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The Financial Select Sector SPDR Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading Fund Summaries The Financial Select Sector SPDR Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Financial Select Sector SPDR Fund (the “Fund”) seeks to provide investment results that, before expenses, correspond generally to the price and yield performance of publicly traded equity securities of companies in the Financial Select Sector Index (the “Index”).
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
The table below describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund (“Fund Shares”). You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and Example below.
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 3% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 3.00%
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent The Fund's “Distribution and service (12b-1) fees” and “Total annual Fund operating expenses” have been restated to reflect current fees.
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 assumes that you invest $10,000 in the Fund for the time periods indicated, and then sell or hold all of your Fund 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 The Fund's Principal Investment Strategy
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
In seeking to track the performance of the Index, the Fund employs a replication strategy, which means that the Fund typically invests in substantially all of the securities represented in the Index in approximately the same proportions as the Index.
Under normal market conditions, the Fund generally invests substantially all, but at least 95%, of its total assets in the securities comprising the Index. The Fund will provide shareholders with at least 60 days' notice prior to any material change in this 95% investment policy. In addition, the Fund may invest in cash and cash equivalents or money market instruments, such as repurchase agreements and money market funds (including money market funds advised by SSGA Funds Management, Inc. (“SSGA FM” or the “Adviser”), the investment adviser to the Fund).
The Index includes companies that have been identified as Financial companies by the Global Industry Classification Standard (GICS®), including securities of companies from the following industries: diversified financial services; insurance; banks; capital markets; mortgage real estate investment trusts (“REITs”); consumer finance; and thrifts and mortgage finance. The Index is one of eleven Select Sector Indexes developed and maintained in accordance with the following criteria: (1) each of the component securities in the Index is a constituent of the S&P 500 Index; and (2) the Index is calculated by S&P Dow Jones Indices LLC (“S&P DJI”) based on a proprietary “modified market capitalization” methodology which means that modifications may be made to the market capitalization weights of single stock concentrations in order to conform to the requirements of the Internal Revenue Code of 1986, as amended (the “Internal Revenue Code” or “IRC”). As of November 30, 2021, the Index was composed of 65 stocks. 
The Index is also sponsored and compiled by S&P DJI. S&P DJI determines the composition of the Index and relative weightings of the securities in the Index based on the Index methodology (as the “Index Compilation Agent”). S& P DJI also publishes information regarding the market value of the Index (as the “Index Provider”). S&P DJI is not affiliated with the Fund or the Adviser. 
Risk [Heading] rr_RiskHeading Principal Risks of Investing in the Fund
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
As with all investments, there are certain risks of investing in the Fund. Fund Shares will change in value, and you could lose money by investing in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Market Risk: The Fund's investments are subject to changes in general economic conditions, general market fluctuations and the risks inherent in investment in securities markets. Investment markets can be volatile and prices of investments can change substantially due to various factors including, but not limited to, economic growth or recession, changes in interest rates, changes in the actual or perceived creditworthiness of issuers, and general market liquidity. The Fund is subject to the risk that geopolitical events will disrupt securities markets and adversely affect global economies and markets. Local, regional or global events such as war, acts of terrorism, the spread of infectious illness or other public health issues, or other events could have a significant impact on the Fund and its investments.
Equity Investing Risk: The market prices of equity securities owned by the Fund may go up or down, sometimes rapidly or unpredictably. The value of a security may decline for a number of reasons that may directly relate to the issuer and also may decline due to general industry or market conditions that are not specifically related to a particular company. In addition, equity markets tend to move in cycles, which may cause stock prices to fall over short or extended periods of time.
Financial Sector Risk: The Fund's assets will be concentrated in the financial sector, which means the Fund will be more affected by the performance of the financial sector than a fund that is more diversified. Financial services companies are subject to extensive governmental regulation which may limit both the amounts and types of loans and other financial commitments 
they can make, the interest rates and fees they can charge, the scope of their activities, the prices they can charge and the amount of capital they must maintain. Profitability is largely dependent on the availability and cost of capital funds and can fluctuate significantly when interest rates change or due to increased competition. In addition, deterioration of the credit markets generally may cause an adverse impact in a broad range of markets, including U.S. and international credit and interbank money markets generally, thereby affecting a wide range of financial institutions and markets. Certain events in the financial sector may cause an unusually high degree of volatility in the financial markets, both domestic and foreign, and cause certain financial services companies to incur large losses. Securities of financial services companies may experience a dramatic decline in value when such companies experience substantial declines in the valuations of their assets, take action to raise capital (such as the issuance of debt or equity securities), or cease operations. Credit losses resulting from financial difficulties of borrowers and financial losses associated with investment activities can negatively impact the sector. Insurance companies may be subject to severe price competition. Adverse economic, business or political developments could adversely affect financial institutions engaged in mortgage finance or other lending or investing activities directly or indirectly connected to the value of real estate. 
Fluctuation of Net Asset Value, Share Premiums and Discounts Risk: As with all exchange-traded funds, Fund Shares may be bought and sold in the secondary market at market prices. The trading prices of Fund Shares in the secondary market may differ from the Fund's daily net asset value per share and there may be times when the market price of the shares is more than the net asset value per share (premium) or less than the net asset value per share (discount). This risk is heightened in times of market volatility or periods of steep market declines. 
Indexing Strategy/Index Tracking Risk: The Fund is managed with an indexing investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the Index or of the actual securities comprising the Index. This differs from an actively-managed fund, which typically seeks to outperform a benchmark index. As a result, the Fund's performance may be less favorable than that of a portfolio managed using an active investment strategy. The 
structure and composition of the Index will affect the performance, volatility, and risk of the Index and, consequently, the performance, volatility, and risk of the Fund. Errors in index data, index computations or the construction of the Index in accordance with its methodology may occur from time to time and may not be identified and corrected by the Index Provider for a period of time or at all, which may have an adverse impact on the Fund and its shareholders. When there are changes made to the component securities of the Index and the Fund in turn makes similar changes to its portfolio, any transaction costs and market exposure arising from such portfolio changes will be borne directly by the Fund and its shareholders. The Fund may recognize gains as a result of rebalancing or reconstituting its securities holdings to reflect changes in the securities included in the Index. The Fund also may be required to distribute any such gains to its shareholders to avoid adverse federal income tax consequences. While the Adviser seeks to track the performance of the Index (i.e., achieve a high degree of correlation with the Index), the Fund's return may not match the return of the Index. The Fund incurs a number of operating expenses not applicable to the Index, and incurs costs in buying and selling securities. In addition, the Fund may not be fully invested at times, generally as a result of cash flows into or out of the Fund or reserves of cash held by the Fund to meet redemptions. 
Large-Capitalization Securities Risk: Returns on investments in securities of large companies could trail the returns on investments in securities of smaller and mid-sized companies. Larger companies may be unable to respond as quickly as smaller and mid-sized companies to competitive challenges or to changes in business, product, financial, or market conditions. Larger companies may not be able to maintain growth at the high rates that may be achieved by well-managed smaller and mid-sized companies. 
Non-Diversification Risk: As a “non-diversified” fund, the Fund may hold a smaller number of portfolio securities than many other funds. To the extent the Fund invests in a relatively small number of issuers, a decline in the market value of a particular security held by the Fund may affect its value more than if it invested in a larger number of issuers. The value of Fund Shares may be more volatile than the values of shares of more diversified funds. The Fund may become diversified for periods of time solely as a
result of tracking the Index (e.g., changes in weightings of one or more component securities). 
Risk Lose Money [Text] rr_RiskLoseMoney As with all investments, there are certain risks of investing in the Fund. Fund Shares will change in value, and you could lose money by investing in the Fund.
RIsk Not Insured [Text] rr_RiskNotInsured An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Non-Diversification Risk: As a “non-diversified” fund, the Fund may hold a smaller number of portfolio securities than many other funds. To the extent the Fund invests in a relatively small number of issuers, a decline in the market value of a particular security held by the Fund may affect its value more than if it invested in a larger number of issuers. The value of Fund Shares may be more volatile than the values of shares of more diversified funds. The Fund may become diversified for periods of time solely as a result of tracking the Index (e.g., changes in weightings of one or more component securities). 
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The following bar chart and table provide an 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 certain time periods compare with the average annual returns of the Index and the S&P 500 Index. The S&P 500 Index is a well-known, broad-based securities market index that includes common stocks of approximately 500 companies from a number of sectors representing a significant portion of the market value of all stocks publicly traded in the United States. 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 is available by calling 1-866-732-8673 or visiting our website at www.sectorspdr.com.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following bar chart and table provide an 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 certain time periods compare with the average annual returns of the Index and the S&P 500 Index.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 1-866-732-8673
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.sectorspdr.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 Annual Total Returns (years ended 12/31)
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarterly Return: 23.15% (Q4, 2020)
Lowest Quarterly Return: -31.94% (Q1, 2020) 
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns (for periods ending 12/31/21)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold Fund Shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher The returns after taxes can exceed the returns before taxes due to an assumed tax benefit for a shareholder from realizing a capital loss on a sale of Fund Shares.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock
The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not
relevant to investors who hold Fund Shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts. The returns after taxes can exceed the returns before taxes due to an assumed tax benefit for a shareholder from realizing a capital loss on a sale of Fund Shares.
The Financial Select Sector SPDR Fund | The Financial Select Sector SPDR Fund  
Risk/Return: rr_RiskReturnAbstract  
Management fees rr_ManagementFeesOverAssets 0.03%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.02% [1]
Other expenses rr_OtherExpensesOverAssets 0.05%
Total annual Fund operating expenses rr_ExpensesOverAssets 0.10% [1]
Year 1 rr_ExpenseExampleYear01 $ 10
Year 3 rr_ExpenseExampleYear03 32
Year 5 rr_ExpenseExampleYear05 56
Year 10 rr_ExpenseExampleYear10 128
Year 1 rr_ExpenseExampleNoRedemptionYear01 10
Year 3 rr_ExpenseExampleNoRedemptionYear03 32
Year 5 rr_ExpenseExampleNoRedemptionYear05 56
Year 10 rr_ExpenseExampleNoRedemptionYear10 $ 128
2012 rr_AnnualReturn2012 28.51%
2013 rr_AnnualReturn2013 35.37%
2014 rr_AnnualReturn2014 15.03%
2015 rr_AnnualReturn2015 (1.60%)
2016 rr_AnnualReturn2016 22.69%
2017 rr_AnnualReturn2017 22.04%
2018 rr_AnnualReturn2018 (13.09%)
2019 rr_AnnualReturn2019 31.90%
2020 rr_AnnualReturn2020 (1.83%)
2021 rr_AnnualReturn2021 34.77%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return:
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2020
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 23.15%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return:
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (31.94%)
One Year rr_AverageAnnualReturnYear01 34.77%
Five Years rr_AverageAnnualReturnYear05 13.10%
Ten Years rr_AverageAnnualReturnYear10 16.16%
The Financial Select Sector SPDR Fund | Return After Taxes on Distributions | The Financial Select Sector SPDR Fund  
Risk/Return: rr_RiskReturnAbstract  
One Year rr_AverageAnnualReturnYear01 34.22%
Five Years rr_AverageAnnualReturnYear05 12.57%
Ten Years rr_AverageAnnualReturnYear10 15.27%
The Financial Select Sector SPDR Fund | Return After Taxes on Distributions and Sale of Fund Shares | The Financial Select Sector SPDR Fund  
Risk/Return: rr_RiskReturnAbstract  
One Year rr_AverageAnnualReturnYear01 20.93%
Five Years rr_AverageAnnualReturnYear05 10.36%
Ten Years rr_AverageAnnualReturnYear10 13.49%
The Financial Select Sector SPDR Fund | Financial Select Sector Index (reflects no deduction for fees, expenses or taxes)  
Risk/Return: rr_RiskReturnAbstract  
One Year rr_AverageAnnualReturnYear01 35.04%
Five Years rr_AverageAnnualReturnYear05 13.26%
Ten Years rr_AverageAnnualReturnYear10 16.32%
The Financial Select Sector SPDR Fund | S&P 500 Index (reflects no deduction for fees, expenses or taxes)  
Risk/Return: rr_RiskReturnAbstract  
One Year rr_AverageAnnualReturnYear01 28.71%
Five Years rr_AverageAnnualReturnYear05 18.47%
Ten Years rr_AverageAnnualReturnYear10 16.55%
[1] The Fund's “Distribution and service (12b-1) fees” and “Total annual Fund operating expenses” have been restated to reflect current fees.