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Label Element Value
Prospectus: rr_ProspectusTable  
Document Type dei_DocumentType 485BPOS
Document Period End Date dei_DocumentPeriodEndDate Dec. 31, 2015
Entity Registrant Name dei_EntityRegistrantName Claymore Exchange-Traded Fund Trust
Central Index Key dei_EntityCentralIndexKey 0001364089
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate May 20, 2016
Document Effective Date dei_DocumentEffectiveDate May 20, 2016
Prospectus Date rr_ProspectusDate May 20, 2016
Claymore Exchange-Traded Fund Trust 1 | Guggenheim BRIC ETF | Guggenheim BRIC ETF  
Prospectus: rr_ProspectusTable  
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2018
Claymore Exchange-Traded Fund Trust 1 | Guggenheim BRIC ETF | Guggenheim Defensive Equity ETF  
Prospectus: rr_ProspectusTable  
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2018
Claymore Exchange-Traded Fund Trust 1 | Guggenheim BRIC ETF | Guggenheim Insider Sentiment ETF  
Prospectus: rr_ProspectusTable  
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2018
Claymore Exchange-Traded Fund Trust 1 | Guggenheim BRIC ETF | Guggenheim Mid-Cap Core ETF  
Prospectus: rr_ProspectusTable  
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2018
Claymore Exchange-Traded Fund Trust 1 | Guggenheim BRIC ETF | Guggenheim Multi-Asset Income ETF  
Prospectus: rr_ProspectusTable  
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2018
Claymore Exchange-Traded Fund Trust 1 | Guggenheim BRIC ETF | Guggenheim Spin-Off ETF  
Prospectus: rr_ProspectusTable  
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2018
Claymore Exchange-Traded Fund Trust 1 | Guggenheim Spin-Off ETF  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading Guggenheim S&P Spin-Off ETF (CSD)*
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Guggenheim S&P Spin-Off ETF (the "Fund") seeks investment results that correspond generally to the performance, before the Fund’s fees and expenses, of an equity index called the S&P U.S. Spin-Off Index (the “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 (“Shares”). Investors purchasing Shares in the secondary market may be subject to costs (including customary brokerage commissions) charged by their broker.
*Prior to May 20, 2016, the Fund's name was Guggenheim Spin-Off ETF.
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 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 56% of the average value of its portfolio
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 56.00%
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The Example does not take into account brokerage commissions that you may pay when purchasing or selling Shares.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund, using a “passive” or “indexing” investment approach, seeks to replicate, before the Fund’s fees and expenses, the performance of the Index. The Index is designed to measure the performance of U.S. companies that have been spun off from larger corporations within the past four years. The Index is comprised of equity securities of U.S. companies added to the S&P United States BMI, a country sub-index of the S&P Global BMI, that have been spun off and have a float-adjusted market capitalization of at least $1 billion. S&P Dow Jones Indices LLC (“S&P” or the “Index Provider”) defines a spin-off company as any company resulting from one of the following events:

•
Spin-off. The spin-off distribution of shares of a subsidiary company by its parent company to parent company shareholders.

•
Carve-out. The sale by a parent company of a percentage of the equity of a subsidiary to public shareholders.

•
Split-off. The distribution of shares of a subsidiary company by its parent company to parent company shareholders that elect to redeem their shares in the parent company in return for shares of the subsidiary company.

As of April 29, 2016, the Index was comprised of approximately 62 securities. The Fund will invest at least 90% of its total assets in securities that comprise the Index. The Fund has adopted a policy that requires the Fund to provide shareholders with at least 60 days notice prior to any material change in this policy or to the Index. The Board may change the Fund’s investment strategy and other policies without shareholder approval, except as otherwise indicated.
 
The Fund generally will invest in all of the securities comprising the Index in proportion to their weightings in the Index. However, under various circumstances, it may not be possible or practicable to purchase all of the securities in the Index in those weightings. In those circumstances, the Fund may purchase a sample of the securities in the Index in proportions expected by the Investment Adviser to replicate generally the performance of the Index as a whole. There may also be instances, such as: (i) regulatory requirements which may affect the Fund’s ability to hold a security included in the Index, or (ii) liquidity concerns that may affect the Fund’s ability to purchase or sell a security included in the Index, in which the Investment Adviser may choose to overweight another security in the Index or purchase (or sell) securities not in the Index which the Investment Adviser believes are appropriate to substitute for one or more Index components in seeking to accurately track the Index. In addition, from time to time securities are added to or removed from the Index. The Fund may sell securities that are represented in the Index or purchase securities that are not yet represented in the Index in anticipation of their removal from or addition to the Index pursuant to scheduled reconstitutions and rebalancings of the Index. The Fund will concentrate its investments (i.e., hold 25% or more of its assets) in a particular industry or group of industries to the extent the Index is so concentrated. As of April 29, 2016, the health care, information technology and financial services sectors represented a substantial portion of the Index.

Prior to May 20, 2016, the Fund sought to replicate, before the Fund's fees and expenses, the performance of the Beacon Spin-Off Index.
Risk [Heading] rr_RiskHeading Principal Investment Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
Investors should consider the following risk factors and special considerations associated with investing in the Fund, which may cause you to lose money. The Fund’s Shares will change in value, and you could lose money by investing in the Fund. The Fund may not achieve its investment objective. An investment in the Fund has not been guaranteed, sponsored, recommended, or approved by the United States, or any agency, instrumentality or officer of the United States, has not been insured by the Federal Deposit Insurance Corporation (FDIC) and is not guaranteed by and is not otherwise an obligation of any bank or insured depository institution.

Investment Risk. An investment in the Fund is subject to investment risk, including the possible loss of the entire principal amount that you invest.

Equity Risk. If the prices of the equity securities held by the Fund fall, the value of your investment in the Fund will be adversely affected. The value of the equity and equity-related securities held by the Fund may fall (sometimes rapidly or unpredictably) due to general market and economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate, or factors relating to specific companies in which the Fund invests. For example, an adverse event, such as an unfavorable earnings report, may depress the value of equity securities of an issuer held by the Fund; the price of common stock of an issuer may be particularly sensitive to general movements in the stock market; or a drop in the stock market may depress the price of most or all of the common stocks and other equity securities held by the Fund. In addition, common stock of an issuer in the Fund’s portfolio may decline in price if the issuer fails to make anticipated dividend payments because the issuer of the security experiences a decline in its financial condition. Common stock generally represents the riskiest investment in an issuer and is subordinated to preferred stocks, bonds and other debt instruments in a company’s capital structure, in terms of priority to corporate income, and therefore will be subject to greater dividend risk than preferred stocks or debt instruments of such issuers. In addition, while broad market measures of common stocks may generate higher average returns than other investments, common stocks generally experience more volatility in those returns. These risks are generally magnified in the case of investments in equity securities of issuers offered through initial public offerings.

Health Care Sector Risk. Companies in the health care sector are subject to extensive government regulation and their profitability can be significantly affected by restrictions on government reimbursement for medical expenses, rising costs of medical products and services, pricing pressure (including price discounting), limited product lines and an increased emphasis on the delivery of health care through outpatient services. Companies in the health care sector are heavily dependent on obtaining and defending patents, which may be time consuming and costly, and the expiration of patents may also adversely affect the profitability of the companies. Health care companies are also subject to extensive litigation based on product liability and similar claims. In addition, their products can become obsolete due to industry innovation, changes in technologies or other market developments. Many new products in the health care sector require significant research and development and may be subject to regulatory approvals, all of which may be time consuming and costly with no guarantee that any product will come to market.

Information Technology Sector Risk. Competitive pressures may have a significant effect on the financial condition of companies in the information technology sector. Also, many of the products and services offered by information technology companies are subject to the risks of short product cycles and rapid obsolescence. Companies in the information technology sector also may be subject to competition from new market entrants. Such companies also may be subject to risks relating to research and development costs and the availability and price of components. As product cycles shorten and manufacturing capacity increases, these companies could become increasingly subject to aggressive pricing, which hampers profitability. Other risks include those related to regulatory changes, such as the possible adverse effects on profits of recent increased competition among telecommunications companies and the uncertainties resulting from such companies’ diversification into new domestic and international businesses, as well as agreements by any such companies linking future rate increases to inflation or other factors not directly related to the actual operating profits of the enterprise.

Financial Services Sector Risk. The financial services sector is subject to extensive government regulation, can be subject to relatively rapid change due to increasingly blurred distinctions between service segments, and can be significantly affected by availability and cost of capital funds, changes in interest rates, the rate of corporate and consumer debt defaults, and increased competition. Companies in the financial services sector may be subject to extensive government regulation that affects the scope of their activities, the prices they can charge and the amount of capital they must maintain. The profitability and viability of companies in the financial services sector may be adversely affected by increases in interest rates, by loan losses, which usually increase in economic downturns, and by credit rating downgrades. In addition, the financial services sector is undergoing numerous changes, including continuing consolidations, development of new products and structures and changes to its regulatory framework. Furthermore, some companies in the financial services sector perceived as benefiting from government intervention in the past may be subject to future government-imposed restrictions on their businesses or face increased government involvement in their operations. Increased government involvement in the financial services sector, including measures such as taking ownership positions in financial institutions, could result in a dilution of the Fund’s investments in financial institutions. Adverse developments in the credit markets may cause companies operating in the financial services sector to incur large losses, experience declines in the value of their assets and even cease operations.

Large-Capitalization Securities Risk. The Fund may be subject to the risk that large-capitalization securities may underperform other segments of the equity market or the equity market as a whole. Although the securities of larger companies may be less volatile than those of companies with smaller market capitalizations, 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.

Small and Medium-Sized Company Risk. Investing in securities of small and medium-sized companies involves greater risk than is customarily associated with investing in larger, more established companies. Securities of these companies present additional risks because their earnings are less predictable and they are more likely than larger companies to have narrower product lines, markets or financial resources. These companies’ securities may be more volatile and less liquid than those of larger, more established companies. These securities may have returns that vary, sometimes significantly, from the overall stock market.

Non-Correlation Risk. The Fund’s return may not match the return of the Index for a number of reasons. For example, the Fund incurs a number of operating expenses not applicable to the Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Index. Since the Index constituents may vary on a monthly basis, the Fund’s costs associated with rebalancing may be greater than those incurred by other exchange-traded funds ("ETFs") that track indices whose composition changes less frequently. In addition, the performance of the Fund and the Index may vary due to asset valuation differences and differences between the Fund's portfolio and the Index resulting from legal restrictions, cash flows or operational inefficiencies.

Due to legal and regulatory rules and limitations, the Fund may not be able to invest in all securities included in the Index.  For tax efficiency purposes, the Fund may sell certain securities to realize losses, causing it to deviate from the Index.
 
The Fund may not be fully invested at times, either as a result of cash flows into the Fund or reserves of cash held by the Fund to meet redemptions and expenses. If the Fund utilizes a sampling approach or futures or other derivative positions, or otherwise holds investments other than those which comprise the Index, its return may not correlate as well with the return of the Index, as would be the case if it purchased all of the securities in the Index with the same weightings as the Index.

Market Price Risk. Shares are listed for trading on NYSE Arca, Inc. (“NYSE Arca”) and are bought and sold in the secondary market at market prices. The market prices of Shares may fluctuate continuously during trading hours, in some cases materially, in response to changes in the net asset value (“NAV”) and supply and demand for Shares, among other factors. Although it is expected that the market price of Shares typically will remain closely correlated to the NAV, the market price will generally differ from the NAV because of timing reasons, supply and demand imbalances and other factors. As a result, the trading prices of Shares may deviate significantly from NAV during certain periods, especially those of market volatility. The Investment Adviser cannot predict whether Shares will trade above (premium), below (discount) or at their NAV. Thus, an investor may pay more than NAV when buying Shares in the secondary market and receive less than NAV when selling Shares in the secondary market. Given the fact that Shares can be created and redeemed in Creation Units, the Investment Adviser believes that large discounts or premiums to the NAV of Shares should not be sustained in the long-term. However, the Fund may have a limited number of financial institutions that may act as “Authorized Participants” or market makers. Only Authorized Participants who have entered into agreements with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund (as described under “How to Buy and Sell Shares”). If some or all of these Authorized Participants exit the business or are unable to process creation and/or redemption orders, and no other Authorized Participant is able to create and redeem in either of these cases, Shares may trade at a discount to NAV like closed-end fund shares (and may even face delisting). Similar effects may result if market makers exit the business or unable to continue making markets in the Shares. Further, while the creation/redemption feature is designed to make it likely that Shares normally will trade at prices closely correlated to the Fund's next calculated NAV, disruptions to creations and redemptions, including disruptions at market makers, Authorized Participants or market participants, or during periods of significant market volatility, among other factors, may result in market prices that differ significantly from NAV. Although market makers will generally take advantage of differences between the NAV and the market price of Shares through arbitrage opportunities, there is no guarantee that they will do so. In addition, secondary markets may be subject to irregular trading activity, wide bid-ask spreads and extended trade settlement periods, which could cause a material decline in the NAV and/or market prices for Shares. The bid-ask spread is generally larger during periods of lower than regular trading volume in Shares or reduced market liquidity and can increase significantly during periods of market disruption or steep declines, which may be the time an investor most wants to sell its Shares. The Fund's bid-ask spread may also be impacted by the liquidity of the underlying securities held by the Fund, particularly for newly launched or smaller funds or in instances of significant volatility of the underlying securities. The Fund’s investment results are measured based upon the daily NAV of the Shares. Investors purchasing and selling Shares in the secondary market may not experience investment results consistent with those experienced by Authorized Participants creating and redeeming directly with the Fund.

Concentration Risk. If the Index concentrates in an industry or group of industries, the Fund’s investments will be concentrated accordingly. In such event, the value of the Fund’s Shares may rise and fall more than the value of shares of a fund that invests in securities of companies in a broader range of industries.
 
Passive Management Risk. Unlike many investment companies, the Fund is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble or defaulted, or whose credit rating was downgraded, unless that security is removed from the Index. In addition, the Fund will not otherwise take defensive positions in declining markets unless such positions are reflected in the Index.

Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than the market as a whole and can perform differently from the value of the market as a whole. The value of securities of smaller issuers can be more volatile than that of larger issuers.
 
Non-Diversified Fund Risk. The Fund is considered non-diversified and can invest a greater portion of assets in securities of individual issuers than a diversified fund. As a result, the Fund's performance may depend on the performance of a small number of issuers and the Fund may be more susceptible to risks associated with and adverse developments affecting a single issuer, including changes in the market value of the issuer's securities and unfavorable market and economic developments. These events could cause a greater impact on the Fund and fluctuations in Share price than would occur in a diversified fund.

Tax Risks. In order to qualify for the favorable tax treatment generally available to regulated investment companies (“RICs”) and avoid Fund-level taxes, the Fund must satisfy certain income and asset composition requirements, as well as certain distribution requirements. If the Fund fails to satisfy the distribution requirement necessary to qualify for treatment as a RIC for any taxable year, the Fund would be treated as a corporation subject to U.S. federal income tax, thereby subjecting any income earned by the Fund to tax at the corporate level. If the Fund fails to satisfy a separate distribution requirement, it will be subject to a Fund-level excise tax.
Risk Lose Money [Text] rr_RiskLoseMoney Investors should consider the following risk factors and special considerations associated with investing in the Fund, which may cause you to lose money. The Fund’s Shares will change in value, and you could lose money by investing in the Fund.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Non-Diversified Fund Risk. The Fund is considered non-diversified and can invest a greater portion of assets in securities of individual issuers than a diversified fund. As a result, the Fund's performance may depend on the performance of a small number of issuers and the Fund may be more susceptible to risks associated with and adverse developments affecting a single issuer, including changes in the market value of the issuer's securities and unfavorable market and economic developments. These events could cause a greater impact on the Fund and fluctuations in Share price than would occur in a diversified fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund has not been guaranteed, sponsored, recommended, or approved by the United States, or any agency, instrumentality or officer of the United States, has not been insured by the Federal Deposit Insurance Corporation (FDIC) and is not guaranteed by and is not otherwise an obligation of any bank or insured depository institution.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one year, five years and since inception compare with those of the Index and broad measures of market performance. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated performance information for the Fund is available at guggenheiminvestments.com.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one year, five years and since inception compare with those of the Index and broad measures of market performance.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress guggenheiminvestments.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Calendar Year Total Returns as of 12/31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
The Fund commenced operations on December 15, 2006. The Fund’s year-to-date total return was 0.39% as of March 31, 2016.
 
During the periods shown in the above chart, the Fund’s highest and lowest calendar quarter returns were 26.85% and -33.42%, respectively, for the quarters ended September 30, 2009 and December 31, 2008.
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns for the Periods Ended December 31, 2015
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate All after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any state or local tax.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your own actual after-tax returns will depend on your tax situation and may differ from what is shown here. After-tax returns are not relevant to investors who hold Shares in tax-deferred accounts such as individual retirement accounts (IRAs) or employee-sponsored retirement plans.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock
All after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of any state or local tax. Your own actual after-tax returns will depend on your tax situation and may differ from what is shown here. After-tax returns are not relevant to investors who hold Shares in tax-deferred accounts such as individual retirement accounts (IRAs) or employee-sponsored retirement plans.
Claymore Exchange-Traded Fund Trust 1 | Guggenheim Spin-Off ETF | Beacon Spin-Off Index  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes reflects no deduction for fees, expenses or taxes
Label rr_AverageAnnualReturnLabel Beacon Spin-Off Index (reflects no deduction for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 (11.74%)
5 Years rr_AverageAnnualReturnYear05 13.18%
Since Inception rr_AverageAnnualReturnSinceInception 6.84%
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 15, 2006
Claymore Exchange-Traded Fund Trust 1 | Guggenheim Spin-Off ETF | Russell Midcap Index  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes reflects no deduction for fees, expenses or taxes
Label rr_AverageAnnualReturnLabel Russell Midcap Index (reflects no deduction for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 (2.44%)
5 Years rr_AverageAnnualReturnYear05 11.44%
Since Inception rr_AverageAnnualReturnSinceInception 7.03%
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 15, 2006
Claymore Exchange-Traded Fund Trust 1 | Guggenheim Spin-Off ETF | Standard & Poor’s 500 Index  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes reflects no deduction for fees, expenses or taxes
Label rr_AverageAnnualReturnLabel Standard & Poor’s 500® Index (reflects no deduction for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 1.38%
5 Years rr_AverageAnnualReturnYear05 12.57%
Since Inception rr_AverageAnnualReturnSinceInception 6.32%
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 15, 2006
Claymore Exchange-Traded Fund Trust 1 | Guggenheim Spin-Off ETF | Guggenheim Spin-Off ETF  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol CSD
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.50%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.21%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.71%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.06%) [1]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.65%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 66
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 262
Annual Return 2007 rr_AnnualReturn2007 7.48%
Annual Return 2008 rr_AnnualReturn2008 (55.07%)
Annual Return 2009 rr_AnnualReturn2009 64.31%
Annual Return 2010 rr_AnnualReturn2010 21.91%
Annual Return 2011 rr_AnnualReturn2011 3.80%
Annual Return 2012 rr_AnnualReturn2012 26.95%
Annual Return 2013 rr_AnnualReturn2013 51.84%
Annual Return 2014 rr_AnnualReturn2014 1.39%
Annual Return 2015 rr_AnnualReturn2015 (12.05%)
Year to Date Return, Label rr_YearToDateReturnLabel year-to-date total return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Mar. 31, 2016
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 26.85%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (33.42%)
Label rr_AverageAnnualReturnLabel Returns Before Taxes
1 Year rr_AverageAnnualReturnYear01 (12.05%)
5 Years rr_AverageAnnualReturnYear05 12.28%
Since Inception rr_AverageAnnualReturnSinceInception 6.16%
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 15, 2006
Claymore Exchange-Traded Fund Trust 1 | Guggenheim Spin-Off ETF | Guggenheim Spin-Off ETF | After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Returns After Taxes on Distributions
1 Year rr_AverageAnnualReturnYear01 (13.02%)
5 Years rr_AverageAnnualReturnYear05 11.79%
Since Inception rr_AverageAnnualReturnSinceInception 5.64%
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 15, 2006
Claymore Exchange-Traded Fund Trust 1 | Guggenheim Spin-Off ETF | Guggenheim Spin-Off ETF | After Taxes on Distributions and Sales  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Returns After Taxes on Distributions and Sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 (6.82%)
5 Years rr_AverageAnnualReturnYear05 9.59%
Since Inception rr_AverageAnnualReturnSinceInception 4.65%
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 15, 2006
[1] Guggenheim Funds Investment Advisors, LLC (the "Investment Adviser") has contractually agreed to reimburse Fund expenses to the extent necessary to prevent the operating expenses of the Fund (excluding interest expenses, a portion of the Fund’s licensing fees, brokerage commissions and other trading expenses, taxes and extraordinary expenses such as litigation and other expenses not incurred in the ordinary course of the Fund’s business) from exceeding 0.60% of average net assets per year (the “Expense Cap”), at least until December 31, 2018, and prior to such date the Investment Adviser may not terminate the arrangement without the approval of the Board of Trustees (the "Board") of Claymore-Exchange Traded Fund Trust (the "Trust").