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Label Element Value
[RiskReturnAbstract] rr_RiskReturnAbstract  
Document Type dei_DocumentType 497
Document Period End Date dei_DocumentPeriodEndDate Sep. 30, 2012
Registrant Name dei_EntityRegistrantName SECURITY EQUITY FUND
Central Index Key dei_EntityCentralIndexKey 0000088525
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate Mar. 21, 2013
Document Effective Date dei_DocumentEffectiveDate Mar. 22, 2013
Prospectus Date rr_ProspectusDate Jan. 28, 2013
Large Cap Core Fund | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading

Large Cap Core Fund
Objective [Heading] rr_ObjectiveHeading

INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Large Cap Core Fund seeks long-term growth of capital.
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 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 $100,000 in the Family of Funds, as defined on page 70 of the Fund’s prospectus. More information about these and other discounts is available from your financial professional and in the “Sales Charges – Class A Shares” section on page 39 of the Fund’s prospectus and the “How to Purchase Shares” section on page 36 of the Fund’s statement of additional information.
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 annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 101% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 101.00%
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Family of Funds, as defined on page 70 of the Fund’s prospectus.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount 100,000
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.

 

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 costs would be:
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption

Redeemed
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

Not Redeemed
Strategy [Heading] rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund pursues its objective by investing, under normal market conditions, at least 80% of its assets (net assets, plus the amount of any borrowing for investment purposes) in a widely-diversified portfolio of equity securities, which may include common stocks, rights, options, warrants, American Depositary Receipts (“ADRs”) and convertible securities, of companies that, when purchased, have market capitalizations that are usually within the range of companies in the S&P 500 Index. Although a universal definition of large market capitalization companies does not exist, the fund generally defines large market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the S&P 500 Index, which is an unmanaged index composed of 500 selected common stocks that represent approximately two-thirds of the total market value of all U.S. common stocks.

 

The Fund pursues its objective by investing, under normal market conditions, in two discrete strategies as follows: (1) approximately 50% of its total assets according to a Large Cap Growth strategy managed by Security Investors, LLC, also known as Guggenheim Investments (the “Investment Manager”), and (2) approximately 50% of its total assets to a Large Cap Value strategy also managed by the Investment Manager.

 

The Investment Manager manages its allocation of the Fund’s assets according to each of the two respective strategies, and the trading decisions with respect to each of the strategies are made independently. In order to maintain the target allocations between the two strategies, all daily cash inflows (purchases and reinvested distributions) and outflows (redemptions and expense items) will be divided between the two strategies, as appropriate. The Investment Manager will rebalance the allocation to the Fund’s two strategies promptly to the extent the percentage of the Fund’s assets allocated to either strategy equals or exceeds 60% of the Fund’s total assets.

 

The Investment Manager in its discretion may make adjustments if either of the two strategies becomes over- or under-weighted as a result of market appreciation or depreciation. Accordingly, the performance of the Fund could differ from the performance of each strategy if either had been maintained as a separate portfolio. As a consequence of the Investment Manager’s efforts to maintain assets between the two strategies at the targeted percentages, the Investment Manager will allocate assets and rebalance when necessary by (1) allocating cash inflow to the strategy that is below its targeted percentage or (2) selling securities in the strategy that exceeds its targeted percentage with proceeds being reallocated to the strategy that is below its targeted percentage.

 

In choosing equity securities, the Investment Manager uses a blended approach, investing in growth stocks and value stocks and may invest in a limited number of industries or industry sectors, including the technology sector. Growth-oriented stocks are stocks of established companies that typically have a record of consistent earnings growth. The Investment Manager typically chooses growth-oriented companies through a combination of a qualitative top-down approach in reviewing growth trends that is based upon several fixed income factors, such as bond spreads and interest rates, and a quantitative fundamental bottom-up approach. The Investment Manager will also invest in value-oriented stocks. Value-oriented companies appear to be undervalued relative to assets, earnings, growth potential or cash flows. The Investment Manager uses a blend of qualitative analysis and fundamental research to identify securities that appear favorably priced and that may be able to sustain or improve their pre-tax ROIC (Return on Invested Capital) over time. The Fund typically sells a security when the reasons for buying it no longer apply, when the company begins to show deteriorating fundamentals or poor relative performance, or falls short of the Investment Manager’s expectations.

 

The Fund also may invest a portion of its assets in derivatives, including options and futures contracts. These instruments may be used to hedge the Fund’s portfolio, to maintain exposure to the equity markets or to increase returns.

 

The Fund may invest in a variety of investment vehicles, including those that seek to track the composition and performance of a specific index, such as exchange traded funds (“ETFs”) and other mutual funds. The Fund may use these index-based investments as a way of managing its cash position, to gain exposure to the equity markets, or a particular sector of the equity market, while maintaining liquidity.

 

The Fund may, from time to time, invest a portion of its assets in technology stocks.

 

Although the Fund primarily invests in securities issued by domestic companies, there is no limit in the amount that the Fund may invest in securities issued by foreign companies.

 

The Fund actively trades its investments without regard to the length of time they have been owned by the Fund, which results in higher portfolio turnover.

 

Under adverse or unstable market conditions, the Fund could invest some or all of its assets in cash, fixed-income securities, government bonds, money market securities, or repurchase agreements. Although the Fund would do this only in seeking to avoid losses, the Fund may be unable to pursue its investment objective during that time, and it could reduce the benefit from any upswing in the market.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration

The Fund pursues its objective by investing, under normal market conditions, at least 80% of its assets (net assets, plus the amount of any borrowing for investment purposes) in a widely-diversified portfolio of equity securities, which may include common stocks, rights, options, warrants, American Depositary Receipts (“ADRs”) and convertible securities, of companies that, when purchased, have market capitalizations that are usually within the range of companies in the S&P 500 Index.
Risk [Heading] rr_RiskHeading

PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. 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.

 

Derivatives Risk – Derivatives may pose risks in addition to those associated with investing directly in securities or other investments, including possible illiquidity of the derivative, limited ability to enter into or unwind a position, imperfect correlations with underlying investments or the Fund’s other portfolio holdings, leverage risk, lack of availability and the risk that the counterparty may default on its obligations. If the Investment Manager is incorrect about its expectations of market conditions, the use of derivatives could result in a loss, which in some cases may be unlimited.

 

Equity Securities Risk – Equity securities include common stocks and other equity securities (and securities convertible into stocks), and the prices of equity securities fluctuate in value more than other investments. They reflect changes in the issuing company’s financial condition and changes in the overall market. Common stocks generally represent the riskiest investment in a company. The Fund may lose a substantial part, or even all, of its investment in a company’s stock. Growth stocks may be more volatile than value stocks.

 

Foreign Securities Risk – Foreign securities, including investments in foreign securities through ADRs, 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.

 

Growth Stocks Risk – Growth stocks typically invest a high portion of their earnings back into their business and may lack the dividend yield that could cushion their decline in a market downturn. Growth stocks may be more volatile than other stocks because they are more sensitive to investor perceptions regarding the growth potential of the issuing company.

 

Investment in Investment Vehicles Risk – Investing in other investment vehicles, including 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.

 

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.

 

Leverage Risk – The Fund’s use of leverage, through borrowings or instruments such as derivatives, may cause the Fund to be more volatile than if it had not been leveraged.

 

Liquidity and Valuation Risk – In certain circumstances, it may be difficult for the Fund to purchase and sell particular investments within a reasonable time at a fair price, or the price at which it has been valued by the Investment Manager for purposes of the Fund’s net asset value, causing the Fund to be less liquid and unable to realize what the Investment Manager believes should be the price of the investment.

 

Management Risk – The Fund is actively managed, which means that investment decisions are made based on investment views. There is no guarantee that the investment views will be successful. Furthermore, active trading that can accompany active management, 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.

 

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.

 

Regulatory and Legal Risk – U.S. and other regulators and governmental agencies may implement additional regulations and legislators may 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). These may impact the investment strategies, performance, costs and operations of the Fund or taxation of shareholders.

 

Technology Stocks Risk – Stocks of companies involved in the technology sector may be very volatile.

 

Value Stocks Risk – Value stocks are subject to the risk that the intrinsic value of the stock may never be realized by the market or that the price goes down.
Risk Lose Money [Text] rr_RiskLoseMoney

The value of an investment in the Fund will fluctuate and is subject to investment risks, which means investors could lose money.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s Class A share performance from year to year and by showing how the Fund’s average annual returns for one, five, and ten years have compared to those of a broad measure of market performance. As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of 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 1-800-820-0888.

 

The bar chart does not reflect the impact of the sales charge applicable to Class A shares which, if reflected, would lower the returns shown.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns

The following chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s Class A share performance from year to year and by showing how the Fund’s average annual returns for one, five, and ten years have compared to those of a broad measure of market performance.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone

1-800-820-0888
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress

www.guggenheiminvestments.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture

As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads

The bar chart does not reflect the impact of the sales charge applicable to Class A shares which, if reflected, would lower the returns shown.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarter Return   Lowest Quarter Return
3Q 2009 16.38%   4Q 2008 -22.03%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel

Highest Quarterly Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 16.38%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (22.03%)
Performance Table Heading rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS (for the periods ended December 31, 2012)
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes

reflects no deductions for fees, expenses or taxes
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate

After-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any state or local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock

After-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any state or local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class A only. After-tax returns for Class B and C will vary.
Large Cap Core Fund | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] 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 0.75%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.36%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.36%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 607
3 Years rr_ExpenseExampleYear03 885
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,184
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,032
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 607
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 885
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,184
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,032
Annual Return 2003 rr_AnnualReturn2003 20.90%
Annual Return 2004 rr_AnnualReturn2004 7.40%
Annual Return 2005 rr_AnnualReturn2005 3.80%
Annual Return 2006 rr_AnnualReturn2006 12.00%
Annual Return 2007 rr_AnnualReturn2007 (5.10%)
Annual Return 2008 rr_AnnualReturn2008 (37.60%)
Annual Return 2009 rr_AnnualReturn2009 28.80%
Annual Return 2010 rr_AnnualReturn2010 15.60%
Annual Return 2011 rr_AnnualReturn2011 (4.40%)
Annual Return 2012 rr_AnnualReturn2012 12.40%
Label rr_AverageAnnualReturnLabel

Class A Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 7.12%
5 Years rr_AverageAnnualReturnYear05 (1.17%)
10 Years rr_AverageAnnualReturnYear10 3.04%
Large Cap Core Fund | Class B | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none [1]
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOfferingPrice 5.00%
Management Fees rr_ManagementFeesOverAssets 0.75%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.84%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.59%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 762
3 Years rr_ExpenseExampleYear03 1,105
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,575
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,624
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 262
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 805
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,375
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,624
Label rr_AverageAnnualReturnLabel

Class B Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 5.95%
5 Years rr_AverageAnnualReturnYear05 (1.27%)
10 Years rr_AverageAnnualReturnYear10 3.03%
Large Cap Core Fund | Class C | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] 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 0.75%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.47%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.22%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 325
3 Years rr_ExpenseExampleYear03 694
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,190
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,554
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 225
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 694
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,190
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,554
Label rr_AverageAnnualReturnLabel

Class C Return before taxes
1 Year rr_AverageAnnualReturnYear01 10.39%
5 Years rr_AverageAnnualReturnYear05 (0.79%)
10 Years rr_AverageAnnualReturnYear10 2.88%
Large Cap Core Fund | Return After Taxes on Distributions | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Class A Return after taxes on distributions
1 Year rr_AverageAnnualReturnYear01 6.98%
5 Years rr_AverageAnnualReturnYear05 (1.27%)
10 Years rr_AverageAnnualReturnYear10 2.35%
Large Cap Core Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Class A Return after taxes on distributions and sale of fund shares
1 Year rr_AverageAnnualReturnYear01 4.63%
5 Years rr_AverageAnnualReturnYear05 (1.05%)
10 Years rr_AverageAnnualReturnYear10 2.50%
Large Cap Core Fund | S&P 500 Index (reflects no deductions for fees, expenses or taxes) | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

S&P 500 Index (reflects no deductions for fees, expenses, or taxes)
1 Year rr_AverageAnnualReturnYear01 16.00%
5 Years rr_AverageAnnualReturnYear05 1.66%
10 Years rr_AverageAnnualReturnYear10 7.10%
Mid Cap Value | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading

Mid Cap Value Fund
Objective [Heading] rr_ObjectiveHeading

INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Mid Cap Value Fund seeks long-term growth of capital.
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 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 $100,000 in the Family of Funds, as defined on page 70 of the Fund’s prospectus. More information about these and other discounts is available from your financial professional and in the “Sales Charges – Class A Shares” section on page 39 of the Fund’s prospectus and the “How to Purchase Shares” section on page 36 of the Fund’s statement of additional information.
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 annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 19% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 19.00%
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Family of Funds, as defined on page 70 of the Fund’s prospectus.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount 100,000
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.

 

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 costs would be:
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption

Redeemed
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

Not Redeemed
Strategy [Heading] rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund pursues its objective by investing, under normal market conditions, at least 80% of its assets (net assets, plus the amount of any borrowing for investment purposes) in a diversified portfolio of equity securities, which include common stocks, rights, options, warrants, convertible debt securities, and American Depositary Receipts (“ADRs”), that, when purchased, have market capitalizations that are usually within the range of companies in the Russell 2500 Value Index. Although a universal definition of mid-capitalization companies does not exist, the Fund generally defines mid-capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell 2500 Value Index, which is an unmanaged index that measures the performance of securities of small-to-mid cap U.S. companies with greater-than-average value orientation. As of December 31, 2012, the index consisted of securities of companies with capitalizations that ranged from $30 million to $10 billion.

 

Security Investors, LLC, also known as Guggenheim Investments (the “Investment Manager”), typically chooses equity securities that appear undervalued relative to assets, earnings, growth potential or cash flows and may invest in a limited number of industries or industry sectors, including the technology sector. Due to the nature of value companies, the securities included in the Fund’s portfolio typically consist of small- to medium-sized companies.

 

The Fund may sell a security if it is no longer considered undervalued or when the company begins to show deteriorating fundamentals.

 

The Fund also may invest a portion of its assets in derivatives, including options and futures contracts. These instruments may be used to hedge the Fund’s portfolio, to maintain exposure to the equity markets or to increase returns.

 

The Fund may, from time to time, invest a portion of its assets in technology stocks.

 

The Fund may invest in a variety of investment vehicles, including those that seek to track the composition and performance of a specific index, such as exchange traded funds (“ETFs”) and other mutual funds. The Fund may use these index-based investments as a way of managing its cash position to gain exposure to the equity markets or a particular sector of the equity market, while maintaining liquidity. Certain investment vehicles’ securities and other securities in which the Fund may invest are restricted securities, which may be illiquid.

 

Under adverse or unstable market conditions, the Fund could invest some or all of its assets in cash, fixed-income securities, government bonds, money market securities, or repurchase agreements. Although the Fund would do this only in seeking to avoid losses, the Fund may be unable to pursue its investment objective during that time, and it could reduce the benefit from any upswing in the market.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration

The Fund pursues its objective by investing, under normal market conditions, at least 80% of its assets (net assets, plus the amount of any borrowing for investment purposes) in a diversified portfolio of equity securities, which include common stocks, rights, options, warrants, convertible debt securities, and American Depositary Receipts (“ADRs”), that, when purchased, have market capitalizations that are usually within the range of companies in the Russell 2500 Value Index.

 
Risk [Heading] rr_RiskHeading

PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. 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.

 

Derivatives Risk – Derivatives may pose risks in addition to those associated with investing directly in securities or other investments, including possible illiquidity of the derivative, limited ability to enter into or unwind a position, imperfect correlations with underlying investments or the Fund’s other portfolio holdings, leverage risk, lack of availability and the risk that the counterparty may default on its obligations. If the Investment Manager is incorrect about its expectations of market conditions, the use of derivatives could result in a loss, which in some cases may be unlimited.

 

Equity Securities Risk – Equity securities include common stocks and other equity securities (and securities convertible into stocks), and the prices of equity securities fluctuate in value more than other investments. They reflect changes in the issuing company’s financial condition and changes in the overall market. Common stocks generally represent the riskiest investment in a company. The Fund may lose a substantial part, or even all, of its investment in a company’s stock. Growth stocks may be more volatile than value stocks.

 

Foreign Securities Risk – Foreign securities, including investments in foreign securities through ADRs, 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.

 

Investment in Investment Vehicles Risk – Investing in other investment vehicles, including 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.

 

Leverage Risk – The Fund’s use of leverage, through borrowings or instruments such as derivatives, may cause the Fund to be more volatile than if it had not been leveraged.

 

Liquidity and Valuation Risk – In certain circumstances, it may be difficult for the Fund to purchase and sell particular investments within a reasonable time at a fair price, or the price at which it has been valued by the Investment Manager for purposes of the Fund’s net asset value, causing the Fund to be less liquid and unable to realize what the Investment Manager believes should be the price of the investment.

 

Management Risk – The Fund is actively managed, which means that investment decisions are made based on investment views. There is no guarantee that the investment views will be successful. Furthermore, active trading that can accompany active management, 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.

 

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.

 

Mid-Capitalization Securities Risk – The Fund is subject to the risk that medium-capitalization stocks may underperform other segments of the equity market or the equity market as a whole. Securities of medium-capitalization companies may experience more price volatility, greater spreads between their bid and ask prices, lower trading volumes, and cyclical or static growth prospects. Medium-capitalization companies often have limited product lines, markets or financial resources, and may therefore be more vulnerable to adverse developments than larger capitalization companies.

 

Regulatory and Legal Risk – U.S. and other regulators and governmental agencies may implement additional regulations and legislators may 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). These may impact the investment strategies, performance, costs and operations of the Fund or taxation of shareholders.

 

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.

 

Technology Stocks Risk – Stocks of companies involved in the technology sector may be very volatile.

 

Value Stocks Risk – Value stocks are subject to the risk that the intrinsic value of the stock may never be realized by the market or that the price goes down.
Risk Lose Money [Text] rr_RiskLoseMoney

The value of an investment in the Fund will fluctuate and is subject to investment risks, which means investors could lose money.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s Class A share performance from year to year and by showing how the Fund’s average annual returns for one, five, and ten years have compared to those of a broad measure of market performance. As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of 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 1-800-820-0888.

 

The bar chart does not reflect the impact of the sales charge applicable to Class A shares which, if reflected, would lower the returns shown.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns

The following chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s Class A share performance from year to year and by showing how the Fund’s average annual returns for one, five, and ten years have compared to those of a broad measure of market performance.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone

1-800-820-0888
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress

www.guggenheiminvestments.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture

As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads

The bar chart does not reflect the impact of the sales charge applicable to Class A shares which, if reflected, would lower the returns shown.

 
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Highest Quarter Return

2Q 2003 27.21%

  

Lowest Quarter Return

4Q 2008 -20.21%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel

Highest Quarterly Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2003
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 27.21%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (20.21%)
Performance Table Heading rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, 2012)
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes

reflects no deductions for fees, expenses or taxes
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate

After-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any state or local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock

After-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any state or local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class A only. After-tax returns for Class B and C will vary.
Mid Cap Value | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] 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 0.79% [2]
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.42%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.06%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.52%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 622
3 Years rr_ExpenseExampleYear03 932
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,265
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,201
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 622
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 932
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,265
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,201
Annual Return 2003 rr_AnnualReturn2003 51.80%
Annual Return 2004 rr_AnnualReturn2004 26.80%
Annual Return 2005 rr_AnnualReturn2005 15.70%
Annual Return 2006 rr_AnnualReturn2006 14.90%
Annual Return 2007 rr_AnnualReturn2007 1.00%
Annual Return 2008 rr_AnnualReturn2008 (27.20%)
Annual Return 2009 rr_AnnualReturn2009 40.30%
Annual Return 2010 rr_AnnualReturn2010 16.70%
Annual Return 2011 rr_AnnualReturn2011 (7.20%)
Annual Return 2012 rr_AnnualReturn2012 16.70%
Label rr_AverageAnnualReturnLabel

Class A Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 11.11%
5 Years rr_AverageAnnualReturnYear05 3.99%
10 Years rr_AverageAnnualReturnYear10 12.14%
Mid Cap Value | Class B | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none [1]
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOfferingPrice 5.00%
Management Fees rr_ManagementFeesOverAssets 0.79% [2]
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.54%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.06%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.39%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 742
3 Years rr_ExpenseExampleYear03 1,045
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,475
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,510
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 242
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 745
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,275
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,510
Label rr_AverageAnnualReturnLabel

Class B Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 10.57%
5 Years rr_AverageAnnualReturnYear05 4.10%
10 Years rr_AverageAnnualReturnYear10 12.14%
Mid Cap Value | Class C | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] 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 0.79% [2]
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.38%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.06%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.23%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 326
3 Years rr_ExpenseExampleYear03 697
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,195
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,565
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 226
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 697
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,195
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,565
Label rr_AverageAnnualReturnLabel

Class C Return before taxes
1 Year rr_AverageAnnualReturnYear01 14.80%
5 Years rr_AverageAnnualReturnYear05 4.45%
10 Years rr_AverageAnnualReturnYear10 11.97%
Mid Cap Value | Return After Taxes on Distributions | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Class A Return after taxes on distributions
1 Year rr_AverageAnnualReturnYear01 9.37%
5 Years rr_AverageAnnualReturnYear05 3.16%
10 Years rr_AverageAnnualReturnYear10 10.95%
Mid Cap Value | Return After Taxes on Distributions and Sale of Fund Shares | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Class A Return after taxes on distributions and sale of fund shares
1 Year rr_AverageAnnualReturnYear01 9.49%
5 Years rr_AverageAnnualReturnYear05 3.22%
10 Years rr_AverageAnnualReturnYear10 10.56%
Mid Cap Value | Russell 2500 Value Index (reflects no deductions for fees, expenses or taxes) | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Russell 2500 Value Index (reflects no deductions for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 19.21%
5 Years rr_AverageAnnualReturnYear05 4.54%
10 Years rr_AverageAnnualReturnYear10 10.20%
Small Cap Growth | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading

Small Cap Growth Fund
Objective [Heading] rr_ObjectiveHeading

INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Small Cap Growth Fund seeks long-term growth of capital.
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 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 $100,000 in the Family of Funds, as defined on page 70 of the Fund’s prospectus. More information about these and other discounts is available from your financial professional and in the “Sales Charges – Class A Shares” section on page 39 of the Fund’s prospectus and the “How to Purchase Shares” section on page 36 of the Fund’s statement of additional information.
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 annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 82% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 82.00%
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Family of Funds, as defined on page 70 of the Fund’s prospectus.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount 100,000
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.

 

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 costs would be:
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption

Redeemed
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

Not Redeemed
Strategy [Heading] rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund pursues its investment objective by investing, under normal circumstances, at least 80% of its assets (net assets, plus the amount of any borrowing for investment purposes) in equity securities, which include common and preferred stocks, warrants and securities convertible into common or preferred stocks, of companies that, when purchased, have market capitalizations that are usually within the range of companies in the Russell 2500 Growth Index. The Fund’s benchmark is the Russell 2000 Growth Index, which measures the performance of securities of smaller U.S. companies with greater-than-average growth orientation. Although a universal definition of small-capitalization companies does not exist, the Fund generally defines small capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell 2500 Growth Index, which is an unmanaged index that measures the performance of securities of small-to-mid cap U.S. companies with higher price-to-book ratios and higher forecasted growth values. As of December 31, 2012, the Russell 2500 Growth Index consisted of securities of companies with capitalizations that ranged from $28 million to $5 billion.

 

Security Investors, LLC, also known as Guggenheim Investments (the “Investment Manager”), uses a combination of a qualitative economic approach in reviewing growth trends that is based upon several fixed income factors, such as bond spreads and interest rates, along with a quantitative fundamental bottom-up approach in selecting growth stocks. The Investment Manager chooses portfolio securities that it believes are attractively valued with the greatest potential for long term growth of capital and may invest in a limited number of industries or industry sectors. The Investment Manager identifies the securities of companies that it believes are in the early to middle stages of growth and are valued at a reasonable price. Equity securities considered to have appreciation potential may include securities of smaller and less mature companies which have unique proprietary products or profitable market niches and the potential to grow very rapidly (including, without limitation, technology companies).

 

The Fund typically sells a stock if its growth prospects diminish, or if better opportunities become available.

 

The Fund also may invest a portion of its assets in derivatives, including options and futures contracts. These instruments may be used to hedge the Fund's portfolio, to increase returns or to maintain exposure to the equity markets. The Fund may also invest in American Depositary Receipts (“ADRs”).

 

The Fund may actively trade its investments without regard to the length of time they have been owned by the Fund, which results in higher portfolio turnover.

 

The Fund may, from time to time, invest a portion of its assets in technology stocks.

 

The Fund may invest in a variety of investment vehicles, including those that seek to track the composition and performance of a specific index, such as exchange traded funds (“ETFs”) and other mutual funds. The Fund may use these index-based investments as a way of managing its cash position, to gain exposure to the equity markets, or a particular sector of the equity market, while maintaining liquidity. Certain investment company securities and other securities in which the Fund may invest are restricted securities, which may be illiquid.

 

Under adverse or unstable market conditions, the Fund could invest some or all of its assets in cash, fixed-income securities, government bonds, money market securities, or repurchase agreements. Although the Fund would do this only in seeking to avoid losses, the Fund may be unable to pursue its investment objective during that time, and it could reduce the benefit from any upswing in the market.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration

The Fund pursues its investment objective by investing, under normal circumstances, at least 80% of its assets (net assets, plus the amount of any borrowing for investment purposes) in equity securities, which include common and preferred stocks, warrants and securities convertible into common or preferred stocks, of companies that, when purchased, have market capitalizations that are usually within the range of companies in the Russell 2500 Growth Index.
Risk [Heading] rr_RiskHeading

PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. 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.

 

Derivatives Risk – Derivatives may pose risks in addition to those associated with investing directly in securities or other investments, including possible illiquidity of the derivative, limited ability to enter into or unwind a position, imperfect correlations with underlying investments or the Fund’s other portfolio holdings, leverage risk, lack of availability and the risk that the counterparty may default on its obligations. If the Investment Manager is incorrect about its expectations of market conditions, the use of derivatives could result in a loss, which in some cases may be unlimited.

 

Equity Securities Risk – Equity securities include common stocks and other equity securities (and securities convertible into stocks), and the prices of equity securities fluctuate in value more than other investments. They reflect changes in the issuing company’s financial condition and changes in the overall market. Common stocks generally represent the riskiest investment in a company. The Fund may lose a substantial part, or even all, of its investment in a company’s stock. Growth stocks may be more volatile than value stocks.

 

Foreign Securities Risk – Foreign securities, including investments in foreign securities through ADRs, 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.

 

Growth Stocks Risk – Growth stocks typically invest a high portion of their earnings back into their business and may lack the dividend yield that could cushion their decline in a market downturn. Growth stocks may be more volatile than other stocks because they are more sensitive to investor perceptions regarding the growth potential of the issuing company.

 

Investment in Investment Vehicles Risk – Investing in other investment vehicles, including 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.

 

Leverage Risk – The Fund’s use of leverage, through borrowings or instruments such as derivatives, may cause the Fund to be more volatile than if it had not been leveraged.

 

Liquidity and Valuation Risk – In certain circumstances, it may be difficult for the Fund to purchase and sell particular investments within a reasonable time at a fair price, or the price at which it has been valued by the Investment Manager for purposes of the Fund’s net asset value, causing the Fund to be less liquid and unable to realize what the Investment Manager believes should be the price of the investment.

 

Management Risk – The Fund is actively managed, which means that investment decisions are made based on investment views. There is no guarantee that the investment views will be successful. Furthermore, active trading that can accompany active management, 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.

 

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.

 

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.

 

Regulatory and Legal Risk – U.S. and other regulators and governmental agencies may implement additional regulations and legislators may 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). These may impact the investment strategies, performance, costs and operations of the Fund or taxation of shareholders.

 

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.

 

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.

 

Technology Stocks Risk – Stocks of companies involved in the technology sector may be very volatile.
Risk Lose Money [Text] rr_RiskLoseMoney

The value of an investment in the Fund will fluctuate and is subject to investment risks, which means investors could lose money.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s Class A share performance from year to year and by showing how the Fund’s average annual returns for one, five, and ten years have compared to those of a broad measure of market performance. As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of 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 1-800-820-0888.

 

The bar chart does not reflect the impact of the sales charge applicable to Class A shares which, if reflected, would lower the returns shown.

 

RS Investment Management Co. LLC served as the sub-adviser to the Fund from September 30, 2002 to November 24, 2008. Since then, advisory services have been provided by the Investment Manager, and the Fund has new principal investment strategies.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns

The following chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s Class A share performance from year to year and by showing how the Fund’s average annual returns for one, five, and ten years have compared to those of a broad measure of market performance.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone

1-800-820-0888
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress

www.guggenheiminvestments.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture

As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads

The bar chart does not reflect the impact of the sales charge applicable to Class A shares which, if reflected, would lower the returns shown.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Highest Quarter Return

2Q 2003 27.57%

  

Lowest Quarter Return

4Q 2008 -26.11%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel

Highest Quarterly Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2003
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 27.57%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (26.11%)
Performance Table Heading rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, 2012)
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes

reflects no deductions for fees, expenses or taxes
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate

After-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any state or local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock

After-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any state or local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class A only. After-tax returns for Class B and C will vary.
Small Cap Growth | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] 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 0.85%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 1.09%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.20%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 687
3 Years rr_ExpenseExampleYear03 1,130
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,599
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,889
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 687
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 1,130
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,599
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,889
Annual Return 2003 rr_AnnualReturn2003 55.10%
Annual Return 2004 rr_AnnualReturn2004 16.10%
Annual Return 2005 rr_AnnualReturn2005 6.70%
Annual Return 2006 rr_AnnualReturn2006 4.60%
Annual Return 2007 rr_AnnualReturn2007 4.80%
Annual Return 2008 rr_AnnualReturn2008 (48.00%)
Annual Return 2009 rr_AnnualReturn2009 32.90%
Annual Return 2010 rr_AnnualReturn2010 27.70%
Annual Return 2011 rr_AnnualReturn2011 (2.70%)
Annual Return 2012 rr_AnnualReturn2012 10.60%
Label rr_AverageAnnualReturnLabel

Class A Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 5.30%
5 Years rr_AverageAnnualReturnYear05 (2.21%)
10 Years rr_AverageAnnualReturnYear10 6.54%
Small Cap Growth | Class B | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none [1]
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOfferingPrice 5.00%
Management Fees rr_ManagementFeesOverAssets 0.85%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 1.95%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 3.81%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 883
3 Years rr_ExpenseExampleYear03 1,464
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 2,162
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 3,694
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 383
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 1,164
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,962
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 3,694
Label rr_AverageAnnualReturnLabel

Class B Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 3.48%
5 Years rr_AverageAnnualReturnYear05 (2.38%)
10 Years rr_AverageAnnualReturnYear10 6.55%
Small Cap Growth | Class C | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] 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 0.85%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 1.08%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.94%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 397
3 Years rr_ExpenseExampleYear03 910
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,548
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 3,261
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 297
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 910
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,548
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 3,261
Label rr_AverageAnnualReturnLabel

Class C Return before taxes
1 Year rr_AverageAnnualReturnYear01 8.69%
5 Years rr_AverageAnnualReturnYear05 (1.77%)
10 Years rr_AverageAnnualReturnYear10 6.38%
Small Cap Growth | Return After Taxes on Distributions | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Class A Return after taxes on distributions
1 Year rr_AverageAnnualReturnYear01 5.30%
5 Years rr_AverageAnnualReturnYear05 (2.23%)
10 Years rr_AverageAnnualReturnYear10 6.35%
Small Cap Growth | Return After Taxes on Distributions and Sale of Fund Shares | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Class A Return after taxes on distributions and sale of fund shares
1 Year rr_AverageAnnualReturnYear01 3.44%
5 Years rr_AverageAnnualReturnYear05 (1.87%)
10 Years rr_AverageAnnualReturnYear10 5.71%
Small Cap Growth | Russell 2000 Growth Index (reflects no deductions for fees, expenses or taxes) | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Russell 2000 Growth Index (reflects no deductions for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 14.59%
5 Years rr_AverageAnnualReturnYear05 3.49%
10 Years rr_AverageAnnualReturnYear10 9.80%
Small Cap Value | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading

Small Cap Value Fund
Objective [Heading] rr_ObjectiveHeading

INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Small Cap Value Fund seeks long-term capital appreciation.
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 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 $100,000 in the Family of Funds, as defined on page 70 of the Fund’s prospectus. More information about these and other discounts is available from your financial professional and in the “Sales Charges – Class A Shares” section on page 39 of the Fund’s prospectus and the “How to Purchase Shares” section on page 36 of the Fund’s statement of additional information.
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 annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 62% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 62.00%
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Family of Funds, as defined on page 70 of the Fund’s prospectus.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount 100,000
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.

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 costs would be:
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption

Redeemed
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

Not Redeemed
Expense Example Closing [Text Block] rr_ExpenseExampleClosingTextBlock

The above Examples reflect applicable contractual fee waiver/expense reimbursement arrangements for the duration of the arrangements only.
Strategy [Heading] rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund pursues its objective by investing, under normal market conditions, at least 80% of its assets (net assets, plus the amount of any borrowing for investment purposes) in a diversified portfolio of equity securities, which include common stocks, rights, options, warrants, convertible debt securities, and American Depositary Receipts (“ADRs”), that, when purchased, have market capitalizations that are usually within the range of companies in the Russell 2000 Value Index. Although a universal definition of small-capitalization companies does not exist, the Fund generally defines small-capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell 2000 Value Index, which is an unmanaged index measuring the performance of the small cap value segment of the U.S. equity universe and which includes companies with lower price-to-book ratios and lower forecasted growth values.

 

Security Investors, LLC, also known as Guggenheim Investments (the “Investment Manager”), typically chooses equity securities that appear undervalued relative to assets, earnings, growth potential or cash flows and may invest in a limited number of industries or industry sectors, including the technology sector.

 

The Fund may sell a security if it is no longer considered undervalued or when the company begins to show deteriorating fundamentals.

 

The Fund also may invest a portion of its assets in derivatives, including options and futures contracts. These instruments may be used to hedge the Fund’s portfolio, to maintain exposure to the equity markets or to increase returns.

 

The Fund may, from time to time, invest a portion of its assets in technology stocks.

 

The Fund may invest in a variety of investment vehicles, including those that seek to track the composition and performance of a specific index, such as exchange traded funds (“ETFs”) and other mutual funds. The Fund may use these index-based investments as a way of managing its cash position to gain exposure to the equity markets or a particular sector of the equity market, while maintaining liquidity. Certain investment vehicles’ securities and other securities in which the Fund may invest are restricted securities, which may be illiquid.

 

The Fund actively trades its investments without regard to the length of time they have been owned by the Fund, which results in higher portfolio turnover.

 

Under adverse or unstable market conditions, the Fund could invest some or all of its assets in cash, fixed-income securities, government bonds, money market securities, or repurchase agreements. Although the Fund would do this only in seeking to avoid losses, the Fund may be unable to pursue its investment objective during that time, and it could reduce the benefit from any upswing in the market.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration

The Fund pursues its objective by investing, under normal market conditions, at least 80% of its assets (net assets, plus the amount of any borrowing for investment purposes) in a diversified portfolio of equity securities, which include common stocks, rights, options, warrants, convertible debt securities, and American Depositary Receipts (“ADRs”), that, when purchased, have market capitalizations that are usually within the range of companies in the Russell 2000 Value Index.
Risk [Heading] rr_RiskHeading

PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. 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.

 

Derivatives Risk – Derivatives may pose risks in addition to those associated with investing directly in securities or other investments, including possible illiquidity of the derivative, limited ability to enter into or unwind a position, imperfect correlations with underlying investments or the Fund’s other portfolio holdings, leverage risk, lack of availability and the risk that the counterparty may default on its obligations. If the Investment Manager is incorrect about its expectations of market conditions, the use of derivatives could result in a loss, which in some cases may be unlimited.

 

Equity Securities Risk – Equity securities include common stocks and other equity securities (and securities convertible into stocks), and the prices of equity securities fluctuate in value more than other investments. They reflect changes in the issuing company’s financial condition and changes in the overall market. Common stocks generally represent the riskiest investment in a company. The Fund may lose a substantial part, or even all, of its investment in a company’s stock. Growth stocks may be more volatile than value stocks.

 

Foreign Securities Risk – Foreign securities, including investments in foreign securities through ADRs, 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.

 

Investment in Investment Vehicles Risk – Investing in other investment vehicles, including 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.

 

Leverage Risk – The Fund’s use of leverage, through borrowings or instruments such as derivatives, may cause the Fund to be more volatile than if it had not been leveraged.

 

Liquidity and Valuation Risk – In certain circumstances, it may be difficult for the Fund to purchase and sell particular investments within a reasonable time at a fair price, or the price at which it has been valued by the Investment Manager for purposes of the Fund’s net asset value, causing the Fund to be less liquid and unable to realize what the Investment Manager believes should be the price of the investment.

 

Management Risk – The Fund is actively managed, which means that investment decisions are made based on investment views. There is no guarantee that the investment views will be successful. Furthermore, active trading that can accompany active management, 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.

 

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.

 

Regulatory and Legal Risk – U.S. and other regulators and governmental agencies may implement additional regulations and legislators may 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). These may impact the investment strategies, performance, costs and operations of the Fund or taxation of shareholders.

 

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.

 

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.

 

Technology Stocks Risk – Stocks of companies involved in the technology sector may be very volatile.

 

Value Stocks Risk – Value stocks are subject to the risk that the intrinsic value of the stock may never be realized by the market or that the price goes down.
Risk Lose Money [Text] rr_RiskLoseMoney

The value of an investment in the Fund will fluctuate and is subject to investment risks, which means investors could lose money.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

PERFORMANCE INFORMATION

Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s Class A share performance from year to year and by showing how the Fund’s average annual returns for the one year and since inception periods have compared to those of a broad measure of market performance. As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of 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 1-800-820-0888.

 

The bar chart does not reflect the impact of the sales charge applicable to Class A shares which, if reflected, would lower the returns shown.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns

The following chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s Class A share performance from year to year and by showing how the Fund’s average annual returns for the one year and since inception periods have compared to those of a broad measure of market performance.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone

1-800-820-0888
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress

www.guggenheiminvestments.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture

As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads

The bar chart does not reflect the impact of the sales charge applicable to Class A shares which, if reflected, would lower the returns shown.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Highest Quarter Return

2Q 2009 31.14%

  

Lowest Quarter Return

3Q 2011 -20.95%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel

Highest Quarterly Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 31.14%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (20.95%)
Performance Table Heading rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, 2012)
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes

reflects no deductions for fees, expenses or taxes
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate

After-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any state or local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock

After-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any state or local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class A only. After-tax returns for Class C will vary.
Small Cap Value | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] 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 1.00%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.89%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.06%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.20%
Fee Waiver (and/or Expense Reimbursement) rr_FeeWaiverOrReimbursementOverAssets (0.84%) [3]
Total Annual Fund Operating Expenses After Fee Waiver (and/or Expense Reimbursement) rr_NetExpensesOverAssets 1.36%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 607
3 Years rr_ExpenseExampleYear03 1,054
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,525
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,826
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 607
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 1,054
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,525
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,826
Annual Return 2009 rr_AnnualReturn2009 61.00%
Annual Return 2010 rr_AnnualReturn2010 21.60%
Annual Return 2011 rr_AnnualReturn2011 (5.60%)
Annual Return 2012 rr_AnnualReturn2012 18.70%
Label rr_AverageAnnualReturnLabel

Class A Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 13.07%
Since Inception rr_AverageAnnualReturnSinceInception 15.41%
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 14, 2008
Small Cap Value | Class C | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] 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 1.00%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.70%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.06%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.76%
Fee Waiver (and/or Expense Reimbursement) rr_FeeWaiverOrReimbursementOverAssets (0.65%) [3]
Total Annual Fund Operating Expenses After Fee Waiver (and/or Expense Reimbursement) rr_NetExpensesOverAssets 2.11%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 314
3 Years rr_ExpenseExampleYear03 795
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,402
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 3,043
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 214
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 795
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,402
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 3,043
Label rr_AverageAnnualReturnLabel

Class C Return before taxes
1 Year rr_AverageAnnualReturnYear01 16.85%
Since Inception rr_AverageAnnualReturnSinceInception 16.13%
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 14, 2008
Small Cap Value | Return After Taxes on Distributions | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Class A Return after taxes on distributions
1 Year rr_AverageAnnualReturnYear01 10.30%
Since Inception rr_AverageAnnualReturnSinceInception 12.97%
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 14, 2008
Small Cap Value | Return After Taxes on Distributions and Sale of Fund Shares | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Class A Return after taxes on distributions and sale of fund shares
1 Year rr_AverageAnnualReturnYear01 9.01%
Since Inception rr_AverageAnnualReturnSinceInception 12.11%
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 14, 2008
Small Cap Value | Russell 2000 Value Index (reflects no deductions for fees, expenses or taxes) | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Russell 2000 Value Index (reflects no deductions for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 18.05%
Since Inception rr_AverageAnnualReturnSinceInception 6.90%
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 14, 2008
Large Cap Concentrated Growth | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading

Large Cap Concentrated Growth Fund
Objective [Heading] rr_ObjectiveHeading

INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Large Cap Concentrated Growth Fund seeks long-term growth of capital.
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 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 $100,000 in the Family of Funds, as defined on page 70 of the Fund’s prospectus. More information about these and other discounts is available from your financial professional and in the “Sales Charges – Class A Shares” section on page 39 of the Fund’s prospectus and the “How to Purchase Shares” section on page 36 of the Fund’s statement of additional information.
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 annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 184% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 184.00%
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Family of Funds, as defined on page 70 of the Fund’s prospectus.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount 100,000
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.

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 costs would be:
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption

Redeemed
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

Not Redeemed
Expense Example Closing [Text Block] rr_ExpenseExampleClosingTextBlock

The above Examples reflect applicable contractual fee waiver/expense reimbursement arrangements for the duration of the arrangements only.
Strategy [Heading] rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund pursues its objective by investing, under normal market conditions, at least 80% of its assets (net assets, plus the amount of any borrowing for investment purposes) in equity securities, which include common stocks, rights, options, warrants, convertible debt securities, and American Depositary Receipts (“ADRs”), of companies that, when purchased, have market capitalizations that are usually within the range of companies in the Russell 1000 Growth Index. The Fund focuses its investments in a core position of 20-30 common stocks of growth companies which have exhibited consistent above average earnings and/or revenue growth. The Fund is non-diversified, which means that it may invest a larger portion of its assets in a limited number of companies than a diversified fund. Security Investors, LLC, also known as Guggenheim Investments (the “Investment Manager”), selects what it believes to be premier growth companies as the core position for the Fund using a combination of a qualitative top-down approach in reviewing growth trends that is based upon several fixed income factors, such as bond spreads and interest rates, along with a quantitative fundamental bottom-up approach. Portfolio holdings will be replaced when one or more of a company’s fundamentals have changed, and, in the opinion of the Investment Manager, it is no longer a premier growth company. Although a universal definition of large market capitalization companies does not exist, for purposes of this fund, the Fund generally defines large market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell 1000 Growth Index, which is an unmanaged index measuring the performance of the large cap growth segment of the U.S. equity universe and which includes companies with higher price-to-book ratios and higher forecasted growth values.

The Fund may invest a portion of its assets in derivatives, including options and futures contracts. These instruments may be used to hedge the Fund’s portfolio, to maintain exposure to the equity markets or to increase returns. The Fund also may invest in ADRs.

The Fund may actively trade its investments without regard to the length of time they have been owned by the Fund, which results in higher portfolio turnover.

The Fund may, from time to time, invest a portion of its assets in technology stocks.

The Fund also may invest in a variety of investment vehicles, including those that seek to track the composition and performance of a specific index, such as exchange traded funds (“ETFs”) and other mutual funds. The Fund may use these index-based investments as a way of managing its cash position, to gain exposure to the equity markets or a particular sector of the equity market, while maintaining liquidity.

The Fund typically sells a stock if its growth prospects diminish or if better opportunities become available.

Under adverse or unstable market conditions, the Fund could invest some or all of its assets in cash, fixed-income securities, government bonds, money market securities, or repurchase agreements. Although the Fund would do this only in seeking to avoid losses, the Fund may be unable to pursue its investment objective during that time, and it could reduce the benefit from any upswing in the market.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration

The Fund pursues its objective by investing, under normal market conditions, at least 80% of its assets (net assets, plus the amount of any borrowing for investment purposes) in equity securities, which include common stocks, rights, options, warrants, convertible debt securities, and American Depositary Receipts (“ADRs”), of companies that, when purchased, have market capitalizations that are usually within the range of companies in the Russell 1000 Growth Index.
Risk [Heading] rr_RiskHeading

PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. 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.

Derivatives Risk – Derivatives may pose risks in addition to those associated with investing directly in securities or other investments, including possible illiquidity of the derivative, limited ability to enter into or unwind a position, imperfect correlations with underlying investments or the Fund’s other portfolio holdings, leverage risk, lack of availability and the risk that the counterparty may default on its obligations. If the Investment Manager is incorrect about its expectations of market conditions, the use of derivatives could result in a loss, which in some cases may be unlimited.

Equity Securities Risk – Equity securities include common stocks and other equity securities (and securities convertible into stocks), and the prices of equity securities fluctuate in value more than other investments. They reflect changes in the issuing company’s financial condition and changes in the overall market. Common stocks generally represent the riskiest investment in a company. The Fund may lose a substantial part, or even all, of its investment in a company’s stock. Growth stocks may be more volatile than value stocks.

 

Foreign Securities Risk – Foreign securities, including investments in foreign securities through ADRs, 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.

Growth Stocks Risk – Growth stocks typically invest a high portion of their earnings back into their business and may lack the dividend yield that could cushion their decline in a market downturn. Growth stocks may be more volatile than other stocks because they are more sensitive to investor perceptions regarding the growth potential of the issuing company.

Investment in Investment Vehicles Risk – Investing in other investment vehicles, including 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.

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.

Leverage Risk – The Fund’s use of leverage, through borrowings or instruments such as derivatives, may cause the Fund to be more volatile than if it had not been leveraged.

Liquidity and Valuation Risk – In certain circumstances, it may be difficult for the Fund to purchase and sell particular investments within a reasonable time at a fair price, or the price at which it has been valued by the Investment Manager for purposes of the Fund’s net asset value, causing the Fund to be less liquid and unable to realize what the Investment Manager believes should be the price of the investment.

Management Risk – The Fund is actively managed, which means that investment decisions are made based on investment views. There is no guarantee that the investment views will be successful. Furthermore, active trading that can accompany active management, 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.

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.

Non-Diversification Risk – The Fund is considered non-diversified because it invests a large portion of its assets in a small number of issuers. As a result, the Fund is more susceptible to risks associated with those issuers than a more diversified portfolio, and its performance may be more volatile.

Regulatory and Legal Risk – U.S. and other regulators and governmental agencies may implement additional regulations and legislators may 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). These may impact the investment strategies, performance, costs and operations of the Fund or taxation of shareholders.

Technology Stocks Risk - Stocks of companies involved in the technology sector may be very volatile.
Risk Lose Money [Text] rr_RiskLoseMoney

The value of an investment in the Fund will fluctuate and is subject to investment risks, which means investors could lose money.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

PERFORMANCE INFORMATION

Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s Class A share performance from year to year and by showing how the Fund’s average annual returns for one, five, and ten years have compared to those of a broad measure of market performance. As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of 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 1-800-820-0888.

 

The bar chart does not reflect the impact of the sales charge applicable to Class A shares which, if reflected, would lower the returns shown.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns

The following chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s Class A share performance from year to year and by showing how the Fund’s average annual returns for one, five, and ten years have compared to those of a broad measure of market performance.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone

1-800-820-0888
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress

www.guggenheiminvestments.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture

As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads

The bar chart does not reflect the impact of the sales charge applicable to Class A shares which, if reflected, would lower the returns shown.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Highest Quarter Return

3Q 2009 16.22%

  

Lowest Quarter Return

4Q 2008 -19.83%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel

Highest Quarterly Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 16.22%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (19.83%)
Performance Table Heading rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, 2012)

Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes

reflects no deductions for fees, expenses or taxes
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate

After-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any state or local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock

After-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any state or local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class A only. After-tax returns for Class B and C will vary.
Large Cap Concentrated Growth | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] 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 0.75%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.86%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.86%
Fee Waiver (and/or Expense Reimbursement) rr_FeeWaiverOrReimbursementOverAssets (0.51%) [4]
Total Annual Fund Operating Expenses After Fee Waiver (and/or Expense Reimbursement) rr_NetExpensesOverAssets 1.35%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 606
3 Years rr_ExpenseExampleYear03 985
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,388
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,512
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 606
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 985
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,388
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,512
Annual Return 2003 rr_AnnualReturn2003 16.90%
Annual Return 2004 rr_AnnualReturn2004 10.90%
Annual Return 2005 rr_AnnualReturn2005 11.70%
Annual Return 2006 rr_AnnualReturn2006 6.50%
Annual Return 2007 rr_AnnualReturn2007 (6.40%)
Annual Return 2008 rr_AnnualReturn2008 (37.40%)
Annual Return 2009 rr_AnnualReturn2009 33.40%
Annual Return 2010 rr_AnnualReturn2010 16.20%
Annual Return 2011 rr_AnnualReturn2011 (4.40%)
Annual Return 2012 rr_AnnualReturn2012 10.70%
Label rr_AverageAnnualReturnLabel

Class A Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 5.36%
5 Years rr_AverageAnnualReturnYear05 (0.67%)
10 Years rr_AverageAnnualReturnYear10 3.39%
Large Cap Concentrated Growth | Class B | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none [1]
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOfferingPrice 5.00%
Management Fees rr_ManagementFeesOverAssets 0.75%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 1.39%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 3.14%
Fee Waiver (and/or Expense Reimbursement) rr_FeeWaiverOrReimbursementOverAssets (1.04%) [4]
Total Annual Fund Operating Expenses After Fee Waiver (and/or Expense Reimbursement) rr_NetExpensesOverAssets 2.10%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 713
3 Years rr_ExpenseExampleYear03 1,171
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,754
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 3,077
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 213
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 871
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,554
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 3,077
Label rr_AverageAnnualReturnLabel

Class B Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 4.85%
5 Years rr_AverageAnnualReturnYear05 (0.65%)
10 Years rr_AverageAnnualReturnYear10 3.38%
Large Cap Concentrated Growth | Class C | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] 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 0.75%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.82%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.57%
Fee Waiver (and/or Expense Reimbursement) rr_FeeWaiverOrReimbursementOverAssets (0.47%) [4]
Total Annual Fund Operating Expenses After Fee Waiver (and/or Expense Reimbursement) rr_NetExpensesOverAssets 2.10%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 313
3 Years rr_ExpenseExampleYear03 755
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,323
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,870
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 213
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 755
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,323
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,870
Label rr_AverageAnnualReturnLabel

Class C Return before taxes
1 Year rr_AverageAnnualReturnYear01 8.81%
5 Years rr_AverageAnnualReturnYear05 (0.24%)
10 Years rr_AverageAnnualReturnYear10 3.22%
Large Cap Concentrated Growth | Return After Taxes on Distributions | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Class A Return after taxes on distributions
1 Year rr_AverageAnnualReturnYear01 5.36%
5 Years rr_AverageAnnualReturnYear05 (0.70%)
10 Years rr_AverageAnnualReturnYear10 3.24%
Large Cap Concentrated Growth | Return After Taxes on Distributions and Sale of Fund Shares | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Class A Return after taxes on distributions and sale of fund shares
1 Year rr_AverageAnnualReturnYear01 3.48%
5 Years rr_AverageAnnualReturnYear05 (0.59%)
10 Years rr_AverageAnnualReturnYear10 2.93%
Large Cap Concentrated Growth | Russell 1000 Growth Index (reflects no deductions for fees, expenses or taxes) | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Russell 1000 Growth Index (reflects no deductions for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 15.26%
5 Years rr_AverageAnnualReturnYear05 3.12%
10 Years rr_AverageAnnualReturnYear10 7.52%
MSCI EAFE Equal Weight | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading

MSCI EAFE Equal Weight Fund
Objective [Heading] rr_ObjectiveHeading

INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The MSCI EAFE Equal Weight Fund (the “Fund”) seeks performance that corresponds, before fees and expenses, to the price and yield performance of the MSCI EAFE Equal Weighted Index (the “Underlying Index”).
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 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 $100,000 in the Family of Funds, as defined on page 35 of the Fund’s prospectus. More information about these and other discounts is available from your financial professional and in the “Sales Charges – Class A Shares” section on page 14 of the Fund’s prospectus and the “How to Purchase Shares” section on page 34 of the Fund’s Statement of Additional Information.
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 annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 41% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 41.00%
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Family of Funds, as defined on page 35 of the Fund’s prospectus.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount 100,000
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. 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 costs would be:
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption

Redeemed
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

Not Redeemed
Expense Example Closing [Text Block] rr_ExpenseExampleClosingTextBlock

The above Examples reflect applicable contractual fee waiver/expense reimbursement arrangements for the duration of the arrangements only.
Strategy [Heading] rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund uses a passive management strategy, known as “representative sampling,” to track the performance of the Underlying Index. “Representative sampling” refers to an indexing strategy that generally involves investing in a representative sample of securities or financial instruments, primarily consisting of American Depositary Receipts (“ADRs”) and Global Depositary Receipts (“GDRs”), that have an investment profile similar to the Underlying Index and some, but not all, of the component securities of the Underlying Index. This technique involves the use of risk management and quantitative stock picking strategies. Under normal circumstances, the Fund will invest at least 80% of its assets (net assets, plus the amount of any borrowing for investment purposes) in the equity securities included in the Underlying Index. The Fund may hold up to 20% of its assets in securities not included in or representative of the Underlying Index. The Investment Manager expects that, over time, if the Fund has sufficient assets, the correlation between the Fund’s performance, before fees and expenses, and that of the Underlying Index will be 95% or better. A figure of 100% would indicate perfect correlation. However, fees and expenses incurred by the Fund as well as the size and frequency of cash flows into and out of the Fund as well as other factors will cause differences in performance, usually making it harder for the Fund to correlate to the Underlying Index. The Fund may invest in a variety of investment vehicles, such as exchange traded funds (“ETFs”) and other mutual funds. The Fund may use these investments as a way of managing its cash position to gain exposure to the equity markets or a particular sector of the equity market, while maintaining liquidity. The Fund may also invest in futures contracts in order to maintain exposure to the securities and currency markets at times when it is not able to purchase the corresponding securities and currencies or it believes that it is more appropriate to use futures.

The MSCI EAFE Equal Weighted Index is an unmanaged equal-weighted version of the MSCI EAFE Index, which means that each security included in the index has the same weight on each rebalancing date and then fluctuates based on the performance of the security until weights are reset equally on the next rebalancing date. The MSCI EAFE Equal Weighted Index is generally rebalanced quarterly. The Fund’s investments will be weighted and rebalanced in accordance with the MSCI EAFE Equal Weighted Index. The MSCI EAFE Index (Europe, Australasia, Far East) is an index that is designed to measure the equity market performance of developed markets, excluding the U.S. and Canada. As of December 31, 2012, the MSCI EAFE Index consisted of separate sub-indices representing the following 22 developed market countries: Australia, Austria, Belgium, Denmark, Finland, France, Germany, Greece, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, and the United Kingdom, with capitalizations ranging from $1 to $209 billion. Both Indices are denominated in U.S. Dollars.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration

Under normal circumstances, the Fund will invest at least 80% of its assets (net assets, plus the amount of any borrowing for investment purposes) in the equity securities included in the Underlying Index. The Fund may hold up to 20% of its assets in securities not included in or representative of the Underlying Index. The Investment Manager expects that, over time, if the Fund has sufficient assets, the correlation between the Fund’s performance, before fees and expenses, and that of the Underlying Index will be 95% or better. A figure of 100% would indicate perfect correlation. However, fees and expenses incurred by the Fund as well as the size and frequency of cash flows into and out of the Fund as well as other factors will cause differences in performance, usually making it harder for the Fund to correlate to the Underlying Index.
Risk [Heading] rr_RiskHeading

PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. 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.

Correlation and Tracking Error Risk – A number of factors may affect the Fund’s ability to track its benchmark index or achieve a high degree of correlation with its benchmark either on a single trading day or for a longer time period. Factors such as Fund expenses, imperfect correlation between the Fund’s investments and those of its Underlying Index, rounding of share prices, regulatory policies, high portfolio turnover rate and the use of leverage all contribute to tracking error or correlation risk. 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.

Capitalization Securities Risk – The Fund’s Underlying Index may be composed primarily of, or have significant exposure to, securities in a particular capitalization range, e.g., large-, mid- or small-cap securities. As a result, the Fund may be subject to the risk that the pre-dominate capitalization range represented in the Underlying Index may underperform other segments of the equity market or the equity market as a whole.

Currency Risk – Indirect and direct exposure to foreign currencies subjects the Fund to the risk that those currencies will decline in value relative to the U.S. Dollar, which would cause a decline in the 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.

Depositary Receipt Risk – The Fund may hold the securities of non-U.S. companies in the form of ADRs and GDRs. The underlying securities of the ADRs and GDRs 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 and GDRs 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 – Derivatives may pose risks in addition to those associated with investing directly in securities or other investments, including possible illiquidity of the derivative, limited ability to enter into or unwind a position, imperfect correlations with underlying investments or the Fund’s other portfolio holdings, leverage risk, lack of availability and the risk that the counterparty may default on its obligations. If the Investment Manager is incorrect about its expectations of market conditions, the use of derivatives could result in a loss, which in some cases may be unlimited.

Equity Securities Risk – Equity securities include common stocks and other equity securities (and securities convertible into stocks), and the prices of equity securities fluctuate in value more than other investments. They reflect changes in the issuing company’s financial condition and changes in the overall market. Common stocks generally represent the riskiest investment in a company. The Fund may lose a substantial part, or even all, of its investment in a company’s stock. Growth stocks may be more volatile than value stocks.

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.

Geographic Focus Risk – To the extent that the Fund’s investments are focused in a particular country or region, the Fund will be susceptible to loss due to adverse market, political, regulatory, and geographic events affecting that country or region. The Fund’s exposure generally will be focused on a particular country or region to the same extent as the Underlying Index. The Fund has focused investment exposure to the regions listed below.

Asia – While certain Asian economies are exemplars of growth and development others have been and continue to be subject, to some extent, to over-extension of credit, currency devaluations and restrictions, high unemployment, high inflation, decreased exports and economic recessions.

Europe – The European economy is diverse and includes both large, competitive economies and small, struggling economies. The European economy is vulnerable to decreasing imports or exports, changes in governmental regulations on trade, changes in the exchange rate of the euro and recessions in EU economies. The European financial markets have recently experienced volatility due to concerns about rising government debt levels of several European countries and increased unemployment levels. Economic uncertainty may have an adverse effect on the value of the Fund’s investments.

Investment in Investment Vehicles Risk – Investing in other investment vehicles, including 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.

Leverage Risk – The Fund’s use of leverage, through borrowings or instruments such as derivatives, may cause the Fund to be more volatile than if it had not been leveraged.

Liquidity and Valuation Risk – In certain circumstances, it may be difficult for the Fund to purchase and sell particular investments within a reasonable time at a fair price, or the price at which it has been valued by the Investment Manager for purposes of the Fund’s net asset value, causing the Fund to be less liquid and unable to realize what the Investment Manager believes should be the price of the investment.

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.

Passive Investment/Index Strategy Risk – The Fund has an investment strategy that is designed to track the performance of its Underlying Index and is not actively managed. The Investment Manager does not base its securities selection based upon its view of the relative benefits and detriments of issuers or securities, and the Investment Manager does not attempt to purchase or sell securities due to declining market prices or changes in an issuer of a security held by the Fund or otherwise take defensive positions in declining markets. The Fund will purchase, hold or sell securities when an actively managed fund would not do so. Therefore, the Fund may be subject to greater losses in a declining market than a fund that is actively managed.

 
Risk Lose Money [Text] rr_RiskLoseMoney

The value of an investment in the Fund will fluctuate and is subject to investment risks, which means investors could lose money.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s Class A share performance from year to year and by showing how the Fund’s average annual returns for one, five, and ten years have compared to those of broad measures of market performance. Performance prior to April 29, 2011 was achieved when the Fund had a different investment objective and used different strategies. As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of 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 1-800-820-0888.

 

The bar chart does not reflect the impact of the sales charge applicable to Class A shares which, if reflected, would lower the returns shown.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns

The following chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s Class A share performance from year to year and by showing how the Fund’s average annual returns for one, five, and ten years have compared to those of broad measures of market performance.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone

1-800-820-0888
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress

www.guggenheiminvestments.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture

As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarter Return   Lowest Quarter Return
2Q 2003 20.77%   3Q 2011 -18.28%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel

Highest Quarterly Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2003
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 20.77%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (18.28%)
Performance Table Heading rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, 2012)

Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes

reflects no deductions for fees, expenses or taxes
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate

After-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any state or local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock

After-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any state or local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class A only. After-tax returns for Class B and C will vary.
MSCI EAFE Equal Weight | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] 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 0.70%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Tax Expenses rr_Component1OtherExpensesOverAssets 0.02%
Remaining Other Expenses rr_Component2OtherExpensesOverAssets 1.08%
Other Expenses rr_OtherExpensesOverAssets 1.10%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.05%
Fee Waiver (and/or Expense Reimbursement) rr_FeeWaiverOrReimbursementOverAssets (0.42%) [5]
Total Annual Fund Operating Expenses After Fee Waiver (and/or Expense Reimbursement) rr_NetExpensesOverAssets 1.63%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 633
3 Years rr_ExpenseExampleYear03 1,049
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,489
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,709
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 633
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 1,049
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,489
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,709
Annual Return 2003 rr_AnnualReturn2003 41.60%
Annual Return 2004 rr_AnnualReturn2004 18.00%
Annual Return 2005 rr_AnnualReturn2005 13.10%
Annual Return 2006 rr_AnnualReturn2006 16.60%
Annual Return 2007 rr_AnnualReturn2007 11.20%
Annual Return 2008 rr_AnnualReturn2008 (38.20%)
Annual Return 2009 rr_AnnualReturn2009 19.80%
Annual Return 2010 rr_AnnualReturn2010 14.90%
Annual Return 2011 rr_AnnualReturn2011 (16.00%)
Annual Return 2012 rr_AnnualReturn2012 15.90%
Label rr_AverageAnnualReturnLabel

Class A Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 10.32%
5 Years rr_AverageAnnualReturnYear05 (4.86%)
10 Years rr_AverageAnnualReturnYear10 6.68%
MSCI EAFE Equal Weight | Class B | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none [1]
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOfferingPrice 5.00%
Management Fees rr_ManagementFeesOverAssets 0.70%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Tax Expenses rr_Component1OtherExpensesOverAssets 0.02%
Remaining Other Expenses rr_Component2OtherExpensesOverAssets 1.62%
Other Expenses rr_OtherExpensesOverAssets 1.64%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 3.34%
Fee Waiver (and/or Expense Reimbursement) rr_FeeWaiverOrReimbursementOverAssets (0.96%) [5]
Total Annual Fund Operating Expenses After Fee Waiver (and/or Expense Reimbursement) rr_NetExpensesOverAssets 2.38%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 741
3 Years rr_ExpenseExampleYear03 1,238
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,858
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 3,395
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 241
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 938
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,658
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 3,395
Label rr_AverageAnnualReturnLabel

Class B Return before taxes
1 Year rr_AverageAnnualReturnYear01 11.18%
5 Years rr_AverageAnnualReturnYear05 (3.86%)
10 Years rr_AverageAnnualReturnYear10 7.28%
MSCI EAFE Equal Weight | Class C | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] 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 0.70%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Tax Expenses rr_Component1OtherExpensesOverAssets 0.02%
Remaining Other Expenses rr_Component2OtherExpensesOverAssets 1.16%
Other Expenses rr_OtherExpensesOverAssets 1.18%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.88%
Fee Waiver (and/or Expense Reimbursement) rr_FeeWaiverOrReimbursementOverAssets (0.50%) [5]
Total Annual Fund Operating Expenses After Fee Waiver (and/or Expense Reimbursement) rr_NetExpensesOverAssets 2.38%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 341
3 Years rr_ExpenseExampleYear03 845
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,474
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 3,169
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 241
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 845
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,474
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 3,169
Label rr_AverageAnnualReturnLabel

Class C Return before taxes
1 Year rr_AverageAnnualReturnYear01 14.04%
5 Years rr_AverageAnnualReturnYear05 (4.45%)
10 Years rr_AverageAnnualReturnYear10 6.51%
MSCI EAFE Equal Weight | Return After Taxes on Distributions | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Class A Return after taxes on distributions
1 Year rr_AverageAnnualReturnYear01 9.57%
5 Years rr_AverageAnnualReturnYear05 (5.09%)
10 Years rr_AverageAnnualReturnYear10 5.74%
MSCI EAFE Equal Weight | Return After Taxes on Distributions and Sale of Fund Shares | Class A | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

Class A Return after taxes on distributions and sale of fund shares
1 Year rr_AverageAnnualReturnYear01 6.69%
5 Years rr_AverageAnnualReturnYear05 (4.20%)
10 Years rr_AverageAnnualReturnYear10 5.85%
MSCI EAFE Equal Weight | MSCI EAFE Equal Weighted Index (reflects no deductions for fees, expenses or taxes) | Security Equity Fund Class A, B And C
  
[RiskReturnAbstract] rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel

MSCI EAFE Equal Weighted Index (reflects no deductions for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 16.91% [6]
5 Years rr_AverageAnnualReturnYear05 none [6]
10 Years rr_AverageAnnualReturnYear10 none [6]
[1] Closed to new subscriptions
[2] Mid Cap Value Fund pays an advisory fee at an annual rate of 1.00% of the average daily net assets of $200 million or less, plus 0.75% of the average daily net assets of the Fund in excess of $200 million.
[3] The Investment Manager has contractually agreed through February 1, 2014 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 - 1.30% and Class C - 2.05%. 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 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).
[4] The Investment Manager has contractually agreed through February 1, 2014 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 - 1.35%, Class B - 2.10% and Class C - 2.10%. 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 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).
[5] The Investment Manager has contractually agreed through February 1, 2014 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 - 1.61%, Class B - 2.36% and Class C - 2.36%. 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 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).
[6] The MSCI EAFE Equal Weighted Index inception date is January 22, 2008 and therefore index performance for certain time periods is not available.