Securities Act of 1933 Registration No. 002-41839
Investment Company Act of 1940 Registration No. 811-02105
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM N-1A
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 x
o Pre-Effective Amendment No. ______
x Post-Effective Amendment No. 361
and
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 x
x Amendment No. 361
Fidelity Salem Street Trust
(Exact Name of Registrant as Specified in Charter)
245 Summer Street, Boston, Massachusetts 02210
(Address of Principal Executive Offices)(Zip Code)
Registrant’s Telephone Number: 617-563-7000
Marc Bryant, Secretary
245 Summer Street
Boston, Massachusetts 02210
(Name and Address of Agent for Service)
It is proposed that this filing will become effective immediately upon filing pursuant to paragraph (b).
EXHIBIT INDEX
Exhibit | Exhibit No. |
XBRL Instance Document | EX-101.INS |
XBRL Taxonomy Extension Schema Document | EX-101.SCH |
XBRL Taxonomy Extension Calculation Linkbase Document | EX-101.CAL |
XBRL Taxonomy Extension Definition Linkbase Document | EX-101.DEF |
XBRL Taxonomy Extension Labels Linkbase Document | EX-101.LAB |
XBRL Taxonomy Extension Presentation Linkbase Document | EX-101.PRE |
SIGNATURES
Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all of the requirements for the effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933 and has duly caused this Post-Effective Amendment No. 361 to the Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Boston, and Commonwealth of Massachusetts, on the 8th day of March 2017.
| Fidelity Salem Street Trust |
| By | /s/Stephanie J. Dorsey |
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| Stephanie J. Dorsey, President |
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Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.
(Signature) |
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/s/Stephanie J. Dorsey |
| President and Treasurer | March 8, 2017 |
Stephanie J. Dorsey |
| (Principal Executive Officer) |
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/s/Howard J. Galligan III |
| Chief Financial Officer | March 8, 2017 |
Howard J. Galligan III |
| (Principal Financial Officer) |
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/s/Abigail P. Johnson | | Trustee | March 8, 2017 |
Abigail P. Johnson |
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/s/Elizabeth S. Acton | * | Trustee | March 8, 2017 |
Elizabeth S. Acton |
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/s/Jonathan Chiel | * | Trustee | March 8, 2017 |
Jonathan Chiel |
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/s/John Engler | * | Trustee | March 8, 2017 |
John Engler |
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/s/Albert R. Gamper, Jr. | * | Trustee | March 8, 2017 |
Albert R. Gamper, Jr. |
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/s/Robert F. Gartland | * | Trustee | March 8, 2017 |
Robert F. Gartland |
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/s/Arthur E. Johnson | * | Trustee | March 8, 2017 |
Arthur E. Johnson |
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/s/Michael E. Kenneally | * | Trustee | March 8, 2017 |
Michael E. Kenneally |
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/s/Marie L. Knowles | * | Trustee | March 8, 2017 |
Marie L. Knowles |
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/s/Mark A. Murray | * | Trustee | March 8, 2017 |
Mark A. Murray |
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/s/Jennifer Toolin McAuliffe | * | Trustee | March 8, 2017 |
Jennifer Toolin McAuliffe |
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| By: | /s/Marc R. Bryant |
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| Marc R. Bryant, pursuant to a power of attorney dated December 16, 2015 and filed herewith. |
* | By: | /s/Megan C. Johnson |
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| Megan C. Johnson, pursuant to powers of attorney dated October 5, 2016 and January 1, 2017 and filed herewith. |
POWER OF ATTORNEY
We, the undersigned Directors or Trustees, as the case may be, of the following investment companies:
Fidelity Aberdeen Street Trust Fidelity Advisor Series II Fidelity Advisor Series IV Fidelity Boylston Street Trust Fidelity California Municipal Trust Fidelity California Municipal Trust II Fidelity Central Investment Portfolios II LLC Fidelity Charles Street Trust Fidelity Colchester Street Trust Fidelity Commonwealth Trust II Fidelity Court Street Trust Fidelity Court Street Trust II Fidelity Garrison Street Trust Fidelity Hereford Street Trust Fidelity Income Fund Fidelity Massachusetts Municipal Trust | Fidelity Merrimack Street Trust Fidelity Money Market Trust Fidelity Municipal Trust Fidelity Municipal Trust II Fidelity Newbury Street Trust Fidelity New York Municipal Trust Fidelity New York Municipal Trust II Fidelity Oxford Street Trust Fidelity Oxford Street Trust II Fidelity Phillips Street Trust Fidelity Revere Street Trust Fidelity Salem Street Trust Fidelity School Street Trust Fidelity Union Street Trust Fidelity Union Street Trust II Variable Insurance Products Fund V |
in addition to any other Fidelity Fund for which the undersigned individuals serve as Directors or Trustees (collectively, the Funds), hereby revoke all previous powers of attorney we have given to sign and otherwise act in our names and behalf in matters involving any investment company for which FMR or an affiliate acts as investment adviser and hereby constitute and appoint Thomas C. Bogle, John V. OHanlon, Robert W. Helm, Megan C. Johnson, and Anthony H. Zacharski, each of them singly, our true and lawful attorneys-in-fact, with full power of substitution, and with full power to each of them, to sign for us and in our names in the appropriate capacities, all Registration Statements of the Funds on Form N-1A, or any successors thereto, any and all subsequent Amendments, Pre-Effective Amendments, or Post-Effective Amendments to said Registration Statements or any successors thereto, and any supplements or other instruments in connection therewith, and generally to do all such things in our names and behalf in connection therewith as said attorneys-in-fact deem necessary or appropriate, to comply with the provisions of the Securities Act of 1933 and the Investment Company Act of 1940, and all related requirements of the Securities and Exchange Commission. We hereby ratify and confirm all that said attorneys-in-fact or their substitutes may do or cause to be done by virtue hereof. This power of attorney is effective for all documents filed on or after January 1, 2017.
WITNESS our hands on this first day of January 2017.
/s/Elizabeth S. Acton | /s/Michael E. Kenneally |
Elizabeth S. Acton | Michael E. Kenneally |
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/s/John Engler | /s/Marie L. Knowles |
John Engler | Marie L. Knowles |
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/s/Albert R. Gamper, Jr. | /s/Jennifer Toolin McAuliffe |
Albert R. Gamper, Jr. | Jennifer Toolin McAuliffe |
/s/Robert F. Gartland | /s/Mark A. Murray |
Robert F. Gartland | Mark A. Murray |
/s/Arthur E. Johnson |
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Arthur E. Johnson |
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POWER OF ATTORNEY
I, the undersigned Trustee of the following investment companies:
Fidelity Aberdeen Street Trust Fidelity Advisor Series II Fidelity Advisor Series IV Fidelity Boylston Street Trust Fidelity California Municipal Trust Fidelity California Municipal Trust II Fidelity Central Investment Portfolios II LLC Fidelity Charles Street Trust Fidelity Colchester Street Trust Fidelity Commonwealth Trust II Fidelity Court Street Trust Fidelity Court Street Trust II Fidelity Garrison Street Trust Fidelity Hereford Street Trust Fidelity Income Fund Fidelity Massachusetts Municipal Trust | Fidelity Merrimack Street Trust Fidelity Money Market Trust Fidelity Municipal Trust Fidelity Municipal Trust II Fidelity Newbury Street Trust Fidelity New York Municipal Trust Fidelity New York Municipal Trust II Fidelity Oxford Street Trust Fidelity Oxford Street Trust II Fidelity Phillips Street Trust Fidelity Revere Street Trust Fidelity Salem Street Trust Fidelity School Street Trust Fidelity Union Street Trust Fidelity Union Street Trust II Variable Insurance Products Fund V |
in addition to any other Fidelity Fund for which the undersigned individual serves as Trustee (collectively, the Funds), hereby constitute and appoint Marc R. Bryant, my true and lawful attorney-in-fact, with full power of substitution, and with full power to sign for me and in my name in the appropriate capacity, all Registration Statements of the Funds on Form N-1A, or any successors thereto, any and all subsequent Amendments, Pre-Effective Amendments, or Post-Effective Amendments to said Registration Statements or any successors thereto, and any supplements or other instruments in connection therewith, and generally to do all such things in my name and behalf in connection therewith as said attorney-in-fact deems necessary or appropriate, to comply with the provisions of the Securities Act of 1933 and the Investment Company Act of 1940, and all related requirements of the Securities and Exchange Commission. I hereby ratify and confirm all that said attorney-in-fact or his substitutes may do or cause to be done by virtue hereof. This power of attorney is effective for all documents filed on or after December 16th, 2015.
WITNESS my hand on this 16th day of December, 2015.
/s/Abigail P. Johnson |
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Abigail P. Johnson |
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POWER OF ATTORNEY
I, the undersigned Trustee of the following investment company:
Fidelity Salem Street Trust
in addition to any other Fidelity Fund for which the undersigned individual serves as Director or Trustee (collectively, the Funds), hereby constitute and appoint Thomas C. Bogle, Marc R. Bryant, John V. OHanlon, Robert W. Helm, Megan C. Johnson, and Anthony H. Zacharski, each of them singly, my true and lawful attorneys-in-fact, with full power of substitution, and with full power to each of them, to sign for me and in my name in the appropriate capacity, all Registration Statements of the Funds on Form N-1A, or any successors thereto, any and all subsequent Amendments, Pre-Effective Amendments, or Post-Effective Amendments to said Registration Statements or any successors thereto, and any supplements or other instruments in connection therewith, and generally to do all such things in my name and behalf in connection therewith as said attorneys-in-fact deem necessary or appropriate, to comply with the provisions of the Securities Act of 1933 and the Investment Company Act of 1940, and all related requirements of the Securities and Exchange Commission. I hereby ratify and confirm all that said attorneys-in-fact or their substitutes may do or cause to be done by virtue hereof. This power of attorney is effective for all documents filed on or after October 5, 2016.
WITNESS my hand on this 5th day of October, 2016.
/s/Jonathan Chiel
Jonathan Chiel
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Label | Element | Value |
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Risk/Return: | rr_RiskReturnAbstract | |
Document Type | dei_DocumentType | 485BPOS |
Document Period End Date | dei_DocumentPeriodEndDate | Feb. 17, 2017 |
Registrant Name | dei_EntityRegistrantName | FIDELITY SALEM STREET TRUST |
Central Index Key | dei_EntityCentralIndexKey | 0000035315 |
Amendment Flag | dei_AmendmentFlag | false |
Document Creation Date | dei_DocumentCreationDate | Feb. 17, 2017 |
Document Effective Date | dei_DocumentEffectiveDate | Feb. 17, 2017 |
Prospectus Date | rr_ProspectusDate | Feb. 17, 2017 |
NF_12.31 Fidelity Flex Inflation-Protected Bond Index Fund PRO-01 | Fidelity Flex℠ Inflation-Protected Bond Index Fund | |||||||||||||||||||
Fund Summary Fund: | |||||||||||||||||||
Investment Objective | |||||||||||||||||||
The fund seeks to provide investment results that correspond to the total return of the inflation-protected sector of the United States Treasury market. | |||||||||||||||||||
Fee Table | |||||||||||||||||||
The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. | |||||||||||||||||||
Shareholder fees | |||||||||||||||||||
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Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment) | |||||||||||||||||||
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This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: | |||||||||||||||||||
Sell All Shares | |||||||||||||||||||
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Portfolio Turnover | |||||||||||||||||||
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 operating expenses or in the example, affect the fund's performance. | |||||||||||||||||||
Principal Investment Strategies | |||||||||||||||||||
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Principal Investment Risks | |||||||||||||||||||
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. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund. | |||||||||||||||||||
Performance | |||||||||||||||||||
Performance history will be available for the fund after the fund has been in operation for one calendar year. |
Label | Element | Value | ||||
---|---|---|---|---|---|---|
Risk/Return: | rr_RiskReturnAbstract | |||||
Registrant Name | dei_EntityRegistrantName | FIDELITY SALEM STREET TRUST | ||||
Prospectus Date | rr_ProspectusDate | Feb. 17, 2017 | ||||
NF_12.31 Fidelity Flex Inflation-Protected Bond Index Fund PRO-01 | Fidelity Flex℠ Inflation-Protected Bond Index Fund | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Risk/Return [Heading] | rr_RiskReturnHeading | Fund Summary Fund: |
||||
Objective [Heading] | rr_ObjectiveHeading | Investment Objective | ||||
Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The fund seeks to provide investment results that correspond to the total return of the inflation-protected sector of the United States Treasury market. |
||||
Expense [Heading] | rr_ExpenseHeading | Fee Table | ||||
Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. |
||||
Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | Shareholder fees |
||||
(fees paid directly from your investment) | rr_ShareholderFeeOther | none | ||||
Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Operating Expenses (expenses that you pay each year as a % 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 operating expenses or in the example, affect the fund's performance. |
||||
Other Expenses, New Fund, Based on Estimates [Text] | rr_OtherExpensesNewFundBasedOnEstimates | Based on estimated amounts for the current fiscal year. | ||||
Expenses Restated to Reflect Current [Text] | rr_ExpensesRestatedToReflectCurrent | The fund is available only to certain fee-based accounts offered by Fidelity. Retirement plans, plan sponsors and/or plan participants pay a wrap fee that covers investment advisory and administrative services. | ||||
Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: |
||||
Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | Sell All Shares |
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Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies | ||||
Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock |
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Risk [Heading] | rr_RiskHeading | Principal Investment 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. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund. |
||||
Risk Lose Money [Text] | rr_RiskLoseMoney | You could lose money by investing in the fund. | ||||
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 | ||||
Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | Performance history will be available for the fund after the fund has been in operation for one calendar year. |
||||
Performance One Year or Less [Text] | rr_PerformanceOneYearOrLess | Performance history will be available for the fund after the fund has been in operation for one calendar year. | ||||
NF_12.31 Fidelity Flex Inflation-Protected Bond Index Fund PRO-01 | Fidelity Flex℠ Inflation-Protected Bond Index Fund | Fidelity Flex Inflation-Protected Bond Index Fund-Default | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Management fee | rr_ManagementFeesOverAssets | none | ||||
Distribution and/or Service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | none | ||||
Other expenses | rr_OtherExpensesOverAssets | none | [1] | |||
Total annual operating expenses | rr_ExpensesOverAssets | none | [2] | |||
1 year | rr_ExpenseExampleYear01 | none | ||||
3 years | rr_ExpenseExampleYear03 | none | ||||
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NF_10.31 Fidelity Flex International Index Fund PRO-01 | Fidelity Flex℠ International Index Fund | |||||||||||||||||||
Fund Summary Fund: | |||||||||||||||||||
Investment Objective | |||||||||||||||||||
The fund seeks to provide investment results that correspond to the total return of foreign developed and emerging stock markets. | |||||||||||||||||||
Fee Table | |||||||||||||||||||
The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. | |||||||||||||||||||
Shareholder fees | |||||||||||||||||||
| |||||||||||||||||||
Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment) | |||||||||||||||||||
| |||||||||||||||||||
This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: | |||||||||||||||||||
Sell All Shares | |||||||||||||||||||
| |||||||||||||||||||
Portfolio Turnover | |||||||||||||||||||
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 operating expenses or in the example, affect the fund's performance. | |||||||||||||||||||
Principal Investment Strategies | |||||||||||||||||||
| |||||||||||||||||||
Principal Investment Risks | |||||||||||||||||||
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. You could lose money by investing in the fund. | |||||||||||||||||||
Performance | |||||||||||||||||||
Performance history will be available for the fund after the fund has been in operation for one calendar year. |
Label | Element | Value | ||||
---|---|---|---|---|---|---|
Risk/Return: | rr_RiskReturnAbstract | |||||
Registrant Name | dei_EntityRegistrantName | FIDELITY SALEM STREET TRUST | ||||
Prospectus Date | rr_ProspectusDate | Feb. 17, 2017 | ||||
NF_10.31 Fidelity Flex International Index Fund PRO-01 | Fidelity Flex℠ International Index Fund | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Risk/Return [Heading] | rr_RiskReturnHeading | Fund Summary Fund: |
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Objective [Heading] | rr_ObjectiveHeading | Investment Objective | ||||
Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The fund seeks to provide investment results that correspond to the total return of foreign developed and emerging stock markets. |
||||
Expense [Heading] | rr_ExpenseHeading | Fee Table | ||||
Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. |
||||
Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | Shareholder fees |
||||
(fees paid directly from your investment) | rr_ShareholderFeeOther | none | ||||
Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment) |
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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 operating expenses or in the example, affect the fund's performance. |
||||
Other Expenses, New Fund, Based on Estimates [Text] | rr_OtherExpensesNewFundBasedOnEstimates | Based on estimated amounts for the current fiscal year. | ||||
Expenses Restated to Reflect Current [Text] | rr_ExpensesRestatedToReflectCurrent | The fund is available only to certain fee-based accounts offered by Fidelity. Retirement plans, plan sponsors and/or participants pay a wrap fee that covers investment advisory and administrative services. | ||||
Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: |
||||
Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | Sell All Shares |
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Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies | ||||
Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock |
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Risk [Heading] | rr_RiskHeading | Principal Investment 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. You could lose money by investing in the fund. |
||||
Risk Lose Money [Text] | rr_RiskLoseMoney | You could lose money by investing in the fund. | ||||
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 | ||||
Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | Performance history will be available for the fund after the fund has been in operation for one calendar year. |
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Performance One Year or Less [Text] | rr_PerformanceOneYearOrLess | Performance history will be available for the fund after the fund has been in operation for one calendar year. | ||||
NF_10.31 Fidelity Flex International Index Fund PRO-01 | Fidelity Flex℠ International Index Fund | Fidelity Flex International Index Fund-Default | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Management fee | rr_ManagementFeesOverAssets | none | ||||
Distribution and/or Service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | none | ||||
Other expenses | rr_OtherExpensesOverAssets | none | [1] | |||
Total annual operating expenses | rr_ExpensesOverAssets | none | [2] | |||
1 year | rr_ExpenseExampleYear01 | none | ||||
3 years | rr_ExpenseExampleYear03 | none | ||||
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NF_04.30 Fidelity Flex Large Cap Growth Index Fund PRO-01 | Fidelity Flex℠ Large Cap Growth Index Fund | |||||||||||||||||||
Fund Summary Fund: | |||||||||||||||||||
Investment Objective | |||||||||||||||||||
The fund seeks to provide investment results that correspond to the total return of stocks of large capitalization U.S. companies. | |||||||||||||||||||
Fee Table | |||||||||||||||||||
The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. | |||||||||||||||||||
Shareholder fees | |||||||||||||||||||
| |||||||||||||||||||
Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment) | |||||||||||||||||||
| |||||||||||||||||||
This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: | |||||||||||||||||||
Sell All Shares | |||||||||||||||||||
| |||||||||||||||||||
Portfolio Turnover | |||||||||||||||||||
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 operating expenses or in the example, affect the fund's performance. | |||||||||||||||||||
Principal Investment Strategies | |||||||||||||||||||
| |||||||||||||||||||
Principal Investment Risks | |||||||||||||||||||
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. You could lose money by investing in the fund. | |||||||||||||||||||
Performance | |||||||||||||||||||
Performance history will be available for the fund after the fund has been in operation for one calendar year. |
Label | Element | Value | ||||
---|---|---|---|---|---|---|
Risk/Return: | rr_RiskReturnAbstract | |||||
Registrant Name | dei_EntityRegistrantName | FIDELITY SALEM STREET TRUST | ||||
Prospectus Date | rr_ProspectusDate | Feb. 17, 2017 | ||||
NF_04.30 Fidelity Flex Large Cap Growth Index Fund PRO-01 | Fidelity Flex℠ Large Cap Growth Index Fund | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Risk/Return [Heading] | rr_RiskReturnHeading | Fund Summary Fund: |
||||
Objective [Heading] | rr_ObjectiveHeading | Investment Objective | ||||
Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The fund seeks to provide investment results that correspond to the total return of stocks of large capitalization U.S. companies. |
||||
Expense [Heading] | rr_ExpenseHeading | Fee Table | ||||
Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. |
||||
Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | Shareholder fees |
||||
(fees paid directly from your investment) | rr_ShareholderFeeOther | none | ||||
Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Operating Expenses (expenses that you pay each year as a % 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 operating expenses or in the example, affect the fund's performance. |
||||
Other Expenses, New Fund, Based on Estimates [Text] | rr_OtherExpensesNewFundBasedOnEstimates | Based on estimated amounts for the current fiscal year. | ||||
Expenses Restated to Reflect Current [Text] | rr_ExpensesRestatedToReflectCurrent | The fund is available only to certain fee-based accounts offered by Fidelity. Retirement plans, plan sponsors and/or participants pay a wrap fee that covers investment advisory and administrative services. | ||||
Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: |
||||
Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | Sell All Shares |
||||
Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies | ||||
Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock |
|
||||
Risk [Heading] | rr_RiskHeading | Principal Investment 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. You could lose money by investing in the fund. |
||||
Risk Lose Money [Text] | rr_RiskLoseMoney | You could lose money by investing in the fund. | ||||
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 | ||||
Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | Performance history will be available for the fund after the fund has been in operation for one calendar year. |
||||
Performance One Year or Less [Text] | rr_PerformanceOneYearOrLess | Performance history will be available for the fund after the fund has been in operation for one calendar year. | ||||
NF_04.30 Fidelity Flex Large Cap Growth Index Fund PRO-01 | Fidelity Flex℠ Large Cap Growth Index Fund | Fidelity Flex Large Cap Growth Index Fund-Default | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Management fee | rr_ManagementFeesOverAssets | none | ||||
Distribution and/or Service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | none | ||||
Other expenses | rr_OtherExpensesOverAssets | none | [1] | |||
Total annual operating expenses | rr_ExpensesOverAssets | none | [2] | |||
1 year | rr_ExpenseExampleYear01 | none | ||||
3 years | rr_ExpenseExampleYear03 | none | ||||
|
NF_04.30 Fidelity Flex Large Cap Value Index Fund PRO-01 | Fidelity Flex℠ Large Cap Value Index Fund | |||||||||||||||||||
Fund Summary Fund: | |||||||||||||||||||
Investment Objective | |||||||||||||||||||
The fund seeks to provide investment results that correspond to the total return of stocks of large capitalization U.S. companies. | |||||||||||||||||||
Fee Table | |||||||||||||||||||
The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. | |||||||||||||||||||
Shareholder fees | |||||||||||||||||||
| |||||||||||||||||||
Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment) | |||||||||||||||||||
| |||||||||||||||||||
This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: | |||||||||||||||||||
Sell All Shares | |||||||||||||||||||
| |||||||||||||||||||
Portfolio Turnover | |||||||||||||||||||
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 operating expenses or in the example, affect the fund's performance. | |||||||||||||||||||
Principal Investment Strategies | |||||||||||||||||||
| |||||||||||||||||||
Principal Investment Risks | |||||||||||||||||||
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. You could lose money by investing in the fund. | |||||||||||||||||||
Performance | |||||||||||||||||||
Performance history will be available for the fund after the fund has been in operation for one calendar year. |
Label | Element | Value | ||||
---|---|---|---|---|---|---|
Risk/Return: | rr_RiskReturnAbstract | |||||
Registrant Name | dei_EntityRegistrantName | FIDELITY SALEM STREET TRUST | ||||
Prospectus Date | rr_ProspectusDate | Feb. 17, 2017 | ||||
NF_04.30 Fidelity Flex Large Cap Value Index Fund PRO-01 | Fidelity Flex℠ Large Cap Value Index Fund | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Risk/Return [Heading] | rr_RiskReturnHeading | Fund Summary Fund: |
||||
Objective [Heading] | rr_ObjectiveHeading | Investment Objective | ||||
Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The fund seeks to provide investment results that correspond to the total return of stocks of large capitalization U.S. companies. |
||||
Expense [Heading] | rr_ExpenseHeading | Fee Table | ||||
Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. |
||||
Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | Shareholder fees |
||||
(fees paid directly from your investment) | rr_ShareholderFeeOther | none | ||||
Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Operating Expenses (expenses that you pay each year as a % 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 operating expenses or in the example, affect the fund's performance. |
||||
Other Expenses, New Fund, Based on Estimates [Text] | rr_OtherExpensesNewFundBasedOnEstimates | Based on estimated amounts for the current fiscal year. | ||||
Expenses Restated to Reflect Current [Text] | rr_ExpensesRestatedToReflectCurrent | The fund is available only to certain fee-based accounts offered by Fidelity. Retirement plans, plan sponsors and/or participants pay a wrap fee that covers investment advisory and administrative services. | ||||
Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: |
||||
Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | Sell All Shares |
||||
Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies | ||||
Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock |
|
||||
Risk [Heading] | rr_RiskHeading | Principal Investment 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. You could lose money by investing in the fund. |
||||
Risk Lose Money [Text] | rr_RiskLoseMoney | You could lose money by investing in the fund. | ||||
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 | ||||
Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | Performance history will be available for the fund after the fund has been in operation for one calendar year. |
||||
Performance One Year or Less [Text] | rr_PerformanceOneYearOrLess | Performance history will be available for the fund after the fund has been in operation for one calendar year. | ||||
NF_04.30 Fidelity Flex Large Cap Value Index Fund PRO-01 | Fidelity Flex℠ Large Cap Value Index Fund | FIdelity Flex Large Cap Value Index Fund-Default | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Management fee | rr_ManagementFeesOverAssets | none | ||||
Distribution and/or Service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | none | ||||
Other expenses | rr_OtherExpensesOverAssets | none | [1] | |||
Total annual operating expenses | rr_ExpensesOverAssets | none | [2] | |||
1 year | rr_ExpenseExampleYear01 | none | ||||
3 years | rr_ExpenseExampleYear03 | none | ||||
|
NF_04.30 Fidelity Flex Mid Cap Index Fund & Fidelity Flex Small Cap Index Fund combo PRO-01 | Fidelity Flex℠ Mid Cap Index Fund | |||||||||||||||||||
Fund Summary Fund: | |||||||||||||||||||
Investment Objective | |||||||||||||||||||
The fund seeks to provide investment results that correspond to the total return of stocks of mid-capitalization United States companies. | |||||||||||||||||||
Fee Table | |||||||||||||||||||
The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. | |||||||||||||||||||
Shareholder fees | |||||||||||||||||||
| |||||||||||||||||||
Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment) | |||||||||||||||||||
| |||||||||||||||||||
This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: | |||||||||||||||||||
Sell All Shares | |||||||||||||||||||
| |||||||||||||||||||
Portfolio Turnover | |||||||||||||||||||
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 operating expenses or in the example, affect the fund's performance. | |||||||||||||||||||
Principal Investment Strategies | |||||||||||||||||||
| |||||||||||||||||||
Principal Investment Risks | |||||||||||||||||||
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. You could lose money by investing in the fund. | |||||||||||||||||||
Performance | |||||||||||||||||||
Performance history will be available for the fund after the fund has been in operation for one calendar year. |
Label | Element | Value | ||||
---|---|---|---|---|---|---|
Risk/Return: | rr_RiskReturnAbstract | |||||
Registrant Name | dei_EntityRegistrantName | FIDELITY SALEM STREET TRUST | ||||
Prospectus Date | rr_ProspectusDate | Feb. 17, 2017 | ||||
NF_04.30 Fidelity Flex Mid Cap Index Fund & Fidelity Flex Small Cap Index Fund combo PRO-01 | Fidelity Flex℠ Mid Cap Index Fund | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Risk/Return [Heading] | rr_RiskReturnHeading | Fund Summary Fund: |
||||
Objective [Heading] | rr_ObjectiveHeading | Investment Objective | ||||
Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The fund seeks to provide investment results that correspond to the total return of stocks of mid-capitalization United States companies. |
||||
Expense [Heading] | rr_ExpenseHeading | Fee Table | ||||
Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. |
||||
Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | Shareholder fees |
||||
(fees paid directly from your investment) | rr_ShareholderFeeOther | none | ||||
Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Operating Expenses (expenses that you pay each year as a % 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 operating expenses or in the example, affect the fund's performance. |
||||
Other Expenses, New Fund, Based on Estimates [Text] | rr_OtherExpensesNewFundBasedOnEstimates | Based on estimated amounts for the current fiscal year. | ||||
Expenses Restated to Reflect Current [Text] | rr_ExpensesRestatedToReflectCurrent | The fund is available only to certain fee-based accounts offered by Fidelity. Retirement plans, plan sponsors and/or participants pay a wrap fee that covers investment advisory and administrative services. | ||||
Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: |
||||
Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | Sell All Shares |
||||
Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies | ||||
Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock |
|
||||
Risk [Heading] | rr_RiskHeading | Principal Investment 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. You could lose money by investing in the fund. |
||||
Risk Lose Money [Text] | rr_RiskLoseMoney | You could lose money by investing in the fund. | ||||
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 | ||||
Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | Performance history will be available for the fund after the fund has been in operation for one calendar year. |
||||
Performance One Year or Less [Text] | rr_PerformanceOneYearOrLess | Performance history will be available for the fund after the fund has been in operation for one calendar year. | ||||
NF_04.30 Fidelity Flex Mid Cap Index Fund & Fidelity Flex Small Cap Index Fund combo PRO-01 | Fidelity Flex℠ Mid Cap Index Fund | Fidelity Flex Mid Cap Index Fund-Default | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Management fee | rr_ManagementFeesOverAssets | none | ||||
Distribution and/or Service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | none | ||||
Other expenses | rr_OtherExpensesOverAssets | none | [1] | |||
Total annual operating expenses | rr_ExpensesOverAssets | none | [2] | |||
1 year | rr_ExpenseExampleYear01 | none | ||||
3 years | rr_ExpenseExampleYear03 | none | ||||
|
NF_04.30 Fidelity Flex Mid Cap Index Fund & Fidelity Flex Small Cap Index Fund combo PRO-01 | Fidelity Flex℠ Small Cap Index Fund | |||||||||||||||||||
Fund Summary Fund: | |||||||||||||||||||
Investment Objective | |||||||||||||||||||
The fund seeks to provide investment results that correspond to the total return of stocks of small-capitalization United States companies. | |||||||||||||||||||
Fee Table | |||||||||||||||||||
The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. | |||||||||||||||||||
Shareholder fees | |||||||||||||||||||
| |||||||||||||||||||
Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment) | |||||||||||||||||||
| |||||||||||||||||||
This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: | |||||||||||||||||||
Sell All Shares | |||||||||||||||||||
| |||||||||||||||||||
Portfolio Turnover | |||||||||||||||||||
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 operating expenses or in the example, affect the fund's performance. | |||||||||||||||||||
Principal Investment Strategies | |||||||||||||||||||
| |||||||||||||||||||
Principal Investment Risks | |||||||||||||||||||
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. You could lose money by investing in the fund. | |||||||||||||||||||
Performance | |||||||||||||||||||
Performance history will be available for the fund after the fund has been in operation for one calendar year. |
Label | Element | Value | ||||
---|---|---|---|---|---|---|
Risk/Return: | rr_RiskReturnAbstract | |||||
Registrant Name | dei_EntityRegistrantName | FIDELITY SALEM STREET TRUST | ||||
Prospectus Date | rr_ProspectusDate | Feb. 17, 2017 | ||||
NF_04.30 Fidelity Flex Mid Cap Index Fund & Fidelity Flex Small Cap Index Fund combo PRO-01 | Fidelity Flex℠ Small Cap Index Fund | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Risk/Return [Heading] | rr_RiskReturnHeading | Fund Summary Fund: |
||||
Objective [Heading] | rr_ObjectiveHeading | Investment Objective | ||||
Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The fund seeks to provide investment results that correspond to the total return of stocks of small-capitalization United States companies. |
||||
Expense [Heading] | rr_ExpenseHeading | Fee Table | ||||
Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. |
||||
Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | Shareholder fees |
||||
(fees paid directly from your investment) | rr_ShareholderFeeOther | none | ||||
Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Operating Expenses (expenses that you pay each year as a % 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 operating expenses or in the example, affect the fund's performance. |
||||
Other Expenses, New Fund, Based on Estimates [Text] | rr_OtherExpensesNewFundBasedOnEstimates | Based on estimated amounts for the current fiscal year. | ||||
Expenses Restated to Reflect Current [Text] | rr_ExpensesRestatedToReflectCurrent | The fund is available only to certain fee-based accounts offered by Fidelity. Retirement plans, plan sponsors and/or participants pay a wrap fee that covers investment advisory and administrative services. | ||||
Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: |
||||
Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | Sell All Shares |
||||
Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies | ||||
Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock |
|
||||
Risk [Heading] | rr_RiskHeading | Principal Investment 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. You could lose money by investing in the fund. |
||||
Risk Lose Money [Text] | rr_RiskLoseMoney | You could lose money by investing in the fund. | ||||
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 | ||||
Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | Performance history will be available for the fund after the fund has been in operation for one calendar year. |
||||
Performance One Year or Less [Text] | rr_PerformanceOneYearOrLess | Performance history will be available for the fund after the fund has been in operation for one calendar year. | ||||
NF_04.30 Fidelity Flex Mid Cap Index Fund & Fidelity Flex Small Cap Index Fund combo PRO-01 | Fidelity Flex℠ Small Cap Index Fund | FIdelity Flex Small Cap Index Fund-Default | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Management fee | rr_ManagementFeesOverAssets | none | ||||
Distribution and/or Service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | none | ||||
Other expenses | rr_OtherExpensesOverAssets | none | [1] | |||
Total annual operating expenses | rr_ExpensesOverAssets | none | [2] | |||
1 year | rr_ExpenseExampleYear01 | none | ||||
3 years | rr_ExpenseExampleYear03 | none | ||||
|
NF_07.31 Fidelity Flex Real Estate Index Fund PRO-01 | Fidelity Flex℠ Real Estate Index Fund | |||||||||||||||||||
Fund Summary Fund: | |||||||||||||||||||
Investment Objective | |||||||||||||||||||
The fund seeks to provide investment results that correspond to the total return of equity REITs and other real estate-related investments. | |||||||||||||||||||
Fee Table | |||||||||||||||||||
The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. | |||||||||||||||||||
Shareholder fees | |||||||||||||||||||
| |||||||||||||||||||
Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment) | |||||||||||||||||||
| |||||||||||||||||||
This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: | |||||||||||||||||||
Sell All Shares | |||||||||||||||||||
| |||||||||||||||||||
Portfolio Turnover | |||||||||||||||||||
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 operating expenses or in the example, affect the fund's performance. | |||||||||||||||||||
Principal Investment Strategies | |||||||||||||||||||
| |||||||||||||||||||
Principal Investment Risks | |||||||||||||||||||
In addition, the fund is considered non-diversified and can invest a greater portion of assets in securities of a smaller number of individual issuers than a diversified fund. As a result, changes in the market value of a single investment could cause greater fluctuations in share price than would occur in a more diversified fund. 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. You could lose money by investing in the fund. | |||||||||||||||||||
Performance | |||||||||||||||||||
Performance history will be available for the fund after the fund has been in operation for one calendar year. |
Label | Element | Value | ||||
---|---|---|---|---|---|---|
Risk/Return: | rr_RiskReturnAbstract | |||||
Registrant Name | dei_EntityRegistrantName | FIDELITY SALEM STREET TRUST | ||||
Prospectus Date | rr_ProspectusDate | Feb. 17, 2017 | ||||
NF_07.31 Fidelity Flex Real Estate Index Fund PRO-01 | Fidelity Flex℠ Real Estate Index Fund | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Risk/Return [Heading] | rr_RiskReturnHeading | Fund Summary Fund: |
||||
Objective [Heading] | rr_ObjectiveHeading | Investment Objective | ||||
Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The fund seeks to provide investment results that correspond to the total return of equity REITs and other real estate-related investments. |
||||
Expense [Heading] | rr_ExpenseHeading | Fee Table | ||||
Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. |
||||
Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | Shareholder fees |
||||
(fees paid directly from your investment) | rr_ShareholderFeeOther | none | ||||
Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Operating Expenses (expenses that you pay each year as a % 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 operating expenses or in the example, affect the fund's performance. |
||||
Other Expenses, New Fund, Based on Estimates [Text] | rr_OtherExpensesNewFundBasedOnEstimates | Based on estimated amounts for the current fiscal year. | ||||
Expenses Restated to Reflect Current [Text] | rr_ExpensesRestatedToReflectCurrent | The fund is available only to certain fee-based accounts offered by Fidelity. Retirement plans, plan sponsors and/or participants pay a wrap fee that covers investment advisory and administrative services. | ||||
Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: |
||||
Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | Sell All Shares |
||||
Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies | ||||
Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock |
|
||||
Risk [Heading] | rr_RiskHeading | Principal Investment Risks | ||||
Risk Narrative [Text Block] | rr_RiskNarrativeTextBlock |
In addition, the fund is considered non-diversified and can invest a greater portion of assets in securities of a smaller number of individual issuers than a diversified fund. As a result, changes in the market value of a single investment could cause greater fluctuations in share price than would occur in a more diversified fund. 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. You could lose money by investing in the fund. |
||||
Risk Lose Money [Text] | rr_RiskLoseMoney | You could lose money by investing in the fund. | ||||
Risk Nondiversified Status [Text] | rr_RiskNondiversifiedStatus | In addition, the fund is considered non-diversified and can invest a greater portion of assets in securities of a smaller number of individual issuers than a diversified fund. As a result, changes in the market value of a single investment could cause greater fluctuations in share price than would occur in a more diversified fund. | ||||
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 | ||||
Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | Performance history will be available for the fund after the fund has been in operation for one calendar year. |
||||
Performance One Year or Less [Text] | rr_PerformanceOneYearOrLess | Performance history will be available for the fund after the fund has been in operation for one calendar year. | ||||
NF_07.31 Fidelity Flex Real Estate Index Fund PRO-01 | Fidelity Flex℠ Real Estate Index Fund | Fidelity Flex Real Estate Index Fund-Default | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Management fee | rr_ManagementFeesOverAssets | none | ||||
Distribution and/or Service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | none | ||||
Other expenses | rr_OtherExpensesOverAssets | none | [1] | |||
Total annual operating expenses | rr_ExpensesOverAssets | none | [2] | |||
1 year | rr_ExpenseExampleYear01 | none | ||||
3 years | rr_ExpenseExampleYear03 | none | ||||
|
NF_08.31 Fidelity Flex Short-Term Bond Fund PRO-01 | Fidelity Flex℠ Short-Term Bond Fund | |||||||||||||||||||
Fund Summary Fund: | |||||||||||||||||||
Investment Objective | |||||||||||||||||||
The fund seeks to obtain a high level of current income consistent with preservation of capital. | |||||||||||||||||||
Fee Table | |||||||||||||||||||
The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. | |||||||||||||||||||
Shareholder fees | |||||||||||||||||||
| |||||||||||||||||||
Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment) | |||||||||||||||||||
| |||||||||||||||||||
This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: | |||||||||||||||||||
Sell All Shares | |||||||||||||||||||
| |||||||||||||||||||
Portfolio Turnover | |||||||||||||||||||
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 operating expenses or in the example, affect the fund's performance. | |||||||||||||||||||
Principal Investment Strategies | |||||||||||||||||||
| |||||||||||||||||||
Principal Investment Risks | |||||||||||||||||||
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. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund. | |||||||||||||||||||
Performance | |||||||||||||||||||
Performance history will be available for the fund after the fund has been in operation for one calendar year. |
Label | Element | Value | ||||
---|---|---|---|---|---|---|
Risk/Return: | rr_RiskReturnAbstract | |||||
Registrant Name | dei_EntityRegistrantName | FIDELITY SALEM STREET TRUST | ||||
Prospectus Date | rr_ProspectusDate | Feb. 17, 2017 | ||||
NF_08.31 Fidelity Flex Short-Term Bond Fund PRO-01 | Fidelity Flex℠ Short-Term Bond Fund | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Risk/Return [Heading] | rr_RiskReturnHeading | Fund Summary Fund: |
||||
Objective [Heading] | rr_ObjectiveHeading | Investment Objective | ||||
Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The fund seeks to obtain a high level of current income consistent with preservation of capital. |
||||
Expense [Heading] | rr_ExpenseHeading | Fee Table | ||||
Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. |
||||
Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | Shareholder fees |
||||
(fees paid directly from your investment) | rr_ShareholderFeeOther | none | ||||
Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Operating Expenses (expenses that you pay each year as a % 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 operating expenses or in the example, affect the fund's performance. |
||||
Expenses Restated to Reflect Current [Text] | rr_ExpensesRestatedToReflectCurrent | The fund is available only to certain fee-based accounts offered by Fidelity. Retirement plan, plan sponsors and/or plan participants pay a wrap fee that covers investment advisory and administrative services. | ||||
Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: |
||||
Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | Sell All Shares |
||||
Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies | ||||
Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock |
|
||||
Risk [Heading] | rr_RiskHeading | Principal Investment 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. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund. |
||||
Risk Lose Money [Text] | rr_RiskLoseMoney | You could lose money by investing in the fund. | ||||
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 | ||||
Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | Performance history will be available for the fund after the fund has been in operation for one calendar year. |
||||
Performance One Year or Less [Text] | rr_PerformanceOneYearOrLess | Performance history will be available for the fund after the fund has been in operation for one calendar year. | ||||
NF_08.31 Fidelity Flex Short-Term Bond Fund PRO-01 | Fidelity Flex℠ Short-Term Bond Fund | Fidelity Flex Short-Term Bond Fund-Default | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Management fee | rr_ManagementFeesOverAssets | none | ||||
Distribution and/or Service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | none | ||||
Other expenses | rr_OtherExpensesOverAssets | none | [1] | |||
Total annual operating expenses | rr_ExpensesOverAssets | none | [2] | |||
1 year | rr_ExpenseExampleYear01 | none | ||||
3 years | rr_ExpenseExampleYear03 | none | ||||
|
NF_02.28 Fidelity Flex Short-Term Treasury Bond Index Fund PRO-01 | Fidelity Flex℠ Short-Term Treasury Bond Index Fund | |||||||||||||||||||
Fund Summary Fund: | |||||||||||||||||||
Investment Objective | |||||||||||||||||||
The fund seeks a high level of current income in a manner consistent with preservation of capital. | |||||||||||||||||||
Fee Table | |||||||||||||||||||
The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. | |||||||||||||||||||
Shareholder fees | |||||||||||||||||||
| |||||||||||||||||||
Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment) | |||||||||||||||||||
| |||||||||||||||||||
This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: | |||||||||||||||||||
Sell All Shares | |||||||||||||||||||
| |||||||||||||||||||
Portfolio Turnover | |||||||||||||||||||
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 operating expenses or in the example, affect the fund's performance. | |||||||||||||||||||
Principal Investment Strategies | |||||||||||||||||||
| |||||||||||||||||||
Principal Investment Risks | |||||||||||||||||||
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. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund. | |||||||||||||||||||
Performance | |||||||||||||||||||
Performance history will be available for the fund after the fund has been in operation for one calendar year. |
Label | Element | Value | ||||
---|---|---|---|---|---|---|
Risk/Return: | rr_RiskReturnAbstract | |||||
Registrant Name | dei_EntityRegistrantName | FIDELITY SALEM STREET TRUST | ||||
Prospectus Date | rr_ProspectusDate | Feb. 17, 2017 | ||||
NF_02.28 Fidelity Flex Short-Term Treasury Bond Index Fund PRO-01 | Fidelity Flex℠ Short-Term Treasury Bond Index Fund | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Risk/Return [Heading] | rr_RiskReturnHeading | Fund Summary Fund: |
||||
Objective [Heading] | rr_ObjectiveHeading | Investment Objective | ||||
Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The fund seeks a high level of current income in a manner consistent with preservation of capital. |
||||
Expense [Heading] | rr_ExpenseHeading | Fee Table | ||||
Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. |
||||
Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | Shareholder fees |
||||
(fees paid directly from your investment) | rr_ShareholderFeeOther | none | ||||
Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Operating Expenses (expenses that you pay each year as a % 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 operating expenses or in the example, affect the fund's performance. |
||||
Other Expenses, New Fund, Based on Estimates [Text] | rr_OtherExpensesNewFundBasedOnEstimates | Based on estimated amounts for the current fiscal year. | ||||
Expenses Restated to Reflect Current [Text] | rr_ExpensesRestatedToReflectCurrent | The fund is available only to certain fee-based accounts offered by Fidelity. Retirement plan, plan sponsors and/or plan participants pay a wrap fee that covers investment advisory and administrative services. | ||||
Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: |
||||
Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | Sell All Shares |
||||
Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies | ||||
Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock |
|
||||
Risk [Heading] | rr_RiskHeading | Principal Investment 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. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund. |
||||
Risk Lose Money [Text] | rr_RiskLoseMoney | You could lose money by investing in the fund. | ||||
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 | ||||
Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | Performance history will be available for the fund after the fund has been in operation for one calendar year. |
||||
Performance One Year or Less [Text] | rr_PerformanceOneYearOrLess | Performance history will be available for the fund after the fund has been in operation for one calendar year. | ||||
NF_02.28 Fidelity Flex Short-Term Treasury Bond Index Fund PRO-01 | Fidelity Flex℠ Short-Term Treasury Bond Index Fund | Fidelity Flex Short-Term Treasury Bond Index Fund- Default | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Management fee | rr_ManagementFeesOverAssets | none | ||||
Distribution and/or Service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | none | ||||
Other expenses | rr_OtherExpensesOverAssets | none | [1] | |||
Total annual operating expenses | rr_ExpensesOverAssets | none | [2] | |||
1 year | rr_ExpenseExampleYear01 | none | ||||
3 years | rr_ExpenseExampleYear03 | none | ||||
|
NF_08.31 Fidelity Flex U.S. Bond Index Fund PRO-01 | Fidelity Flex℠ U.S. Bond Index Fund | |||||||||||||||||||
Fund Summary Fund: | |||||||||||||||||||
Investment Objective | |||||||||||||||||||
The fund seeks to provide investment results that correspond to the aggregate price and interest performance of the debt securities in the Bloomberg Barclays U.S. Aggregate Bond Index. | |||||||||||||||||||
Fee Table | |||||||||||||||||||
The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. | |||||||||||||||||||
Shareholder fees | |||||||||||||||||||
| |||||||||||||||||||
Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment) | |||||||||||||||||||
| |||||||||||||||||||
This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: | |||||||||||||||||||
Sell All Shares | |||||||||||||||||||
| |||||||||||||||||||
Portfolio Turnover | |||||||||||||||||||
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 operating expenses or in the example, affect the fund's performance. | |||||||||||||||||||
Principal Investment Strategies | |||||||||||||||||||
| |||||||||||||||||||
Principal Investment Risks | |||||||||||||||||||
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. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund. | |||||||||||||||||||
Performance | |||||||||||||||||||
Performance history will be available for the fund after the fund has been in operation for one calendar year. |
Label | Element | Value | ||||
---|---|---|---|---|---|---|
Risk/Return: | rr_RiskReturnAbstract | |||||
Registrant Name | dei_EntityRegistrantName | FIDELITY SALEM STREET TRUST | ||||
Prospectus Date | rr_ProspectusDate | Feb. 17, 2017 | ||||
NF_08.31 Fidelity Flex U.S. Bond Index Fund PRO-01 | Fidelity Flex℠ U.S. Bond Index Fund | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Risk/Return [Heading] | rr_RiskReturnHeading | Fund Summary Fund: |
||||
Objective [Heading] | rr_ObjectiveHeading | Investment Objective | ||||
Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The fund seeks to provide investment results that correspond to the aggregate price and interest performance of the debt securities in the Bloomberg Barclays U.S. Aggregate Bond Index. |
||||
Expense [Heading] | rr_ExpenseHeading | Fee Table | ||||
Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. |
||||
Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | Shareholder fees |
||||
(fees paid directly from your investment) | rr_ShareholderFeeOther | none | ||||
Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Operating Expenses (expenses that you pay each year as a % 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 operating expenses or in the example, affect the fund's performance. |
||||
Expenses Restated to Reflect Current [Text] | rr_ExpensesRestatedToReflectCurrent | The fund is available only to certain fee-based accounts offered by Fidelity. Retirement plan, plan sponsors and/or plan participants pay a wrap fee that covers investment advisory and administrative services. | ||||
Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. This example does not include any fees paid at the fee-based account or plan level. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: |
||||
Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | Sell All Shares |
||||
Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies | ||||
Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock |
|
||||
Risk [Heading] | rr_RiskHeading | Principal Investment 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. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund. |
||||
Risk Lose Money [Text] | rr_RiskLoseMoney | You could lose money by investing in the fund. | ||||
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 | ||||
Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | Performance history will be available for the fund after the fund has been in operation for one calendar year. |
||||
Performance One Year or Less [Text] | rr_PerformanceOneYearOrLess | Performance history will be available for the fund after the fund has been in operation for one calendar year. | ||||
NF_08.31 Fidelity Flex U.S. Bond Index Fund PRO-01 | Fidelity Flex℠ U.S. Bond Index Fund | Fidelity Flex U.S. Bond Index Fund-Default | ||||||
Risk/Return: | rr_RiskReturnAbstract | |||||
Management fee | rr_ManagementFeesOverAssets | none | ||||
Distribution and/or Service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | none | ||||
Other expenses | rr_OtherExpensesOverAssets | none | [1] | |||
Total annual operating expenses | rr_ExpensesOverAssets | none | [2] | |||
1 year | rr_ExpenseExampleYear01 | none | ||||
3 years | rr_ExpenseExampleYear03 | none | ||||
|
Label | Element | Value |
---|---|---|
Risk/Return: | rr_RiskReturnAbstract | |
Registrant Name | dei_EntityRegistrantName | FIDELITY SALEM STREET TRUST |
Prospectus Date | rr_ProspectusDate | Feb. 17, 2017 |
Document Creation Date | dei_DocumentCreationDate | Feb. 17, 2017 |
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