial markets. The Fund is non-diversified and, therefore, may invest a greater percentage of its assets in a particular issuer in comparison to a diversified fund.

Investments in derivative instruments, such as futures, options and swap agreements, have the economic effect of creating financial leverage in the Fund’s portfolio because such investments may give rise to losses that exceed the amount the Fund has invested in those instruments. Financial leverage will magnify, sometimes significantly, the Fund’s exposure to any increase or decrease in prices associated with a particular reference asset resulting in increased volatility in the value of the Fund’s portfolio. The value of the Fund’s portfolio is likely to experience greater volatility over short-term periods. While such financial leverage has the potential to produce greater gains, it also may result in greater losses, which in some cases may cause the Fund to liquidate other portfolio investments at a loss to comply with limits on leverage and asset segregation requirements imposed by the Investment Company Act of 1940 or to meet redemption requests.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time.
Risk [Heading] rr_RiskHeading PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money. In addition to this risk, the Fund is subject to the principal risks described below.

COMPOUNDING RISKIn addition to the correlation risks described under “Correlation Risk,” the Fund’s returns are subject to the effects of compounding, which generally will cause the Fund’s performance to not correlate to the performance of the benchmark over periods greater than a single day, before accounting for fees and fund expenses. Compounded returns are the result of reinvesting daily returns over periods greater than a single day. The Fund’s compounded returns for periods greater than a single day will be different than the performance of the benchmark over the same period. The effects of compounding on the performance of the Fund will be more pronounced when the underlying index experiences increased volatility, the greater the leverage employed in the Fund, and over longer holding periods.

Compounding affects the performance of all investments over time, but has a more significant effect on a leveraged index fund because the magnified changes in performance produced by the use of leverage lead to greater increases and decreases in the fund’s daily returns which are then compounded over time. The effects of compounding, therefore, have a more significant effect on the Fund because it seeks to match a multiple of the inverse performance of the Fund’s underlying index on a daily basis.

Fund performance for periods greater than one day can be estimated given any set of assumptions for the following factors: (a) underlying index performance; (b) underlying index volatility; (c) financing rates associated with leverage; (d) other Fund expenses; (e) dividends or interest paid by companies in the underlying index; and (f) period of time. The table below illustrates the impact of two principal factors – volatility and index performance – on Fund performance. The table shows estimated Fund returns for a number of combinations of performance and volatility over a one-year period. Performance shown in the table assumes: (a) no dividends paid by the companies included in the underlying index; (b) no Fund expenses; and (c) a cost of leverage of zero percent. If Fund expenses, including the cost of leverage, were included, the Fund’s performance would be lower than shown.
 
Areas shaded lighter represent those scenarios where the Fund can be expected to return more than twice the inverse performance of the underlying index; conversely, areas shaded darker represent those scenarios where the Fund can be expected to return the same or less than twice the inverse performance of the underlying index.
Index Performance
Annualized Volatility
1x
-2x
10%
25%
50%
75%
100%
-60%
120%
506%
404%
199%
13%
-69%
-50%
100%
286%
229%
91%
-27%
-82%
-40%
80%
171%
128%
33%
-49%
-86%
-30%
60%
99%
70%
-1%
-62%
-90%
-20%
40%
52%
31%
-27%
-70%
-93%
-10%
20%
20%
3%
-42%
-77%
-94%
0%
0%
-3%
-18%
-52%
-81%
-96%
10%
-20%
-19%
-31%
-61%
-84%
-96%
20%
-40%
-32%
-43%
-67%
-87%
-97%
30%
-60%
-42%
-51%
-72%
-89%
-97%
40%
-80%
-50%
-58%
-75%
-91%
-97%
50%
-100%
-57%
-63%
-79%
-92%
-98%
60%
-120%
-62%
-68%
-82%
-93%
-98%

The underlying index’s annualized historical volatility rate for the five-year period ended June 30, 2020 is 14.76%. The underlying index’s highest one-year volatility rate during the five-year period is 21.88%. The underlying index’s annualized performance for the five-year period ended June 30, 2020 is 10.73%.

Historical underlying index volatility and performance are not indications of what the underlying index volatility and performance will be in the future. The table is intended to isolate the effects of the underlying index volatility and index performance on the return of the Fund, and underscore that the Fund is designed as a short-term trading vehicle for investors who intend to actively monitor and manage their portfolios.

CORRELATION RISK—A number of factors may affect the Fund’s ability to achieve a high degree of correlation with its benchmark, including instances in which the Fund does not hold or have exposure to each component security of the underlying index and the effect of compounding on the Fund’s returns, and there can be no guarantee that the Fund will achieve a high degree of correlation. Failure to achieve a high degree of correlation may prevent the Fund from achieving its investment objective. The Fund does not attempt to, and should not be expected to, provide returns which are an inverse multiple of the returns of the underlying index for periods other than a single day. The risk of the Fund not achieving its daily investment objective will be more acute when the underlying index has an extreme one-day movement approaching 50%. In addition, as a result of compounding, the Fund’s performance for periods greater than a single day is likely to be either greater than or less than the inverse of the performance of the underlying index times the stated multiple in the Fund’s investment objective, before accounting for Fund fees and expenses.

COUNTERPARTY CREDIT RISK—The Fund may invest in financial instruments involving counterparties that attempt to gain exposure to a particular group of securities, index or asset class without actually purchasing those securities or investments, or to hedge a position. The Fund’s use of such financial instruments, including swap agreements, involves risks that are different from those associated with ordinary portfolio securities transactions. For example, the Fund is exposed to the risk that the counterparty may be unwilling or unable to make timely payments to meet its contractual obligations or may fail to return holdings that are subject to the agreement with the counterparty. If the counterparty becomes bankrupt or defaults on its payment obligations to the Fund, the Fund may not receive the full amount that it is entitled to receive. If this occurs, the value of your shares in the Fund will decrease.

DERIVATIVES RISK—The Fund’s investments in derivatives may pose risks in addition to and greater than those associated with investing directly in securities or other investments, including risks relating to leverage, imperfect correlations with underlying investments or the Fund’s other portfolio holdings, high price volatility, lack of availability, counterparty credit, liquidity, valuation and legal restrictions. Their use is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. If the Advisor 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. Certain risks are specific to the derivatives in which the Fund invests.

SWAP AGREEMENTS RISK—Swap agreements are contracts among the Fund and a counterparty to exchange the return of the pre-determined underlying investment (such as the rate of return of the underlying index). Swap agreements may be negotiated bilaterally and traded OTC between two parties or, in some instances, must be transacted through a futures commission merchant and cleared through a clearinghouse that serves as a central counterparty. Risks associated with the use of swap agreements are different from those associated with ordinary portfolio securities transactions, due in part to the fact they could be considered illiquid and many swaps trade on the OTC market. Swaps are particularly subject to counterparty credit, correlation, valuation, liquidity and leveraging risks. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity, but central clearing does not make swap transactions risk-free.

FUTURES CONTRACTS RISK—Futures contracts are typically exchange-traded contracts that call for the future delivery of an asset at a certain price and date, or cash settlement of the terms of the contract. Risks of futures contracts may be caused by an imperfect correlation between movements in the price of the instruments and the price of the underlying securities. In addition, there is the risk that the Fund may not be able to enter into a closing transaction because of an illiquid market. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value ("NAV"). Futures also are subject to leverage risks and to liquidity risk.

OPTIONS CONTRACTS RISK—Options or options on futures contracts give the holder of the option the right to buy (or to sell) a position in a security or in a contract to the writer of the option, at a certain price. They are subject to correlation risk because there may be an imperfect correlation between the options and the securities markets that cause a given transaction to fail to achieve its objectives. The successful use of options depends on the Advisor’s ability to correctly predict future price fluctuations and the degree of correlation between the options and securities markets. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Options also are particularly subject to leverage risk and can be subject to liquidity risk.

EARLY CLOSING RISK—The Fund is subject to the risk that unanticipated early closings of securities exchanges and other financial markets may result in the Fund’s inability to buy or sell securities or other financial instruments on that day and may cause the Fund to incur substantial trading losses.

EQUITY RISK—The Fund is subject to the risk that the value of the equity securities and equity-based derivatives in the Fund’s portfolio will decline due to volatility in the equity market caused by general market and economic conditions, perceptions regarding particular industries represented in the equity market, or factors relating to specific companies to which the Fund has investment exposure.

INDUSTRY CONCENTRATION RISK—The Fund may concentrate (i.e., invest more than 25% of its net assets) its investments in a limited number of issuers conducting business in the same industry or group of related industries. To the extent the Fund does so, the Fund is more vulnerable to adverse market, economic, regulatory, political or other developments affecting that industry or group of related industries than a fund that invests its assets more broadly. The industries in which the underlying index components, and thus the Fund's assets, may be concentrated will vary as the composition of the underlying index changes over time.

INTEREST RATE RISK—The market value of fixed income investments and related financial instruments will change in response to interest rate changes. During periods of falling interest rates, the values of fixed income securities generally rise. Conversely, during periods of rising interest rates, the values of such securities generally decline. Securities with greater interest rate sensitivity and longer maturities generally are subject to greater fluctuations in value. The Fund may invest in variable and floating rate securities. Although these instruments are generally less sensitive to interest rate changes than fixed rate instruments, the value of floating rate and variable securities may decline if their interest rates do not rise as quickly, or as much, as general interest rates. Changes in government or central bank policy, including changes in tax policy or changes in a central bank’s implementation of specific policy goals, may have a substantial impact on interest rates, and could have an adverse effect on prices for fixed income securities and on the performance of the Fund. In particular, interest rates in the U.S. are at or near historically low levels and as a result, fixed income securities markets may experience heightened levels of interest rate risk. Any unexpected or sudden reversal of the fiscal policy underlying current interest rate levels could adversely affect the value of the Fund. There can be no guarantee that any particular government or central bank policy will be continued, discontinued or changed, nor that any such policy will have the desired effect on interest rates.

LARGE-CAPITALIZATION SECURITIES RISK—The Fund is subject to the risk that large-capitalization stocks may outperform other segments of the equity market or the equity market as a whole. Larger, more established companies may be unable to respond quickly to new competitive challenges such as changes in technology and may not be able to attain the high growth rate of smaller companies, especially during extended periods of economic expansion.

LEVERAGING RISK—The Fund achieves leveraged exposure to the underlying index through the use of derivative instruments.  The more the Fund invests in leveraged instruments, the more this leverage will magnify any losses on those investments. The Fund’s investment in these instruments generally requires a small investment relative to the amount of investment exposure assumed.  As a result, such investments may give rise to losses that exceed the amount invested in those instruments. Since the Fund’s investment strategy involves consistently applied leverage, the value of the Fund’s shares will tend to increase or decrease more than the value of any increase or decrease in the underlying index. Leverage also will have the effect of magnifying tracking error.

LIQUIDITY AND VALUATION RISK—In certain circumstances, it may be difficult for the Fund to purchase and sell a particular investment within a reasonable time at a fair price, or the price at which it has been valued by the Advisor for purposes of the Fund's NAV, causing the Fund to be less liquid. While the Fund intends to invest in liquid securities and financial instruments, under certain market conditions, such as when trading in a particular investment has been halted temporarily by an exchange because the maximum price change of that investment has been realized, it may be difficult or impossible for the Fund to liquidate such investments. In addition, the ability of the Fund to assign an accurate daily value to certain investments may be difficult, and the Advisor may be required to fair value the investments.

MARKET RISK—The market value of the securities and derivatives held by the Fund may fluctuate over time in response to factors affecting individual companies or other factors such as changing economic, political or financial markets.

NON-DIVERSIFICATION RISK—The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).

OTC TRADING RISK—Certain of the derivatives in which the Fund may invest may be traded (and privately negotiated) in the OTC market. While the OTC derivatives market is the primary trading venue for many derivatives, it is largely unregulated and provides for less transparency than a national securities or commodities exchange. As a result and similar to other privately negotiated contracts, the Fund is subject to counterparty credit risk with respect to such derivatives contracts.

PASSIVE INVESTMENT RISK—The Fund is not actively managed and the Advisor does not attempt to take defensive positions in rising markets. Therefore, the Fund may be subject to greater losses in a rising market than a fund that is actively managed.

PORTFOLIO TURNOVER RISK—Periodic rebalancing of the Fund's holdings pursuant to its daily investment objective may lead to a greater number of portfolio transactions in the Fund than experienced by other mutual funds. Such frequent and active trading may lead to significantly higher transaction costs because of increased broker commissions associated with such transactions.

REAL ESTATE INVESTMENT TRUST ("REIT") RISK—REITs are securities that invest substantially all of their assets in real estate, trade like stocks and may qualify for special tax considerations. Investments in REITs subject the Fund to risks associated with the direct ownership of real estate. Market conditions or events affecting the overall real estate and REIT markets, such as declining property values or rising interest rates, could have a negative impact on the real estate market and the value of REITs in general. REITs may be affected by changes in the value of the underlying property owned by the trusts, economic downturns which may have a material effect on the real estate in which the REITs invest and their underlying portfolio securities. Further, REITs are dependent upon specialized management skills and may have their investments in relatively few properties, or in a small geographic area or a single property type. Failure of a company to qualify as a REIT under federal tax law may have adverse consequences to the Fund. In addition, REITs have their own expenses, and the Fund will bear a proportionate share of those expenses.

REGULATORY AND LEGAL RISK—U.S. and non-U.S. governmental agencies and other regulators regularly implement additional 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 (such as regulations related to investments in derivatives and other transactions). These regulations and laws impact the investment strategies, performance, costs and operations of the Fund or taxation of shareholders.

REPURCHASE AGREEMENT RISK—The Fund’s investment in repurchase agreements may be subject to market and credit risk with respect to the collateral securing the repurchase agreements. Investments in repurchase agreements also may be subject to the risk that the market value of the underlying obligations may decline prior to the expiration of the repurchase agreement term.

SECTOR RISK—The Fund is subject to the Sector Risks described below.

Communication Services Sector Risk. The Fund's investments are exposed to issuers conducting business in the Communication Services Sector. The Communication Services Sector includes companies that facilitate communication and offer related content and information through various mediums. It includes telecom and media & entertainment companies including producers of interactive gaming products and companies engaged in content and information creation or distribution through proprietary platforms. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Communication Services Sector. The performance of companies operating in the Communication Services Sector has historically been closely tied to the performance of the overall economy, and also is affected by economic growth, consumer confidence, attitudes and spending. Increased sensitivity to short product cycles and aggressive pricing, challenges in bringing products to market and changes in demographics and consumer tastes also can affect the demand for, and success of, communication services products and services in the marketplace.

Consumer Discretionary Sector Risk. The Fund’s investments are exposed to issuers conducting business in the Consumer Discretionary Sector. The manufacturing segment of the Consumer Discretionary Sector includes automotive, household durable goods, leisure equipment and textiles and apparel. The services segment includes hotels, restaurants and other leisure facilities, media production and services, and consumer retailing and services. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Consumer Discretionary Sector.  The performance of companies operating in the Consumer Discretionary Sector has historically been closely tied to the performance of the overall economy, and also is affected by economic growth, consumer confidence, attitudes and spending. Changes in demographics and consumer tastes also can affect the demand for, and success of, consumer products and services in the marketplace. Moreover, the Consumer Discretionary Sector encompasses those businesses that tend to be the most sensitive to economic cycles.

Consumer Staples Sector Risk. The Fund’s investments are exposed to issuers conducting business in the Consumer Staples Sector. The Consumer Staples Sector includes manufacturers and distributors of food, beverages and tobacco and producers of non-durable household goods and personal products. It also includes food and drug retailing companies as well as hypermarkets and consumer super centers. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Consumer Staples Sector. The performance of companies operating in the Consumer Staples Sector has historically been closely tied to the performance of the overall economy, and also is affected by consumer confidence, demands and preferences, and spending. In addition, companies in the Consumer Staples Sector may be subject to risks pertaining to the supply of, demand for, and prices of raw materials.

Financials Sector Risk. The Fund's investments are exposed to issuers conducting business in the Financials Sector. The Financials Sector includes companies involved in banking, thrifts and mortgage finance, specialized finance, consumer finance, asset management and custody banks, investment banking and brokerage, and insurance. It also includes the Financial Exchanges & Data and Mortgage Real Estate Investment Trusts (REITs) sub-industries. Certain Financials Sector issuers serve as counterparties with which the Fund may enter into derivatives agreements or other similar contractual arrangements. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Financials Sector, which may adversely affect a company's ability to fulfill its obligations as a financial counterparty. Companies operating in the Financials Sector are subject to extensive government regulation, which may limit the financial commitments they can make and the interest rates and fees they can charge. Profitability is largely dependent on the availability and cost of capital funds, and may fluctuate significantly when interest rates change or due to increased competition.

Health Care Sector Risk.  The Fund's investments are exposed to issuers conducting business in the Health Care Sector. The Health Care Sector includes health care providers and services, companies that manufacture and distribute health care equipment and supplies, and health care technology companies. It also includes companies involved in the research, development, production and marketing of pharmaceuticals and biotechnology products. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Health Care Sector. The prices of the securities of companies operating in the Health Care Sector are closely tied to government regulation and approval of their products and services, which can have a significant effect on the price and availability of those products and services.

Industrials Sector Risk. The Fund's investments are exposed to issuers conducting business in the Industrials Sector. The Industrials Sector includes manufacturers and distributors of capital goods such as aerospace and defense, building projects, electrical equipment and machinery, and companies that offer construction and engineering services. It also includes providers of commercial and professional services including printing, environmental and facilities services, office services and supplies, security and alarm services, human resource and employment services, and research and consulting services. It also includes companies that provide transportation services. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Industrials Sector. The prices of the securities of companies operating in the Industrials Sector may fluctuate due to the level and volatility of commodity prices, the exchange value of the dollar, import controls, worldwide competition, liability for environmental damage, depletion of resources, and mandated expenditures for safety and pollution control devices.

Information Technology Sector Risk. The Fund's investments are exposed to issuers conducting business in the Information Technology Sector. The Information Technology Sector includes companies that offer software and information technology services, manufacturers and distributors of technology hardware and equipment such as communications equipment, cellular phones, computers and peripherals, electronic equipment and related instruments and semiconductors. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Information Technology Sector. The prices of the securities of companies operating in the Information Technology Sector are closely tied to market competition, increased sensitivity to short product cycles and aggressive pricing, and problems with bringing products to market.

SHAREHOLDER TRADING RISK—The Fund may be used as a tool for certain investors that employ trading strategies involving frequent trading. Such trading strategies may lead to increased portfolio turnover in the Fund, higher transaction costs, and the possibility of increased short-term capital gains (which will be taxable to shareholders as ordinary income when distributed to them) and/or long-term capital gains. Large movements of assets into and out of the Fund due to active or frequent trading also may adversely affect the Fund's ability to achieve its investment objective.

SHORT SALES AND SHORT EXPOSURE 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. A short exposure through a derivative exposes the Fund to counterparty credit risk and leverage risk. The risk for loss on a short sale or other short exposure is greater than a direct investment in the security itself because the price of the borrowed security may rise, thereby increasing the price at which the security must be purchased. The risk of loss through a short sale or other short exposure may in some cases be theoretically unlimited. Government actions also may affect the Fund’s ability to engage in short selling.

TEMPORARY DEFENSIVE INVESTMENT RISK—The Advisor generally does not attempt to take defensive positions in the Fund in declining markets. Therefore, the Fund may be subject to greater losses in a declining market than a fund that does take defensive positions in declining markets.

TRACKING ERROR RISK—The Advisor may not be able to cause the Fund’s performance to match that of the Fund’s benchmark, either on a daily or aggregate basis. Factors such as Fund expenses, imperfect correlation between the Fund’s investments and those of the underlying index, rounding of share prices, changes to the composition of the underlying index, regulatory policies, high portfolio turnover rate, and the use of leverage all contribute to tracking error. Tracking error may cause the Fund’s performance to be less than you expect.

TRADING HALT RISK—The Fund typically will hold futures contracts and short-term options. The major exchanges on which these contracts are traded, such as the Chicago Mercantile Exchange, have established limits on how much the trading price of a futures contract or option may decline over various time periods within a day, and may halt trading in a contract that exceeds such limits. If a trading halt occurs, the Fund may temporarily be unable to purchase or sell certain securities, futures contracts or options. Such a trading halt near the time the Fund prices its shares may limit the Fund’s ability to use leverage and fully invest its assets, which could increase tracking error and adversely affect performance, and may prevent the Fund from achieving its investment objective.

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. The value of U.S. government securities will fluctuate and such securities are subject to the risks associated with fixed-income and debt securities, particularly interest rate and credit risk.
Risk Lose Money [Text] rr_RiskLoseMoney As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund. The following table shows the performance of the Class H shares of the Fund as an average over different periods of time in comparison to the performance of a broad-based market index. The figures in the bar chart and table assume the reinvestment of dividends and capital gains distributions. Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Updated performance information is available on the Fund’s website at www.guggenheiminvestments.com or by calling 800.820.0888.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800.820.0888
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.guggenheiminvestments.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.
Bar Chart Narrative [Text Block] rr_BarChartNarrativeTextBlock
The performance information shown below for Class H shares is based on a calendar year. The year-to-date return for the period from January 1, 2020 through June 30, 2020 is -21.78%.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarter Return
 
Lowest Quarter Return
 
Q4 2018
29.68%
 
Q4 2011
-24.44
 %
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURN (for periods ended December 31, 2019)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock
The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Class H Prospectus | INVERSE S&P 500 2X STRATEGY FUND | S&P 500 Index  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses or taxes)
Label rr_AverageAnnualReturnLabel S&P 500® Index (reflects no deduction for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 31.49%
5 Years rr_AverageAnnualReturnYear05 11.70%
10 Years rr_AverageAnnualReturnYear10 13.56%
Class H Prospectus | INVERSE S&P 500 2X STRATEGY FUND | Class H  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol RYTPX
Shareholder Fee, Other rr_ShareholderFeeOther none
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.90%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.69% [2]
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 1.84%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 187
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 579
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 995
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,159
Annual Return 2010 rr_AnnualReturn2010 (32.87%)
Annual Return 2011 rr_AnnualReturn2011 (20.04%)
Annual Return 2012 rr_AnnualReturn2012 (30.46%)
Annual Return 2013 rr_AnnualReturn2013 (45.83%)
Annual Return 2014 rr_AnnualReturn2014 (26.46%)
Annual Return 2015 rr_AnnualReturn2015 (10.14%)
Annual Return 2016 rr_AnnualReturn2016 (24.66%)
Annual Return 2017 rr_AnnualReturn2017 (32.54%)
Annual Return 2018 rr_AnnualReturn2018 4.42%
Annual Return 2019 rr_AnnualReturn2019 (41.84%)
Year to Date Return, Label rr_YearToDateReturnLabel year-to-date return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2020
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn (21.78%)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarter Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2018
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 29.68%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarter Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (24.44%)
Label rr_AverageAnnualReturnLabel Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 (41.84%)
5 Years rr_AverageAnnualReturnYear05 (22.62%)
10 Years rr_AverageAnnualReturnYear10 (27.30%)
Class H Prospectus | INVERSE S&P 500 2X STRATEGY FUND | Class H | After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions
1 Year rr_AverageAnnualReturnYear01 (41.89%)
5 Years rr_AverageAnnualReturnYear05 (22.64%)
10 Years rr_AverageAnnualReturnYear10 (27.31%)
Class H Prospectus | INVERSE S&P 500 2X STRATEGY FUND | Class H | After Taxes on Distributions and Sales  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions and Sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 (24.77%)
5 Years rr_AverageAnnualReturnYear05 (14.79%)
10 Years rr_AverageAnnualReturnYear10 (12.29%)
Class H Prospectus | NASDAQ-100 2x Strategy Fund  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading NASDAQ-100® 2X STRATEGY FUND
Supplement [Text Block] ck0001092720_SupplementTextBlock
IMPORTANT INFORMATION ABOUT THE FUND
The NASDAQ-100® 2x Strategy Fund (the “Fund”) is very different from most other mutual funds in that it seeks daily leveraged investment results.  As a result, the Fund may be riskier than alternatives that do not use leverage because the performance of an investment in the Fund is magnified.   

The effect of leverage on the Fund will generally cause the Fund’s performance to not match the performance of the Fund’s benchmark (as described below) over a period of time greater than a single trading day. This means that the return of the Fund for a period of longer than a single trading day will be the result of each day’s compounded returns over the period, which will very likely differ from twice the return of the Fund’s underlying index (as defined below) for that period. As a consequence, especially in periods of market volatility, the path or trend of the benchmark during the longer period may be at least as important to the Fund’s cumulative return for the longer period as the cumulative return of the benchmark for the relevant longer period.  Further, the return for investors who invest for a period longer than a single trading day will not be the product of the return of the Fund’s stated investment goal (i.e., 2x) and the cumulative performance of the benchmark. 

The Fund is not suitable for all investors.  The Fund should be utilized only by investors who (a) understand the risks associated with the use of leverage, (b) understand the consequences of seeking daily leveraged investment results, and (c) intend to actively monitor and manage their investments.  Investors who do not meet these criteria should not buy shares of the Fund. An investment in the Fund is not a complete investment program.
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund seeks to provide investment results that match, before fees and expenses, the performance of a specific benchmark on a daily basis. The Fund’s current benchmark is 200% of the performance of the NASDAQ-100 Index® (the “underlying index”). The Fund does not seek to achieve its investment objective over a period of time greater than one day.
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES OF THE FUND
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold Class H shares of the Fund.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading PORTFOLIO TURNOVER
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Total Annual Fund Operating Expenses or the Example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 237% of the average value of its portfolio. The Fund’s portfolio turnover rate is calculated without regard to cash instruments and most derivatives. If such instruments were included, the Fund’s portfolio turnover rate might be significantly higher.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 237.00%
Expense Example [Heading] rr_ExpenseExampleHeading EXAMPLE
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund employs as its investment strategy a program of investing in the common stock of companies that are generally within the capitalization range of the underlying index and derivative instruments, which primarily consist of equity index swaps and swaps on exchange-traded funds ("ETFs"), futures contracts, and options on securities, futures contracts, and stock indices. While the Fund may write (sell) and purchase swaps, it expects primarily to purchase swaps. Swap agreements and futures and options contracts, if used properly, may enable the Fund to meet its objective by increasing the Fund’s exposure to the securities included in the underlying index or in the same proportion that those securities are represented in the Fund's benchmark. The Advisor attempts to consistently apply leverage to increase the Fund's exposure to 200% of the underlying index, and expects to rebalance the Fund's holdings daily to maintain such exposure. The Fund’s use of derivatives and the leveraged investment exposure created by such use are expected to be significant. Certain of the Fund’s derivatives investments may be traded in the over-the-counter (“OTC”) market. The Fund also may invest in American Depositary Receipts (“ADRs”) to gain exposure to international companies included in the underlying index. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus any borrowings for investment purposes, in financial instruments with economic characteristics that should perform similarly to the securities of companies in the underlying index.

The NASDAQ-100 Index® is a modified capitalization-weighted index composed of 100 of the largest non-financial companies listed on The Nasdaq Stock Market with capitalizations ranging from $9.7 billion to $1,577.4 billion as of June 30, 2020. To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. While the Fund's sector exposure may vary over time, as of June 30, 2020, the Fund has significant exposure to the Communication Services Sector, Consumer Discretionary Sector, Consumer Staples Sector, Health Care Sector, and Information Technology Sector, as each sector is defined by the Global Industry Classification Standard, a widely recognized industry classification methodology developed by MSCI, Inc. and Standard & Poor's Financial Services LLC. Also, as of June 30, 2020, the underlying index components, and thus the Fund's investments, are concentrated (i.e., more than 25% of its assets) in securities issued by companies in the Internet & Direct Marketing Retail Industry, a separate industry within the Consumer Discretionary Sector, and Semiconductors & Semiconductor Equipment Industry, Software Industry, and Technology Hardware, Storage & Peripherals Industry, separate industries within the within the Information Technology Sector. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time.
 
On a day-to-day basis, the Fund may hold U.S. government securities or cash equivalents. The Fund also may enter into repurchase agreements with counterparties that are deemed to present acceptable credit risks. In an effort to ensure that the Fund is fully invested on a day-to-day basis, the Fund may conduct any necessary trading activity at or just prior to the close of the U.S. financial markets. The Fund is non-diversified and, therefore, may invest a greater percentage of its assets in a particular issuer in comparison to a diversified fund.
 
Investments in derivative instruments, such as futures, options and swap agreements, have the economic effect of creating financial leverage in the Fund’s portfolio because such investments may give rise to losses that exceed the amount the Fund has invested in those instruments. Financial leverage will magnify, sometimes significantly, the Fund’s exposure to any increase or decrease in prices associated with a particular reference asset resulting in increased volatility in the value of the Fund’s portfolio. The value of the Fund’s portfolio is likely to experience greater volatility over short-term periods. While such financial leverage has the potential to produce greater gains, it also may result in greater losses, which in some cases may cause the Fund to liquidate other portfolio investments at a loss to comply with limits on leverage and asset segregation requirements imposed by the Investment Company Act of 1940 or to meet redemption requests.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. As of June 30, 2020, the underlying index components, and thus the Fund's investments, are concentrated (i.e., more than 25% of its assets) in securities issued by companies in the Internet & Direct Marketing Retail Industry, a separate industry within the Consumer Discretionary Sector, and Semiconductors & Semiconductor Equipment Industry, Software Industry, and Technology Hardware, Storage & Peripherals Industry, separate industries within the within the Information Technology Sector. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time.
Risk [Heading] rr_RiskHeading PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money. In addition to this risk, the Fund is subject to the principal risks described below.

COMPOUNDING RISKIn addition to the correlation risks described under “Correlation Risk,” the Fund’s returns are subject to the effects of compounding, which generally will cause the Fund’s performance to not correlate to the performance of the benchmark over periods greater than a single day, before accounting for fees and fund expenses. Compounded returns are the result of reinvesting daily returns over periods greater than a single day. The Fund’s compounded returns for periods greater than a single day will be different than the performance of the benchmark over the same period. The effects of compounding on the performance of the Fund will be more pronounced when the underlying index experiences increased volatility, the greater the leverage employed in the Fund, and over longer holding periods.

Compounding affects the performance of all investments over time, but has a more significant effect on a leveraged index fund because the magnified changes in performance produced by the use of leverage lead to greater increases and decreases in the fund’s daily returns which are then compounded over time. The effects of compounding, therefore, have a more significant effect on the Fund because it seeks to match a multiple of the performance of the Fund’s underlying index on a daily basis.

Fund performance for periods greater than one day can be estimated given any set of assumptions for the following factors: (a) underlying index performance; (b) underlying index volatility; (c) financing rates associated with leverage; (d) other Fund expenses; (e) dividends or interest paid by companies in the underlying index; and (f) period of time. The table below illustrates the impact of two principal factors – volatility and index performance – on Fund performance. The table shows estimated Fund returns for a number of combinations of performance and volatility over a one-year period. Performance shown in the table assumes: (a) no dividends paid by the companies included in the underlying index; (b) no Fund expenses; and (c) a cost of leverage of zero percent. If Fund expenses, including the cost of leverage, were included, the Fund’s performance would be lower than shown.
 
Areas shaded lighter represent those scenarios where the Fund can be expected to return more than twice the performance of the underlying index; conversely, areas shaded darker represent those scenarios where the Fund can be expected to return less than twice the performance of the underlying index.
Index Performance
Annualized Volatility
1x
2x
10%
25%
50%
75%
100%
-60%
-120%
-84%
-85%
-88%
-91%
-94%
-50%
-100%
-75%
-77%
-81%
-86%
-91%
-40%
-80%
-65%
-66%
-72%
-80%
-87%
-30%
-60%
-52%
-54%
-62%
-72%
-82%
-20%
-40%
-37%
-41%
-49%
-64%
-78%
-10%
-20%
-20%
-24%
-37%
-55%
-71%
0%
0%
-1%
-5%
-22%
-43%
-65%
10%
20%
19%
14%
-5%
-31%
-58%
20%
40%
42%
36%
11%
-15%
-47%
30%
60%
67%
59%
32%
-3%
-38%
40%
80%
93%
84%
52%
11%
-28%
50%
100%
122%
111%
76%
28%
-20%
60%
120%
154%
140%
100%
44%
-10%

The underlying index’s annualized historical volatility rate for the five-year period ended June 30, 2020 is 16.99%. The underlying index’s highest one-year volatility rate during the five-year period is 22.16%. The underlying index’s annualized performance for the five-year period ended June 30, 2020 is 19.58%.

Historical underlying index volatility and performance are not indications of what the underlying index volatility and performance will be in the future. The table is intended to isolate the effects of the underlying index volatility and index performance on the return of the Fund, and underscore that the Fund is designed as a short-term trading vehicle for investors who intend to actively monitor and manage their portfolios.

CORRELATION RISK—A number of factors may affect the Fund’s ability to achieve a high degree of correlation with its benchmark, including instances in which the Fund does not hold or have exposure to each component security of the underlying index and the effect of compounding on the Fund’s returns, and there can be no guarantee that the Fund will achieve a high degree of correlation. Failure to achieve a high degree of correlation may prevent the Fund from achieving its investment objective. The Fund does not attempt to, and should not be expected to, provide returns which are a multiple of the returns of the underlying index for periods other than a single day. The risk of the Fund not achieving its daily investment objective will be more acute when the underlying index has an extreme one-day movement approaching 50%. In addition, as a result of compounding, the Fund’s performance for periods greater than a single day is likely to be either greater than or less than the performance of the underlying index times the stated multiple in the Fund’s investment objective, before accounting for Fund fees and expenses.

COUNTERPARTY CREDIT RISK—The Fund may invest in financial instruments involving counterparties that attempt to gain exposure to a particular group of securities, index or asset class without actually purchasing those securities or investments, or to hedge a position. The Fund’s use of such financial instruments, including swap agreements, involves risks that are different from those associated with ordinary portfolio securities transactions. For example, the Fund is exposed to the risk that the counterparty may be unwilling or unable to make timely payments to meet its contractual obligations or may fail to return holdings that are subject to the agreement with the counterparty. If the counterparty becomes bankrupt or defaults on its payment obligations to the Fund, the Fund may not receive the full amount that it is entitled to receive. If this occurs, the value of your shares in the Fund will decrease.

DEPOSITARY RECEIPT RISK—The Fund may hold the securities of non-U.S. companies in the form of ADRs. The underlying securities of the ADRs in the Fund’s portfolio are subject to fluctuations in foreign currency exchange rates that may affect the value of the Fund’s portfolio. In addition, the value of the securities underlying the ADRs may change materially when the U.S. markets are not open for trading. Investments in the underlying foreign securities also involve political and economic risks distinct from those associated with investing in the securities of U.S. issuers.

DERIVATIVES RISK—The Fund’s investments in derivatives may pose risks in addition to and greater than those associated with investing directly in securities or other investments, including risks relating to leverage, imperfect correlations with underlying investments or the Fund’s other portfolio holdings, high price volatility, lack of availability, counterparty credit, liquidity, valuation and legal restrictions. Their use is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. If the Advisor 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. Certain risks are specific to the derivatives in which the Fund invests.

SWAP AGREEMENTS RISK—Swap agreements are contracts among the Fund and a counterparty to exchange the return of the pre-determined underlying investment (such as the rate of return of the underlying index). Swap agreements may be negotiated bilaterally and traded OTC between two parties or, in some instances, must be transacted through a futures commission merchant and cleared through a clearinghouse that serves as a central counterparty. Risks associated with the use of swap agreements are different from those associated with ordinary portfolio securities transactions, due in part to the fact they could be considered illiquid and many swaps trade on the OTC market. Swaps are particularly subject to counterparty credit, correlation, valuation, liquidity and leveraging risks. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity, but central clearing does not make swap transactions risk-free.

FUTURES CONTRACTS RISK—Futures contracts are typically exchange-traded contracts that call for the future delivery of an asset at a certain price and date, or cash settlement of the terms of the contract. Risks of futures contracts may be caused by an imperfect correlation between movements in the price of the instruments and the price of the underlying securities. In addition, there is the risk that the Fund may not be able to enter into a closing transaction because of an illiquid market. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value ("NAV"). Futures also are subject to leverage risks and to liquidity risk.

OPTIONS CONTRACTS RISK—Options or options on futures contracts give the holder of the option the right to buy (or to sell) a position in a security or in a contract to the writer of the option, at a certain price. They are subject to correlation risk because there may be an imperfect correlation between the options and the securities markets that cause a given transaction to fail to achieve its objectives. The successful use of options depends on the Advisor’s ability to correctly predict future price fluctuations and the degree of correlation between the options and securities markets. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Options also are particularly subject to leverage risk and can be subject to liquidity risk.

EARLY CLOSING RISK—The Fund is subject to the risk that unanticipated early closings of securities exchanges and other financial markets may result in the Fund’s inability to buy or sell securities or other financial instruments on that day and may cause the Fund to incur substantial trading losses.

EQUITY RISK—The Fund is subject to the risk that the value of the equity securities and equity-based derivatives in the Fund’s portfolio will decline due to volatility in the equity market caused by general market and economic conditions, perceptions regarding particular industries represented in the equity market, or factors relating to specific companies to which the Fund has investment exposure.

FOREIGN ISSUER EXPOSURE RISKThe Fund may invest in securities of foreign companies directly, or in financial instruments that are indirectly linked to the performance of foreign issuers, such as ADRs. The Fund’s exposure to foreign issuers and investments in foreign securities, if any, are subject to additional risks in comparison to U.S. securities and U.S. issuers, including currency fluctuations, adverse political and economic developments, unreliable or untimely information, less liquidity, limited legal recourse and higher transactional costs.

INDUSTRY CONCENTRATION RISK—The Fund may concentrate (i.e., invest more than 25% of its net assets) its investments in a limited number of issuers conducting business in the same industry or group of related industries. To the extent the Fund does so, the Fund is more vulnerable to adverse market, economic, regulatory, political or other developments affecting that industry or group of related industries than a fund that invests its assets more broadly. As of June 30, 2020, the underlying index components, and thus the Fund's investments, are concentrated in securities issued by companies in the industries described below. The industries in which the underlying index components, and thus the Fund's assets, may be concentrated will vary as the composition of the underlying index changes over time.

Internet & Direct Marketing Retail Industry. As a result of the Fund's concentration in the Internet & Direct Marketing Retail Industry, the Fund is subject to the risks associated with that Industry. The Internet & Direct Marketing Retail Industry includes companies that provide retail services primarily on the Internet, through mail order, and TV home shopping retailers. The Internet & Direct Marketing Retail Industry relies heavily on consumer spending and the prices of securities of issuers in the Internet & Direct Marketing Retail Industry may fluctuate widely due to general economic conditions, consumer spending and the availability of disposable income, changing consumer tastes and preferences, and consumer demographics. Legislative or regulatory changes and increased government supervision also may affect companies in the Internet & Direct Marketing Retail Industry. The Internet & Direct Marketing Retail Industry is a separate industry within the Consumer Discretionary Sector.

Semiconductors & Semiconductor Equipment Industry. As a result of the Fund's concentration in the Semiconductors & Semiconductor Equipment Industry, the Fund is subject to the risks associated with that Industry. The Semiconductors & Semiconductor Equipment Industry includes manufacturers of semiconductor equipment, semiconductors and related products, including equipment used in the solar power industry and manufacturers of solar modules and cells. Companies in the Semiconductors & Semiconductor Equipment Industry rely heavily on technology. The prices of the securities of companies in the Semiconductors & Semiconductor Equipment Industry may fluctuate widely due to competitive pressures, increased sensitivity to short product cycles and aggressive pricing, heavy expenses incurred for research and development of products or services that prove unsuccessful, problems related to bringing products to market, and rapid obsolescence of products. Legislative or regulatory changes and increased government supervision also may affect companies in the Semiconductors & Semiconductor Equipment Industry. The Semiconductors & Semiconductor Equipment Industry is a separate industry within the Information Technology Sector.

Software Industry. As a result of the Fund's concentration in the Software Industry, the Fund is subject to the risks associated with that Industry. The Software Industry includes companies engaged in developing and producing software designed for specialized applications and systems and database management software and manufacturers of home entertainment and educational software used primarily in the home. The prices of the securities of issuers in the Software Industry may fluctuate widely due to competitive pressures, increased sensitivity to short product cycles and aggressive pricing, heavy expenses incurred for research and development of products or services that prove unsuccessful, challenges related to bringing products to market, and rapid obsolescence of products. In addition, many software companies rely on a combination of patents, copyrights, trademarks and trade secret laws to establish and protect their proprietary rights in their products and technologies. There can be no assurance that the steps taken by software companies to protect their proprietary rights will be adequate to prevent misappropriation of their technology or that competitors will not independently develop technologies that are substantially equivalent or superior to such companies' technology. Legislative or regulatory changes and increased government supervision also may affect companies in the Software Industry. The Software Industry is a separate industry within the Information Technology Sector.

Technology Hardware, Storage & Peripherals Industry. As a result of the Fund's concentration in the Technology Hardware, Storage & Peripherals Industry, the Fund is subject to the risks associated with that Industry. The Technology Hardware, Storage & Peripherals Industry includes companies engaged in the manufacture of cellular phones, personal computers, servers, electronic computer components and peripherals. The Technology Hardware, Storage & Peripherals Industry includes data storage components, motherboards, audio and video cards, monitors, keyboards, printers, and other peripherals. The prices of the securities of companies in the Technology Hardware, Software & Peripherals Industry may fluctuate widely due to competitive pressures, aggressive pricing, technological developments, changing domestic demand, and the ability to attract and retain skilled employees. In addition, the market for products produced by software companies is characterized by rapidly changing technology, rapid product obsolescence, and cyclical market patterns. Legislative or regulatory changes and increased government supervision also may affect companies in the Technology Hardware, Storage & Peripherals Industry. The Technology Hardware, Storage & Peripherals Industry is a separate industry within the Information Technology Sector.

INTEREST RATE RISK—The market value of fixed income investments and related financial instruments will change in response to interest rate changes. During periods of falling interest rates, the values of fixed income securities generally rise. Conversely, during periods of rising interest rates, the values of such securities generally decline. Securities with greater interest rate sensitivity and longer maturities generally are subject to greater fluctuations in value. The Fund may invest in variable and floating rate securities. Although these instruments are generally less sensitive to interest rate changes than fixed rate instruments, the value of floating rate and variable securities may decline if their interest rates do not rise as quickly, or as much, as general interest rates. Changes in government or central bank policy, including changes in tax policy or changes in a central bank’s implementation of specific policy goals, may have a substantial impact on interest rates, and could have an adverse effect on prices for fixed income securities and on the performance of the Fund. In particular, interest rates in the U.S. are at or near historically low levels and as a result, fixed income securities markets may experience heightened levels of interest rate risk. Any unexpected or sudden reversal of the fiscal policy underlying current interest rate levels could adversely affect the value of the Fund. There can be no guarantee that any particular government or central bank policy will be continued, discontinued or changed, nor that any such policy will have the desired effect on interest rates.

LARGE-CAPITALIZATION SECURITIES RISK—The Fund is subject to the risk that large-capitalization stocks may underperform other segments of the equity market or the equity market as a whole. Larger, more established companies may be unable to respond quickly to new competitive challenges such as changes in technology and may not be able to attain the high growth rate of smaller companies, especially during extended periods of economic expansion.

LEVERAGING RISK—The Fund achieves leveraged exposure to the underlying index through the use of derivative instruments. The more the Fund invests in leveraged instruments, the more this leverage will magnify any losses on those investments. The Fund’s investment in these instruments generally requires a small investment relative to the amount of investment exposure assumed.  As a result, such investments may give rise to losses that exceed the amount invested in those instruments. Since the Fund’s investment strategy involves consistently applied leverage, the value of the Fund’s shares will tend to increase or decrease more than the value of any increase or decrease in the underlying index. Leverage also will have the effect of magnifying tracking error.

LIQUIDITY AND VALUATION RISK—In certain circumstances, it may be difficult for the Fund to purchase and sell a particular investment within a reasonable time at a fair price, or the price at which it has been valued by the Advisor for purposes of the Fund's NAV, causing the Fund to be less liquid. While the Fund intends to invest in liquid securities and financial instruments, under certain market conditions, such as when trading in a particular investment has been halted temporarily by an exchange because the maximum price change of that investment has been realized, it may be difficult or impossible for the Fund to liquidate such investments. In addition, the ability of the Fund to assign an accurate daily value to certain investments may be difficult, and the Advisor may be required to fair value the investments.

MARKET RISK—The market value of the securities and derivatives held by the Fund may fluctuate over time in response to factors affecting individual companies or other factors such as changing economic, political or financial markets.

NON-DIVERSIFICATION RISK—The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).

OTC TRADING RISK—Certain of the derivatives in which the Fund may invest may be traded (and privately negotiated) in the OTC market. While the OTC derivatives market is the primary trading venue for many derivatives, it is largely unregulated and provides for less transparency than a national securities or commodities exchange. As a result and similar to other privately negotiated contracts, the Fund is subject to counterparty credit risk with respect to such derivatives contracts.

PASSIVE INVESTMENT RISK—The Fund is not actively managed and the Advisor does not attempt to take defensive positions in declining markets. Therefore, the Fund may be subject to greater losses in a declining market than a fund that is actively managed.
 
PORTFOLIO TURNOVER RISK—Periodic rebalancing of the Fund's holdings pursuant to its daily investment objective may lead to a greater number of portfolio transactions in the Fund than experienced by other mutual funds. Such frequent and active trading may lead to significantly higher transaction costs because of increased broker commissions associated with such transactions.

REGULATORY AND LEGAL RISK—U.S. and non-U.S. governmental agencies and other regulators regularly implement additional 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 (such as regulations related to investments in derivatives and other transactions). These regulations and laws impact the investment strategies, performance, costs and operations of the Fund or taxation of shareholders.

REPURCHASE AGREEMENT RISK—The Fund’s investment in repurchase agreements may be subject to market and credit risk with respect to the collateral securing the repurchase agreements. Investments in repurchase agreements also may be subject to the risk that the market value of the underlying obligations may decline prior to the expiration of the repurchase agreement term.

SECTOR RISK—The Fund is subject to the Sector Risks described below.

Communication Services Sector Risk. The Fund's investments are exposed to issuers conducting business in the Communication Services Sector. The Communication Services Sector includes companies that facilitate communication and offer related content and information through various mediums. It includes telecom and media & entertainment companies including producers of interactive gaming products and companies engaged in content and information creation or distribution through proprietary platforms. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Communication Services Sector. The performance of companies operating in the Communication Services Sector has historically been closely tied to the performance of the overall economy, and also is affected by economic growth, consumer confidence, attitudes and spending. Increased sensitivity to short product cycles and aggressive pricing, challenges in bringing products to market and changes in demographics and consumer tastes also can affect the demand for, and success of, communication services products and services in the marketplace.

Consumer Discretionary Sector Risk. The Fund’s investments are exposed to issuers conducting business in the Consumer Discretionary Sector. The manufacturing segment of the Consumer Discretionary Sector includes automotive, household durable goods, leisure equipment and textiles and apparel. The services segment includes hotels, restaurants and other leisure facilities, media production and services, and consumer retailing and services. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Consumer Discretionary Sector.  The performance of companies operating in the Consumer Discretionary Sector has historically been closely tied to the performance of the overall economy, and also is affected by economic growth, consumer confidence, attitudes and spending. Changes in demographics and consumer tastes also can affect the demand for, and success of, consumer products and services in the marketplace. Moreover, the Consumer Discretionary Sector encompasses those businesses that tend to be the most sensitive to economic cycles.

Consumer Staples Sector Risk. The Fund’s investments are exposed to issuers conducting business in the Consumer Staples Sector. The Consumer Staples Sector includes manufacturers and distributors of food, beverages and tobacco and producers of non-durable household goods and personal products. It also includes food and drug retailing companies as well as hypermarkets and consumer super centers. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Consumer Staples Sector. The performance of companies operating in the Consumer Staples Sector has historically been closely tied to the performance of the overall economy, and also is affected by consumer confidence, demands and preferences, and spending. In addition, companies in the Consumer Staples Sector may be subject to risks pertaining to the supply of, demand for, and prices of raw materials.

Health Care Sector Risk.  The Fund's investments are exposed to issuers conducting business in the Health Care Sector. The Health Care Sector includes health care providers and services, companies that manufacture and distribute health care equipment and supplies, and health care technology companies. It also includes companies involved in the research, development, production and marketing of pharmaceuticals and biotechnology products. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Health Care Sector. The prices of the securities of companies operating in the Health Care Sector are closely tied to government regulation and approval of their products and services, which can have a significant effect on the price and availability of those products and services.

Information Technology Sector Risk. The Fund's investments are exposed to issuers conducting business in the Information Technology Sector. The Information Technology Sector includes companies that offer software and information technology services, manufacturers and distributors of technology hardware and equipment such as communications equipment, cellular phones, computers and peripherals, electronic equipment and related instruments and semiconductors. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Information Technology Sector. The prices of the securities of companies operating in the Information Technology Sector are closely tied to market competition, increased sensitivity to short product cycles and aggressive pricing, and problems with bringing products to market.

SHAREHOLDER TRADING RISK—The Fund may be used as a tool for certain investors that employ trading strategies involving frequent trading. Such trading strategies may lead to increased portfolio turnover in the Fund, higher transaction costs, and the possibility of increased short-term capital gains (which will be taxable to shareholders as ordinary income when distributed to them) and/or long-term capital gains. Large movements of assets into and out of the Fund due to active or frequent trading also may adversely affect the Fund's ability to achieve its investment objective.

TEMPORARY DEFENSIVE INVESTMENT RISK—The Advisor generally does not attempt to take defensive positions in the Fund in declining markets. Therefore, the Fund may be subject to greater losses in a declining market than a fund that does take defensive positions in declining markets.

TRACKING ERROR RISK—The Advisor may not be able to cause the Fund’s performance to match that of the Fund’s benchmark, either on a daily or aggregate basis. Factors such as Fund expenses, imperfect correlation between the Fund’s investments and those of the underlying index, rounding of share prices, changes to the composition of the underlying index, regulatory policies, high portfolio turnover rate, and the use of leverage all contribute to tracking error. Tracking error may cause the Fund’s performance to be less than you expect.

TRADING HALT RISK—The Fund typically will hold futures contracts and short-term options. The major exchanges on which these contracts are traded, such as the Chicago Mercantile Exchange, have established limits on how much the trading price of a futures contract or option may decline over various time periods within a day, and may halt trading in a contract that exceeds such limits. If a trading halt occurs, the Fund may temporarily be unable to purchase or sell certain securities, futures contracts or options. Such a trading halt near the time the Fund prices its shares may limit the Fund’s ability to use leverage and fully invest its assets, which could increase tracking error and adversely affect performance, and may prevent the Fund from achieving its investment objective.

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. The value of U.S. government securities will fluctuate and such securities are subject to the risks associated with fixed-income and debt securities, particularly interest rate and credit risk.

Risk Lose Money [Text] rr_RiskLoseMoney As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund. The following table shows the performance of the Class H shares of the Fund as an average over different periods of time in comparison to the performance of a broad-based market index. The figures in the bar chart and table assume the reinvestment of dividends and capital gains distributions. Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Updated performance information is available on the Fund’s website at www.guggenheiminvestments.com or by calling 800.820.0888.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800.820.0888
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.guggenheiminvestments.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.
Bar Chart Narrative [Text Block] rr_BarChartNarrativeTextBlock
The performance information shown below for Class H shares is based on a calendar year. The year-to-date return for the period from January 1, 2020 through June 30, 2020 is 21.14%.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarter Return
 
Lowest Quarter Return
 
Q1 2012
45.83%
 
Q4 2018
-33.48
 %
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURN (for periods ended December 31, 2019)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock
The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Class H Prospectus | NASDAQ-100 2x Strategy Fund | NASDAQ 100 Index  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses or taxes)
Label rr_AverageAnnualReturnLabel NASDAQ-100 Index® (reflects no deduction for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 39.46%
5 Years rr_AverageAnnualReturnYear05 16.91%
10 Years rr_AverageAnnualReturnYear10 18.07%
Class H Prospectus | NASDAQ-100 2x Strategy Fund | Class H  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol RYVYX
Shareholder Fee, Other rr_ShareholderFeeOther none
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.90%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.72% [3]
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 1.87%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 190
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 588
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,011
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,190
Annual Return 2010 rr_AnnualReturn2010 36.46%
Annual Return 2011 rr_AnnualReturn2011 (0.90%)
Annual Return 2012 rr_AnnualReturn2012 33.98%
Annual Return 2013 rr_AnnualReturn2013 80.18%
Annual Return 2014 rr_AnnualReturn2014 36.53%
Annual Return 2015 rr_AnnualReturn2015 13.72%
Annual Return 2016 rr_AnnualReturn2016 9.02%
Annual Return 2017 rr_AnnualReturn2017 68.90%
Annual Return 2018 rr_AnnualReturn2018 (9.20%)
Annual Return 2019 rr_AnnualReturn2019 80.69%
Year to Date Return, Label rr_YearToDateReturnLabel year-to-date return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2020
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 21.14%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarter Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Mar. 31, 2012
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 45.83%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarter Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2018
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (33.48%)
Label rr_AverageAnnualReturnLabel Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 80.69%
5 Years rr_AverageAnnualReturnYear05 28.00%
10 Years rr_AverageAnnualReturnYear10 31.37%
Class H Prospectus | NASDAQ-100 2x Strategy Fund | Class H | After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions
1 Year rr_AverageAnnualReturnYear01 76.94%
5 Years rr_AverageAnnualReturnYear05 25.56%
10 Years rr_AverageAnnualReturnYear10 29.70%
Class H Prospectus | NASDAQ-100 2x Strategy Fund | Class H | After Taxes on Distributions and Sales  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions and Sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 47.69%
5 Years rr_AverageAnnualReturnYear05 21.81%
10 Years rr_AverageAnnualReturnYear10 26.92%
Class H Prospectus | Inverse NASDAQ-100 2x Strategy Fund  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading INVERSE NASDAQ-100® 2X STRATEGY FUND
Supplement [Text Block] ck0001092720_SupplementTextBlock
IMPORTANT INFORMATION ABOUT THE FUND
The Inverse NASDAQ-100® 2x Strategy Fund (the “Fund”) is very different from most other mutual funds in that it seeks to provide leveraged investment results that match twice the inverse of the performance of a specific underlying index on a daily basis, a result opposite of most mutual funds. As a result, the Fund may be riskier than alternatives that do not use leverage because the performance of an investment in the Fund is magnified.

The effect of leverage on the Fund will generally cause the Fund’s performance to not match the performance of the Fund’s benchmark (as described below) over a period of time greater than a single trading day. This means that the return of the Fund for a period of longer than a single trading day will be the result of each day’s compounded returns over the period, which will very likely differ from twice the inverse return of the Fund’s underlying index (as defined below) for that period. As a consequence, especially in periods of market volatility, the path or trend of the benchmark during the longer period may be at least as important to the Fund’s cumulative return for the longer period as the cumulative return of the benchmark for the relevant longer period. Further, the return for investors who invest for a period longer than a single trading day will not be the product of the return of the Fund’s stated investment goal (i.e., -2x) and the cumulative performance of the benchmark.

The Fund is not suitable for all investors. The Fund should be utilized only by investors who (a) understand the risks associated with the use of leverage, (b) understand the consequences of seeking daily leveraged investment results, (c) understand the risks of shorting and (d) intend to actively monitor and manage their investments. Investors who do not meet these criteria should not buy shares of the Fund. An investment in the Fund is not a complete investment program.
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund seeks to provide investment results that match, before fees and expenses, the performance of a specific benchmark on a daily basis. The Fund’s current benchmark is 200% of the inverse (opposite) of the performance of the NASDAQ-100 Index® (the “underlying index”). The Fund does not seek to achieve its investment objective over a period of time greater than one day.
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES OF THE FUND
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold Class H shares of the Fund.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading PORTFOLIO TURNOVER
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Total Annual Fund Operating Expenses or the Example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 0% of the average value of its portfolio. The Fund’s portfolio turnover rate is calculated without regard to cash instruments and most derivatives. If such instruments were included, the Fund’s portfolio turnover rate might be significantly higher.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate none
Expense Example [Heading] rr_ExpenseExampleHeading EXAMPLE
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund employs as its investment strategy a program of engaging in short sales of securities generally included in the underlying index and investing in derivative instruments, which primarily consist of equity index swaps and swaps on exchange-traded funds, futures contracts, and options on securities, securities indices, and futures contracts. While the Fund may write (sell) and purchase swaps, it expects primarily to write swaps. The Advisor attempts to consistently apply leverage to increase the Fund's exposure to -200% of the underlying index, and expects to rebalance the Fund's holdings daily to maintain such exposure. The Fund’s investment in derivatives serves as a substitute for directly selling short each of the securities included in the underlying index. Certain of the Fund’s derivatives investments may be traded in the over-the-counter (“OTC”) market. The Fund also may invest in American Depositary Receipts (“ADRs”) to gain inverse exposure to international companies included in the underlying index. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus any borrowings for investment purposes, in financial instruments with economic characteristics that should perform opposite to the securities of companies included in the underlying index.

The NASDAQ-100 Index® is a modified capitalization-weighted index composed of 100 of the largest non-financial companies listed on The Nasdaq Stock Market with capitalizations ranging from $9.7 billion to $1,577.4 billion as of June 30, 2020. To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. While the Fund's sector exposure may vary over time, as of June 30, 2020, the Fund has significant exposure to the Communication Services Sector, Consumer Discretionary Sector, Consumer Staples Sector, Health Care Sector, and Information Technology Sector, as each sector is defined by the Global Industry Classification Standard, a widely recognized industry classification methodology developed by MSCI, Inc. and Standard & Poor's Financial Services LLC. Also, as of June 30, 2020, the underlying index components, and thus the Fund's investments, are concentrated (i.e., more than 25% of its assets) in securities issued by companies in the Internet & Direct Marketing Retail Industry, a separate industry within the Consumer Discretionary Sector, and Semiconductors & Semiconductor Equipment Industry, Software Industry, and Technology Hardware, Storage & Peripherals Industry, separate industries within the within the Information Technology Sector. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time.

On a day-to-day basis, the Fund may hold U.S. government securities or cash equivalents. The Fund also may enter into repurchase agreements with counterparties that are deemed to present acceptable credit risks. In an effort to ensure that the Fund is fully invested on a day-to-day basis, the Fund may conduct any necessary trading activity at or just prior to the close of the U.S. financial markets. The Fund is non-diversified and, therefore, may invest a greater percentage of its assets in a particular issuer in comparison to a diversified fund.

Investments in derivative instruments, such as futures, options and swap agreements, have the economic effect of creating financial leverage in the Fund’s portfolio because such investments may give rise to losses that exceed the amount the Fund has invested in those instruments. Financial leverage will magnify, sometimes significantly, the Fund’s exposure to any increase or decrease in prices associated with a particular reference asset resulting in increased volatility in the value of the Fund’s portfolio. The value of the Fund’s portfolio is likely to experience greater volatility over short-term periods. While such financial leverage has the potential to produce greater gains, it also may result in greater losses, which in some cases may cause the Fund to liquidate other portfolio investments at a loss to comply with limits on leverage and asset segregation requirements imposed by the Investment Company Act of 1940 or to meet redemption requests.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. As of June 30, 2020, the underlying index components, and thus the Fund's investments, are concentrated (i.e., more than 25% of its assets) in securities issued by companies in the Internet & Direct Marketing Retail Industry, a separate industry within the Consumer Discretionary Sector, and Semiconductors & Semiconductor Equipment Industry, Software Industry, and Technology Hardware, Storage & Peripherals Industry, separate industries within the within the Information Technology Sector. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time.
Risk [Heading] rr_RiskHeading PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money. In addition to this risk, the Fund is subject to the principal risks described below.

COMPOUNDING RISKIn addition to the correlation risks described under “Correlation Risk,” the Fund’s returns are subject to the effects of compounding, which generally will cause the Fund’s performance to not correlate to the performance of the benchmark over periods greater than a single day, before accounting for fees and fund expenses. Compounded returns are the result of reinvesting daily returns over periods greater than a single day. The Fund’s compounded returns for periods greater than a single day will be different than the performance of the benchmark over the same period. The effects of compounding on the performance of the Fund will be more pronounced when the underlying index experiences increased volatility, the greater the leverage employed in the Fund, and over longer holding periods.

Compounding affects the performance of all investments over time, but has a more significant effect on a leveraged index fund because the magnified changes in performance produced by the use of leverage lead to greater increases and decreases in the fund’s daily returns which are then compounded over time. The effects of compounding, therefore, have a more significant effect on the Fund because it seeks to match a multiple of the inverse performance of the Fund’s underlying index on a daily basis.

Fund performance for periods greater than one day can be estimated given any set of assumptions for the following factors: (a) underlying index performance; (b) underlying index volatility; (c) financing rates associated with leverage; (d) other Fund expenses; (e) dividends or interest paid by companies in the underlying index; and (f) period of time. The table below illustrates the impact of two principal factors – volatility and index performance – on Fund performance. The table shows estimated Fund returns for a number of combinations of performance and volatility over a one-year period. Performance shown in the table assumes: (a) no dividends paid by the companies included in the underlying index; (b) no Fund expenses; and (c) a cost of leverage of zero percent. If Fund expenses, including the cost of leverage, were included, the Fund’s performance would be lower than shown.
 
Areas shaded lighter represent those scenarios where the Fund can be expected to return more than twice the inverse performance of the underlying index; conversely, areas shaded darker represent those scenarios where the Fund can be expected to return the same or less than twice the inverse performance of the underlying index.
Index Performance
Annualized Volatility
1x
-2x
10%
25%
50%
75%
100%
-60%
120%
506%
404%
199%
13%
-69%
-50%
100%
286%
229%
91%
-27%
-82%
-40%
80%
171%
128%
33%
-49%
-86%
-30%
60%
99%
70%
-1%
-62%
-90%
-20%
40%
52%
31%
-27%
-70%
-93%
-10%
20%
20%
3%
-42%
-77%
-94%
0%
0%
-3%
-18%
-52%
-81%
-96%
10%
-20%
-19%
-31%
-61%
-84%
-96%
20%
-40%
-32%
-43%
-67%
-87%
-97%
30%
-60%
-42%
-51%
-72%
-89%
-97%
40%
-80%
-50%
-58%
-75%
-91%
-97%
50%
-100%
-57%
-63%
-79%
-92%
-98%
60%
-120%
-62%
-68%
-82%
-93%
-98%

The underlying index’s annualized historical volatility rate for the five-year period ended June 30, 2020 is 16.99%. The underlying index’s highest one-year volatility rate during the five-year period is 22.16%. The underlying index’s annualized performance for the five-year period ended June 30, 2020 is 19.58%.

Historical underlying index volatility and performance are not indications of what the underlying index volatility and performance will be in the future. The table is intended to isolate the effects of the underlying index volatility and index performance on the return of the Fund, and underscore that the Fund is designed as a short-term trading vehicle for investors who intend to actively monitor and manage their portfolios.

CORRELATION RISK—A number of factors may affect the Fund’s ability to achieve a high degree of correlation with its benchmark, including instances in which the Fund does not hold or have exposure to each component security of the underlying index and the effect of compounding on the Fund’s returns, and there can be no guarantee that the Fund will achieve a high degree of correlation. Failure to achieve a high degree of correlation may prevent the Fund from achieving its investment objective. The Fund does not attempt to, and should not be expected to, provide returns which are an inverse multiple of the returns of the underlying index for periods other than a single day. The risk of the Fund not achieving its daily investment objective will be more acute when the underlying index has an extreme one-day movement approaching 50%. In addition, as a result of compounding, the Fund’s performance for periods greater than a single day is likely to be either greater than or less than the inverse of the performance of the underlying index times the stated multiple in the Fund’s investment objective, before accounting for Fund fees and expenses.

COUNTERPARTY CREDIT RISK—The Fund may invest in financial instruments involving counterparties that attempt to gain exposure to a particular group of securities, index or asset class without actually purchasing those securities or investments, or to hedge a position. The Fund’s use of such financial instruments, including swap agreements, involves risks that are different from those associated with ordinary portfolio securities transactions. For example, the Fund is exposed to the risk that the counterparty may be unwilling or unable to make timely payments to meet its contractual obligations or may fail to return holdings that are subject to the agreement with the counterparty. If the counterparty becomes bankrupt or defaults on its payment obligations to the Fund, the Fund may not receive the full amount that it is entitled to receive. If this occurs, the value of your shares in the Fund will decrease.

DEPOSITARY RECEIPT RISK—The Fund may hold the securities of non-U.S. companies in the form of ADRs. The underlying securities of the ADRs in the Fund’s portfolio are subject to fluctuations in foreign currency exchange rates that may affect the value of the Fund’s portfolio. In addition, the value of the securities underlying the ADRs may change materially when the U.S. markets are not open for trading. Investments in the underlying foreign securities also involve political and economic risks distinct from those associated with investing in the securities of U.S. issuers.

DERIVATIVES RISK—The Fund’s investments in derivatives may pose risks in addition to and greater than those associated with investing directly in securities or other investments, including risks relating to leverage, imperfect correlations with underlying investments or the Fund’s other portfolio holdings, high price volatility, lack of availability, counterparty credit, liquidity, valuation and legal restrictions. Their use is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. If the Advisor 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. Certain risks are specific to the derivatives in which the Fund invests.

SWAP AGREEMENTS RISK—Swap agreements are contracts among the Fund and a counterparty to exchange the return of the pre-determined underlying investment (such as the rate of return of the underlying index). Swap agreements may be negotiated bilaterally and traded OTC between two parties or, in some instances, must be transacted through a futures commission merchant and cleared through a clearinghouse that serves as a central counterparty. Risks associated with the use of swap agreements are different from those associated with ordinary portfolio securities transactions, due in part to the fact they could be considered illiquid and many swaps trade on the OTC market. Swaps are particularly subject to counterparty credit, correlation, valuation, liquidity and leveraging risks. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity, but central clearing does not make swap transactions risk-free.

FUTURES CONTRACTS RISK—Futures contracts are typically exchange-traded contracts that call for the future delivery of an asset at a certain price and date, or cash settlement of the terms of the contract. Risks of futures contracts may be caused by an imperfect correlation between movements in the price of the instruments and the price of the underlying securities. In addition, there is the risk that the Fund may not be able to enter into a closing transaction because of an illiquid market. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value ("NAV"). Futures also are subject to leverage risks and to liquidity risk.

OPTIONS CONTRACTS RISK—Options or options on futures contracts give the holder of the option the right to buy (or to sell) a position in a security or in a contract to the writer of the option, at a certain price. They are subject to correlation risk because there may be an imperfect correlation between the options and the securities markets that cause a given transaction to fail to achieve its objectives. The successful use of options depends on the Advisor’s ability to correctly predict future price fluctuations and the degree of correlation between the options and securities markets. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Options also are particularly subject to leverage risk and can be subject to liquidity risk.

EARLY CLOSING RISK—The Fund is subject to the risk that unanticipated early closings of securities exchanges and other financial markets may result in the Fund’s inability to buy or sell securities or other financial instruments on that day and may cause the Fund to incur substantial trading losses.

EQUITY RISK—The Fund is subject to the risk that the value of the equity securities and equity-based derivatives in the Fund’s portfolio will decline due to volatility in the equity market caused by general market and economic conditions, perceptions regarding particular industries represented in the equity market, or factors relating to specific companies to which the Fund has investment exposure.

FOREIGN ISSUER EXPOSURE RISKThe Fund may invest in securities of foreign companies directly, or in financial instruments that are indirectly linked to the performance of foreign issuers, such as ADRs. The Fund’s exposure to foreign issuers and investments in foreign securities, if any, are subject to additional risks in comparison to U.S. securities and U.S. issuers, including currency fluctuations, adverse political and economic developments, unreliable or untimely information, less liquidity, limited legal recourse and higher transactional costs.

INDUSTRY CONCENTRATION RISK—The Fund may concentrate (i.e., invest more than 25% of its net assets) its investments in a limited number of issuers conducting business in the same industry or group of related industries. To the extent the Fund does so, the Fund is more vulnerable to adverse market, economic, regulatory, political or other developments affecting that industry or group of related industries than a fund that invests its assets more broadly. As of June 30, 2020, the underlying index components, and thus the Fund's investments, are concentrated in securities issued by companies in the industries described below. The industries in which the underlying index components, and thus the Fund's assets, may be concentrated will vary as the composition of the underlying index changes over time.

Internet & Direct Marketing Retail Industry. As a result of the Fund's concentration in the Internet & Direct Marketing Retail Industry, the Fund is subject to the risks associated with that Industry. The Internet & Direct Marketing Retail Industry includes companies that provide retail services primarily on the Internet, through mail order, and TV home shopping retailers. The Internet & Direct Marketing Retail Industry relies heavily on consumer spending and the prices of securities of issuers in the Internet & Direct Marketing Retail Industry may fluctuate widely due to general economic conditions, consumer spending and the availability of disposable income, changing consumer tastes and preferences, and consumer demographics. Legislative or regulatory changes and increased government supervision also may affect companies in the Internet & Direct Marketing Retail Industry. The Internet & Direct Marketing Retail Industry is a separate industry within the Consumer Discretionary Sector.

Semiconductors & Semiconductor Equipment Industry. As a result of the Fund's concentration in the Semiconductors & Semiconductor Equipment Industry, the Fund is subject to the risks associated with that Industry. The Semiconductors & Semiconductor Equipment Industry includes manufacturers of semiconductor equipment, semiconductors and related products, including equipment used in the solar power industry and manufacturers of solar modules and cells. Companies in the Semiconductors & Semiconductor Equipment Industry rely heavily on technology. The prices of the securities of companies in the Semiconductors & Semiconductor Equipment Industry may fluctuate widely due to competitive pressures, increased sensitivity to short product cycles and aggressive pricing, heavy expenses incurred for research and development of products or services that prove unsuccessful, problems related to bringing products to market, and rapid obsolescence of products. Legislative or regulatory changes and increased government supervision also may affect companies in the Semiconductors & Semiconductor Equipment Industry. The Semiconductors & Semiconductor Equipment Industry is a separate industry within the Information Technology Sector.

Software Industry. As a result of the Fund's concentration in the Software Industry, the Fund is subject to the risks associated with that Industry. The Software Industry includes companies engaged in developing and producing software designed for specialized applications and systems and database management software and manufacturers of home entertainment and educational software used primarily in the home. The prices of the securities of issuers in the Software Industry may fluctuate widely due to competitive pressures, increased sensitivity to short product cycles and aggressive pricing, heavy expenses incurred for research and development of products or services that prove unsuccessful, challenges related to bringing products to market, and rapid obsolescence of products. In addition, many software companies rely on a combination of patents, copyrights, trademarks and trade secret laws to establish and protect their proprietary rights in their products and technologies. There can be no assurance that the steps taken by software companies to protect their proprietary rights will be adequate to prevent misappropriation of their technology or that competitors will not independently develop technologies that are substantially equivalent or superior to such companies' technology. Legislative or regulatory changes and increased government supervision also may affect companies in the Software Industry. The Software Industry is a separate industry within the Information Technology Sector.

Technology Hardware, Storage & Peripherals Industry. As a result of the Fund's concentration in the Technology Hardware, Storage & Peripherals Industry, the Fund is subject to the risks associated with that Industry. The Technology Hardware, Storage & Peripherals Industry includes companies engaged in the manufacture of cellular phones, personal computers, servers, electronic computer components and peripherals. The Technology Hardware, Storage & Peripherals Industry includes data storage components, motherboards, audio and video cards, monitors, keyboards, printers, and other peripherals. The prices of the securities of companies in the Technology Hardware, Software & Peripherals Industry may fluctuate widely due to competitive pressures, aggressive pricing, technological developments, changing domestic demand, and the ability to attract and retain skilled employees. In addition, the market for products produced by software companies is characterized by rapidly changing technology, rapid product obsolescence, and cyclical market patterns. Legislative or regulatory changes and increased government supervision also may affect companies in the Technology Hardware, Storage & Peripherals Industry. The Technology Hardware, Storage & Peripherals Industry is a separate industry within the Information Technology Sector.

INTEREST RATE RISK—The market value of fixed income investments and related financial instruments will change in response to interest rate changes. During periods of falling interest rates, the values of fixed income securities generally rise. Conversely, during periods of rising interest rates, the values of such securities generally decline. Securities with greater interest rate sensitivity and longer maturities generally are subject to greater fluctuations in value. The Fund may invest in variable and floating rate securities. Although these instruments are generally less sensitive to interest rate changes than fixed rate instruments, the value of floating rate and variable securities may decline if their interest rates do not rise as quickly, or as much, as general interest rates. Changes in government or central bank policy, including changes in tax policy or changes in a central bank’s implementation of specific policy goals, may have a substantial impact on interest rates, and could have an adverse effect on prices for fixed income securities and on the performance of the Fund. In particular, interest rates in the U.S. are at or near historically low levels and as a result, fixed income securities markets may experience heightened levels of interest rate risk. Any unexpected or sudden reversal of the fiscal policy underlying current interest rate levels could adversely affect the value of the Fund. There can be no guarantee that any particular government or central bank policy will be continued, discontinued or changed, nor that any such policy will have the desired effect on interest rates.

LARGE-CAPITALIZATION SECURITIES RISK—The Fund is subject to the risk that large-capitalization stocks may outperform other segments of the equity market or the equity market as a whole. Larger, more established companies may be unable to respond quickly to new competitive challenges such as changes in technology and may not be able to attain the high growth rate of smaller companies, especially during extended periods of economic expansion.

LEVERAGING RISK—The Fund achieves leveraged exposure to the underlying index through the use of derivative instruments.  The more the Fund invests in leveraged instruments, the more this leverage will magnify any losses on those investments. The Fund’s investment in these instruments generally requires a small investment relative to the amount of investment exposure assumed.  As a result, such investments may give rise to losses that exceed the amount invested in those instruments. Since the Fund’s investment strategy involves consistently applied leverage, the value of the Fund’s shares will tend to increase or decrease more than the value of any increase or decrease in the underlying index. Leverage also will have the effect of magnifying tracking error.

LIQUIDITY AND VALUATION RISK—In certain circumstances, it may be difficult for the Fund to purchase and sell a particular investment within a reasonable time at a fair price, or the price at which it has been valued by the Advisor for purposes of the Fund's NAV, causing the Fund to be less liquid. While the Fund intends to invest in liquid securities and financial instruments, under certain market conditions, such as when trading in a particular investment has been halted temporarily by an exchange because the maximum price change of that investment has been realized, it may be difficult or impossible for the Fund to liquidate such investments. In addition, the ability of the Fund to assign an accurate daily value to certain investments may be difficult, and the Advisor may be required to fair value the investments.

MARKET RISK—The market value of the securities and derivatives held by the Fund may fluctuate over time in response to factors affecting individual companies or other factors such as changing economic, political or financial markets.

NON-DIVERSIFICATION RISK—The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).

OTC TRADING RISK—Certain of the derivatives in which the Fund may invest may be traded (and privately negotiated) in the OTC market. While the OTC derivatives market is the primary trading venue for many derivatives, it is largely unregulated and provides for less transparency than a national securities or commodities exchange. As a result and similar to other privately negotiated contracts, the Fund is subject to counterparty credit risk with respect to such derivatives contracts.

PASSIVE INVESTMENT RISK—The Fund is not actively managed and the Advisor does not attempt to take defensive positions in rising markets. Therefore, the Fund may be subject to greater losses in a rising market than a fund that is actively managed.

PORTFOLIO TURNOVER RISK—Periodic rebalancing of the Fund's holdings pursuant to its daily investment objective may lead to a greater number of portfolio transactions in the Fund than experienced by other mutual funds. Such frequent and active trading may lead to significantly higher transaction costs because of increased broker commissions associated with such transactions.

REGULATORY AND LEGAL RISK—U.S. and non-U.S. governmental agencies and other regulators regularly implement additional 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 (such as regulations related to investments in derivatives and other transactions). These regulations and laws impact the investment strategies, performance, costs and operations of the Fund or taxation of shareholders.
 
REPURCHASE AGREEMENT RISK—The Fund’s investment in repurchase agreements may be subject to market and credit risk with respect to the collateral securing the repurchase agreements. Investments in repurchase agreements also may be subject to the risk that the market value of the underlying obligations may decline prior to the expiration of the repurchase agreement term.

SECTOR RISK—The Fund is subject to the Sector Risks described below.

Communication Services Sector Risk. The Fund's investments are exposed to issuers conducting business in the Communication Services Sector. The Communication Services Sector includes companies that facilitate communication and offer related content and information through various mediums. It includes telecom and media & entertainment companies including producers of interactive gaming products and companies engaged in content and information creation or distribution through proprietary platforms. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Communication Services Sector. The performance of companies operating in the Communication Services Sector has historically been closely tied to the performance of the overall economy, and also is affected by economic growth, consumer confidence, attitudes and spending. Increased sensitivity to short product cycles and aggressive pricing, challenges in bringing products to market and changes in demographics and consumer tastes also can affect the demand for, and success of, communication services products and services in the marketplace.

Consumer Discretionary Sector Risk. The Fund’s investments are exposed to issuers conducting business in the Consumer Discretionary Sector. The manufacturing segment of the Consumer Discretionary Sector includes automotive, household durable goods, leisure equipment and textiles and apparel. The services segment includes hotels, restaurants and other leisure facilities, media production and services, and consumer retailing and services. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Consumer Discretionary Sector.  The performance of companies operating in the Consumer Discretionary Sector has historically been closely tied to the performance of the overall economy, and also is affected by economic growth, consumer confidence, attitudes and spending. Changes in demographics and consumer tastes also can affect the demand for, and success of, consumer products and services in the marketplace. Moreover, the Consumer Discretionary Sector encompasses those businesses that tend to be the most sensitive to economic cycles.

Consumer Staples Sector Risk. The Fund’s investments are exposed to issuers conducting business in the Consumer Staples Sector. The Consumer Staples Sector includes manufacturers and distributors of food, beverages and tobacco and producers of non-durable household goods and personal products. It also includes food and drug retailing companies as well as hypermarkets and consumer super centers. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Consumer Staples Sector. The performance of companies operating in the Consumer Staples Sector has historically been closely tied to the performance of the overall economy, and also is affected by consumer confidence, demands and preferences, and spending. In addition, companies in the Consumer Staples Sector may be subject to risks pertaining to the supply of, demand for, and prices of raw materials.

Health Care Sector Risk.  The Fund's investments are exposed to issuers conducting business in the Health Care Sector. The Health Care Sector includes health care providers and services, companies that manufacture and distribute health care equipment and supplies, and health care technology companies. It also includes companies involved in the research, development, production and marketing of pharmaceuticals and biotechnology products. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Health Care Sector. The prices of the securities of companies operating in the Health Care Sector are closely tied to government regulation and approval of their products and services, which can have a significant effect on the price and availability of those products and services.

Information Technology Sector Risk. The Fund's investments are exposed to issuers conducting business in the Information Technology Sector. The Information Technology Sector includes companies that offer software and information technology services, manufacturers and distributors of technology hardware and equipment such as communications equipment, cellular phones, computers and peripherals, electronic equipment and related instruments and semiconductors. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Information Technology Sector. The prices of the securities of companies operating in the Information Technology Sector are closely tied to market competition, increased sensitivity to short product cycles and aggressive pricing, and problems with bringing products to market.

SHAREHOLDER TRADING RISK—The Fund may be used as a tool for certain investors that employ trading strategies involving frequent trading. Such trading strategies may lead to increased portfolio turnover in the Fund, higher transaction costs, and the possibility of increased short-term capital gains (which will be taxable to shareholders as ordinary income when distributed to them) and/or long-term capital gains. Large movements of assets into and out of the Fund due to active or frequent trading also may adversely affect the Fund's ability to achieve its investment objective.

SHORT SALES AND SHORT EXPOSURE 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. A short exposure through a derivative exposes the Fund to counterparty credit risk and leverage risk. The risk for loss on a short sale or other short exposure is greater than a direct investment in the security itself because the price of the borrowed security may rise, thereby increasing the price at which the security must be purchased. The risk of loss through a short sale or other short exposure may in some cases be theoretically unlimited. Government actions also may affect the Fund’s ability to engage in short selling.

TEMPORARY DEFENSIVE INVESTMENT RISK—The Advisor generally does not attempt to take defensive positions in the Fund in declining markets. Therefore, the Fund may be subject to greater losses in a declining market than a fund that does take defensive positions in declining markets.

TRACKING ERROR RISK—The Advisor may not be able to cause the Fund’s performance to match that of the Fund’s benchmark, either on a daily or aggregate basis. Factors such as Fund expenses, imperfect correlation between the Fund’s investments and those of the underlying index, rounding of share prices, changes to the composition of the underlying index, regulatory policies, high portfolio turnover rate, and the use of leverage all contribute to tracking error. Tracking error may cause the Fund’s performance to be less than you expect.

TRADING HALT RISK—The Fund typically will hold futures contracts and short-term options. The major exchanges on which these contracts are traded, such as the Chicago Mercantile Exchange, have established limits on how much the trading price of a futures contract or option may decline over various time periods within a day, and may halt trading in a contract that exceeds such limits. If a trading halt occurs, the Fund may temporarily be unable to purchase or sell certain securities, futures contracts or options. Such a trading halt near the time the Fund prices its shares may limit the Fund’s ability to use leverage and fully invest its assets, which could increase tracking error and adversely affect performance, and may prevent the Fund from achieving its investment objective.

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. The value of U.S. government securities will fluctuate and such securities are subject to the risks associated with fixed-income and debt securities, particularly interest rate and credit risk.

Risk Lose Money [Text] rr_RiskLoseMoney As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund. The following table shows the performance of the Class H shares of the Fund as an average over different periods of time in comparison to the performance of a broad-based market index. The figures in the bar chart and table assume the reinvestment of dividends and capital gains distributions. Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Updated performance information is available on the Fund’s website at www.guggenheiminvestments.com or by calling 800.820.0888.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800.820.0888
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.guggenheiminvestments.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.
Bar Chart Narrative [Text Block] rr_BarChartNarrativeTextBlock
The performance information shown below for Class H shares is based on a calendar year. The year-to-date return for the period from January 1, 2020 through June 30, 2020 is -45.87%.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarter Return
 
Lowest Quarter Return
 
Q4 2018
36.24%
 
Q1 2012
-32.94
 %
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURN (for periods ended December 31, 2019)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock
The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Class H Prospectus | Inverse NASDAQ-100 2x Strategy Fund | NASDAQ 100 Index  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses or taxes)
Label rr_AverageAnnualReturnLabel NASDAQ-100 Index® (reflects no deduction for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 39.46%
5 Years rr_AverageAnnualReturnYear05 16.91%
10 Years rr_AverageAnnualReturnYear10 18.07%
Class H Prospectus | Inverse NASDAQ-100 2x Strategy Fund | Class H  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol RYVNX
Shareholder Fee, Other rr_ShareholderFeeOther none
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.90%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.72% [4]
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 1.87%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 190
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 588
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,011
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,190
Annual Return 2010 rr_AnnualReturn2010 (39.26%)
Annual Return 2011 rr_AnnualReturn2011 (22.92%)
Annual Return 2012 rr_AnnualReturn2012 (34.84%)
Annual Return 2013 rr_AnnualReturn2013 (49.55%)
Annual Return 2014 rr_AnnualReturn2014 (34.44%)
Annual Return 2015 rr_AnnualReturn2015 (25.28%)
Annual Return 2016 rr_AnnualReturn2016 (19.77%)
Annual Return 2017 rr_AnnualReturn2017 (44.28%)
Annual Return 2018 rr_AnnualReturn2018 (9.71%)
Annual Return 2019 rr_AnnualReturn2019 (50.05%)
Year to Date Return, Label rr_YearToDateReturnLabel year-to-date return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2020
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn (45.87%)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarter Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2018
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 36.24%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarter Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2012
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (32.94%)
Label rr_AverageAnnualReturnLabel Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 (50.05%)
5 Years rr_AverageAnnualReturnYear05 (31.52%)
10 Years rr_AverageAnnualReturnYear10 (34.21%)
Class H Prospectus | Inverse NASDAQ-100 2x Strategy Fund | Class H | After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions
1 Year rr_AverageAnnualReturnYear01 (50.06%)
5 Years rr_AverageAnnualReturnYear05 (31.52%)
10 Years rr_AverageAnnualReturnYear10 (34.21%)
Class H Prospectus | Inverse NASDAQ-100 2x Strategy Fund | Class H | After Taxes on Distributions and Sales  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions and Sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 (29.63%)
5 Years rr_AverageAnnualReturnYear05 (18.81%)
10 Years rr_AverageAnnualReturnYear10 (12.96%)
Class H Prospectus | Dow 2x Strategy Fund  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading DOW 2X STRATEGY FUND
Supplement [Text Block] ck0001092720_SupplementTextBlock
IMPORTANT INFORMATION ABOUT THE FUND
The Dow 2x Strategy Fund (the “Fund”) is very different from most other mutual funds in that it seeks daily leveraged investment results. As a result, the Fund may be riskier than alternatives that do not use leverage because the performance of an investment in the Fund is magnified.

The effect of leverage on the Fund will generally cause the Fund’s performance to not match the performance of the Fund’s benchmark (as described below) over a period of time greater than a single trading day. This means that the return of the Fund for a period of longer than a single trading day will be the result of each day’s compounded returns over the period, which will very likely differ from twice the return of the Fund’s underlying index (as defined below) for that period. As a consequence, especially in periods of market volatility, the path or trend of the benchmark during the longer period may be at least as important to the Fund’s cumulative return for the longer period as the cumulative return of the benchmark for the relevant longer period. Further, the return for investors who invest for a period longer than a single trading day will not be the product of the return of the Fund’s stated investment goal (i.e., 2x) and the cumulative performance of the benchmark.

The Fund is not suitable for all investors. The Fund should be utilized only by investors who (a) understand the risks associated with the use of leverage, (b) understand the consequences of seeking daily leveraged investment results, and (c) intend to actively monitor and manage their investments. Investors who do not meet these criteria should not buy shares of the Fund. An investment in the Fund is not a complete investment program.

Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund seeks to provide investment results that match, before fees and expenses, the performance of a specific benchmark on a daily basis. The Fund’s current benchmark is 200% of the performance of the Dow Jones Industrial Average® (the “underlying index”). The Fund does not seek to achieve its investment objective over a period of time greater than one day.
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES OF THE FUND
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold Class H shares of the Fund.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading PORTFOLIO TURNOVER
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Total Annual Fund Operating Expenses or the Example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 126% of the average value of its portfolio. The Fund’s portfolio turnover rate is calculated without regard to cash instruments and most derivatives. If such instruments were included, the Fund’s portfolio turnover rate might be significantly higher.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 126.00%
Expense Example [Heading] rr_ExpenseExampleHeading EXAMPLE
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund employs as its investment strategy a program of investing in the common stock of companies that are generally within the capitalization range of the underlying index and derivative instruments, which primarily consist of equity index swaps and swaps on exchange-traded funds ("ETFs"), futures contracts, and options on securities, futures contracts, and stock indices. While the Fund may write (sell) and purchase swaps, it expects primarily to purchase swaps. Swap agreements and futures and options contracts, if used properly, may enable the Fund to meet its objective by increasing the Fund’s exposure to the securities included in the underlying index or in the same proportion that those securities are represented in the Fund's benchmark. The Advisor attempts to consistently apply leverage to increase the Fund's exposure to 200% of the underlying index, and expects to rebalance the Fund's holdings daily to maintain such exposure. The Fund’s use of derivatives and the leveraged investment exposure created by such use are expected to be significant. Certain of the Fund’s derivatives investments may be traded in the over-the-counter (“OTC”) market. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus any borrowings for investment purposes, in financial instruments with economic characteristics that should perform similarly to the securities of companies in the underlying index.

The Dow Jones Industrial Average® is a price-weighted index of 30 “blue chip” U.S. stocks, which generally represent large-capitalization companies with a capitalization range of $28.8 billion to $1,577.4 billion as of June 30, 2020. To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time. While the Fund's sector exposure may vary over time, as of June 30, 2020, the Fund has significant exposure to the Consumer Discretionary Sector, Consumer Staples Sector, Financials Sector, Health Care Sector, Industrials Sector, and Information Technology Sector, as each sector is defined by the Global Industry Classification Standard, a widely recognized industry classification methodology developed by MSCI, Inc. and Standard & Poor's Financial Services LLC.

On a day-to-day basis, the Fund may hold U.S. government securities or cash equivalents. The Fund also may enter into repurchase agreements with counterparties that are deemed to present acceptable credit risks. In an effort to ensure that the Fund is fully invested on a day-to-day basis, the Fund may conduct any necessary trading activity at or just prior to the close of the U.S. financial markets. The Fund is non-diversified and, therefore, may invest a greater percentage of its assets in a particular issuer in comparison to a diversified fund.

Investments in derivative instruments, such as futures, options and swap agreements, have the economic effect of creating financial leverage in the Fund’s portfolio because such investments may give rise to losses that exceed the amount the Fund has invested in those instruments. Financial leverage will magnify, sometimes significantly, the Fund’s exposure to any increase or decrease in prices associated with a particular reference asset resulting in increased volatility in the value of the Fund’s portfolio. The value of the Fund’s portfolio is likely to experience greater volatility over short-term periods. While such financial leverage has the potential to produce greater gains, it also may result in greater losses, which in some cases may cause the Fund to liquidate other portfolio investments at a loss to comply with limits on leverage and asset segregation requirements imposed by the Investment Company Act of 1940 or to meet redemption requests.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time.
Risk [Heading] rr_RiskHeading PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money. In addition to this risk, the Fund is subject to the principal risks described below.

COMPOUNDING RISKIn addition to the correlation risks described under “Correlation Risk,” the Fund’s returns are subject to the effects of compounding, which generally will cause the Fund’s performance to not correlate to the performance of the benchmark over periods greater than a single day, before accounting for fees and fund expenses. Compounded returns are the result of reinvesting daily returns over periods greater than a single day. The Fund’s compounded returns for periods greater than a single day will be different than the performance of the benchmark over the same period. The effects of compounding on the performance of the Fund will be more pronounced when the underlying index experiences increased volatility, the greater the leverage employed in the Fund, and over longer holding periods.

Compounding affects the performance of all investments over time, but has a more significant effect on a leveraged index fund because the magnified changes in performance produced by the use of leverage lead to greater increases and decreases in the fund’s daily returns which are then compounded over time. The effects of compounding, therefore, have a more significant effect on the Fund because it seeks to match a multiple of the performance of the Fund’s underlying index on a daily basis.

Fund performance for periods greater than one day can be estimated given any set of assumptions for the following factors: (a) underlying index performance; (b) underlying index volatility; (c) financing rates associated with leverage; (d) other Fund expenses; (e) dividends or interest paid by companies in the underlying index; and (f) period of time. The table below illustrates the impact of two principal factors – volatility and index performance – on Fund performance. The table shows estimated Fund returns for a number of combinations of performance and volatility over a one-year period. Performance shown in the table assumes: (a) no dividends paid by the companies included in the underlying index; (b) no Fund expenses; and (c) a cost of leverage of zero percent. If Fund expenses, including the cost of leverage, were included, the Fund’s performance would be lower than shown.
 
Areas shaded lighter represent those scenarios where the Fund can be expected to return more than twice the performance of the underlying index; conversely, areas shaded darker represent those scenarios where the Fund can be expected to return less than twice the performance of the underlying index.
Index Performance
Annualized Volatility
1x
2x
10%
25%
50%
75%
100%
-60%
-120%
-84%
-85%
-88%
-91%
-94%
-50%
-100%
-75%
-77%
-81%
-86%
-91%
-40%
-80%
-65%
-66%
-72%
-80%
-87%
-30%
-60%
-52%
-54%
-62%
-72%
-82%
-20%
-40%
-37%
-41%
-49%
-64%
-78%
-10%
-20%
-20%
-24%
-37%
-55%
-71%
0%
0%
-1%
-5%
-22%
-43%
-65%
10%
20%
19%
14%
-5%
-31%
-58%
20%
40%
42%
36%
11%
-15%
-47%
30%
60%
67%
59%
32%
-3%
-38%
40%
80%
93%
84%
52%
11%
-28%
50%
100%
122%
111%
76%
28%
-20%
60%
120%
154%
140%
100%
44%
-10%

The underlying index’s annualized historical volatility rate for the five-year period ended June 30, 2020 is 15.11%. The underlying index’s highest one-year volatility rate during the five-year period is 22.40%. The underlying index’s annualized performance for the five-year period ended June 30, 2020 is 10.62%.

Historical underlying index volatility and performance are not indications of what the underlying index volatility and performance will be in the future. The table is intended to isolate the effects of the underlying index volatility and index performance on the return of the Fund, and underscore that the Fund is designed as a short-term trading vehicle for investors who intend to actively monitor and manage their portfolios.

CORRELATION RISK—A number of factors may affect the Fund’s ability to achieve a high degree of correlation with its benchmark, including instances in which the Fund does not hold or have exposure to each component security of the underlying index and the effect of compounding on the Fund’s returns, and there can be no guarantee that the Fund will achieve a high degree of correlation. Failure to achieve a high degree of correlation may prevent the Fund from achieving its investment objective. The Fund does not attempt to, and should not be expected to, provide returns which are a multiple of the returns of the underlying index for periods other than a single day. The risk of the Fund not achieving its daily investment objective will be more acute when the underlying index has an extreme one-day movement approaching 50%. In addition, as a result of compounding, the Fund’s performance for periods greater than a single day is likely to be either greater than or less than the performance of the underlying index times the stated multiple in the Fund’s investment objective, before accounting for Fund fees and expenses.

COUNTERPARTY CREDIT RISK—The Fund may invest in financial instruments involving counterparties that attempt to gain exposure to a particular group of securities, index or asset class without actually purchasing those securities or investments, or to hedge a position. The Fund’s use of such financial instruments, including swap agreements, involves risks that are different from those associated with ordinary portfolio securities transactions. For example, the Fund is exposed to the risk that the counterparty may be unwilling or unable to make timely payments to meet its contractual obligations or may fail to return holdings that are subject to the agreement with the counterparty. If the counterparty becomes bankrupt or defaults on its payment obligations to the Fund, the Fund may not receive the full amount that it is entitled to receive. If this occurs, the value of your shares in the Fund will decrease.

DERIVATIVES RISK—The Fund’s investments in derivatives may pose risks in addition to and greater than those associated with investing directly in securities or other investments, including risks relating to leverage, imperfect correlations with underlying investments or the Fund’s other portfolio holdings, high price volatility, lack of availability, counterparty credit, liquidity, valuation and legal restrictions. Their use is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. If the Advisor 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. Certain risks are specific to the derivatives in which the Fund invests.

SWAP AGREEMENTS RISK—Swap agreements are contracts among the Fund and a counterparty to exchange the return of the pre-determined underlying investment (such as the rate of return of the underlying index). Swap agreements may be negotiated bilaterally and traded OTC between two parties or, in some instances, must be transacted through a futures commission merchant and cleared through a clearinghouse that serves as a central counterparty. Risks associated with the use of swap agreements are different from those associated with ordinary portfolio securities transactions, due in part to the fact they could be considered illiquid and many swaps trade on the OTC market. Swaps are particularly subject to counterparty credit, correlation, valuation, liquidity and leveraging risks. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity, but central clearing does not make swap transactions risk-free.

FUTURES CONTRACTS RISK—Futures contracts are typically exchange-traded contracts that call for the future delivery of an asset at a certain price and date, or cash settlement of the terms of the contract. Risks of futures contracts may be caused by an imperfect correlation between movements in the price of the instruments and the price of the underlying securities. In addition, there is the risk that the Fund may not be able to enter into a closing transaction because of an illiquid market. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value ("NAV"). Futures also are subject to leverage risks and to liquidity risk.

OPTIONS CONTRACTS RISK—Options or options on futures contracts give the holder of the option the right to buy (or to sell) a position in a security or in a contract to the writer of the option, at a certain price. They are subject to correlation risk because there may be an imperfect correlation between the options and the securities markets that cause a given transaction to fail to achieve its objectives. The successful use of options depends on the Advisor’s ability to correctly predict future price fluctuations and the degree of correlation between the options and securities markets. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Options also are particularly subject to leverage risk and can be subject to liquidity risk.

EARLY CLOSING RISK—The Fund is subject to the risk that unanticipated early closings of securities exchanges and other financial markets may result in the Fund’s inability to buy or sell securities or other financial instruments on that day and may cause the Fund to incur substantial trading losses.

EQUITY RISK—The Fund is subject to the risk that the value of the equity securities and equity-based derivatives in the Fund’s portfolio will decline due to volatility in the equity market caused by general market and economic conditions, perceptions regarding particular industries represented in the equity market, or factors relating to specific companies to which the Fund has investment exposure.

INDUSTRY CONCENTRATION RISK—The Fund may concentrate (i.e., invest more than 25% of its net assets) its investments in a limited number of issuers conducting business in the same industry or group of related industries. To the extent the Fund does so, the Fund is more vulnerable to adverse market, economic, regulatory, political or other developments affecting that industry or group of related industries than a fund that invests its assets more broadly. The industries in which the underlying index components, and thus the Fund's assets, may be concentrated will vary as the composition of the underlying index changes over time.

INTEREST RATE RISK—The market value of fixed income investments and related financial instruments will change in response to interest rate changes. During periods of falling interest rates, the values of fixed income securities generally rise. Conversely, during periods of rising interest rates, the values of such securities generally decline. Securities with greater interest rate sensitivity and longer maturities generally are subject to greater fluctuations in value. The Fund may invest in variable and floating rate securities. Although these instruments are generally less sensitive to interest rate changes than fixed rate instruments, the value of floating rate and variable securities may decline if their interest rates do not rise as quickly, or as much, as general interest rates. Changes in government or central bank policy, including changes in tax policy or changes in a central bank’s implementation of specific policy goals, may have a substantial impact on interest rates, and could have an adverse effect on prices for fixed income securities and on the performance of the Fund. In particular, interest rates in the U.S. are at or near historically low levels and as a result, fixed income securities markets may experience heightened levels of interest rate risk. Any unexpected or sudden reversal of the fiscal policy underlying current interest rate levels could adversely affect the value of the Fund. There can be no guarantee that any particular government or central bank policy will be continued, discontinued or changed, nor that any such policy will have the desired effect on interest rates.

LARGE-CAPITALIZATION SECURITIES RISK—The Fund is subject to the risk that large-capitalization stocks may underperform other segments of the equity market or the equity market as a whole. Larger, more established companies may be unable to respond quickly to new competitive challenges such as changes in technology and may not be able to attain the high growth rate of smaller companies, especially during extended periods of economic expansion.

LEVERAGING RISK—The Fund achieves leveraged exposure to the underlying index through the use of derivative instruments.  The more the Fund invests in leveraged instruments, the more this leverage will magnify any losses on those investments. The Fund’s investment in these instruments generally requires a small investment relative to the amount of investment exposure assumed.  As a result, such investments may give rise to losses that exceed the amount invested in those instruments. Since the Fund’s investment strategy involves consistently applied leverage, the value of the Fund’s shares will tend to increase or decrease more than the value of any increase or decrease in the underlying index. Leverage also will have the effect of magnifying tracking error.

LIQUIDITY AND VALUATION RISK—In certain circumstances, it may be difficult for the Fund to purchase and sell a particular investment within a reasonable time at a fair price, or the price at which it has been valued by the Advisor for purposes of the Fund's NAV, causing the Fund to be less liquid. While the Fund intends to invest in liquid securities and financial instruments, under certain market conditions, such as when trading in a particular investment has been halted temporarily by an exchange because the maximum price change of that investment has been realized, it may be difficult or impossible for the Fund to liquidate such investments. In addition, the ability of the Fund to assign an accurate daily value to certain investments may be difficult, and the Advisor may be required to fair value the investments.

MARKET RISK—The market value of the securities and derivatives held by the Fund may fluctuate over time in response to factors affecting individual companies or other factors such as changing economic, political or financial markets.

NON-DIVERSIFICATION RISK—The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).

OTC TRADING RISK—Certain of the derivatives in which the Fund may invest may be traded (and privately negotiated) in the OTC market. While the OTC derivatives market is the primary trading venue for many derivatives, it is largely unregulated and provides for less transparency than a national securities or commodities exchange. As a result and similar to other privately negotiated contracts, the Fund is subject to counterparty credit risk with respect to such derivatives contracts.

PASSIVE INVESTMENT RISK—The Fund is not actively managed and the Advisor does not attempt to take defensive positions in declining markets. Therefore, the Fund may be subject to greater losses in a declining market than a fund that is actively managed.

PORTFOLIO TURNOVER RISK—Periodic rebalancing of the Fund's holdings pursuant to its daily investment objective may lead to a greater number of portfolio transactions in the Fund than experienced by other mutual funds. Such frequent and active trading may lead to significantly higher transaction costs because of increased broker commissions associated with such transactions.

REGULATORY AND LEGAL RISK—U.S. and non-U.S. governmental agencies and other regulators regularly implement additional 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 (such as regulations related to investments in derivatives and other transactions). These regulations and laws impact the investment strategies, performance, costs and operations of the Fund or taxation of shareholders.

REPURCHASE AGREEMENT RISK—The Fund’s investment in repurchase agreements may be subject to market and credit risk with respect to the collateral securing the repurchase agreements. Investments in repurchase agreements also may be subject to the risk that the market value of the underlying obligations may decline prior to the expiration of the repurchase agreement term.

SECTOR RISK—The Fund is subject to the Sector Risks described below.

Consumer Discretionary Sector Risk. The Fund’s investments are exposed to issuers conducting business in the Consumer Discretionary Sector. The manufacturing segment of the Consumer Discretionary Sector includes automotive, household durable goods, leisure equipment and textiles and apparel. The services segment includes hotels, restaurants and other leisure facilities, media production and services, and consumer retailing and services. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Consumer Discretionary Sector.  The performance of companies operating in the Consumer Discretionary Sector has historically been closely tied to the performance of the overall economy, and also is affected by economic growth, consumer confidence, attitudes and spending. Changes in demographics and consumer tastes also can affect the demand for, and success of, consumer products and services in the marketplace. Moreover, the Consumer Discretionary Sector encompasses those businesses that tend to be the most sensitive to economic cycles.

Consumer Staples Sector Risk. The Fund’s investments are exposed to issuers conducting business in the Consumer Staples Sector. The Consumer Staples Sector includes manufacturers and distributors of food, beverages and tobacco and producers of non-durable household goods and personal products. It also includes food and drug retailing companies as well as hypermarkets and consumer super centers. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Consumer Staples Sector. The performance of companies operating in the Consumer Staples Sector has historically been closely tied to the performance of the overall economy, and also is affected by consumer confidence, demands and preferences, and spending. In addition, companies in the Consumer Staples Sector may be subject to risks pertaining to the supply of, demand for, and prices of raw materials.

Financials Sector Risk. The Fund's investments are exposed to issuers conducting business in the Financials Sector. The Financials Sector includes companies involved in banking, thrifts and mortgage finance, specialized finance, consumer finance, asset management and custody banks, investment banking and brokerage, and insurance. It also includes the Financial Exchanges & Data and Mortgage Real Estate Investment Trusts (REITs) sub-industries. Certain Financials Sector issuers serve as counterparties with which the Fund may enter into derivatives agreements or other similar contractual arrangements. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Financials Sector, which may adversely affect a company's ability to fulfill its obligations as a financial counterparty. Companies operating in the Financials Sector are subject to extensive government regulation, which may limit the financial commitments they can make and the interest rates and fees they can charge. Profitability is largely dependent on the availability and cost of capital funds, and may fluctuate significantly when interest rates change or due to increased competition.

Health Care Sector Risk.  The Fund's investments are exposed to issuers conducting business in the Health Care Sector. The Health Care Sector includes health care providers and services, companies that manufacture and distribute health care equipment and supplies, and health care technology companies. It also includes companies involved in the research, development, production and marketing of pharmaceuticals and biotechnology products. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Health Care Sector. The prices of the securities of companies operating in the Health Care Sector are closely tied to government regulation and approval of their products and services, which can have a significant effect on the price and availability of those products and services.

Industrials Sector Risk. The Fund's investments are exposed to issuers conducting business in the Industrials Sector. The Industrials Sector includes manufacturers and distributors of capital goods such as aerospace and defense, building projects, electrical equipment and machinery, and companies that offer construction and engineering services. It also includes providers of commercial and professional services including printing, environmental and facilities services, office services and supplies, security and alarm services, human resource and employment services, and research and consulting services. It also includes companies that provide transportation services. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Industrials Sector. The prices of the securities of companies operating in the Industrials Sector may fluctuate due to the level and volatility of commodity prices, the exchange value of the dollar, import controls, worldwide competition, liability for environmental damage, depletion of resources, and mandated expenditures for safety and pollution control devices.

Information Technology Sector Risk. The Fund's investments are exposed to issuers conducting business in the Information Technology Sector. The Information Technology Sector includes companies that offer software and information technology services, manufacturers and distributors of technology hardware and equipment such as communications equipment, cellular phones, computers and peripherals, electronic equipment and related instruments and semiconductors. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Information Technology Sector. The prices of the securities of companies operating in the Information Technology Sector are closely tied to market competition, increased sensitivity to short product cycles and aggressive pricing, and problems with bringing products to market.

SHAREHOLDER TRADING RISK—The Fund may be used as a tool for certain investors that employ trading strategies involving frequent trading. Such trading strategies may lead to increased portfolio turnover in the Fund, higher transaction costs, and the possibility of increased short-term capital gains (which will be taxable to shareholders as ordinary income when distributed to them) and/or long-term capital gains. Large movements of assets into and out of the Fund due to active or frequent trading also may adversely affect the Fund's ability to achieve its investment objective.

TEMPORARY DEFENSIVE INVESTMENT RISK—The Advisor generally does not attempt to take defensive positions in the Fund in declining markets. Therefore, the Fund may be subject to greater losses in a declining market than a fund that does take defensive positions in declining markets.

TRACKING ERROR RISK—The Advisor may not be able to cause the Fund’s performance to match that of the Fund’s benchmark, either on a daily or aggregate basis. Factors such as Fund expenses, imperfect correlation between the Fund’s investments and those of the underlying index, rounding of share prices, changes to the composition of the underlying index, regulatory policies, high portfolio turnover rate, and the use of leverage all contribute to tracking error. Tracking error may cause the Fund’s performance to be less than you expect.

TRADING HALT RISK—The Fund typically will hold futures contracts and short-term options. The major exchanges on which these contracts are traded, such as the Chicago Mercantile Exchange, have established limits on how much the trading price of a futures contract or option may decline over various time periods within a day, and may halt trading in a contract that exceeds such limits. If a trading halt occurs, the Fund may temporarily be unable to purchase or sell certain securities, futures contracts or options. Such a trading halt near the time the Fund prices its shares may limit the Fund’s ability to use leverage and fully invest its assets, which could increase tracking error and adversely affect performance, and may prevent the Fund from achieving its investment objective.

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. The value of U.S. government securities will fluctuate and such securities are subject to the risks associated with fixed-income and debt securities, particularly interest rate and credit risk.

Risk Lose Money [Text] rr_RiskLoseMoney As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund. The following table shows the performance of the Class H shares of the Fund as an average over different periods of time in comparison to the performance of a broad-based market index. The figures in the bar chart and table assume the reinvestment of dividends and capital gains distributions. Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Updated performance information is available on the Fund’s website at www.guggenheiminvestments.com or by calling 800.820.0888.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800.820.0888
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.guggenheiminvestments.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.
Bar Chart Narrative [Text Block] rr_BarChartNarrativeTextBlock
The performance information shown below for Class H shares is based on a calendar year. The year-to-date return for the period from January 1, 2020 through June 30, 2020 is -27.37%.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarter Return
 
Lowest Quarter Return
 
Q4 2011
24.43%
 
Q3 2011
-24.15
 %
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURN (for periods ended December 31, 2019)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock
The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Class H Prospectus | Dow 2x Strategy Fund | Dow Jones Industrial Average  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses or taxes)
Label rr_AverageAnnualReturnLabel Dow Jones Industrial Average® (reflects no deduction for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 25.34%
5 Years rr_AverageAnnualReturnYear05 12.59%
10 Years rr_AverageAnnualReturnYear10 13.40%
Class H Prospectus | Dow 2x Strategy Fund | Class H  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol RYCVX
Shareholder Fee, Other rr_ShareholderFeeOther none
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.90%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.73% [5]
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 1.88%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 191
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 591
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,016
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,201
Annual Return 2010 rr_AnnualReturn2010 22.36%
Annual Return 2011 rr_AnnualReturn2011 8.42%
Annual Return 2012 rr_AnnualReturn2012 16.34%
Annual Return 2013 rr_AnnualReturn2013 61.52%
Annual Return 2014 rr_AnnualReturn2014 16.39%
Annual Return 2015 rr_AnnualReturn2015 (4.63%)
Annual Return 2016 rr_AnnualReturn2016 30.05%
Annual Return 2017 rr_AnnualReturn2017 57.88%
Annual Return 2018 rr_AnnualReturn2018 (13.85%)
Annual Return 2019 rr_AnnualReturn2019 47.46%
Year to Date Return, Label rr_YearToDateReturnLabel year-to-date return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2020
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn (27.37%)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarter Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2011
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 24.43%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarter Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (24.15%)
Label rr_AverageAnnualReturnLabel Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 47.46%
5 Years rr_AverageAnnualReturnYear05 19.99%
10 Years rr_AverageAnnualReturnYear10 21.85%
Class H Prospectus | Dow 2x Strategy Fund | Class H | After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions
1 Year rr_AverageAnnualReturnYear01 45.73%
5 Years rr_AverageAnnualReturnYear05 18.50%
10 Years rr_AverageAnnualReturnYear10 21.09%
Class H Prospectus | Dow 2x Strategy Fund | Class H | After Taxes on Distributions and Sales  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions and Sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 28.31%
5 Years rr_AverageAnnualReturnYear05 15.47%
10 Years rr_AverageAnnualReturnYear10 18.59%
Class H Prospectus | Inverse Dow 2x Strategy Fund  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading INVERSE DOW 2X STRATEGY FUND
Supplement [Text Block] ck0001092720_SupplementTextBlock
IMPORTANT INFORMATION ABOUT THE FUND
The Inverse Dow 2x Strategy Fund (the “Fund”) is very different from most other mutual funds in that it seeks to provide leveraged investment results that match twice the inverse of the performance of a specific underlying index on a daily basis, a result opposite of most mutual funds. As a result, the Fund may be riskier than alternatives that do not use leverage because the performance of an investment in the Fund is magnified.

The effect of leverage on the Fund will generally cause the Fund’s performance to not match the performance of the Fund’s benchmark (as described below) over a period of time greater than a single trading day. This means that the return of the Fund for a period of longer than a single trading day will be the result of each day’s compounded returns over the period, which will very likely differ from twice the inverse return of the Fund’s underlying index (as defined below) for that period. As a consequence, especially in periods of market volatility, the path or trend of the benchmark during the longer period may be at least as important to the Fund’s cumulative return for the longer period as the cumulative return of the benchmark for the relevant longer period. Further, the return for investors who invest for a period longer than a single trading day will not be the product of the return of the Fund’s stated investment goal (i.e., -2x) and the cumulative performance of the benchmark.

The Fund is not suitable for all investors. The Fund should be utilized only by investors who (a) understand the risks associated with the use of leverage, (b) understand the consequences of seeking daily leveraged investment results, (c) understand the risks of shorting and (d) intend to actively monitor and manage their investments. Investors who do not meet these criteria should not buy shares of the Fund. An investment in the Fund is not a complete investment program.
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund seeks to provide investment results that match, before fees and expenses, the performance of a specific benchmark on a daily basis. The Fund’s current benchmark is 200% of the inverse (opposite) of the performance of the Dow Jones Industrial Average® (the “underlying index”). The Fund does not seek to achieve its investment objective over a period of time greater than one day.
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES OF THE FUND
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold Class H shares of the Fund.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading PORTFOLIO TURNOVER
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Total Annual Fund Operating Expenses or the Example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 0% of the average value of its portfolio. The Fund’s portfolio turnover rate is calculated without regard to cash instruments and most derivatives. If such instruments were included, the Fund’s portfolio turnover rate might be significantly higher.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate none
Expense Example [Heading] rr_ExpenseExampleHeading EXAMPLE
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund employs as its investment strategy a program of engaging in short sales of securities generally included in the underlying index and investing in derivative instruments, which primarily consist of equity index swaps and swaps on exchange-traded funds, futures contracts, and options on securities, securities indices, and futures contracts. While the Fund may write (sell) and purchase swaps, it expects primarily to write swaps. The Advisor attempts to consistently apply leverage to increase the Fund's exposure to -200% of the underlying index, and expects to rebalance the Fund's holdings daily to maintain such exposure. The Fund’s investment in derivatives serves as a substitute for directly selling short each of the securities included in the underlying index. Certain of the Fund’s derivatives investments may be traded in the over-the-counter (“OTC”) market. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus any borrowings for investment purposes, in financial instruments with economic characteristics that should perform opposite to the securities of companies included in the underlying index.

The Dow Jones Industrial Average® is a price-weighted index of 30 “blue chip” U.S. stocks, which generally represent large-capitalization companies with a capitalization range of $28.8 billion to $1,577.4 billion as of June 30, 2020. To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time. While the Fund's sector exposure may vary over time, as of June 30, 2020, the Fund has significant exposure to the Consumer Discretionary Sector, Consumer Staples Sector, Financials Sector, Health Care Sector, Industrials Sector, and Information Technology Sector, as each sector is defined by the Global Industry Classification Standard, a widely recognized industry classification methodology developed by MSCI, Inc. and Standard & Poor's Financial Services LLC.

On a day-to-day basis, the Fund may hold U.S. government securities or cash equivalents. The Fund also may enter into repurchase agreements with counterparties that are deemed to present acceptable credit risks. In an effort to ensure that the Fund is fully invested on a day-to-day basis, the Fund may conduct any necessary trading activity at or just prior to the close of the U.S. financial markets. The Fund is non-diversified and, therefore, may invest a greater percentage of its assets in a particular issuer in comparison to a diversified fund.

Investments in derivative instruments, such as futures, options and swap agreements, have the economic effect of creating financial leverage in the Fund’s portfolio because such investments may give rise to losses that exceed the amount the Fund has invested in those instruments. Financial leverage will magnify, sometimes significantly, the Fund’s exposure to any increase or decrease in prices associated with a particular reference asset resulting in increased volatility in the value of the Fund’s portfolio. The value of the Fund’s portfolio is likely to experience greater volatility over short-term periods. While such financial leverage has the potential to produce greater gains, it also may result in greater losses, which in some cases may cause the Fund to liquidate other portfolio investments at a loss to comply with limits on leverage and asset segregation requirements imposed by the Investment Company Act of 1940 or to meet redemption requests.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time.
Risk [Heading] rr_RiskHeading PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money. In addition to this risk, the Fund is subject to the principal risks described below.

COMPOUNDING RISKIn addition to the correlation risks described under “Correlation Risk,” the Fund’s returns are subject to the effects of compounding, which generally will cause the Fund’s performance to not correlate to the performance of the benchmark over periods greater than a single day, before accounting for fees and fund expenses. Compounded returns are the result of reinvesting daily returns over periods greater than a single day. The Fund’s compounded returns for periods greater than a single day will be different than the performance of the benchmark over the same period. The effects of compounding on the performance of the Fund will be more pronounced when the underlying index experiences increased volatility, the greater the leverage employed in the Fund, and over longer holding periods.

Compounding affects the performance of all investments over time, but has a more significant effect on a leveraged index fund because the magnified changes in performance produced by the use of leverage lead to greater increases and decreases in the fund’s daily returns which are then compounded over time. The effects of compounding, therefore, have a more significant effect on the Fund because it seeks to match a multiple of the inverse performance of the Fund’s underlying index on a daily basis.

Fund performance for periods greater than one day can be estimated given any set of assumptions for the following factors: (a) underlying index performance; (b) underlying index volatility; (c) financing rates associated with leverage; (d) other Fund expenses; (e) dividends or interest paid by companies in the underlying index; and (f) period of time. The table below illustrates the impact of two principal factors – volatility and index performance – on Fund performance. The table shows estimated Fund returns for a number of combinations of performance and volatility over a one-year period. Performance shown in the table assumes: (a) no dividends paid by the companies included in the underlying index; (b) no Fund expenses; and (c) a cost of leverage of zero percent. If Fund expenses, including the cost of leverage, were included, the Fund’s performance would be lower than shown.
 
Areas shaded lighter represent those scenarios where the Fund can be expected to return more than twice the inverse performance of the underlying index; conversely, areas shaded darker represent those scenarios where the Fund can be expected to return the same or less than twice the inverse performance of the underlying index.
Index Performance
Annualized Volatility
1x
-2x
10%
25%
50%
75%
100%
-60%
120%
506%
404%
199%
13%
-69%
-50%
100%
286%
229%
91%
-27%
-82%
-40%
80%
171%
128%
33%
-49%
-86%
-30%
60%
99%
70%
-1%
-62%
-90%
-20%
40%
52%
31%
-27%
-70%
-93%
-10%
20%
20%
3%
-42%
-77%
-94%
0%
0%
-3%
-18%
-52%
-81%
-96%
10%
-20%
-19%
-31%
-61%
-84%
-96%
20%
-40%
-32%
-43%
-67%
-87%
-97%
30%
-60%
-42%
-51%
-72%
-89%
-97%
40%
-80%
-50%
-58%
-75%
-91%
-97%
50%
-100%
-57%
-63%
-79%
-92%
-98%
60%
-120%
-62%
-68%
-82%
-93%
-98%

The underlying index’s annualized historical volatility rate for the five-year period ended June 30, 2020 is 15.11%. The underlying index’s highest one-year volatility rate during the five-year period is 22.40%. The underlying index’s annualized performance for the five-year period ended June 30, 2020 is 10.62%.

Historical underlying index volatility and performance are not indications of what the underlying index volatility and performance will be in the future. The table is intended to isolate the effects of the underlying index volatility and index performance on the return of the Fund, and underscore that the Fund is designed as a short-term trading vehicle for investors who intend to actively monitor and manage their portfolios.

CORRELATION RISK—A number of factors may affect the Fund’s ability to achieve a high degree of correlation with its benchmark, including instances in which the Fund does not hold or have exposure to each component security of the underlying index and the effect of compounding on the Fund’s returns, and there can be no guarantee that the Fund will achieve a high degree of correlation. Failure to achieve a high degree of correlation may prevent the Fund from achieving its investment objective. The Fund does not attempt to, and should not be expected to, provide returns which are an inverse multiple of the returns of the underlying index for periods other than a single day. The risk of the Fund not achieving its daily investment objective will be more acute when the underlying index has an extreme one-day movement approaching 50%. In addition, as a result of compounding, the Fund’s performance for periods greater than a single day is likely to be either greater than or less than the inverse of the performance of the underlying index times the stated multiple in the Fund’s investment objective, before accounting for Fund fees and expenses.

COUNTERPARTY CREDIT RISK—The Fund may invest in financial instruments involving counterparties that attempt to gain exposure to a particular group of securities, index or asset class without actually purchasing those securities or investments, or to hedge a position. The Fund’s use of such financial instruments, including swap agreements, involves risks that are different from those associated with ordinary portfolio securities transactions. For example, the Fund is exposed to the risk that the counterparty may be unwilling or unable to make timely payments to meet its contractual obligations or may fail to return holdings that are subject to the agreement with the counterparty. If the counterparty becomes bankrupt or defaults on its payment obligations to the Fund, the Fund may not receive the full amount that it is entitled to receive. If this occurs, the value of your shares in the Fund will decrease.

DERIVATIVES RISK—The Fund’s investments in derivatives may pose risks in addition to and greater than those associated with investing directly in securities or other investments, including risks relating to leverage, imperfect correlations with underlying investments or the Fund’s other portfolio holdings, high price volatility, lack of availability, counterparty credit, liquidity, valuation and legal restrictions. Their use is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. If the Advisor 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. Certain risks are specific to the derivatives in which the Fund invests.

SWAP AGREEMENTS RISK—Swap agreements are contracts among the Fund and a counterparty to exchange the return of the pre-determined underlying investment (such as the rate of return of the underlying index). Swap agreements may be negotiated bilaterally and traded OTC between two parties or, in some instances, must be transacted through a futures commission merchant and cleared through a clearinghouse that serves as a central counterparty. Risks associated with the use of swap agreements are different from those associated with ordinary portfolio securities transactions, due in part to the fact they could be considered illiquid and many swaps trade on the OTC market. Swaps are particularly subject to counterparty credit, correlation, valuation, liquidity and leveraging risks. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity, but central clearing does not make swap transactions risk-free.

FUTURES CONTRACTS RISK—Futures contracts are typically exchange-traded contracts that call for the future delivery of an asset at a certain price and date, or cash settlement of the terms of the contract. Risks of futures contracts may be caused by an imperfect correlation between movements in the price of the instruments and the price of the underlying securities. In addition, there is the risk that the Fund may not be able to enter into a closing transaction because of an illiquid market. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value ("NAV"). Futures also are subject to leverage risks and to liquidity risk.

OPTIONS CONTRACTS RISK—Options or options on futures contracts give the holder of the option the right to buy (or to sell) a position in a security or in a contract to the writer of the option, at a certain price. They are subject to correlation risk because there may be an imperfect correlation between the options and the securities markets that cause a given transaction to fail to achieve its objectives. The successful use of options depends on the Advisor’s ability to correctly predict future price fluctuations and the degree of correlation between the options and securities markets. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Options also are particularly subject to leverage risk and can be subject to liquidity risk.

EARLY CLOSING RISK—The Fund is subject to the risk that unanticipated early closings of securities exchanges and other financial markets may result in the Fund’s inability to buy or sell securities or other financial instruments on that day and may cause the Fund to incur substantial trading losses.

EQUITY RISK—The Fund is subject to the risk that the value of the equity securities and equity-based derivatives in the Fund’s portfolio will decline due to volatility in the equity market caused by general market and economic conditions, perceptions regarding particular industries represented in the equity market, or factors relating to specific companies to which the Fund has investment exposure.

INDUSTRY CONCENTRATION RISK—The Fund may concentrate (i.e., invest more than 25% of its net assets) its investments in a limited number of issuers conducting business in the same industry or group of related industries. To the extent the Fund does so, the Fund is more vulnerable to adverse market, economic, regulatory, political or other developments affecting that industry or group of related industries than a fund that invests its assets more broadly. The industries in which the underlying index components, and thus the Fund's assets, may be concentrated will vary as the composition of the underlying index changes over time.

INTEREST RATE RISK—The market value of fixed income investments and related financial instruments will change in response to interest rate changes. During periods of falling interest rates, the values of fixed income securities generally rise. Conversely, during periods of rising interest rates, the values of such securities generally decline. Securities with greater interest rate sensitivity and longer maturities generally are subject to greater fluctuations in value. The Fund may invest in variable and floating rate securities. Although these instruments are generally less sensitive to interest rate changes than fixed rate instruments, the value of floating rate and variable securities may decline if their interest rates do not rise as quickly, or as much, as general interest rates. Changes in government or central bank policy, including changes in tax policy or changes in a central bank’s implementation of specific policy goals, may have a substantial impact on interest rates, and could have an adverse effect on prices for fixed income securities and on the performance of the Fund. In particular, interest rates in the U.S. are at or near historically low levels and as a result, fixed income securities markets may experience heightened levels of interest rate risk. Any unexpected or sudden reversal of the fiscal policy underlying current interest rate levels could adversely affect the value of the Fund. There can be no guarantee that any particular government or central bank policy will be continued, discontinued or changed, nor that any such policy will have the desired effect on interest rates.

LARGE-CAPITALIZATION SECURITIES RISK—The Fund is subject to the risk that large-capitalization stocks may outperform other segments of the equity market or the equity market as a whole. Larger, more established companies may be unable to respond quickly to new competitive challenges such as changes in technology and may not be able to attain the high growth rate of smaller companies, especially during extended periods of economic expansion.

LEVERAGING RISK—The Fund achieves leveraged exposure to the underlying index through the use of derivative instruments.  The more the Fund invests in leveraged instruments, the more this leverage will magnify any losses on those investments. The Fund’s investment in these instruments generally requires a small investment relative to the amount of investment exposure assumed.  As a result, such investments may give rise to losses that exceed the amount invested in those instruments. Since the Fund’s investment strategy involves consistently applied leverage, the value of the Fund’s shares will tend to increase or decrease more than the value of any increase or decrease in the underlying index. Leverage also will have the effect of magnifying tracking error.

LIQUIDITY AND VALUATION RISK—In certain circumstances, it may be difficult for the Fund to purchase and sell a particular investment within a reasonable time at a fair price, or the price at which it has been valued by the Advisor for purposes of the Fund's NAV, causing the Fund to be less liquid. While the Fund intends to invest in liquid securities and financial instruments, under certain market conditions, such as when trading in a particular investment has been halted temporarily by an exchange because the maximum price change of that investment has been realized, it may be difficult or impossible for the Fund to liquidate such investments. In addition, the ability of the Fund to assign an accurate daily value to certain investments may be difficult, and the Advisor may be required to fair value the investments.

MARKET RISK—The market value of the securities and derivatives held by the Fund may fluctuate over time in response to factors affecting individual companies or other factors such as changing economic, political or financial markets.

NON-DIVERSIFICATION RISK—The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).

OTC TRADING RISK—Certain of the derivatives in which the Fund may invest may be traded (and privately negotiated) in the OTC market. While the OTC derivatives market is the primary trading venue for many derivatives, it is largely unregulated and provides for less transparency than a national securities or commodities exchange. As a result and similar to other privately negotiated contracts, the Fund is subject to counterparty credit risk with respect to such derivatives contracts.

PASSIVE INVESTMENT RISK—The Fund is not actively managed and the Advisor does not attempt to take defensive positions in rising markets. Therefore, the Fund may be subject to greater losses in a rising market than a fund that is actively managed.

PORTFOLIO TURNOVER RISK—Periodic rebalancing of the Fund's holdings pursuant to its daily investment objective may lead to a greater number of portfolio transactions in the Fund than experienced by other mutual funds. Such frequent and active trading may lead to significantly higher transaction costs because of increased broker commissions associated with such transactions.

REGULATORY AND LEGAL RISK—U.S. and non-U.S. governmental agencies and other regulators regularly implement additional 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 (such as regulations related to investments in derivatives and other transactions). These regulations and laws impact the investment strategies, performance, costs and operations of the Fund or taxation of shareholders.

REPURCHASE AGREEMENT RISK—The Fund’s investment in repurchase agreements may be subject to market and credit risk with respect to the collateral securing the repurchase agreements. Investments in repurchase agreements also may be subject to the risk that the market value of the underlying obligations may decline prior to the expiration of the repurchase agreement term.

SECTOR RISK—The Fund is subject to the Sector Risks described below.

Consumer Discretionary Sector Risk. The Fund’s investments are exposed to issuers conducting business in the Consumer Discretionary Sector. The manufacturing segment of the Consumer Discretionary Sector includes automotive, household durable goods, leisure equipment and textiles and apparel. The services segment includes hotels, restaurants and other leisure facilities, media production and services, and consumer retailing and services. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Consumer Discretionary Sector.  The performance of companies operating in the Consumer Discretionary Sector has historically been closely tied to the performance of the overall economy, and also is affected by economic growth, consumer confidence, attitudes and spending. Changes in demographics and consumer tastes also can affect the demand for, and success of, consumer products and services in the marketplace. Moreover, the Consumer Discretionary Sector encompasses those businesses that tend to be the most sensitive to economic cycles.

Consumer Staples Sector Risk. The Fund’s investments are exposed to issuers conducting business in the Consumer Staples Sector. The Consumer Staples Sector includes manufacturers and distributors of food, beverages and tobacco and producers of non-durable household goods and personal products. It also includes food and drug retailing companies as well as hypermarkets and consumer super centers. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Consumer Staples Sector. The performance of companies operating in the Consumer Staples Sector has historically been closely tied to the performance of the overall economy, and also is affected by consumer confidence, demands and preferences, and spending. In addition, companies in the Consumer Staples Sector may be subject to risks pertaining to the supply of, demand for, and prices of raw materials.

Financials Sector Risk. The Fund's investments are exposed to issuers conducting business in the Financials Sector. The Financials Sector includes companies involved in banking, thrifts and mortgage finance, specialized finance, consumer finance, asset management and custody banks, investment banking and brokerage, and insurance. It also includes the Financial Exchanges & Data and Mortgage Real Estate Investment Trusts (REITs) sub-industries. Certain Financials Sector issuers serve as counterparties with which the Fund may enter into derivatives agreements or other similar contractual arrangements. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Financials Sector, which may adversely affect a company's ability to fulfill its obligations as a financial counterparty. Companies operating in the Financials Sector are subject to extensive government regulation, which may limit the financial commitments they can make and the interest rates and fees they can charge. Profitability is largely dependent on the availability and cost of capital funds, and may fluctuate significantly when interest rates change or due to increased competition.

Health Care Sector Risk.  The Fund's investments are exposed to issuers conducting business in the Health Care Sector. The Health Care Sector includes health care providers and services, companies that manufacture and distribute health care equipment and supplies, and health care technology companies. It also includes companies involved in the research, development, production and marketing of pharmaceuticals and biotechnology products. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Health Care Sector. The prices of the securities of companies operating in the Health Care Sector are closely tied to government regulation and approval of their products and services, which can have a significant effect on the price and availability of those products and services.

Industrials Sector Risk. The Fund's investments are exposed to issuers conducting business in the Industrials Sector. The Industrials Sector includes manufacturers and distributors of capital goods such as aerospace and defense, building projects, electrical equipment and machinery, and companies that offer construction and engineering services. It also includes providers of commercial and professional services including printing, environmental and facilities services, office services and supplies, security and alarm services, human resource and employment services, and research and consulting services. It also includes companies that provide transportation services. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Industrials Sector. The prices of the securities of companies operating in the Industrials Sector may fluctuate due to the level and volatility of commodity prices, the exchange value of the dollar, import controls, worldwide competition, liability for environmental damage, depletion of resources, and mandated expenditures for safety and pollution control devices.

Information Technology Sector Risk. The Fund's investments are exposed to issuers conducting business in the Information Technology Sector. The Information Technology Sector includes companies that offer software and information technology services, manufacturers and distributors of technology hardware and equipment such as communications equipment, cellular phones, computers and peripherals, electronic equipment and related instruments and semiconductors. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Information Technology Sector. The prices of the securities of companies operating in the Information Technology Sector are closely tied to market competition, increased sensitivity to short product cycles and aggressive pricing, and problems with bringing products to market.

SHAREHOLDER TRADING RISK—The Fund may be used as a tool for certain investors that employ trading strategies involving frequent trading. Such trading strategies may lead to increased portfolio turnover in the Fund, higher transaction costs, and the possibility of increased short-term capital gains (which will be taxable to shareholders as ordinary income when distributed to them) and/or long-term capital gains. Large movements of assets into and out of the Fund due to active or frequent trading also may adversely affect the Fund's ability to achieve its investment objective.

SHORT SALES AND SHORT EXPOSURE 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. A short exposure through a derivative exposes the Fund to counterparty credit risk and leverage risk. The risk for loss on a short sale or other short exposure is greater than a direct investment in the security itself because the price of the borrowed security may rise, thereby increasing the price at which the security must be purchased. The risk of loss through a short sale or other short exposure may in some cases be theoretically unlimited. Government actions also may affect the Fund’s ability to engage in short selling.

TEMPORARY DEFENSIVE INVESTMENT RISK—The Advisor generally does not attempt to take defensive positions in the Fund in declining markets. Therefore, the Fund may be subject to greater losses in a declining market than a fund that does take defensive positions in declining markets.

TRACKING ERROR RISK—The Advisor may not be able to cause the Fund’s performance to match that of the Fund’s benchmark, either on a daily or aggregate basis. Factors such as Fund expenses, imperfect correlation between the Fund’s investments and those of the underlying index, rounding of share prices, changes to the composition of the underlying index, regulatory policies, high portfolio turnover rate, and the use of leverage all contribute to tracking error. Tracking error may cause the Fund’s performance to be less than you expect.

TRADING HALT RISK—The Fund typically will hold futures contracts and short-term options. The major exchanges on which these contracts are traded, such as the Chicago Mercantile Exchange, have established limits on how much the trading price of a futures contract or option may decline over various time periods within a day, and may halt trading in a contract that exceeds such limits. If a trading halt occurs, the Fund may temporarily be unable to purchase or sell certain securities, futures contracts or options. Such a trading halt near the time the Fund prices its shares may limit the Fund’s ability to use leverage and fully invest its assets, which could increase tracking error and adversely affect performance, and may prevent the Fund from achieving its investment objective.

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. The value of U.S. government securities will fluctuate and such securities are subject to the risks associated with fixed-income and debt securities, particularly interest rate and credit risk.

Risk Lose Money [Text] rr_RiskLoseMoney As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund. The following table shows the performance of the Class H shares of the Fund as an average over different periods of time in comparison to the performance of a broad-based market index. The figures in the bar chart and table assume the reinvestment of dividends and capital gains distributions. Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Updated performance information is available on the Fund’s website at www.guggenheiminvestments.com or by calling 800.820.0888.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800.820.0888
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.guggenheiminvestments.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.
Bar Chart Narrative [Text Block] rr_BarChartNarrativeTextBlock
The performance information shown below for Class H shares is based on a calendar year. The year-to-date return for the period from January 1, 2020 through June 30, 2020 is -16.99%.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarter Return
 
Lowest Quarter Return
 
Q4 2018
23.53%
 
Q3 2011
-25.69
 %
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURN (for periods ended December 31, 2019)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock
The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Class H Prospectus | Inverse Dow 2x Strategy Fund | Dow Jones Industrial Average  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses or taxes)
Label rr_AverageAnnualReturnLabel Dow Jones Industrial Average® (reflects no deduction for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 25.34%
5 Years rr_AverageAnnualReturnYear05 12.59%
10 Years rr_AverageAnnualReturnYear10 13.40%
Class H Prospectus | Inverse Dow 2x Strategy Fund | Class H  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol RYCWX
Shareholder Fee, Other rr_ShareholderFeeOther none
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.90%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.72% [6]
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 1.87%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 190
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 588
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,011
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,190
Annual Return 2010 rr_AnnualReturn2010 (30.65%)
Annual Return 2011 rr_AnnualReturn2011 (27.77%)
Annual Return 2012 rr_AnnualReturn2012 (22.89%)
Annual Return 2013 rr_AnnualReturn2013 (42.73%)
Annual Return 2014 rr_AnnualReturn2014 (21.92%)
Annual Return 2015 rr_AnnualReturn2015 (8.75%)
Annual Return 2016 rr_AnnualReturn2016 (30.79%)
Annual Return 2017 rr_AnnualReturn2017 (39.17%)
Annual Return 2018 rr_AnnualReturn2018 1.58%
Annual Return 2019 rr_AnnualReturn2019 (36.08%)
Year to Date Return, Label rr_YearToDateReturnLabel year-to-date return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2020
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn (16.99%)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarter Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2018
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 23.53%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarter Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (25.69%)
Label rr_AverageAnnualReturnLabel Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 (36.08%)
5 Years rr_AverageAnnualReturnYear05 (24.25%)
10 Years rr_AverageAnnualReturnYear10 (26.98%)
Class H Prospectus | Inverse Dow 2x Strategy Fund | Class H | After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions
1 Year rr_AverageAnnualReturnYear01 (36.13%)
5 Years rr_AverageAnnualReturnYear05 (24.26%)
10 Years rr_AverageAnnualReturnYear10 (26.99%)
Class H Prospectus | Inverse Dow 2x Strategy Fund | Class H | After Taxes on Distributions and Sales  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions and Sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 (21.36%)
5 Years rr_AverageAnnualReturnYear05 (15.61%)
10 Years rr_AverageAnnualReturnYear10 (12.25%)
Class H Prospectus | Russell 2000 2x Strategy Fund  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading RUSSELL 2000® 2X STRATEGY FUND
Supplement [Text Block] ck0001092720_SupplementTextBlock
IMPORTANT INFORMATION ABOUT THE FUND
The Russell 2000® 2x Strategy Fund (the “Fund”) is very different from most other mutual funds in that it seeks daily leveraged investment results.  As a result, the Fund may be riskier than alternatives that do not use leverage because the performance of an investment in the Fund is magnified.   

The effect of leverage on the Fund will generally cause the Fund’s performance to not match the performance of the Fund’s benchmark (as described below) over a period of time greater than a single trading day. This means that the return of the Fund for a period of longer than a single trading day will be the result of each day’s compounded returns over the period, which will very likely differ from twice the return of the Fund’s underlying index (as defined below) for that period. As a consequence, especially in periods of market volatility, the path or trend of the benchmark during the longer period may be at least as important to the Fund’s cumulative return for the longer period as the cumulative return of the benchmark for the relevant longer period.  Further, the return for investors who invest for a period longer than a single trading day will not be the product of the return of the Fund’s stated investment goal (i.e., 2x) and the cumulative performance of the benchmark. 

The Fund is not suitable for all investors.  The Fund should be utilized only by investors who (a) understand the risks associated with the use of leverage, (b) understand the consequences of seeking daily leveraged investment results, and (c) intend to actively monitor and manage their investments.  Investors who do not meet these criteria should not buy shares of the Fund. An investment in the Fund is not a complete investment program.
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund seeks to provide investment results that match, before fees and expenses, the performance of a specific benchmark on a daily basis. The Fund’s current benchmark is 200% of the performance of the Russell 2000® Index (the “underlying index”). The Fund does not seek to achieve its investment objective over a period of time greater than one day.
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES OF THE FUND
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold Class H shares of the Fund.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading PORTFOLIO TURNOVER
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Total Annual Fund Operating Expenses or the Example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 360% of the average value of its portfolio. The Fund’s portfolio turnover rate is calculated without regard to cash instruments and most derivatives. If such instruments were included, the Fund’s portfolio turnover rate might be significantly higher.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 360.00%
Expense Example [Heading] rr_ExpenseExampleHeading EXAMPLE
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund employs as its investment strategy a program of investing in the common stock of companies that are generally within the capitalization range of the underlying index and derivative instruments, which primarily consist of equity index swaps and swaps on exchange-traded funds ("ETFs"), futures contracts, and options on securities, futures contracts, and stock indices. While the Fund may write (sell) and purchase swaps, it expects primarily to purchase swaps. Swap agreements and futures and options contracts, if used properly, may enable the Fund to meet its objective by increasing the Fund’s exposure to the securities included in the underlying index or in the same proportion that those securities are represented in the Fund's benchmark. The Advisor attempts to consistently apply leverage to increase the Fund's exposure to 200% of the underlying index, and expects to rebalance the Fund's holdings daily to maintain such exposure. The Fund’s use of derivatives and the leveraged investment exposure created by such use are expected to be significant. Certain of the Fund’s derivatives investments may be traded in the over-the-counter (“OTC”) market. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus any borrowings for investment purposes, in financial instruments with economic characteristics that should perform similarly to the securities of companies in the underlying index.

The Russell 2000® Index is composed of the 2,000 smallest companies in the Russell 3000® Index, representing approximately 10% of the Russell 3000® total market capitalization and consisting of capitalizations ranging from $41 million to $12.4 billion as of June 30, 2020. The Russell 3000® Index is composed of the 3,000 largest U.S. companies ranked by total market capitalization, representing approximately 98% of the U.S. investable equity market. To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time. While the Fund's sector exposure may vary over time, as of June 30, 2020, the Fund has significant exposure to the Consumer Discretionary Sector, Financials Sector, Health Care Sector, Industrials Sector, Information Technology Sector, and Real Estate Sector, as each sector is defined by the Global Industry Classification Standard, a widely recognized industry classification methodology developed by MSCI, Inc. and Standard & Poor's Financial Services LLC.

On a day-to-day basis, the Fund may hold U.S. government securities or cash equivalents. The Fund also may enter into repurchase agreements with counterparties that are deemed to present acceptable credit risks. In an effort to ensure that the Fund is fully invested on a day-to-day basis, the Fund may conduct any necessary trading activity at or just prior to the close of the U.S. financial markets. The Fund is non-diversified and, therefore, may invest a greater percentage of its assets in a particular issuer in comparison to a diversified fund.
 
Investments in derivative instruments, such as futures, options and swap agreements, have the economic effect of creating financial leverage in the Fund’s portfolio because such investments may give rise to losses that exceed the amount the Fund has invested in those instruments. Financial leverage will magnify, sometimes significantly, the Fund’s exposure to any increase or decrease in prices associated with a particular reference asset resulting in increased volatility in the value of the Fund’s portfolio. The value of the Fund’s portfolio is likely to experience greater volatility over short-term periods. While such financial leverage has the potential to produce greater gains, it also may result in greater losses, which in some cases may cause the Fund to liquidate other portfolio investments at a loss to comply with limits on leverage and asset segregation requirements imposed by the Investment Company Act of 1940 or to meet redemption requests.

Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time.
Risk [Heading] rr_RiskHeading PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money. In addition to this risk, the Fund is subject to the principal risks described below.

COMPOUNDING RISKIn addition to the correlation risks described under “Correlation Risk,” the Fund’s returns are subject to the effects of compounding, which generally will cause the Fund’s performance to not correlate to the performance of the benchmark over periods greater than a single day, before accounting for fees and fund expenses. Compounded returns are the result of reinvesting daily returns over periods greater than a single day. The Fund’s compounded returns for periods greater than a single day will be different than the performance of the benchmark over the same period. The effects of compounding on the performance of the Fund will be more pronounced when the underlying index experiences increased volatility, the greater the leverage employed in the Fund, and over longer holding periods.

Compounding affects the performance of all investments over time, but has a more significant effect on a leveraged index fund because the magnified changes in performance produced by the use of leverage lead to greater increases and decreases in the fund’s daily returns which are then compounded over time. The effects of compounding, therefore, have a more significant effect on the Fund because it seeks to match a multiple of the performance of the Fund’s underlying index on a daily basis.

Fund performance for periods greater than one day can be estimated given any set of assumptions for the following factors: (a) underlying index performance; (b) underlying index volatility; (c) financing rates associated with leverage; (d) other Fund expenses; (e) dividends or interest paid by companies in the underlying index; and (f) period of time. The table below illustrates the impact of two principal factors – volatility and index performance – on Fund performance. The table shows estimated Fund returns for a number of combinations of performance and volatility over a one-year period. Performance shown in the table assumes: (a) no dividends paid by the companies included in the underlying index; (b) no Fund expenses; and (c) a cost of leverage of zero percent. If Fund expenses, including the cost of leverage, were included, the Fund’s performance would be lower than shown.
 
Areas shaded lighter represent those scenarios where the Fund can be expected to return more than twice the performance of the underlying index; conversely, areas shaded darker represent those scenarios where the Fund can be expected to return less than twice the performance of the underlying index.
Index Performance
Annualized Volatility
1x
2x
10%
25%
50%
75%
100%
-60%
-120%
-84%
-85%
-88%
-91%
-94%
-50%
-100%
-75%
-77%
-81%
-86%
-91%
-40%
-80%
-65%
-66%
-72%
-80%
-87%
-30%
-60%
-52%
-54%
-62%
-72%
-82%
-20%
-40%
-37%
-41%
-49%
-64%
-78%
-10%
-20%
-20%
-24%
-37%
-55%
-71%
0%
0%
-1%
-5%
-22%
-43%
-65%
10%
20%
19%
14%
-5%
-31%
-58%
20%
40%
42%
36%
11%
-15%
-47%
30%
60%
67%
59%
32%
-3%
-38%
40%
80%
93%
84%
52%
11%
-28%
50%
100%
122%
111%
76%
28%
-20%
60%
120%
154%
140%
100%
44%
-10%

The underlying index’s annualized historical volatility rate for the five-year period ended June 30, 2020 is 20.27%. The underlying index’s highest one-year volatility rate during the five-year period is 30.59%. The underlying index’s annualized performance for the five-year period ended June 30, 2020 is 4.29%.

Historical underlying index volatility and performance are not indications of what the underlying index volatility and performance will be in the future. The table is intended to isolate the effects of the underlying index volatility and index performance on the return of the Fund, and underscore that the Fund is designed as a short-term trading vehicle for investors who intend to actively monitor and manage their portfolios.

CORRELATION RISK—A number of factors may affect the Fund’s ability to achieve a high degree of correlation with its benchmark, including instances in which the Fund does not hold or have exposure to each component security of the underlying index and the effect of compounding on the Fund’s returns, and there can be no guarantee that the Fund will achieve a high degree of correlation. Failure to achieve a high degree of correlation may prevent the Fund from achieving its investment objective. The Fund does not attempt to, and should not be expected to, provide returns which are a multiple of the returns of the underlying index for periods other than a single day. The risk of the Fund not achieving its daily investment objective will be more acute when the underlying index has an extreme one-day movement approaching 50%. In addition, as a result of compounding, the Fund’s performance for periods greater than a single day is likely to be either greater than or less than the performance of the underlying index times the stated multiple in the Fund’s investment objective, before accounting for Fund fees and expenses.

COUNTERPARTY CREDIT RISK—The Fund may invest in financial instruments involving counterparties that attempt to gain exposure to a particular group of securities, index or asset class without actually purchasing those securities or investments, or to hedge a position. The Fund’s use of such financial instruments, including swap agreements, involves risks that are different from those associated with ordinary portfolio securities transactions. For example, the Fund is exposed to the risk that the counterparty may be unwilling or unable to make timely payments to meet its contractual obligations or may fail to return holdings that are subject to the agreement with the counterparty. If the counterparty becomes bankrupt or defaults on its payment obligations to the Fund, the Fund may not receive the full amount that it is entitled to receive. If this occurs, the value of your shares in the Fund will decrease.

DERIVATIVES RISK—The Fund’s investments in derivatives may pose risks in addition to and greater than those associated with investing directly in securities or other investments, including risks relating to leverage, imperfect correlations with underlying investments or the Fund’s other portfolio holdings, high price volatility, lack of availability, counterparty credit, liquidity, valuation and legal restrictions. Their use is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. If the Advisor 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. Certain risks are specific to the derivatives in which the Fund invests.

SWAP AGREEMENTS RISK—Swap agreements are contracts among the Fund and a counterparty to exchange the return of the pre-determined underlying investment (such as the rate of return of the underlying index). Swap agreements may be negotiated bilaterally and traded OTC between two parties or, in some instances, must be transacted through a futures commission merchant and cleared through a clearinghouse that serves as a central counterparty. Risks associated with the use of swap agreements are different from those associated with ordinary portfolio securities transactions, due in part to the fact they could be considered illiquid and many swaps trade on the OTC market. Swaps are particularly subject to counterparty credit, correlation, valuation, liquidity and leveraging risks. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity, but central clearing does not make swap transactions risk-free.

FUTURES CONTRACTS RISK—Futures contracts are typically exchange-traded contracts that call for the future delivery of an asset at a certain price and date, or cash settlement of the terms of the contract. Risks of futures contracts may be caused by an imperfect correlation between movements in the price of the instruments and the price of the underlying securities. In addition, there is the risk that the Fund may not be able to enter into a closing transaction because of an illiquid market. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value ("NAV"). Futures also are subject to leverage risks and to liquidity risk.

OPTIONS CONTRACTS RISK—Options or options on futures contracts give the holder of the option the right to buy (or to sell) a position in a security or in a contract to the writer of the option, at a certain price. They are subject to correlation risk because there may be an imperfect correlation between the options and the securities markets that cause a given transaction to fail to achieve its objectives. The successful use of options depends on the Advisor’s ability to correctly predict future price fluctuations and the degree of correlation between the options and securities markets. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Options also are particularly subject to leverage risk and can be subject to liquidity risk.

EARLY CLOSING RISK—The Fund is subject to the risk that unanticipated early closings of securities exchanges and other financial markets may result in the Fund’s inability to buy or sell securities or other financial instruments on that day and may cause the Fund to incur substantial trading losses.

EQUITY RISK—The Fund is subject to the risk that the value of the equity securities and equity-based derivatives in the Fund’s portfolio will decline due to volatility in the equity market caused by general market and economic conditions, perceptions regarding particular industries represented in the equity market, or factors relating to specific companies to which the Fund has investment exposure.

INDUSTRY CONCENTRATION RISK—The Fund may concentrate (i.e., invest more than 25% of its net assets) its investments in a limited number of issuers conducting business in the same industry or group of related industries. To the extent the Fund does so, the Fund is more vulnerable to adverse market, economic, regulatory, political or other developments affecting that industry or group of related industries than a fund that invests its assets more broadly. The industries in which the underlying index components, and thus the Fund's assets, may be concentrated will vary as the composition of the underlying index changes over time.

INTEREST RATE RISK—The market value of fixed income investments and related financial instruments will change in response to interest rate changes. During periods of falling interest rates, the values of fixed income securities generally rise. Conversely, during periods of rising interest rates, the values of such securities generally decline. Securities with greater interest rate sensitivity and longer maturities generally are subject to greater fluctuations in value. The Fund may invest in variable and floating rate securities. Although these instruments are generally less sensitive to interest rate changes than fixed rate instruments, the value of floating rate and variable securities may decline if their interest rates do not rise as quickly, or as much, as general interest rates. Changes in government or central bank policy, including changes in tax policy or changes in a central bank’s implementation of specific policy goals, may have a substantial impact on interest rates, and could have an adverse effect on prices for fixed income securities and on the performance of the Fund. In particular, interest rates in the U.S. are at or near historically low levels and as a result, fixed income securities markets may experience heightened levels of interest rate risk. Any unexpected or sudden reversal of the fiscal policy underlying current interest rate levels could adversely affect the value of the Fund. There can be no guarantee that any particular government or central bank policy will be continued, discontinued or changed, nor that any such policy will have the desired effect on interest rates.

LEVERAGING RISK—The Fund achieves leveraged exposure to the underlying index through the use of derivative instruments.  The more the Fund invests in leveraged instruments, the more this leverage will magnify any losses on those investments. The Fund’s investment in these instruments generally requires a small investment relative to the amount of investment exposure assumed.  As a result, such investments may give rise to losses that exceed the amount invested in those instruments. Since the Fund’s investment strategy involves consistently applied leverage, the value of the Fund’s shares will tend to increase or decrease more than the value of any increase or decrease in the underlying index. Leverage also will have the effect of magnifying tracking error.

LIQUIDITY AND VALUATION RISK—In certain circumstances, it may be difficult for the Fund to purchase and sell a particular investment within a reasonable time at a fair price, or the price at which it has been valued by the Advisor for purposes of the Fund's NAV, causing the Fund to be less liquid. While the Fund intends to invest in liquid securities and financial instruments, under certain market conditions, such as when trading in a particular investment has been halted temporarily by an exchange because the maximum price change of that investment has been realized, it may be difficult or impossible for the Fund to liquidate such investments. In addition, the ability of the Fund to assign an accurate daily value to certain investments may be difficult, and the Advisor may be required to fair value the investments.

MARKET RISK—The market value of the securities and derivatives held by the Fund may fluctuate over time in response to factors affecting individual companies or other factors such as changing economic, political or financial markets.

NON-DIVERSIFICATION RISK—The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).

OTC TRADING RISK—Certain of the derivatives in which the Fund may invest may be traded (and privately negotiated) in the OTC market. While the OTC derivatives market is the primary trading venue for many derivatives, it is largely unregulated and provides for less transparency than a national securities or commodities exchange. As a result and similar to other privately negotiated contracts, the Fund is subject to counterparty credit risk with respect to such derivatives contracts.

PASSIVE INVESTMENT RISK—The Fund is not actively managed and the Advisor does not attempt to take defensive positions in declining markets. Therefore, the Fund may be subject to greater losses in a declining market than a fund that is actively managed.
 
PORTFOLIO TURNOVER RISK—Periodic rebalancing of the Fund's holdings pursuant to its daily investment objective may lead to a greater number of portfolio transactions in the Fund than experienced by other mutual funds. Such frequent and active trading may lead to significantly higher transaction costs because of increased broker commissions associated with such transactions.

REAL ESTATE INVESTMENT TRUST ("REIT") RISK—REITs are securities that invest substantially all of their assets in real estate, trade like stocks and may qualify for special tax considerations. Investments in REITs subject the Fund to risks associated with the direct ownership of real estate. Market conditions or events affecting the overall real estate and REIT markets, such as declining property values or rising interest rates, could have a negative impact on the real estate market and the value of REITs in general. REITs may be affected by changes in the value of the underlying property owned by the trusts, economic downturns which may have a material effect on the real estate in which the REITs invest and their underlying portfolio securities. Further, REITs are dependent upon specialized management skills and may have their investments in relatively few properties, or in a small geographic area or a single property type. Failure of a company to qualify as a REIT under federal tax law may have adverse consequences to the Fund. In addition, REITs have their own expenses, and the Fund will bear a proportionate share of those expenses.

REGULATORY AND LEGAL RISK—U.S. and non-U.S. governmental agencies and other regulators regularly implement additional 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 (such as regulations related to investments in derivatives and other transactions). These regulations and laws impact the investment strategies, performance, costs and operations of the Fund or taxation of shareholders.

REPURCHASE AGREEMENT RISK—The Fund’s investment in repurchase agreements may be subject to market and credit risk with respect to the collateral securing the repurchase agreements. Investments in repurchase agreements also may be subject to the risk that the market value of the underlying obligations may decline prior to the expiration of the repurchase agreement term.

SECTOR RISK—The Fund is subject to the Sector Risks described below.

Consumer Discretionary Sector Risk. The Fund’s investments are exposed to issuers conducting business in the Consumer Discretionary Sector. The manufacturing segment of the Consumer Discretionary Sector includes automotive, household durable goods, leisure equipment and textiles and apparel. The services segment includes hotels, restaurants and other leisure facilities, media production and services, and consumer retailing and services. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Consumer Discretionary Sector.  The performance of companies operating in the Consumer Discretionary Sector has historically been closely tied to the performance of the overall economy, and also is affected by economic growth, consumer confidence, attitudes and spending. Changes in demographics and consumer tastes also can affect the demand for, and success of, consumer products and services in the marketplace. Moreover, the Consumer Discretionary Sector encompasses those businesses that tend to be the most sensitive to economic cycles.

Financials Sector Risk. The Fund's investments are exposed to issuers conducting business in the Financials Sector. The Financials Sector includes companies involved in banking, thrifts and mortgage finance, specialized finance, consumer finance, asset management and custody banks, investment banking and brokerage, and insurance. It also includes the Financial Exchanges & Data and Mortgage Real Estate Investment Trusts (REITs) sub-industries. Certain Financials Sector issuers serve as counterparties with which the Fund may enter into derivatives agreements or other similar contractual arrangements. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Financials Sector, which may adversely affect a company's ability to fulfill its obligations as a financial counterparty. Companies operating in the Financials Sector are subject to extensive government regulation, which may limit the financial commitments they can make and the interest rates and fees they can charge. Profitability is largely dependent on the availability and cost of capital funds, and may fluctuate significantly when interest rates change or due to increased competition.
 
Health Care Sector Risk.  The Fund's investments are exposed to issuers conducting business in the Health Care Sector. The Health Care Sector includes health care providers and services, companies that manufacture and distribute health care equipment and supplies, and health care technology companies. It also includes companies involved in the research, development, production and marketing of pharmaceuticals and biotechnology products. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Health Care Sector. The prices of the securities of companies operating in the Health Care Sector are closely tied to government regulation and approval of their products and services, which can have a significant effect on the price and availability of those products and services.

Industrials Sector Risk. The Fund's investments are exposed to issuers conducting business in the Industrials Sector. The Industrials Sector includes manufacturers and distributors of capital goods such as aerospace and defense, building projects, electrical equipment and machinery, and companies that offer construction and engineering services. It also includes providers of commercial and professional services including printing, environmental and facilities services, office services and supplies, security and alarm services, human resource and employment services, and research and consulting services. It also includes companies that provide transportation services. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Industrials Sector. The prices of the securities of companies operating in the Industrials Sector may fluctuate due to the level and volatility of commodity prices, the exchange value of the dollar, import controls, worldwide competition, liability for environmental damage, depletion of resources, and mandated expenditures for safety and pollution control devices.

Information Technology Sector Risk. The Fund's investments are exposed to issuers conducting business in the Information Technology Sector. The Information Technology Sector includes companies that offer software and information technology services, manufacturers and distributors of technology hardware and equipment such as communications equipment, cellular phones, computers and peripherals, electronic equipment and related instruments and semiconductors. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Information Technology Sector. The prices of the securities of companies operating in the Information Technology Sector are closely tied to market competition, increased sensitivity to short product cycles and aggressive pricing, and problems with bringing products to market.

Real Estate Sector Risk. The Fund's investments are exposed to issuers conducting business in the Real Estate Sector. The Real Estate Sector contains companies operating in real estate development and operations. It also includes companies offering real estate-related services and REITs. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Real Estate Sector. The performance of companies operating in the Real Estate Sector has historically been cyclical and particularly sensitive to the overall economy and market changes, including declines in the value of real estate or, conversely, saturation of the real estate market, economic downturns and defaults by borrowers or tenants during such periods, increases in competition, limited availability of mortgage funds or other limits to accessing the credit or capital markets, and changes in interest rates.

SHAREHOLDER TRADING RISK—The Fund may be used as a tool for certain investors that employ trading strategies involving frequent trading. Such trading strategies may lead to increased portfolio turnover in the Fund, higher transaction costs, and the possibility of increased short-term capital gains (which will be taxable to shareholders as ordinary income when distributed to them) and/or long-term capital gains. Large movements of assets into and out of the Fund due to active or frequent trading also may adversely affect the Fund's ability to achieve its investment objective.

SMALL-CAPITALIZATION SECURITIES RISK—The Fund is subject to the risk that small-capitalization stocks may underperform other segments of the equity market or the equity market as a whole. Small-capitalization companies may be more vulnerable than larger, more established organizations to adverse business or economic developments. Securities of small-capitalization companies may experience much more price volatility, greater spreads between their bid and ask prices, significantly lower trading volumes, and cyclical or static growth prospects. Small-capitalization companies often have limited product lines, markets or financial resources, and may therefore be more vulnerable to adverse developments than larger capitalization companies.
 
TEMPORARY DEFENSIVE INVESTMENT RISK—The Advisor generally does not attempt to take defensive positions in the Fund in declining markets. Therefore, the Fund may be subject to greater losses in a declining market than a fund that does take defensive positions in declining markets.

TRACKING ERROR RISK—The Advisor may not be able to cause the Fund’s performance to match that of the Fund’s benchmark, either on a daily or aggregate basis. Factors such as Fund expenses, imperfect correlation between the Fund’s investments and those of the underlying index, rounding of share prices, changes to the composition of the underlying index, regulatory policies, high portfolio turnover rate, and the use of leverage all contribute to tracking error. Tracking error may cause the Fund’s performance to be less than you expect.

TRADING HALT RISK—The Fund typically will hold futures contracts and short-term options. The major exchanges on which these contracts are traded, such as the Chicago Mercantile Exchange, have established limits on how much the trading price of a futures contract or option may decline over various time periods within a day, and may halt trading in a contract that exceeds such limits. If a trading halt occurs, the Fund may temporarily be unable to purchase or sell certain securities, futures contracts or options. Such a trading halt near the time the Fund prices its shares may limit the Fund’s ability to use leverage and fully invest its assets, which could increase tracking error and adversely affect performance, and may prevent the Fund from achieving its investment objective.

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. The value of U.S. government securities will fluctuate and such securities are subject to the risks associated with fixed-income and debt securities, particularly interest rate and credit risk.

Risk Lose Money [Text] rr_RiskLoseMoney As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund. The following table shows the performance of the Class H shares of the Fund as an average over different periods of time in comparison to the performance of a broad-based market index. The figures in the bar chart and table assume the reinvestment of dividends and capital gains distributions. Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Updated performance information is available on the Fund’s website at www.guggenheiminvestments.com or by calling 800.820.0888.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800.820.0888
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.guggenheiminvestments.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.
Bar Chart Narrative [Text Block] rr_BarChartNarrativeTextBlock
The performance information shown below for Class H shares is based on a calendar year. The year-to-date return for the period from January 1, 2020 through June 30, 2020 is -36.47%.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarter Return
 
Lowest Quarter Return
 
Q2 2010
33.43%
 
Q3 2011
-42.69
 %
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURN (for periods ended December 31, 2019)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock
The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Class H Prospectus | Russell 2000 2x Strategy Fund | Russell 2000 Index  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses or taxes)
Label rr_AverageAnnualReturnLabel Russell 2000® Index (reflects no deduction for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 25.52%
5 Years rr_AverageAnnualReturnYear05 9.64%
10 Years rr_AverageAnnualReturnYear10 13.47%
Class H Prospectus | Russell 2000 2x Strategy Fund | Class H  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol RYRSX
Shareholder Fee, Other rr_ShareholderFeeOther none
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.90%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.74% [7]
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 1.89%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 192
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 594
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,021
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,212
Annual Return 2010 rr_AnnualReturn2010 48.86%
Annual Return 2011 rr_AnnualReturn2011 (19.98%)
Annual Return 2012 rr_AnnualReturn2012 28.13%
Annual Return 2013 rr_AnnualReturn2013 84.52%
Annual Return 2014 rr_AnnualReturn2014 4.56%
Annual Return 2015 rr_AnnualReturn2015 (13.02%)
Annual Return 2016 rr_AnnualReturn2016 38.39%
Annual Return 2017 rr_AnnualReturn2017 25.56%
Annual Return 2018 rr_AnnualReturn2018 (26.75%)
Annual Return 2019 rr_AnnualReturn2019 46.90%
Year to Date Return, Label rr_YearToDateReturnLabel year-to-date return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2020
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn (36.47%)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarter Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2010
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 33.43%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarter Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (42.69%)
Label rr_AverageAnnualReturnLabel Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 46.90%
5 Years rr_AverageAnnualReturnYear05 10.22%
10 Years rr_AverageAnnualReturnYear10 16.96%
Class H Prospectus | Russell 2000 2x Strategy Fund | Class H | After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions
1 Year rr_AverageAnnualReturnYear01 46.73%
5 Years rr_AverageAnnualReturnYear05 9.13%
10 Years rr_AverageAnnualReturnYear10 16.22%
Class H Prospectus | Russell 2000 2x Strategy Fund | Class H | After Taxes on Distributions and Sales  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions and Sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 27.76%
5 Years rr_AverageAnnualReturnYear05 7.47%
10 Years rr_AverageAnnualReturnYear10 14.04%
Class H Prospectus | Inverse Russell 2000 2x Strategy Fund  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading INVERSE RUSSELL 2000® 2X STRATEGY FUND
Supplement [Text Block] ck0001092720_SupplementTextBlock
IMPORTANT INFORMATION ABOUT THE FUND
The Inverse Russell 2000® 2x Strategy Fund (the “Fund”) is very different from most other mutual funds in that it seeks to provide leveraged investment results that match twice the inverse of the performance of a specific underlying index on a daily basis, a result opposite of most mutual funds. As a result, the Fund may be riskier than alternatives that do not use leverage because the performance of an investment in the Fund is magnified.

The effect of leverage on the Fund will generally cause the Fund’s performance to not match the performance of the Fund’s benchmark (as described below) over a period of time greater than a single trading day. This means that the return of the Fund for a period of longer than a single trading day will be the result of each day’s compounded returns over the period, which will very likely differ from twice the inverse return of the Fund’s underlying index (as defined below) for that period. As a consequence, especially in periods of market volatility, the path or trend of the benchmark during the longer period may be at least as important to the Fund’s cumulative return for the longer period as the cumulative return of the benchmark for the relevant longer period. Further, the return for investors who invest for a period longer than a single trading day will not be the product of the return of the Fund’s stated investment goal (i.e., -2x) and the cumulative performance of the benchmark.

The Fund is not suitable for all investors. The Fund should be utilized only by investors who (a) understand the risks associated with the use of leverage, (b) understand the consequences of seeking daily leveraged investment results, (c) understand the risks of shorting and (d) intend to actively monitor and manage their investments. Investors who do not meet these criteria should not buy shares of the Fund. An investment in the Fund is not a complete investment program.
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund seeks to provide investment results that match, before fees and expenses, the performance of a specific benchmark on a daily basis. The Fund’s current benchmark is 200% of the inverse (opposite) of the performance of the Russell 2000® Index (the “underlying index”). The Fund does not seek to achieve its investment objective over a period of time greater than one day.
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES OF THE FUND
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold Class H shares of the Fund.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading PORTFOLIO TURNOVER
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Total Annual Fund Operating Expenses or the Example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 0% of the average value of its portfolio. The Fund’s portfolio turnover rate is calculated without regard to cash instruments and most derivatives. If such instruments were included, the Fund’s portfolio turnover rate might be significantly higher.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate none
Expense Example [Heading] rr_ExpenseExampleHeading EXAMPLE
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund employs as its investment strategy a program of engaging in short sales of securities generally included in the underlying index and investing in derivative instruments, which primarily consist of equity index swaps and swaps on exchange-traded funds, futures contracts, and options on securities, securities indices, and futures contracts. While the Fund may write (sell) and purchase swaps, it expects primarily to write swaps. The Advisor attempts to consistently apply leverage to increase the Fund's exposure to -200% of the underlying index, and expects to rebalance the Fund's holdings daily to maintain such exposure. The Fund’s investment in derivatives serves as a substitute for directly selling short each of the securities included in the underlying index. Certain of the Fund’s derivatives investments may be traded in the over-the-counter (“OTC”) market. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus any borrowings for investment purposes, in financial instruments with economic characteristics that should perform opposite to the securities of companies included in the underlying index.

The Russell 2000® Index is composed of the 2,000 smallest companies in the Russell 3000® Index, representing approximately 10% of the Russell 3000® total market capitalization and consisting of capitalizations ranging from $41 million to $12.4 billion as of June 30, 2020. The Russell 3000® Index is composed of the 3,000 largest U.S. companies ranked by total market capitalization, representing approximately 98% of the U.S. investable equity market. To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time. While the Fund's sector exposure may vary over time, as of June 30, 2020, the Fund has significant exposure to the Consumer Discretionary Sector, Financials Sector, Health Care Sector, Industrials Sector, Information Technology Sector, and Real Estate Sector, as each sector is defined by the Global Industry Classification Standard, a widely recognized industry classification methodology developed by MSCI, Inc. and Standard & Poor's Financial Services LLC.

On a day-to-day basis, the Fund may hold U.S. government securities or cash equivalents. The Fund also may enter into repurchase agreements with counterparties that are deemed to present acceptable credit risks. In an effort to ensure that the Fund is fully invested on a day-to-day basis, the Fund may conduct any necessary trading activity at or just prior to the close of the U.S. financial markets. The Fund is non-diversified and, therefore, may invest a greater percentage of its assets in a particular issuer in comparison to a diversified fund.

Investments in derivative instruments, such as futures, options and swap agreements, have the economic effect of creating financial leverage in the Fund’s portfolio because such investments may give rise to losses that exceed the amount the Fund has invested in those instruments. Financial leverage will magnify, sometimes significantly, the Fund’s exposure to any increase or decrease in prices associated with a particular reference asset resulting in increased volatility in the value of the Fund’s portfolio. The value of the Fund’s portfolio is likely to experience greater volatility over short-term periods. While such financial leverage has the potential to produce greater gains, it also may result in greater losses, which in some cases may cause the Fund to liquidate other portfolio investments at a loss to comply with limits on leverage and asset segregation requirements imposed by the Investment Company Act of 1940 or to meet redemption requests.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration To the extent the Fund’s underlying index is concentrated in a particular industry the Fund will necessarily be concentrated in that industry. The industries in which the underlying index components, and thus the Fund's investments, may be concentrated will vary as the composition of the underlying index changes over time.
Risk [Heading] rr_RiskHeading PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money. In addition to this risk, the Fund is subject to the principal risks described below.

COMPOUNDING RISKIn addition to the correlation risks described under “Correlation Risk,” the Fund’s returns are subject to the effects of compounding, which generally will cause the Fund’s performance to not correlate to the performance of the benchmark over periods greater than a single day, before accounting for fees and fund expenses. Compounded returns are the result of reinvesting daily returns over periods greater than a single day. The Fund’s compounded returns for periods greater than a single day will be different than the performance of the benchmark over the same period. The effects of compounding on the performance of the Fund will be more pronounced when the underlying index experiences increased volatility, the greater the leverage employed in the Fund, and over longer holding periods.

Compounding affects the performance of all investments over time, but has a more significant effect on a leveraged index fund because the magnified changes in performance produced by the use of leverage lead to greater increases and decreases in the fund’s daily returns which are then compounded over time. The effects of compounding, therefore, have a more significant effect on the Fund because it seeks to match a multiple of the inverse performance of the Fund’s underlying index on a daily basis.

Fund performance for periods greater than one day can be estimated given any set of assumptions for the following factors: (a) underlying index performance; (b) underlying index volatility; (c) financing rates associated with leverage; (d) other Fund expenses; (e) dividends or interest paid by companies in the underlying index; and (f) period of time. The table below illustrates the impact of two principal factors – volatility and index performance – on Fund performance. The table shows estimated Fund returns for a number of combinations of performance and volatility over a one-year period. Performance shown in the table assumes: (a) no dividends paid by the companies included in the underlying index; (b) no Fund expenses; and (c) a cost of leverage of zero percent. If Fund expenses, including the cost of leverage, were included, the Fund’s performance would be lower than shown.
 
Areas shaded lighter represent those scenarios where the Fund can be expected to return more than twice the inverse performance of the underlying index; conversely, areas shaded darker represent those scenarios where the Fund can be expected to return the same or less than twice the inverse performance of the underlying index.
Index Performance
Annualized Volatility
1x
-2x
10%
25%
50%
75%
100%
-60%
120%
506%
404%
199%
13%
-69%
-50%
100%
286%
229%
91%
-27%
-82%
-40%
80%
171%
128%
33%
-49%
-86%
-30%
60%
99%
70%
-1%
-62%
-90%
-20%
40%
52%
31%
-27%
-70%
-93%
-10%
20%
20%
3%
-42%
-77%
-94%
0%
0%
-3%
-18%
-52%
-81%
-96%
10%
-20%
-19%
-31%
-61%
-84%
-96%
20%
-40%
-32%
-43%
-67%
-87%
-97%
30%
-60%
-42%
-51%
-72%
-89%
-97%
40%
-80%
-50%
-58%
-75%
-91%
-97%
50%
-100%
-57%
-63%
-79%
-92%
-98%
60%
-120%
-62%
-68%
-82%
-93%
-98%

The underlying index’s annualized historical volatility rate for the five-year period ended June 30, 2020 is 20.27%. The underlying index’s highest one-year volatility rate during the five-year period is 30.59%. The underlying index’s annualized performance for the five-year period ended June 30, 2020 is 4.29%.

Historical underlying index volatility and performance are not indications of what the underlying index volatility and performance will be in the future. The table is intended to isolate the effects of the underlying index volatility and index performance on the return of the Fund, and underscore that the Fund is designed as a short-term trading vehicle for investors who intend to actively monitor and manage their portfolios.

CORRELATION RISK—A number of factors may affect the Fund’s ability to achieve a high degree of correlation with its benchmark, including instances in which the Fund does not hold or have exposure to each component security of the underlying index and the effect of compounding on the Fund’s returns, and there can be no guarantee that the Fund will achieve a high degree of correlation. Failure to achieve a high degree of correlation may prevent the Fund from achieving its investment objective. The Fund does not attempt to, and should not be expected to, provide returns which are an inverse multiple of the returns of the underlying index for periods other than a single day. The risk of the Fund not achieving its daily investment objective will be more acute when the underlying index has an extreme one-day movement approaching 50%. In addition, as a result of compounding, the Fund’s performance for periods greater than a single day is likely to be either greater than or less than the inverse of the performance of the underlying index times the stated multiple in the Fund’s investment objective, before accounting for Fund fees and expenses.

COUNTERPARTY CREDIT RISK—The Fund may invest in financial instruments involving counterparties that attempt to gain exposure to a particular group of securities, index or asset class without actually purchasing those securities or investments, or to hedge a position. The Fund’s use of such financial instruments, including swap agreements, involves risks that are different from those associated with ordinary portfolio securities transactions. For example, the Fund is exposed to the risk that the counterparty may be unwilling or unable to make timely payments to meet its contractual obligations or may fail to return holdings that are subject to the agreement with the counterparty. If the counterparty becomes bankrupt or defaults on its payment obligations to the Fund, the Fund may not receive the full amount that it is entitled to receive. If this occurs, the value of your shares in the Fund will decrease.

DERIVATIVES RISK—The Fund’s investments in derivatives may pose risks in addition to and greater than those associated with investing directly in securities or other investments, including risks relating to leverage, imperfect correlations with underlying investments or the Fund’s other portfolio holdings, high price volatility, lack of availability, counterparty credit, liquidity, valuation and legal restrictions. Their use is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. If the Advisor 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. Certain risks are specific to the derivatives in which the Fund invests.

SWAP AGREEMENTS RISK—Swap agreements are contracts among the Fund and a counterparty to exchange the return of the pre-determined underlying investment (such as the rate of return of the underlying index). Swap agreements may be negotiated bilaterally and traded OTC between two parties or, in some instances, must be transacted through a futures commission merchant and cleared through a clearinghouse that serves as a central counterparty. Risks associated with the use of swap agreements are different from those associated with ordinary portfolio securities transactions, due in part to the fact they could be considered illiquid and many swaps trade on the OTC market. Swaps are particularly subject to counterparty credit, correlation, valuation, liquidity and leveraging risks. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity, but central clearing does not make swap transactions risk-free.

FUTURES CONTRACTS RISK—Futures contracts are typically exchange-traded contracts that call for the future delivery of an asset at a certain price and date, or cash settlement of the terms of the contract. Risks of futures contracts may be caused by an imperfect correlation between movements in the price of the instruments and the price of the underlying securities. In addition, there is the risk that the Fund may not be able to enter into a closing transaction because of an illiquid market. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value ("NAV"). Futures also are subject to leverage risks and to liquidity risk.

OPTIONS CONTRACTS RISK—Options or options on futures contracts give the holder of the option the right to buy (or to sell) a position in a security or in a contract to the writer of the option, at a certain price. They are subject to correlation risk because there may be an imperfect correlation between the options and the securities markets that cause a given transaction to fail to achieve its objectives. The successful use of options depends on the Advisor’s ability to correctly predict future price fluctuations and the degree of correlation between the options and securities markets. Exchanges can limit the number of positions that can be held or controlled by the Fund or the Advisor, thus limiting the ability to implement the Fund’s strategies. Options also are particularly subject to leverage risk and can be subject to liquidity risk.

EARLY CLOSING RISK—The Fund is subject to the risk that unanticipated early closings of securities exchanges and other financial markets may result in the Fund’s inability to buy or sell securities or other financial instruments on that day and may cause the Fund to incur substantial trading losses.

EQUITY RISK—The Fund is subject to the risk that the value of the equity securities and equity-based derivatives in the Fund’s portfolio will decline due to volatility in the equity market caused by general market and economic conditions, perceptions regarding particular industries represented in the equity market, or factors relating to specific companies to which the Fund has investment exposure.

INDUSTRY CONCENTRATION RISK—The Fund may concentrate (i.e., invest more than 25% of its net assets) its investments in a limited number of issuers conducting business in the same industry or group of related industries. To the extent the Fund does so, the Fund is more vulnerable to adverse market, economic, regulatory, political or other developments affecting that industry or group of related industries than a fund that invests its assets more broadly. The industries in which the underlying index components, and thus the Fund's assets, may be concentrated will vary as the composition of the underlying index changes over time.

INTEREST RATE RISK—The market value of fixed income investments and related financial instruments will change in response to interest rate changes. During periods of falling interest rates, the values of fixed income securities generally rise. Conversely, during periods of rising interest rates, the values of such securities generally decline. Securities with greater interest rate sensitivity and longer maturities generally are subject to greater fluctuations in value. The Fund may invest in variable and floating rate securities. Although these instruments are generally less sensitive to interest rate changes than fixed rate instruments, the value of floating rate and variable securities may decline if their interest rates do not rise as quickly, or as much, as general interest rates. Changes in government or central bank policy, including changes in tax policy or changes in a central bank’s implementation of specific policy goals, may have a substantial impact on interest rates, and could have an adverse effect on prices for fixed income securities and on the performance of the Fund. In particular, interest rates in the U.S. are at or near historically low levels and as a result, fixed income securities markets may experience heightened levels of interest rate risk. Any unexpected or sudden reversal of the fiscal policy underlying current interest rate levels could adversely affect the value of the Fund. There can be no guarantee that any particular government or central bank policy will be continued, discontinued or changed, nor that any such policy will have the desired effect on interest rates.

LEVERAGING RISK—The Fund achieves leveraged exposure to the underlying index through the use of derivative instruments.  The more the Fund invests in leveraged instruments, the more this leverage will magnify any losses on those investments. The Fund’s investment in these instruments generally requires a small investment relative to the amount of investment exposure assumed.  As a result, such investments may give rise to losses that exceed the amount invested in those instruments. Since the Fund’s investment strategy involves consistently applied leverage, the value of the Fund’s shares will tend to increase or decrease more than the value of any increase or decrease in the underlying index. Leverage also will have the effect of magnifying tracking error.

LIQUIDITY AND VALUATION RISK—In certain circumstances, it may be difficult for the Fund to purchase and sell a particular investment within a reasonable time at a fair price, or the price at which it has been valued by the Advisor for purposes of the Fund's NAV, causing the Fund to be less liquid. While the Fund intends to invest in liquid securities and financial instruments, under certain market conditions, such as when trading in a particular investment has been halted temporarily by an exchange because the maximum price change of that investment has been realized, it may be difficult or impossible for the Fund to liquidate such investments. In addition, the ability of the Fund to assign an accurate daily value to certain investments may be difficult, and the Advisor may be required to fair value the investments.

MARKET RISK—The market value of the securities and derivatives held by the Fund may fluctuate over time in response to factors affecting individual companies or other factors such as changing economic, political or financial markets.

NON-DIVERSIFICATION RISK—The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).

OTC TRADING RISK—Certain of the derivatives in which the Fund may invest may be traded (and privately negotiated) in the OTC market. While the OTC derivatives market is the primary trading venue for many derivatives, it is largely unregulated and provides for less transparency than a national securities or commodities exchange. As a result and similar to other privately negotiated contracts, the Fund is subject to counterparty credit risk with respect to such derivatives contracts.

PASSIVE INVESTMENT RISK—The Fund is not actively managed and the Advisor does not attempt to take defensive positions in rising markets. Therefore, the Fund may be subject to greater losses in a rising market than a fund that is actively managed.
 
PORTFOLIO TURNOVER RISK—Periodic rebalancing of the Fund's holdings pursuant to its daily investment objective may lead to a greater number of portfolio transactions in the Fund than experienced by other mutual funds. Such frequent and active trading may lead to significantly higher transaction costs because of increased broker commissions associated with such transactions.

REAL ESTATE INVESTMENT TRUST ("REIT") RISK—REITs are securities that invest substantially all of their assets in real estate, trade like stocks and may qualify for special tax considerations. Investments in REITs subject the Fund to risks associated with the direct ownership of real estate. Market conditions or events affecting the overall real estate and REIT markets, such as declining property values or rising interest rates, could have a negative impact on the real estate market and the value of REITs in general. REITs may be affected by changes in the value of the underlying property owned by the trusts, economic downturns which may have a material effect on the real estate in which the REITs invest and their underlying portfolio securities. Further, REITs are dependent upon specialized management skills and may have their investments in relatively few properties, or in a small geographic area or a single property type. Failure of a company to qualify as a REIT under federal tax law may have adverse consequences to the Fund. In addition, REITs have their own expenses, and the Fund will bear a proportionate share of those expenses.

REGULATORY AND LEGAL RISK—U.S. and non-U.S. governmental agencies and other regulators regularly implement additional 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 (such as regulations related to investments in derivatives and other transactions). These regulations and laws impact the investment strategies, performance, costs and operations of the Fund or taxation of shareholders.

REPURCHASE AGREEMENT RISK—The Fund’s investment in repurchase agreements may be subject to market and credit risk with respect to the collateral securing the repurchase agreements. Investments in repurchase agreements also may be subject to the risk that the market value of the underlying obligations may decline prior to the expiration of the repurchase agreement term.

SECTOR RISK—The Fund is subject to the Sector Risks described below.

Consumer Discretionary Sector Risk. The Fund’s investments are exposed to issuers conducting business in the Consumer Discretionary Sector. The manufacturing segment of the Consumer Discretionary Sector includes automotive, household durable goods, leisure equipment and textiles and apparel. The services segment includes hotels, restaurants and other leisure facilities, media production and services, and consumer retailing and services. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Consumer Discretionary Sector.  The performance of companies operating in the Consumer Discretionary Sector has historically been closely tied to the performance of the overall economy, and also is affected by economic growth, consumer confidence, attitudes and spending. Changes in demographics and consumer tastes also can affect the demand for, and success of, consumer products and services in the marketplace. Moreover, the Consumer Discretionary Sector encompasses those businesses that tend to be the most sensitive to economic cycles.

Financials Sector Risk. The Fund's investments are exposed to issuers conducting business in the Financials Sector. The Financials Sector includes companies involved in banking, thrifts and mortgage finance, specialized finance, consumer finance, asset management and custody banks, investment banking and brokerage, and insurance. It also includes the Financial Exchanges & Data and Mortgage Real Estate Investment Trusts (REITs) sub-industries. Certain Financials Sector issuers serve as counterparties with which the Fund may enter into derivatives agreements or other similar contractual arrangements. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Financials Sector, which may adversely affect a company's ability to fulfill its obligations as a financial counterparty. Companies operating in the Financials Sector are subject to extensive government regulation, which may limit the financial commitments they can make and the interest rates and fees they can charge. Profitability is largely dependent on the availability and cost of capital funds, and may fluctuate significantly when interest rates change or due to increased competition.

Health Care Sector Risk.  The Fund's investments are exposed to issuers conducting business in the Health Care Sector. The Health Care Sector includes health care providers and services, companies that manufacture and distribute health care equipment and supplies, and health care technology companies. It also includes companies involved in the research, development, production and marketing of pharmaceuticals and biotechnology products. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Health Care Sector. The prices of the securities of companies operating in the Health Care Sector are closely tied to government regulation and approval of their products and services, which can have a significant effect on the price and availability of those products and services.

Industrials Sector Risk. The Fund's investments are exposed to issuers conducting business in the Industrials Sector. The Industrials Sector includes manufacturers and distributors of capital goods such as aerospace and defense, building projects, electrical equipment and machinery, and companies that offer construction and engineering services. It also includes providers of commercial and professional services including printing, environmental and facilities services, office services and supplies, security and alarm services, human resource and employment services, and research and consulting services. It also includes companies that provide transportation services. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Industrials Sector. The prices of the securities of companies operating in the Industrials Sector may fluctuate due to the level and volatility of commodity prices, the exchange value of the dollar, import controls, worldwide competition, liability for environmental damage, depletion of resources, and mandated expenditures for safety and pollution control devices.

Information Technology Sector Risk. The Fund's investments are exposed to issuers conducting business in the Information Technology Sector. The Information Technology Sector includes companies that offer software and information technology services, manufacturers and distributors of technology hardware and equipment such as communications equipment, cellular phones, computers and peripherals, electronic equipment and related instruments and semiconductors. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Information Technology Sector. The prices of the securities of companies operating in the Information Technology Sector are closely tied to market competition, increased sensitivity to short product cycles and aggressive pricing, and problems with bringing products to market.

Real Estate Sector Risk. The Fund's investments are exposed to issuers conducting business in the Real Estate Sector. The Real Estate Sector contains companies operating in real estate development and operations. It also includes companies offering real estate-related services and REITs. The Fund is subject to the risk that the securities of such issuers will underperform the market as a whole due to legislative or regulatory changes, adverse market conditions and/or increased competition affecting the Real Estate Sector. The performance of companies operating in the Real Estate Sector has historically been cyclical and particularly sensitive to the overall economy and market changes, including declines in the value of real estate or, conversely, saturation of the real estate market, economic downturns and defaults by borrowers or tenants during such periods, increases in competition, limited availability of mortgage funds or other limits to accessing the credit or capital markets, and changes in interest rates.

SHAREHOLDER TRADING RISK—The Fund may be used as a tool for certain investors that employ trading strategies involving frequent trading. Such trading strategies may lead to increased portfolio turnover in the Fund, higher transaction costs, and the possibility of increased short-term capital gains (which will be taxable to shareholders as ordinary income when distributed to them) and/or long-term capital gains. Large movements of assets into and out of the Fund due to active or frequent trading also may adversely affect the Fund's ability to achieve its investment objective.

SHORT SALES AND SHORT EXPOSURE 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. A short exposure through a derivative exposes the Fund to counterparty credit risk and leverage risk. The risk for loss on a short sale or other short exposure is greater than a direct investment in the security itself because the price of the borrowed security may rise, thereby increasing the price at which the security must be purchased. The risk of loss through a short sale or other short exposure may in some cases be theoretically unlimited. Government actions also may affect the Fund’s ability to engage in short selling.

SMALL-CAPITALIZATION SECURITIES RISK—The Fund is subject to the risk that small-capitalization stocks may outperform other segments of the equity market or the equity market as a whole. Small-capitalization companies may be more vulnerable than larger, more established organizations to adverse business or economic developments. Securities of small-capitalization companies may experience much more price volatility, greater spreads between their bid and ask prices, significantly lower trading volumes, and cyclical or static growth prospects. Small-capitalization companies often have limited product lines, markets or financial resources, and may therefore be more vulnerable to adverse developments than larger capitalization companies.

TEMPORARY DEFENSIVE INVESTMENT RISK—The Advisor generally does not attempt to take defensive positions in the Fund in declining markets. Therefore, the Fund may be subject to greater losses in a declining market than a fund that does take defensive positions in declining markets.

TRACKING ERROR RISK—The Advisor may not be able to cause the Fund’s performance to match that of the Fund’s benchmark, either on a daily or aggregate basis. Factors such as Fund expenses, imperfect correlation between the Fund’s investments and those of the underlying index, rounding of share prices, changes to the composition of the underlying index, regulatory policies, high portfolio turnover rate, and the use of leverage all contribute to tracking error. Tracking error may cause the Fund’s performance to be less than you expect.

TRADING HALT RISK—The Fund typically will hold futures contracts and short-term options. The major exchanges on which these contracts are traded, such as the Chicago Mercantile Exchange, have established limits on how much the trading price of a futures contract or option may decline over various time periods within a day, and may halt trading in a contract that exceeds such limits. If a trading halt occurs, the Fund may temporarily be unable to purchase or sell certain securities, futures contracts or options. Such a trading halt near the time the Fund prices its shares may limit the Fund’s ability to use leverage and fully invest its assets, which could increase tracking error and adversely affect performance, and may prevent the Fund from achieving its investment objective.

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. The value of U.S. government securities will fluctuate and such securities are subject to the risks associated with fixed-income and debt securities, particularly interest rate and credit risk.
Risk Lose Money [Text] rr_RiskLoseMoney As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus The Fund is considered non-diversified and can invest a greater portion of its assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single issuer's securities could cause greater fluctuations in the value of Fund shares than would occur in a diversified fund. The Fund may become diversified for periods of time solely as a result of changes in the composition of the underlying index (e.g., changes in the relative market capitalization or weights of one or more index component stocks).
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund. The following table shows the performance of the Class H shares of the Fund as an average over different periods of time in comparison to the performance of a broad-based market index. The figures in the bar chart and table assume the reinvestment of dividends and capital gains distributions. Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Updated performance information is available on the Fund’s website at www.guggenheiminvestments.com or by calling 800.820.0888.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following bar chart shows the performance of the Class H shares of the Fund from year to year. The variability of performance over time provides an indication of the risks of investing in the Fund.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800.820.0888
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.guggenheiminvestments.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Of course, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.
Bar Chart Narrative [Text Block] rr_BarChartNarrativeTextBlock
The performance information shown below for Class H shares is based on a calendar year. The year-to-date return for the period from January 1, 2020 through June 30, 2020 is -16.96%.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarter Return
 
Lowest Quarter Return
 
Q4 2018
51.55%
 
Q4 2011
-34.61
 %
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURN (for periods ended December 31, 2019)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock
The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Class H Prospectus | Inverse Russell 2000 2x Strategy Fund | Russell 2000 Index  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses or taxes)
Label rr_AverageAnnualReturnLabel Russell 2000® Index (reflects no deduction for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 25.52%
5 Years rr_AverageAnnualReturnYear05 9.64%
10 Years rr_AverageAnnualReturnYear10 13.47%
Class H Prospectus | Inverse Russell 2000 2x Strategy Fund | Class H  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol RYIRX
Shareholder Fee, Other rr_ShareholderFeeOther none
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.90%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.76% [8]
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 1.91%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 194
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 600
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,032
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,233
Annual Return 2010 rr_AnnualReturn2010 (49.86%)
Annual Return 2011 rr_AnnualReturn2011 (23.56%)
Annual Return 2012 rr_AnnualReturn2012 (34.68%)
Annual Return 2013 rr_AnnualReturn2013 (52.89%)
Annual Return 2014 rr_AnnualReturn2014 (18.69%)
Annual Return 2015 rr_AnnualReturn2015 (1.62%)
Annual Return 2016 rr_AnnualReturn2016 (39.53%)
Annual Return 2017 rr_AnnualReturn2017 (26.61%)
Annual Return 2018 rr_AnnualReturn2018 18.96%
Annual Return 2019 rr_AnnualReturn2019 (38.78%)
Year to Date Return, Label rr_YearToDateReturnLabel year-to-date return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2020
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn (16.96%)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarter Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2018
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 51.55%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarter Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (34.61%)
Label rr_AverageAnnualReturnLabel Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 (38.78%)
5 Years rr_AverageAnnualReturnYear05 (20.48%)
10 Years rr_AverageAnnualReturnYear10 (29.46%)
Class H Prospectus | Inverse Russell 2000 2x Strategy Fund | Class H | After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions
1 Year rr_AverageAnnualReturnYear01 (38.90%)
5 Years rr_AverageAnnualReturnYear05 (20.51%)
10 Years rr_AverageAnnualReturnYear10 (29.48%)
Class H Prospectus | Inverse Russell 2000 2x Strategy Fund | Class H | After Taxes on Distributions and Sales  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions and Sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 (22.96%)
5 Years rr_AverageAnnualReturnYear05 (13.65%)
10 Years rr_AverageAnnualReturnYear10 (12.56%)
[1] "Other Expenses” does not include fees paid to the Fund’s swap contract counterparties, or the management fees, performance fees, and expenses of the reference assets or trading vehicles underlying such swap contracts. These fees and expenses, which are not reflected in this Annual Fund Operating Expenses table, are embedded in the returns of the swap contracts (i.e., the fees and expenses reduce the investment returns of the swap contracts) and represent an indirect cost of investing in the Fund.
[2] "Other Expenses” does not include fees paid to the Fund’s swap contract counterparties, or the management fees, performance fees, and expenses of the reference assets or trading vehicles underlying such swap contracts. These fees and expenses, which are not reflected in this Annual Fund Operating Expenses table, are embedded in the returns of the swap contracts (i.e., the fees and expenses reduce the investment returns of the swap contracts) and represent an indirect cost of investing in the Fund.
[3] "Other Expenses” does not include fees paid to the Fund’s swap contract counterparties, or the management fees, performance fees, and expenses of the reference assets or trading vehicles underlying such swap contracts. These fees and expenses, which are not reflected in this Annual Fund Operating Expenses table, are embedded in the returns of the swap contracts (i.e., the fees and expenses reduce the investment returns of the swap contracts) and represent an indirect cost of investing in the Fund.
[4] "Other Expenses” does not include fees paid to the Fund’s swap contract counterparties, or the management fees, performance fees, and expenses of the reference assets or trading vehicles underlying such swap contracts. These fees and expenses, which are not reflected in this Annual Fund Operating Expenses table, are embedded in the returns of the swap contracts (i.e., the fees and expenses reduce the investment returns of the swap contracts) and represent an indirect cost of investing in the Fund.
[5] "Other Expenses” does not include fees paid to the Fund’s swap contract counterparties, or the management fees, performance fees, and expenses of the reference assets or trading vehicles underlying such swap contracts. These fees and expenses, which are not reflected in this Annual Fund Operating Expenses table, are embedded in the returns of the swap contracts (i.e., the fees and expenses reduce the investment returns of the swap contracts) and represent an indirect cost of investing in the Fund.
[6] "Other Expenses” does not include fees paid to the Fund’s swap contract counterparties, or the management fees, performance fees, and expenses of the reference assets or trading vehicles underlying such swap contracts. These fees and expenses, which are not reflected in this Annual Fund Operating Expenses table, are embedded in the returns of the swap contracts (i.e., the fees and expenses reduce the investment returns of the swap contracts) and represent an indirect cost of investing in the Fund.
[7] "Other Expenses” does not include fees paid to the Fund’s swap contract counterparties, or the management fees, performance fees, and expenses of the reference assets or trading vehicles underlying such swap contracts. These fees and expenses, which are not reflected in this Annual Fund Operating Expenses table, are embedded in the returns of the swap contracts (i.e., the fees and expenses reduce the investment returns of the swap contracts) and represent an indirect cost of investing in the Fund.
[8] "Other Expenses” does not include fees paid to the Fund’s swap contract counterparties, or the management fees, performance fees, and expenses of the reference assets or trading vehicles underlying such swap contracts. These fees and expenses, which are not reflected in this Annual Fund Operating Expenses table, are embedded in the returns of the swap contracts (i.e., the fees and expenses reduce the investment returns of the swap contracts) and represent an indirect cost of investing in the Fund.