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Risk/Return: rr_RiskReturnAbstract  
ProspectusDate rr_ProspectusDate Nov. 16, 2011
Rydex | SGI Total Return Bond Fund (Prospectus Summary) | Rydex | SGI Total Return Bond Fund
  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return, Heading rr_RiskReturnHeading Rydex | SGI Total Return Bond Fund
Investment Objective, Heading rr_ObjectiveHeading Investment Objective --
investment Objective, Primary rr_ObjectivePrimaryTextBlock 
The Fund seeks to provide total return, comprised of current income and
capital appreciation.
Expense, Heading rr_ExpenseHeading Fees and Expenses of the Fund --
Expense, Narrative rr_ExpenseNarrativeTextBlock 
This table describes the fees and expenses that you may pay if you buy and
hold shares of the Fund. You may qualify for sales charge discounts if you
and your family invest, or agree to invest in the future, at least $50,000
in the Rydex | SGI Funds, as defined on page 46 of the Fund's prospectus.
More information about these and other discounts is available from your
financial professional and in the "Buying Shares--Class A Shares" section
on page 34 of the Fund's prospectus and the "How to Purchase Shares"
section on page 37 of the Fund's statement of additional information.
Shareholder Fees, Caption rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Operating Expenses, Caption 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 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 annual fund operating expenses or in the example, affect the Fund's
performance. No portfolio turnover rate is provided for the Fund because the
Fund has not yet commenced operations.
Expense Breakpoint, Discounts rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the Rydex | SGI Funds, as defined on page 46 of the Fund's prospectus.
Expense Breakpoint, Minimum Investment Required Amount rr_ExpenseBreakpointMinimumInvestmentRequiredAmount 50,000
Expense Example, Heading rr_ExpenseExampleHeading Example.
Expense Example, Narrative 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.

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 the actual costs may be
higher or lower, based on these assumptions your cost would be:
Investment Strategy, Heading rr_StrategyHeading Principal Investment Strategies --
Investment Strategy, Narrative rr_StrategyNarrativeTextBlock 
The Fund intends to pursue its investment objective by investing at least
80% of its assets (net assets, plus the amount of any borrowings for
investment purposes) in debt securities.  Such debt securities may include,
corporate bonds and other corporate debt securities, securities issued by
the U.S. government or its agencies and instrumentalities, mortgage-backed
and asset-backed securities, participations in and assignments of syndicated
bank loans, zero-coupon bonds, municipal bonds, payment-in-kind securities
(such as payment-in-kind bonds), convertible fixed-income securities,
Rule 144A securities (and other non-registered or restricted securities) and
step-up securities (such as step-up bonds). These securities may pay fixed or
variable rates of interest.  While the Fund will principally invest in debt
securities listed, traded or dealt in developed markets, it may also invest
without limitation in securities listed, traded or dealt in other countries,
including emerging markets countries. Such securities may be denominated in
foreign currencies. The Fund may also invest in preferred stock and convertible
securities. The Fund may invest in a variety of investment vehicles,
principally, closed-end funds, exchange traded funds ("ETFs") and other mutual
funds.

The Fund may hold fixed income securities of any quality, rated or unrated,
including those that are rated below investment grade, or if unrated,
determined to be of comparable quality (also known as "high yield securities" or
"junk bonds"). However, the Fund may not invest more than 20% of its assets in
fixed-income securities that are below investment grade. The Fund may hold
securities of any duration or maturity.

With respect to syndicated bank loans, the Fund may purchase participations in,
or assignments of, floating rate syndicated bank loans that meet certain
liquidity standards and will provide for interest rate adjustments at least
every 397 days and which may be secured by real estate or other assets. These
participations may be interests in, or assignments of, the loan and may be
acquired from banks or brokers that have made the loan or members of the lending
syndicate.

The Fund also may seek certain exposures through derivative transactions,
principally, foreign exchange forward contracts, futures on securities, indices,
currencies and other investments; options; interest rate swaps, cross-currency
swaps, total return swaps; and credit default swaps, which may also create
economic leverage in the Fund. The Fund may engage in derivative transactions
for speculative purposes to enhance total return, to seek to hedge against
fluctuations in securities prices, interest rates or currency rates, to change
the effective duration of its portfolio, to manage certain investment risks
and/or as a substitute for the purchase or sale of securities or currencies. The
Fund may seek to obtain market exposure to the securities in which it primarily
invests by entering into a series of purchase and sale contracts or by using
other investment techniques (such as buy backs and or dollar rolls).

Guggenheim Partners Asset Management ("Guggenheim Investments"), the Fund's
sub-adviser, uses a process for selecting securities for purchase and sale that
is based on intensive credit research and involves extensive due diligence on
each issuer, region and sector. Guggenheim Investments also considers
macroeconomic outlook and geopolitical issues.

Guggenheim Investments may determine to sell a security for several reasons
including the following: (1) to adjust the portfolio's average maturity, or to
shift assets into or out of higher-yielding securities; (2) if a security's
credit rating has been changed or for other credit reasons; (3) to meet
redemption requests; (4) to take gains; or (5) due to relative value. The Fund
does not intend to principally invest in defaulted securities, but if a security
defaults subsequent to purchase by the Fund, Guggenheim Investments will
determine in its discretion whether to hold or dispose of such security. Under
adverse market conditions (for example, in the event of credit events, where it
is deemed opportune to preserve gains, or to preserve the relative value of
investments), the Fund can make temporary defensive investments and may not be
able to pursue its objective.
Risk, Heading rr_RiskHeading Principal Risks --
Risk, Narrative rr_RiskNarrativeTextBlock 
The value of an investment in the Fund will fluctuate and is subject to investment
risks, which means investors could lose money. The principal risks of investing
in the Fund are listed below.

Active Trading Risk. Active trading, also called "high turnover," may have a
negative impact on performance. Active trading may result in higher brokerage
costs or mark-up charges, which are ultimately passed on to shareholders of the
Fund.

Asset-Backed and Mortgage-Backed Securities Risk. Investors in asset-backed
securities, including mortgage-backed securities, generally receive payments
that are part interest and part return of principal. These payments may vary
based on the rate at which the underlying borrowers pay off their loans. Some
asset-backed securities, including mortgage-backed securities, may have
structures that make their reaction to interest rates and other factors
difficult to predict, making their prices very volatile and they are subject to
liquidity risk.

Convertible Securities Risk. The value of convertible securities tends to
decline as interest rates increase. Convertible securities generally offer lower
interest or dividend yields than non-convertible securities of similar quality.
The Fund could lose money if the issuer of a convertible security is unable to
meet its financial obligations or goes bankrupt.

Credit Derivative Transactions Risk. Credit derivative instruments may involve
special risks because they are difficult to value and typically are highly
susceptible to credit risk and may be difficult to sell. In addition, credit
default swap transactions may involve greater risks than if a Fund had invested
in the reference obligation directly.

Credit Risk. The Fund could lose money if the issuer of a bond or a counterparty
to a derivatives transaction or other transaction is unable to repay interest
and principal on time or defaults. The issuer of a bond could also suffer a
decrease in quality rating, which would affect the volatility and liquidity of
the bond.

Currency Risk. The Fund's indirect and direct exposure to foreign currencies
subjects the Fund to the risk that those currencies will decline in value
relative to the U.S. Dollar, which would cause a decline in the U.S. value of
the holdings of the Fund. Currency rates in foreign countries may fluctuate
significantly over short periods of time for a number of reasons, including
changes in interest rates and the imposition of currency controls or other
political, economic and tax developments in the U.S. or abroad.

Derivatives Risk. Derivatives may pose risks in addition to those associated
with investing directly in securities or other investments, including limited
ability to enter into or unwind a position, imperfect correlations with
underlying investments or the Fund' other portfolio holdings, lack of
availability and the risk that the counterparty may default on its obligations.

Emerging Markets Risk. Investments in emerging markets securities are generally
subject to a greater level of those risks associated with investing in foreign
securities, as emerging markets are considered less developed and developing
countries.

Foreign Securities Risk. Foreign securities carry additional risks when compared
to U.S. securities, including currency fluctuations, adverse political and
economic developments, unreliable or untimely information, less liquidity,
limited legal recourse and higher transactional costs.

High Yield Securities Risk. Higher yielding, below investment grade and other
high risk debt securities may present additional risk because these securities
may be less liquid and present more credit risk than investment grade bonds. The
price of high yield securities tends to be more susceptible to issuer-specific
operating results and outlook and to real or perceived adverse economic and
competitive industry conditions.

Insurance Risk. Certain municipal securities may be insured by an insurer, such
as a bank or other financial institution. Adverse developments affecting a
particular insurer or, more generally, banks and financial institutions could
have a negative effect on the value of the Fund's holdings in insured municipal
securities. While insurance may reduce the credit risk of a municipal security,
it does not protect against fluctuations in the value of the Fund's shares
caused by market changes.

Interest Rate Risk. Investments in fixed-income securities are subject to the
possibility that interest rates could rise sharply, causing the value of the
Fund's securities and share price to decline. Fixed-income securities with
longer durations are subject to more volatility than those with shorter
durations.

Investment in Investment Vehicles Risk. Investing in other investment vehicles,
including closed-end funds ETFs and other mutual funds, subjects the Fund to
those risks affecting the investment vehicle, including the possibility that the
value of the underlying securities held by the investment vehicle could
decrease. Moreover, the Fund and its shareholders will incur its pro rata share
of the underlying vehicles' expenses.

Investments in Syndicated Bank Loans Risk. Investments in syndicated bank loans
involve special types of risks, including credit risk, interest rate risk,
liquidity risk and prepayment risk. Syndicated bank loans generally offer a
floating interest rate. Syndicated bank loans may decline in value if their
interest rates do not rise as much or as fast as interest rates in general.

Leverage Risk. The Fund's use of leverage , through instruments such as
derivatives, may cause the Fund to be more volatile than if it had not been
leveraged. Leverage can arise through the use of derivatives and unfunded
commitments.

Liquidity Risk. Investments are subject to liquidity risk when they are
difficult to purchase or sell.

Management Risk. The Fund is actively managed. There is no guarantee that the
investment strategies will be successful.

Market Risk. The market value of the securities held by the Fund may fluctuate
resulting from factors affecting the individual company or other factors such as
changing economic, political or financial market conditions.

Municipal Securities Risk. Municipal securities can be affected by unfavorable
legislative or political developments and adverse changes in the financial
conditions of state and municipal issuers or the federal government in case it
provides financial support to the municipality. Certain sectors of the municipal
bond market have special risks that can affect them more significantly than the
market as a whole. Because many municipal instruments are issued to finance
similar projects, conditions in these industries can significantly affect the
overall municipal market.

Preferred Securities Risk. A company's preferred stock generally pays dividends
only after the company makes required payments to holders of its bonds and other
debt. For this reason, the value of preferred stock will usually react more
strongly than bonds and other debt to actual or perceived changes in the
company's financial condition or prospects.

Prepayment Risk. Securities subject to prepayment risk generally offer less
potential for gains when interest rates decline, because issuers of the
securities may be able to prepay the principal due on the securities, and may
offer a greater potential for loss when interest rates rise.

Real Estate Securities Risk. The Fund may invest in securities of real estate
companies and companies related to the real estate industry, including real
estate investment trusts ("REITs"), which are subject to the same risks as
direct investments in real estate. The real estate industry is particularly
sensitive to economic downturns.

Restricted Securities Risk. Restricted securities generally cannot be sold to
the public and may involve a high degree of business, financial and liquidity
risk, which may result in substantial losses to the Fund.
Risk, Lose Money rr_RiskLoseMoney The value of an investment in the Fund will fluctuate and is subject to investment risks, which means investors could lose money.
Bar Chart and Performance Table, Heading rr_BarChartAndPerformanceTableHeading Performance Information --
Performance, Narrative rr_PerformanceNarrativeTextBlock 
As of the date of this Prospectus, the Fund has not commenced investment
operations. When the Fund has completed a full calendar year of investment
operations, it will disclose charts that show annual total returns, highest
and lowest quarterly returns and average annual total returns(before and
after taxes)compared to a benchmark index selected by the Fund.
Performance, One Year or Less rr_PerformanceOneYearOrLess As of the date of this Prospectus, the Fund has not commenced investment operations.
Rydex | SGI Total Return Bond Fund (Prospectus Summary) | Rydex | SGI Total Return Bond Fund | Class A
  
Risk/Return: rr_RiskReturnAbstract  
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination 2013-01-31
Rydex | SGI Total Return Bond Fund (Prospectus Summary) | Rydex | SGI Total Return Bond Fund | Class C
  
Risk/Return: rr_RiskReturnAbstract  
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination 2013-01-31
Rydex | SGI Total Return Bond Fund (Prospectus Summary) | Rydex | SGI Total Return Bond Fund | Institutional Class
  
Risk/Return: rr_RiskReturnAbstract  
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination 2013-01-31
Rydex | SGI Total Return Bond Fund | Class A
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 4.75%
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.50%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.68%
Total annual fund operating expenses rr_ExpensesOverAssets 1.43%
Fee waiver (and/or expense reimbursement) rr_FeeWaiverOrReimbursementOverAssets (0.55%) [1]
Total annual fund operating expenses after fee waiver (and/or expense reimbursement) rr_NetExpensesOverAssets 0.88%
Expense Example, With Redemption, 1 Year rr_ExpenseExampleYear01 561
Expense Example, With Redemption, 3 Years rr_ExpenseExampleYear03 854
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 561
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 854
Rydex | SGI Total Return Bond Fund | Class C
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00%
Management fees rr_ManagementFeesOverAssets 0.50%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.68%
Total annual fund operating expenses rr_ExpensesOverAssets 2.18%
Fee waiver (and/or expense reimbursement) rr_FeeWaiverOrReimbursementOverAssets (0.55%) [1]
Total annual fund operating expenses after fee waiver (and/or expense reimbursement) rr_NetExpensesOverAssets 1.63%
Expense Example, With Redemption, 1 Year rr_ExpenseExampleYear01 266
Expense Example, With Redemption, 3 Years rr_ExpenseExampleYear03 629
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 166
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 629
Rydex | SGI Total Return Bond Fund | Institutional Class
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.50%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.48%
Total annual fund operating expenses rr_ExpensesOverAssets 0.98%
Fee waiver (and/or expense reimbursement) rr_FeeWaiverOrReimbursementOverAssets (0.48%) [1]
Total annual fund operating expenses after fee waiver (and/or expense reimbursement) rr_NetExpensesOverAssets 0.50%
Expense Example, With Redemption, 1 Year rr_ExpenseExampleYear01 51
Expense Example, With Redemption, 3 Years rr_ExpenseExampleYear03 264
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 51
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 264
[1] The Investment Manager has contractually agreed through January 31, 2013 to waive fees and/or reimburse expenses to the extent necessary to limit the ordinary operating expenses (including distribution (12b - 1) fees, but exclusive of brokerage costs, dividends on securities sold short, acquired fund fees and expenses, interest, taxes, litigation, indemnification, and extraordinary expenses) ("Operating Expenses") of the Fund to the annual percentage of average daily net assets for each class of shares as follows: Class A -- 0.88 %, Class C -- 1.63% and Institutional Class -- 0.50%. The Fund may have "Total annual fund operating expenses after fee waiver" greater than the expense cap as a result of any acquired fund fees and expenses or other expenses that are excluded from the calculation. The Investment Manager is entitled to reimbursement by the Fund of fees waived or expenses reimbursed during any of the previous 36 months beginning on the date of the expense limitation agreement. The agreement will expire when it reaches its termination or when the investment adviser ceases to serve as such (subject to recoupment rights) and it can be terminated by the Fund's Board of Directors, subject to the recoupment rights of the Investment Manager.