485BPOS

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM N-1A
REGISTRATION STATEMENT (No. 002-92661)
		UNDER THE SECURITIES ACT OF 1933	[X]
		Pre-Effective Amendment No. ____	[ ]
		Post-Effective Amendment No. 92	[X]
and
REGISTRATION STATEMENT (No. 811-04085)
		UNDER THE INVESTMENT COMPANY ACT OF 1940	[X]
		Amendment No. 92	[X]
Fidelity Income Fund
(Exact Name of Registrant as Specified in Charter)
82 Devonshire St., Boston, Massachusetts 02109
(Address Of Principal Executive Offices) (Zip Code)
Registrant's Telephone Number: 617-563-7000
Scott C. Goebel, Secretary
82 Devonshire Street
Boston, Massachusetts 02109
(Name and Address of Agent for Service)
It is proposed that this filing will become effective
	(X)	immediately upon filing pursuant to paragraph (b).
	( )	on ( ) pursuant to paragraph (b) at 5:30 p.m. Eastern Time.
	( )	60 days after filing pursuant to paragraph (a)(1) at 5:30 p.m. Eastern Time.
	( )	on ( ) pursuant to paragraph (a)(1) of Rule 485 at 5:30 p.m. Eastern Time.
	( )	75 days after filing pursuant to paragraph (a)(2) at 5:30 p.m. Eastern Time.
	( )	on ( ) pursuant to paragraph (a)(2) of Rule 485 at 5:30 p.m. Eastern Time.
If appropriate, check the following box:
	( )	this post-effective amendment designates a new effective date for a previously filed post-effective amendment.

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. 92 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 19th day of October 2012.

	Fidelity Income Fund
	By	/s/John R. Hebble
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||		John R. Hebble, President

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)		(Title)	(Date)
/s/John R. Hebble		President and Treasurer	October 19, 2012
John R. Hebble		(Principal Executive Officer)
/s/Christine Reynolds		Chief Financial Officer	October 19, 2012
Christine Reynolds		(Principal Financial Officer)
/s/Abigail P. Johnson		Trustee	October 19, 2012
Abigail P. Johnson
/s/James C. Curvey	*	Trustee	October 19, 2012
James C. Curvey
/s/Albert R. Gamper	*	Trustee	October 19, 2012
Albert R. Gamper
/s/Robert F. Gartland	*	Trustee	October 19, 2012
Robert F. Gartland
/s/Arthur E. Johnson	*	Trustee	October 19, 2012
Arthur E. Johnson
/s/Michael E. Kenneally	*	Trustee	October 19, 2012
Michael E. Kenneally
/s/James H. Keyes	*	Trustee	October 19, 2012
James H. Keyes
/s/Marie L. Knowles	*	Trustee	October 19, 2012
Marie L. Knowles
/s/Kenneth L. Wolfe	*	Trustee	October 19, 2012
Kenneth L. Wolfe

*	By:	/s/Joseph R. Fleming
		Joseph R. Fleming, pursuant to a power of attorney dated February 1, 2011 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 Court Street Trust Fidelity Court Street Trust II Fidelity Fixed-Income Trust Fidelity Garrison Street Trust Fidelity Hereford Street Trust Fidelity Income Fund   Fidelity Massachusetts Municipal 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 Phillips Street Trust Fidelity Revere 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 investment company for which Fidelity Management & Research Company ("FMR") or an affiliate acts as investment adviser and 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, Joseph R. Fleming, John V. O'Hanlon, Robert W. Helm 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 February 1, 2011.

WITNESS our hands on this first day of February 1, 2011.

/s/James C. Curvey	/s/Michael E. Kenneally
James C. Curvey	Michael E. Kenneally
/s/Albert R. Gamper, Jr.	/s/James H. Keyes
Albert R. Gamper, Jr.	James H. Keyes
/s/Robert F. Gartland	/s/Marie L. Knowles
Robert F. Gartland	Marie L. Knowles
/s/Arthur E. Johnson	/s/Kenneth L. Wolfe
Arthur E. Johnson	Kenneth L. Wolfe

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Inst | Fidelity Income Replacement 2022 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2022 Fund^SM/Fidelity Advisor Income Replacement 2022 Fund^SM Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 43% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

43.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2022.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	37.0%
International Equity Fund	4.2%
Bond Funds
Investment-Grade Bond Funds	35.0%
High Yield Bond Funds	3.1%
Short-Term Funds
Short-Term Funds	20.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	12.11%	June 30, 2009
Lowest Quarter Return	-12.77%	December 31, 2008
Year-to-Date Return	5.16%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Inst | Fidelity Income Replacement 2022 Fund | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.57%

Total annual operating expenses

rr_ExpensesOverAssets

0.57%

^[1]

1 year

rr_ExpenseExampleYear01

58

3 years

rr_ExpenseExampleYear03

183

5 years

rr_ExpenseExampleYear05

318

10 years

rr_ExpenseExampleYear10

714

2008

rr_AnnualReturn2008

(23.02%)

2009

rr_AnnualReturn2009

23.12%

2010

rr_AnnualReturn2010

11.26%

2011

rr_AnnualReturn2011

0.36%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.16%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.11%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(12.77%)

Inst | Fidelity Income Replacement 2022 Fund | Return Before Taxes | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

0.36%

Life of class

rr_AverageAnnualReturnSinceInception

1.99%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2022 Fund | Return After Taxes on Distributions | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(0.32%)

Life of class

rr_AverageAnnualReturnSinceInception

1.05%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2022 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

0.33%

Life of class

rr_AverageAnnualReturnSinceInception

1.18%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2022 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

A T C | Fidelity Income Replacement 2036 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2036 Fund^SM/Fidelity Advisor Income Replacement 2036 Fund^SM A, T, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 62% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

62.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2036.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	47.8%
International Equity Fund	10.0%
Bond Funds
Investment-Grade Bond Funds	26.8%
High Yield Bond Funds	5.5%
Short-Term Funds
Short-Term Funds	9.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	14.64%	June 30, 2009
Lowest Quarter Return	-15.69%	December 31, 2008
Year-to-Date Return	6.12%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

A T C | Fidelity Income Replacement 2036 Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.65%

Total annual operating expenses

rr_ExpensesOverAssets

0.90%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

662

3 years

rr_ExpenseExampleYear03

845

5 years

rr_ExpenseExampleYear05

1,045

10 years

rr_ExpenseExampleYear10

1,619

1 year

rr_ExpenseExampleNoRedemptionYear01

662

3 years

rr_ExpenseExampleNoRedemptionYear03

845

5 years

rr_ExpenseExampleNoRedemptionYear05

1,045

10 years

rr_ExpenseExampleNoRedemptionYear10

1,619

2008

rr_AnnualReturn2008

(28.63%)

2009

rr_AnnualReturn2009

26.70%

2010

rr_AnnualReturn2010

12.65%

2011

rr_AnnualReturn2011

(1.70%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.12%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

14.64%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(15.69%)

A T C | Fidelity Income Replacement 2036 Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.50%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.65%

Total annual operating expenses

rr_ExpensesOverAssets

1.15%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

463

3 years

rr_ExpenseExampleYear03

703

5 years

rr_ExpenseExampleYear05

961

10 years

rr_ExpenseExampleYear10

1,699

1 year

rr_ExpenseExampleNoRedemptionYear01

463

3 years

rr_ExpenseExampleNoRedemptionYear03

703

5 years

rr_ExpenseExampleNoRedemptionYear05

961

10 years

rr_ExpenseExampleNoRedemptionYear10

1,699

A T C | Fidelity Income Replacement 2036 Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[3]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.65%

Total annual operating expenses

rr_ExpensesOverAssets

1.65%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

On Class C shares redeemed less than one year after purchase.

1 year

rr_ExpenseExampleYear01

268

3 years

rr_ExpenseExampleYear03

520

5 years

rr_ExpenseExampleYear05

897

10 years

rr_ExpenseExampleYear10

1,955

1 year

rr_ExpenseExampleNoRedemptionYear01

168

3 years

rr_ExpenseExampleNoRedemptionYear03

520

5 years

rr_ExpenseExampleNoRedemptionYear05

897

10 years

rr_ExpenseExampleNoRedemptionYear10

1,955

A T C | Fidelity Income Replacement 2036 Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(7.35%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.56%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2036 Fund | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(5.37%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.26%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2036 Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(3.40%)

Life of class

rr_AverageAnnualReturnSinceInception

0.06%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2036 Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(7.85%)

Life of class

rr_AverageAnnualReturnSinceInception

(1.33%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2036 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(4.66%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.87%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2036 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[3] On Class C shares redeemed less than one year after purchase.

[4] From August 30, 2007.

XML

A T C | Fidelity Income Replacement 2022 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2022 Fund^SM/Fidelity Advisor Income Replacement 2022 Fund^SM A, T, C

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees A T C Fidelity Income Replacement 2022 Fund	Class A		Class T		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	5.75%		3.50%		none
Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)	none	[1]	none	[1]	1.00%	[2]

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses A T C Fidelity Income Replacement 2022 Fund		Class A	Class T	Class C
Management fee		none	none	none
Distribution and/or Service (12b-1) fees		0.25%	0.50%	1.00%
Other expenses		none	none	none
Acquired fund fees and expenses		0.57%	0.57%	0.57%
Total annual operating expenses	[1]	0.82%	1.07%	1.57%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Sell All Shares

Expense Example A T C Fidelity Income Replacement 2022 Fund (USD $)	Class A	Class T	Class C
1 year	654	455	260
3 years	822	678	496
5 years	1,004	919	855
10 years	1,530	1,610	1,867

Hold Shares

Expense Example, No Redemption A T C Fidelity Income Replacement 2022 Fund (USD $)	Class A	Class T	Class C
1 year	654	455	160
3 years	822	678	496
5 years	1,004	919	855
10 years	1,530	1,610	1,867

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 43% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2022.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	37.0%
International Equity Fund	4.2%
Bond Funds
Investment-Grade Bond Funds	35.0%
High Yield Bond Funds	3.1%
Short-Term Funds
Short-Term Funds	20.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	12.04%	June 30, 2009
Lowest Quarter Return	-12.82%	December 31, 2008
Year-to-Date Return	5.03%	June 30, 2012

Average Annual Returns

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns A T C Fidelity Income Replacement 2022 Fund	Past 1 year	Life of class		Inception Date
Class A Return Before Taxes	(5.64%)	0.36%	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions	(6.21%)	(0.48%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions and Sale of Fund Shares	(3.58%)	(0.15%)	[1]	Aug. 30, 2007
Class T Return Before Taxes	(3.61%)	0.66%	[1]	Aug. 30, 2007
Class C Return Before Taxes	(1.62%)	0.98%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] On Class C shares redeemed less than one year after purchase.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Retail | Fidelity Income Replacement 2036 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2036 Fund^SM/Fidelity Income Replacement 2036 Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 62% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

62.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2036.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	47.8%
International Equity Fund	10.0%
Bond Funds
Investment-Grade Bond Funds	26.8%
High Yield Bond Funds	5.5%
Short-Term Funds
Short-Term Funds	9.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	14.68%	June 30, 2009
Lowest Quarter Return	-15.63%	December 31, 2008
Year-to-Date Return	6.23%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Retail | Fidelity Income Replacement 2036 Fund | Class: Fidelity Income Replacement 2036 Fund

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.65%

Total annual operating expenses

rr_ExpensesOverAssets

0.65%

^[1]

1 year

rr_ExpenseExampleYear01

66

3 years

rr_ExpenseExampleYear03

208

5 years

rr_ExpenseExampleYear05

362

10 years

rr_ExpenseExampleYear10

810

2008

rr_AnnualReturn2008

(28.44%)

2009

rr_AnnualReturn2009

27.04%

2010

rr_AnnualReturn2010

12.92%

2011

rr_AnnualReturn2011

(1.45%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.23%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

14.68%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(15.63%)

Retail | Fidelity Income Replacement 2036 Fund | Return Before Taxes | Class: Fidelity Income Replacement 2036 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2036 Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(1.45%)

Life of class

rr_AverageAnnualReturnSinceInception

1.07%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2036 Fund | Return After Taxes on Distributions | Class: Fidelity Income Replacement 2036 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2036 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(2.06%)

Life of class

rr_AverageAnnualReturnSinceInception

0.19%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2036 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class: Fidelity Income Replacement 2036 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2036 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.81%)

Life of class

rr_AverageAnnualReturnSinceInception

0.45%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2036 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

A T C | Fidelity Income Replacement 2028 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2028 Fund^SM/Fidelity Advisor Income Replacement 2028 Fund^SM A, T, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 46% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

46.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2028.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	44.1%
International Equity Fund	6.8%
Bond Funds
Investment-Grade Bond Funds	29.9%
High Yield Bond Funds	4.5%
Short-Term Funds
Short-Term Funds	14.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	13.21%	June 30, 2009
Lowest Quarter Return	-14.10%	December 31, 2008
Year-to-Date Return	5.67%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

A T C | Fidelity Income Replacement 2028 Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.61%

Total annual operating expenses

rr_ExpensesOverAssets

0.86%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

658

3 years

rr_ExpenseExampleYear03

834

5 years

rr_ExpenseExampleYear05

1,024

10 years

rr_ExpenseExampleYear10

1,575

1 year

rr_ExpenseExampleNoRedemptionYear01

658

3 years

rr_ExpenseExampleNoRedemptionYear03

834

5 years

rr_ExpenseExampleNoRedemptionYear05

1,024

10 years

rr_ExpenseExampleNoRedemptionYear10

1,575

2008

rr_AnnualReturn2008

(25.61%)

2009

rr_AnnualReturn2009

24.55%

2010

rr_AnnualReturn2010

11.89%

2011

rr_AnnualReturn2011

(0.85%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.67%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.21%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(14.10%)

A T C | Fidelity Income Replacement 2028 Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.50%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.61%

Total annual operating expenses

rr_ExpensesOverAssets

1.11%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

459

3 years

rr_ExpenseExampleYear03

691

5 years

rr_ExpenseExampleYear05

940

10 years

rr_ExpenseExampleYear10

1,654

1 year

rr_ExpenseExampleNoRedemptionYear01

459

3 years

rr_ExpenseExampleNoRedemptionYear03

691

5 years

rr_ExpenseExampleNoRedemptionYear05

940

10 years

rr_ExpenseExampleNoRedemptionYear10

1,654

A T C | Fidelity Income Replacement 2028 Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[3]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.61%

Total annual operating expenses

rr_ExpensesOverAssets

1.61%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

On Class C shares redeemed less than one year after purchase.

1 year

rr_ExpenseExampleYear01

264

3 years

rr_ExpenseExampleYear03

508

5 years

rr_ExpenseExampleYear05

876

10 years

rr_ExpenseExampleYear10

1,911

1 year

rr_ExpenseExampleNoRedemptionYear01

164

3 years

rr_ExpenseExampleNoRedemptionYear03

508

5 years

rr_ExpenseExampleNoRedemptionYear05

876

10 years

rr_ExpenseExampleNoRedemptionYear10

1,911

A T C | Fidelity Income Replacement 2028 Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(6.55%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.04%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2028 Fund | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(4.53%)

Life of class

rr_AverageAnnualReturnSinceInception

0.26%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2028 Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(2.53%)

Life of class

rr_AverageAnnualReturnSinceInception

0.58%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2028 Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(7.08%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.79%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2028 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(4.15%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.42%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2028 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[3] On Class C shares redeemed less than one year after purchase.

[4] From August 30, 2007.

XML

A T C | Fidelity Income Replacement 2038 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2038 Fund^SM/Fidelity Advisor Income Replacement 2038 Fund^SM A, T, C

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees A T C Fidelity Income Replacement 2038 Fund	Class A		Class T		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	5.75%		3.50%		none
Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)	none	[1]	none	[1]	1.00%	[2]

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses A T C Fidelity Income Replacement 2038 Fund		Class A	Class T	Class C
Management fee		none	none	none
Distribution and/or Service (12b-1) fees		0.25%	0.50%	1.00%
Other expenses		none	none	none
Acquired fund fees and expenses		0.66%	0.66%	0.66%
Total annual operating expenses	[1]	0.91%	1.16%	1.66%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Sell All Shares

Expense Example A T C Fidelity Income Replacement 2038 Fund (USD $)	Class A	Class T	Class C
1 year	663	464	269
3 years	848	706	523
5 years	1,050	966	902
10 years	1,630	1,710	1,965

Hold Shares

Expense Example, No Redemption A T C Fidelity Income Replacement 2038 Fund (USD $)	Class A	Class T	Class C
1 year	663	464	169
3 years	848	706	523
5 years	1,050	966	902
10 years	1,630	1,710	1,965

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 57% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2038.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	48.7%
International Equity Fund	10.9%
Bond Funds
Investment-Grade Bond Funds	26.2%
High Yield Bond Funds	5.8%
Short-Term Funds
Short-Term Funds	8.4%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	15.12%	June 30, 2009
Lowest Quarter Return	-16.23%	December 31, 2008
Year-to-Date Return	6.24%	June 30, 2012

Average Annual Returns

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns A T C Fidelity Income Replacement 2038 Fund	Past 1 year	Life of class		Inception Date
Class A Return Before Taxes	(7.59%)	(1.63%)	[1]	Dec. 31, 2007
Class A Return After Taxes on Distributions	(8.10%)	(2.28%)	[1]	Dec. 31, 2007
Class A Return After Taxes on Distributions and Sale of Fund Shares	(4.80%)	(1.70%)	[1]	Dec. 31, 2007
Class T Return Before Taxes	(5.62%)	(1.29%)	[1]	Dec. 31, 2007
Class C Return Before Taxes	(3.63%)	(0.90%)	[1]	Dec. 31, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.64%)	[1]	Dec. 31, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] On Class C shares redeemed less than one year after purchase.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From December 31, 2007.

XML

A T C | Fidelity Income Replacement 2040 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2040 Fund^SM/Fidelity Advisor Income Replacement 2040 Fund^SM A, T, C

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees A T C Fidelity Income Replacement 2040 Fund	Class A		Class T		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	5.75%		3.50%		none
Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)	none	[1]	none	[1]	1.00%	[2]

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses A T C Fidelity Income Replacement 2040 Fund		Class A	Class T	Class C
Management fee		none	none	none
Distribution and/or Service (12b-1) fees		0.25%	0.50%	1.00%
Other expenses		none	none	none
Acquired fund fees and expenses		0.67%	0.67%	0.67%
Total annual operating expenses	[1]	0.92%	1.17%	1.67%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Sell All Shares

Expense Example A T C Fidelity Income Replacement 2040 Fund (USD $)	Class A	Class T	Class C
1 year	663	465	270
3 years	851	709	526
5 years	1,055	971	907
10 years	1,641	1,721	1,976

Hold Shares

Expense Example, No Redemption A T C Fidelity Income Replacement 2040 Fund (USD $)	Class A	Class T	Class C
1 year	663	465	170
3 years	851	709	526
5 years	1,055	971	907
10 years	1,641	1,721	1,976

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 63% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2040.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	49.9%
International Equity Fund	12.0%
Bond Funds
Investment-Grade Bond Funds	25.8%
High Yield Bond Funds	6.2%
Short-Term Funds
Short-Term Funds	6.1%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.
• "Value" Investing. "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	15.39%	June 30, 2009
Lowest Quarter Return	-16.50%	December 31, 2008
Year-to-Date Return	6.45%	June 30, 2012

Average Annual Returns

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns A T C Fidelity Income Replacement 2040 Fund	Past 1 year	Life of class		Inception Date
Class A Return Before Taxes	(7.80%)	(1.58%)	[1]	Dec. 31, 2007
Class A Return After Taxes on Distributions	(8.29%)	(2.22%)	[1]	Dec. 31, 2007
Class A Return After Taxes on Distributions and Sale of Fund Shares	(4.93%)	(1.66%)	[1]	Dec. 31, 2007
Class T Return Before Taxes	(5.83%)	(1.25%)	[1]	Dec. 31, 2007
Class C Return Before Taxes	(3.85%)	(0.86%)	[1]	Dec. 31, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.64%)	[1]	Dec. 31, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] On Class C shares redeemed less than one year after purchase.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From December 31, 2007.

XML

Retail | Fidelity Income Replacement 2038 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2038 Fund^SM/Fidelity Income Replacement 2038 Fund

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Retail Fidelity Income Replacement 2038 Fund Class: Fidelity Income Replacement 2038 Fund
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Retail Fidelity Income Replacement 2038 Fund Class: Fidelity Income Replacement 2038 Fund
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.66%
Total annual operating expenses	[1]	0.66%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Retail Fidelity Income Replacement 2038 Fund Class: Fidelity Income Replacement 2038 Fund
1 year	67
3 years	211
5 years	368
10 years	822

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 57% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2038.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	48.7%
International Equity Fund	10.9%
Bond Funds
Investment-Grade Bond Funds	26.2%
High Yield Bond Funds	5.8%
Short-Term Funds
Short-Term Funds	8.4%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	15.22%	June 30, 2009
Lowest Quarter Return	-16.16%	December 31, 2008
Year-to-Date Return	6.38%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Retail Fidelity Income Replacement 2038 Fund	Past 1 year	Life of class		Inception Date
Class: Fidelity Income Replacement 2038 Fund Return Before Taxes	(1.70%)	0.10%	[1]	Dec. 31, 2007
Class: Fidelity Income Replacement 2038 Fund Return After Taxes on Distributions	(2.33%)	(0.65%)	[1]	Dec. 31, 2007
Class: Fidelity Income Replacement 2038 Fund Return After Taxes on Distributions and Sale of Fund Shares	(0.97%)	(0.30%)	[1]	Dec. 31, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.64%)	[1]	Dec. 31, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From December 31, 2007.

XML

Inst | Fidelity Income Replacement 2026 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2026 Fund^SM/Fidelity Advisor Income Replacement 2026 Fund^SM Institutional

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Inst Fidelity Income Replacement 2026 Fund Institutional Class
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Inst Fidelity Income Replacement 2026 Fund Institutional Class
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.60%
Total annual operating expenses	[1]	0.60%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Inst Fidelity Income Replacement 2026 Fund Institutional Class
1 year	61
3 years	192
5 years	335
10 years	750

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 60% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2026.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	42.6%
International Equity Fund	6.0%
Bond Funds
Investment-Grade Bond Funds	31.2%
High Yield Bond Funds	4.2%
Short-Term Funds
Short-Term Funds	16.0%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	12.96%	June 30, 2009
Lowest Quarter Return	-13.72%	December 31, 2008
Year-to-Date Return	5.64%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Inst Fidelity Income Replacement 2026 Fund	Past 1 year	Life of class		Inception Date
Institutional Class Return Before Taxes	(0.34%)	1.70%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions	(0.99%)	0.80%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions and Sale of Fund Shares	(0.11%)	0.97%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

Going forward, the fund's performance will be compared to the Barclays^® U.S. Aggregate Bond Index, rather than the S&P 500^® Index. The Barclays U.S. Aggregate Bond Index more closely represents the fund's investment strategy, as fixed-income and short-term funds currently represent the majority of the fund's assets.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Retail | Fidelity Income Replacement 2030 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2030 Fund^SM/Fidelity Income Replacement 2030 Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 50% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

50.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2030.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	45.3%
International Equity Fund	7.5%
Bond Funds
Investment-Grade Bond Funds	29.1%
High Yield Bond Funds	4.8%
Short-Term Funds
Short-Term Funds	13.3%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	13.58%	June 30, 2009
Lowest Quarter Return	-14.37%	December 31, 2008
Year-to-Date Return	5.92%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Retail | Fidelity Income Replacement 2030 Fund | Class: Fidelity Income Replacement 2030 Fund

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.62%

Total annual operating expenses

rr_ExpensesOverAssets

0.62%

^[1]

1 year

rr_ExpenseExampleYear01

63

3 years

rr_ExpenseExampleYear03

199

5 years

rr_ExpenseExampleYear05

346

10 years

rr_ExpenseExampleYear10

774

2008

rr_AnnualReturn2008

(26.06%)

2009

rr_AnnualReturn2009

25.41%

2010

rr_AnnualReturn2010

12.37%

2011

rr_AnnualReturn2011

(0.79%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.92%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.58%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(14.37%)

Retail | Fidelity Income Replacement 2030 Fund | Return Before Taxes | Class: Fidelity Income Replacement 2030 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2030 Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(0.79%)

Life of class

rr_AverageAnnualReturnSinceInception

1.50%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2030 Fund | Return After Taxes on Distributions | Class: Fidelity Income Replacement 2030 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2030 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(1.43%)

Life of class

rr_AverageAnnualReturnSinceInception

0.66%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2030 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class: Fidelity Income Replacement 2030 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2030 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.40%)

Life of class

rr_AverageAnnualReturnSinceInception

0.84%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2030 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

A T C | Fidelity Income Replacement 2028 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2028 Fund^SM/Fidelity Advisor Income Replacement 2028 Fund^SM A, T, C

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees A T C Fidelity Income Replacement 2028 Fund	Class A		Class T		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	5.75%		3.50%		none
Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)	none	[1]	none	[1]	1.00%	[2]

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses A T C Fidelity Income Replacement 2028 Fund		Class A	Class T	Class C
Management fee		none	none	none
Distribution and/or Service (12b-1) fees		0.25%	0.50%	1.00%
Other expenses		none	none	none
Acquired fund fees and expenses		0.61%	0.61%	0.61%
Total annual operating expenses	[1]	0.86%	1.11%	1.61%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Sell All Shares

Expense Example A T C Fidelity Income Replacement 2028 Fund (USD $)	Class A	Class T	Class C
1 year	658	459	264
3 years	834	691	508
5 years	1,024	940	876
10 years	1,575	1,654	1,911

Hold Shares

Expense Example, No Redemption A T C Fidelity Income Replacement 2028 Fund (USD $)	Class A	Class T	Class C
1 year	658	459	164
3 years	834	691	508
5 years	1,024	940	876
10 years	1,575	1,654	1,911

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 46% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2028.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	44.1%
International Equity Fund	6.8%
Bond Funds
Investment-Grade Bond Funds	29.9%
High Yield Bond Funds	4.5%
Short-Term Funds
Short-Term Funds	14.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	13.21%	June 30, 2009
Lowest Quarter Return	-14.10%	December 31, 2008
Year-to-Date Return	5.67%	June 30, 2012

Average Annual Returns

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns A T C Fidelity Income Replacement 2028 Fund	Past 1 year	Life of class		Inception Date
Class A Return Before Taxes	(6.55%)	(0.04%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions	(7.08%)	(0.79%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions and Sale of Fund Shares	(4.15%)	(0.42%)	[1]	Aug. 30, 2007
Class T Return Before Taxes	(4.53%)	0.26%	[1]	Aug. 30, 2007
Class C Return Before Taxes	(2.53%)	0.58%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] On Class C shares redeemed less than one year after purchase.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Inst | Fidelity Income Replacement 2028 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2028 Fund^SM/Fidelity Advisor Income Replacement 2028 Fund^SM Institutional

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Inst Fidelity Income Replacement 2028 Fund Institutional Class
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Inst Fidelity Income Replacement 2028 Fund Institutional Class
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.61%
Total annual operating expenses	[1]	0.61%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Inst Fidelity Income Replacement 2028 Fund Institutional Class
1 year	62
3 years	195
5 years	340
10 years	762

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 46% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2028.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	44.1%
International Equity Fund	6.8%
Bond Funds
Investment-Grade Bond Funds	29.9%
High Yield Bond Funds	4.5%
Short-Term Funds
Short-Term Funds	14.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	13.28%	June 30, 2009
Lowest Quarter Return	-14.06%	December 31, 2008
Year-to-Date Return	5.78%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Inst Fidelity Income Replacement 2028 Fund	Past 1 year	Life of class		Inception Date
Institutional Class Return Before Taxes	(0.57%)	1.59%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions	(1.22%)	0.75%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions and Sale of Fund Shares	(0.25%)	0.90%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Retail | Fidelity Income Replacement 2040 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2040 Fund^SM/Fidelity Income Replacement 2040 Fund

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Retail Fidelity Income Replacement 2040 Fund Class: Fidelity Income Replacement 2040 Fund
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Retail Fidelity Income Replacement 2040 Fund Class: Fidelity Income Replacement 2040 Fund
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.67%
Total annual operating expenses	[1]	0.67%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Retail Fidelity Income Replacement 2040 Fund Class: Fidelity Income Replacement 2040 Fund
1 year	68
3 years	214
5 years	373
10 years	835

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 63% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2040.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	49.9%
International Equity Fund	12.0%
Bond Funds
Investment-Grade Bond Funds	25.8%
High Yield Bond Funds	6.2%
Short-Term Funds
Short-Term Funds	6.1%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.
• "Value" Investing. "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	15.49%	June 30, 2009
Lowest Quarter Return	-16.44%	December 31, 2008
Year-to-Date Return	6.58%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Retail Fidelity Income Replacement 2040 Fund	Past 1 year	Life of class		Inception Date
Class: Fidelity Income Replacement 2040 Fund Return Before Taxes	(1.93%)	0.13%	[1]	Dec. 31, 2007
Class: Fidelity Income Replacement 2040 Fund Return After Taxes on Distributions	(2.55%)	(0.61%)	[1]	Dec. 31, 2007
Class: Fidelity Income Replacement 2040 Fund Return After Taxes on Distributions and Sale of Fund Shares	(1.11%)	(0.27%)	[1]	Dec. 31, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.64%)	[1]	Dec. 31, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From December 31, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Inst | Fidelity Income Replacement 2042 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2042 Fund^SM/Fidelity Advisor Income Replacement 2042 Fund^SM Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 40% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

40.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2042.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	51.2%
International Equity Fund	12.8%
Bond Funds
Investment-Grade Bond Funds	25.6%
High Yield Bond Funds	6.5%
Short-Term Funds
Short-Term Funds	3.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.
• "Value" Investing. "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	15.68%	June 30, 2009
Lowest Quarter Return	-16.58%	December 31, 2008
Year-to-Date Return	6.69%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Inst | Fidelity Income Replacement 2042 Fund | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.68%

Total annual operating expenses

rr_ExpensesOverAssets

0.68%

^[1]

1 year

rr_ExpenseExampleYear01

69

3 years

rr_ExpenseExampleYear03

218

5 years

rr_ExpenseExampleYear05

379

10 years

rr_ExpenseExampleYear10

847

2008

rr_AnnualReturn2008

(30.02%)

2009

rr_AnnualReturn2009

28.91%

2010

rr_AnnualReturn2010

13.75%

2011

rr_AnnualReturn2011

(2.10%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.69%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

15.68%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(16.58%)

Inst | Fidelity Income Replacement 2042 Fund | Return Before Taxes | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(2.10%)

Life of class

rr_AverageAnnualReturnSinceInception

0.11%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Inst | Fidelity Income Replacement 2042 Fund | Return After Taxes on Distributions | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(2.72%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.62%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Inst | Fidelity Income Replacement 2042 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(1.22%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.28%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Inst | Fidelity Income Replacement 2042 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.64%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From December 31, 2007.

XML

Inst | Fidelity Income Replacement 2016 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2016 Fund^SM/Fidelity Advisor Income Replacement 2016 Fund^SM Institutional

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Inst Fidelity Income Replacement 2016 Fund Institutional Class
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Inst Fidelity Income Replacement 2016 Fund Institutional Class
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.46%
Total annual operating expenses	[1]	0.46%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Inst Fidelity Income Replacement 2016 Fund Institutional Class
1 year	47
3 years	148
5 years	258
10 years	579

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 44% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2016.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	17.2%
International Equity Fund	0.0%
Bond Funds
Investment-Grade Bond Funds	34.0%
High Yield Bond Funds	0.0%
Short-Term Funds
Short-Term Funds	48.8%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	9.48%	June 30, 2009
Lowest Quarter Return	-9.84%	December 31, 2008
Year-to-Date Return	3.34%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Inst Fidelity Income Replacement 2016 Fund	Past 1 year	Life of class		Inception Date
Institutional Class Return Before Taxes	2.15%	2.45%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions	1.39%	1.46%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions and Sale of Fund Shares	1.44%	1.52%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

A T C | Fidelity Income Replacement 2040 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2040 Fund^SM/Fidelity Advisor Income Replacement 2040 Fund^SM A, T, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 63% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

63.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2040.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	49.9%
International Equity Fund	12.0%
Bond Funds
Investment-Grade Bond Funds	25.8%
High Yield Bond Funds	6.2%
Short-Term Funds
Short-Term Funds	6.1%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.
• "Value" Investing. "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	15.39%	June 30, 2009
Lowest Quarter Return	-16.50%	December 31, 2008
Year-to-Date Return	6.45%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

A T C | Fidelity Income Replacement 2040 Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.67%

Total annual operating expenses

rr_ExpensesOverAssets

0.92%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

663

3 years

rr_ExpenseExampleYear03

851

5 years

rr_ExpenseExampleYear05

1,055

10 years

rr_ExpenseExampleYear10

1,641

1 year

rr_ExpenseExampleNoRedemptionYear01

663

3 years

rr_ExpenseExampleNoRedemptionYear03

851

5 years

rr_ExpenseExampleNoRedemptionYear05

1,055

10 years

rr_ExpenseExampleNoRedemptionYear10

1,641

2008

rr_AnnualReturn2008

(29.96%)

2009

rr_AnnualReturn2009

28.12%

2010

rr_AnnualReturn2010

13.39%

2011

rr_AnnualReturn2011

(2.17%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.45%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

15.39%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(16.50%)

A T C | Fidelity Income Replacement 2040 Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.50%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.67%

Total annual operating expenses

rr_ExpensesOverAssets

1.17%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

465

3 years

rr_ExpenseExampleYear03

709

5 years

rr_ExpenseExampleYear05

971

10 years

rr_ExpenseExampleYear10

1,721

1 year

rr_ExpenseExampleNoRedemptionYear01

465

3 years

rr_ExpenseExampleNoRedemptionYear03

709

5 years

rr_ExpenseExampleNoRedemptionYear05

971

10 years

rr_ExpenseExampleNoRedemptionYear10

1,721

A T C | Fidelity Income Replacement 2040 Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[3]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.67%

Total annual operating expenses

rr_ExpensesOverAssets

1.67%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

On Class C shares redeemed less than one year after purchase.

1 year

rr_ExpenseExampleYear01

270

3 years

rr_ExpenseExampleYear03

526

5 years

rr_ExpenseExampleYear05

907

10 years

rr_ExpenseExampleYear10

1,976

1 year

rr_ExpenseExampleNoRedemptionYear01

170

3 years

rr_ExpenseExampleNoRedemptionYear03

526

5 years

rr_ExpenseExampleNoRedemptionYear05

907

10 years

rr_ExpenseExampleNoRedemptionYear10

1,976

A T C | Fidelity Income Replacement 2040 Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(7.80%)

Life of class

rr_AverageAnnualReturnSinceInception

(1.58%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

A T C | Fidelity Income Replacement 2040 Fund | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(5.83%)

Life of class

rr_AverageAnnualReturnSinceInception

(1.25%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

A T C | Fidelity Income Replacement 2040 Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(3.85%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.86%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

A T C | Fidelity Income Replacement 2040 Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(8.29%)

Life of class

rr_AverageAnnualReturnSinceInception

(2.22%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

A T C | Fidelity Income Replacement 2040 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(4.93%)

Life of class

rr_AverageAnnualReturnSinceInception

(1.66%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

A T C | Fidelity Income Replacement 2040 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.64%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[3] On Class C shares redeemed less than one year after purchase.

[4] From December 31, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Retail | Fidelity Income Replacement 2034 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2034 Fund^SM/Fidelity Income Replacement 2034 Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 34% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

34.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2034.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	46.9%
International Equity Fund	9.2%
Bond Funds
Investment-Grade Bond Funds	27.3%
High Yield Bond Funds	5.3%
Short-Term Funds
Short-Term Funds	11.3%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	14.25%	June 30, 2009
Lowest Quarter Return	-15.15%	December 31, 2008
Year-to-Date Return	6.13%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Retail | Fidelity Income Replacement 2034 Fund | Class: Fidelity Income Replacement 2034 Fund

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.64%

Total annual operating expenses

rr_ExpensesOverAssets

0.64%

^[1]

1 year

rr_ExpenseExampleYear01

65

3 years

rr_ExpenseExampleYear03

205

5 years

rr_ExpenseExampleYear05

357

10 years

rr_ExpenseExampleYear10

798

2008

rr_AnnualReturn2008

(27.66%)

2009

rr_AnnualReturn2009

26.40%

2010

rr_AnnualReturn2010

12.71%

2011

rr_AnnualReturn2011

(1.23%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.13%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

14.25%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(15.15%)

Retail | Fidelity Income Replacement 2034 Fund | Return Before Taxes | Class: Fidelity Income Replacement 2034 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2034 Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(1.23%)

Life of class

rr_AverageAnnualReturnSinceInception

1.18%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2034 Fund | Return After Taxes on Distributions | Class: Fidelity Income Replacement 2034 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2034 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(1.86%)

Life of class

rr_AverageAnnualReturnSinceInception

0.38%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2034 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class: Fidelity Income Replacement 2034 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2034 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.67%)

Life of class

rr_AverageAnnualReturnSinceInception

0.61%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2034 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Inst | Fidelity Income Replacement 2020 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2020 Fund^SM/Fidelity Advisor Income Replacement 2020 Fund^SM Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 35% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

35.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2020.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	32.1%
International Equity Fund	3.3%
Bond Funds
Investment-Grade Bond Funds	37.7%
High Yield Bond Funds	2.2%
Short-Term Funds
Short-Term Funds	24.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	11.53%	June 30, 2009
Lowest Quarter Return	-12.11%	December 31, 2008
Year-to-Date Return	4.74%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Inst | Fidelity Income Replacement 2020 Fund | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.55%

Total annual operating expenses

rr_ExpensesOverAssets

0.55%

^[1]

1 year

rr_ExpenseExampleYear01

56

3 years

rr_ExpenseExampleYear03

176

5 years

rr_ExpenseExampleYear05

307

10 years

rr_ExpenseExampleYear10

689

2008

rr_AnnualReturn2008

(21.90%)

2009

rr_AnnualReturn2009

22.11%

2010

rr_AnnualReturn2010

10.67%

2011

rr_AnnualReturn2011

0.85%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

4.74%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

11.53%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(12.11%)

Inst | Fidelity Income Replacement 2020 Fund | Return Before Taxes | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

0.85%

Life of class

rr_AverageAnnualReturnSinceInception

2.10%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2020 Fund | Return After Taxes on Distributions | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

0.13%

Life of class

rr_AverageAnnualReturnSinceInception

1.18%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2020 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

0.63%

Life of class

rr_AverageAnnualReturnSinceInception

1.29%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2020 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Inst | Fidelity Income Replacement 2016 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2016 Fund^SM/Fidelity Advisor Income Replacement 2016 Fund^SM Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 44% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

44.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2016.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	17.2%
International Equity Fund	0.0%
Bond Funds
Investment-Grade Bond Funds	34.0%
High Yield Bond Funds	0.0%
Short-Term Funds
Short-Term Funds	48.8%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	9.48%	June 30, 2009
Lowest Quarter Return	-9.84%	December 31, 2008
Year-to-Date Return	3.34%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Inst | Fidelity Income Replacement 2016 Fund | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.46%

Total annual operating expenses

rr_ExpensesOverAssets

0.46%

^[1]

1 year

rr_ExpenseExampleYear01

47

3 years

rr_ExpenseExampleYear03

148

5 years

rr_ExpenseExampleYear05

258

10 years

rr_ExpenseExampleYear10

579

2008

rr_AnnualReturn2008

(17.78%)

2009

rr_AnnualReturn2009

18.50%

2010

rr_AnnualReturn2010

8.71%

2011

rr_AnnualReturn2011

2.15%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

3.34%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

9.48%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(9.84%)

Inst | Fidelity Income Replacement 2016 Fund | Return Before Taxes | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

2.15%

Life of class

rr_AverageAnnualReturnSinceInception

2.45%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2016 Fund | Return After Taxes on Distributions | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

1.39%

Life of class

rr_AverageAnnualReturnSinceInception

1.46%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2016 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

1.44%

Life of class

rr_AverageAnnualReturnSinceInception

1.52%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2016 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Retail | Fidelity Income Replacement 2028 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2028 Fund^SM/Fidelity Income Replacement 2028 Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 46% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

46.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2028.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	44.1%
International Equity Fund	6.8%
Bond Funds
Investment-Grade Bond Funds	29.9%
High Yield Bond Funds	4.5%
Short-Term Funds
Short-Term Funds	14.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	13.28%	June 30, 2009
Lowest Quarter Return	-14.06%	December 31, 2008
Year-to-Date Return	5.78%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Retail | Fidelity Income Replacement 2028 Fund | Class: Fidelity Income Replacement 2028 Fund

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.61%

Total annual operating expenses

rr_ExpensesOverAssets

0.61%

^[1]

1 year

rr_ExpenseExampleYear01

62

3 years

rr_ExpenseExampleYear03

195

5 years

rr_ExpenseExampleYear05

340

10 years

rr_ExpenseExampleYear10

762

2008

rr_AnnualReturn2008

(25.43%)

2009

rr_AnnualReturn2009

24.88%

2010

rr_AnnualReturn2010

12.14%

2011

rr_AnnualReturn2011

(0.57%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.78%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.28%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(14.06%)

Retail | Fidelity Income Replacement 2028 Fund | Return Before Taxes | Class: Fidelity Income Replacement 2028 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2028 Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(0.57%)

Life of class

rr_AverageAnnualReturnSinceInception

1.59%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2028 Fund | Return After Taxes on Distributions | Class: Fidelity Income Replacement 2028 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2028 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(1.22%)

Life of class

rr_AverageAnnualReturnSinceInception

0.75%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2028 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class: Fidelity Income Replacement 2028 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2028 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.25%)

Life of class

rr_AverageAnnualReturnSinceInception

0.90%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2028 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

A T C | Fidelity Income Replacement 2030 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2030 Fund^SM/Fidelity Advisor Income Replacement 2030 Fund^SM A, T, C

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees A T C Fidelity Income Replacement 2030 Fund	Class A		Class T		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	5.75%		3.50%		none
Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)	none	[1]	none	[1]	1.00%	[2]

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses A T C Fidelity Income Replacement 2030 Fund		Class A	Class T	Class C
Management fee		none	none	none
Distribution and/or Service (12b-1) fees		0.25%	0.50%	1.00%
Other expenses		none	none	none
Acquired fund fees and expenses		0.62%	0.62%	0.62%
Total annual operating expenses	[1]	0.87%	1.12%	1.62%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Sell All Shares

Expense Example A T C Fidelity Income Replacement 2030 Fund (USD $)	Class A	Class T	Class C
1 year	659	460	265
3 years	837	694	511
5 years	1,029	945	881
10 years	1,586	1,665	1,922

Hold Shares

Expense Example, No Redemption A T C Fidelity Income Replacement 2030 Fund (USD $)	Class A	Class T	Class C
1 year	659	460	165
3 years	837	694	511
5 years	1,029	945	881
10 years	1,586	1,665	1,922

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 50% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2030.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	45.3%
International Equity Fund	7.5%
Bond Funds
Investment-Grade Bond Funds	29.1%
High Yield Bond Funds	4.8%
Short-Term Funds
Short-Term Funds	13.3%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	13.51%	June 30, 2009
Lowest Quarter Return	-14.40%	December 31, 2008
Year-to-Date Return	5.80%	June 30, 2012

Average Annual Returns

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns A T C Fidelity Income Replacement 2030 Fund	Past 1 year	Life of class		Inception Date
Class A Return Before Taxes	(6.73%)	(0.12%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions	(7.24%)	(0.86%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions and Sale of Fund Shares	(4.26%)	(0.48%)	[1]	Aug. 30, 2007
Class T Return Before Taxes	(4.76%)	0.17%	[1]	Aug. 30, 2007
Class C Return Before Taxes	(2.75%)	0.49%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] On Class C shares redeemed less than one year after purchase.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Inst | Fidelity Income Replacement 2024 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2024 Fund^SM/Fidelity Advisor Income Replacement 2024 Fund^SM Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 65% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

65.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2024.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	40.3%
International Equity Fund	5.2%
Bond Funds
Investment-Grade Bond Funds	32.9%
High Yield Bond Funds	3.7%
Short-Term Funds
Short-Term Funds	17.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	12.59%	June 30, 2009
Lowest Quarter Return	-13.28%	December 31, 2008
Year-to-Date Return	5.46%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

Going forward, the fund's performance will be compared to the Barclays^® U.S. Aggregate Bond Index, rather than the S&P 500^® Index. The Barclays U.S. Aggregate Bond Index more closely represents the fund's investment strategy, as fixed-income and short-term funds currently represent the majority of the fund's assets.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Inst | Fidelity Income Replacement 2024 Fund | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.59%

Total annual operating expenses

rr_ExpensesOverAssets

0.59%

^[1]

1 year

rr_ExpenseExampleYear01

60

3 years

rr_ExpenseExampleYear03

189

5 years

rr_ExpenseExampleYear05

329

10 years

rr_ExpenseExampleYear10

738

2008

rr_AnnualReturn2008

(24.04%)

2009

rr_AnnualReturn2009

23.89%

2010

rr_AnnualReturn2010

11.62%

2011

rr_AnnualReturn2011

0.00%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.46%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.59%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(13.28%)

Inst | Fidelity Income Replacement 2024 Fund | Return Before Taxes | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

none

Life of class

rr_AverageAnnualReturnSinceInception

1.88%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2024 Fund | Return After Taxes on Distributions | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(0.67%)

Life of class

rr_AverageAnnualReturnSinceInception

0.96%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2024 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

0.11%

Life of class

rr_AverageAnnualReturnSinceInception

1.10%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2024 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2024 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

Retail | Fidelity Income Replacement 2026 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2026 Fund^SM/Fidelity Income Replacement 2026 Fund

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Retail Fidelity Income Replacement 2026 Fund Class: Fidelity Income Replacement 2026 Fund
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Retail Fidelity Income Replacement 2026 Fund Class: Fidelity Income Replacement 2026 Fund
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.60%
Total annual operating expenses	[1]	0.60%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Retail Fidelity Income Replacement 2026 Fund Class: Fidelity Income Replacement 2026 Fund
1 year	61
3 years	192
5 years	335
10 years	750

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 60% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2026.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	42.6%
International Equity Fund	6.0%
Bond Funds
Investment-Grade Bond Funds	31.2%
High Yield Bond Funds	4.2%
Short-Term Funds
Short-Term Funds	16.0%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	12.93%	June 30, 2009
Lowest Quarter Return	-13.72%	December 31, 2008
Year-to-Date Return	5.64%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Retail Fidelity Income Replacement 2026 Fund	Past 1 year	Life of class		Inception Date
Class: Fidelity Income Replacement 2026 Fund Return Before Taxes	(0.34%)	1.70%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2026 Fund Return After Taxes on Distributions	(0.99%)	0.80%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2026 Fund Return After Taxes on Distributions and Sale of Fund Shares	(0.11%)	0.97%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

Going forward, the fund's performance will be compared to the Barclays^® U.S. Aggregate Bond Index, rather than the S&P 500^® Index. The Barclays U.S. Aggregate Bond Index more closely represents the fund's investment strategy, as fixed-income and short-term funds currently represent the majority of the fund's assets.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Inst | Fidelity Income Replacement 2040 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2040 Fund^SM/Fidelity Advisor Income Replacement 2040 Fund^SM Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 63% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

63.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2040.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	49.9%
International Equity Fund	12.0%
Bond Funds
Investment-Grade Bond Funds	25.8%
High Yield Bond Funds	6.2%
Short-Term Funds
Short-Term Funds	6.1%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.
• "Value" Investing. "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	15.49%	June 30, 2009
Lowest Quarter Return	-16.46%	December 31, 2008
Year-to-Date Return	6.55%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Inst | Fidelity Income Replacement 2040 Fund | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.67%

Total annual operating expenses

rr_ExpensesOverAssets

0.67%

^[1]

1 year

rr_ExpenseExampleYear01

68

3 years

rr_ExpenseExampleYear03

214

5 years

rr_ExpenseExampleYear05

373

10 years

rr_ExpenseExampleYear10

835

2008

rr_AnnualReturn2008

(29.79%)

2009

rr_AnnualReturn2009

28.44%

2010

rr_AnnualReturn2010

13.67%

2011

rr_AnnualReturn2011

(1.91%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.55%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

15.49%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(16.46%)

Inst | Fidelity Income Replacement 2040 Fund | Return Before Taxes | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(1.91%)

Life of class

rr_AverageAnnualReturnSinceInception

0.14%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Inst | Fidelity Income Replacement 2040 Fund | Return After Taxes on Distributions | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(2.53%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.60%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Inst | Fidelity Income Replacement 2040 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(1.09%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.26%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Inst | Fidelity Income Replacement 2040 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.64%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From December 31, 2007.

XML

Retail | Fidelity Income Replacement 2018 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2018 Fund^SM/Fidelity Income Replacement 2018 Fund

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Retail Fidelity Income Replacement 2018 Fund Class: Fidelity Income Replacement 2018 Fund
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Retail Fidelity Income Replacement 2018 Fund Class: Fidelity Income Replacement 2018 Fund
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.51%
Total annual operating expenses	[1]	0.51%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Retail Fidelity Income Replacement 2018 Fund Class: Fidelity Income Replacement 2018 Fund
1 year	52
3 years	164
5 years	285
10 years	640

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 44% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2018.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	25.5%
International Equity Fund	2.3%
Bond Funds
Investment-Grade Bond Funds	41.5%
High Yield Bond Funds	0.0%
Short-Term Funds
Short-Term Funds	30.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	10.63%	June 30, 2009
Lowest Quarter Return	-11.10%	December 31, 2008
Year-to-Date Return	4.16%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Retail Fidelity Income Replacement 2018 Fund	Past 1 year	Life of class		Inception Date
Class: Fidelity Income Replacement 2018 Fund Return Before Taxes	1.46%	2.32%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2018 Fund Return After Taxes on Distributions	0.72%	1.33%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2018 Fund Return After Taxes on Distributions and Sale of Fund Shares	1.02%	1.42%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

A T C | Fidelity Income Replacement 2024 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2024 Fund^SM/Fidelity Advisor Income Replacement 2024 Fund^SM A, T, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 65% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

65.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2024.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	40.3%
International Equity Fund	5.2%
Bond Funds
Investment-Grade Bond Funds	32.9%
High Yield Bond Funds	3.7%
Short-Term Funds
Short-Term Funds	17.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	12.49%	June 30, 2009
Lowest Quarter Return	-13.35%	December 31, 2008
Year-to-Date Return	5.33%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

Going forward, the fund's performance will be compared to the Barclays^® U.S. Aggregate Bond Index, rather than the S&P 500^® Index. The Barclays U.S. Aggregate Bond Index more closely represents the fund's investment strategy, as fixed-income and short-term funds currently represent the majority of the fund's assets.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

A T C | Fidelity Income Replacement 2024 Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.59%

Total annual operating expenses

rr_ExpensesOverAssets

0.84%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

656

3 years

rr_ExpenseExampleYear03

828

5 years

rr_ExpenseExampleYear05

1,014

10 years

rr_ExpenseExampleYear10

1,553

1 year

rr_ExpenseExampleNoRedemptionYear01

656

3 years

rr_ExpenseExampleNoRedemptionYear03

828

5 years

rr_ExpenseExampleNoRedemptionYear05

1,014

10 years

rr_ExpenseExampleNoRedemptionYear10

1,553

2008

rr_AnnualReturn2008

(24.21%)

2009

rr_AnnualReturn2009

23.55%

2010

rr_AnnualReturn2010

11.36%

2011

rr_AnnualReturn2011

(0.25%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.33%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.49%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(13.35%)

A T C | Fidelity Income Replacement 2024 Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.50%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.59%

Total annual operating expenses

rr_ExpensesOverAssets

1.09%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

457

3 years

rr_ExpenseExampleYear03

684

5 years

rr_ExpenseExampleYear05

930

10 years

rr_ExpenseExampleYear10

1,632

1 year

rr_ExpenseExampleNoRedemptionYear01

457

3 years

rr_ExpenseExampleNoRedemptionYear03

684

5 years

rr_ExpenseExampleNoRedemptionYear05

930

10 years

rr_ExpenseExampleNoRedemptionYear10

1,632

A T C | Fidelity Income Replacement 2024 Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[3]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.59%

Total annual operating expenses

rr_ExpensesOverAssets

1.59%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

On Class C shares redeemed less than one year after purchase.

1 year

rr_ExpenseExampleYear01

262

3 years

rr_ExpenseExampleYear03

502

5 years

rr_ExpenseExampleYear05

866

10 years

rr_ExpenseExampleYear10

1,889

1 year

rr_ExpenseExampleNoRedemptionYear01

162

3 years

rr_ExpenseExampleNoRedemptionYear03

502

5 years

rr_ExpenseExampleNoRedemptionYear05

866

10 years

rr_ExpenseExampleNoRedemptionYear10

1,889

A T C | Fidelity Income Replacement 2024 Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(5.99%)

Life of class

rr_AverageAnnualReturnSinceInception

0.25%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2024 Fund | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(3.97%)

Life of class

rr_AverageAnnualReturnSinceInception

0.55%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2024 Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(1.97%)

Life of class

rr_AverageAnnualReturnSinceInception

0.86%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2024 Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(6.54%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.57%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2024 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(3.79%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.23%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2024 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2024 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[3] On Class C shares redeemed less than one year after purchase.

[4] From August 30, 2007.

XML

A T C | Fidelity Income Replacement 2020 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2020 Fund^SM/Fidelity Advisor Income Replacement 2020 Fund^SM A, T, C

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees A T C Fidelity Income Replacement 2020 Fund	Class A		Class T		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	5.75%		3.50%		none
Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)	none	[1]	none	[1]	1.00%	[2]

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses A T C Fidelity Income Replacement 2020 Fund		Class A	Class T	Class C
Management fee		none	none	none
Distribution and/or Service (12b-1) fees		0.25%	0.50%	1.00%
Other expenses		none	none	none
Acquired fund fees and expenses		0.55%	0.55%	0.55%
Total annual operating expenses	[1]	0.80%	1.05%	1.55%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Sell All Shares

Expense Example A T C Fidelity Income Replacement 2020 Fund (USD $)	Class A	Class T	Class C
1 year	652	453	258
3 years	816	672	490
5 years	994	909	845
10 years	1,508	1,588	1,845

Hold Shares

Expense Example, No Redemption A T C Fidelity Income Replacement 2020 Fund (USD $)	Class A	Class T	Class C
1 year	652	453	158
3 years	816	672	490
5 years	994	909	845
10 years	1,508	1,588	1,845

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 35% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2020.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	32.1%
International Equity Fund	3.3%
Bond Funds
Investment-Grade Bond Funds	37.7%
High Yield Bond Funds	2.2%
Short-Term Funds
Short-Term Funds	24.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	11.46%	June 30, 2009
Lowest Quarter Return	-12.17%	December 31, 2008
Year-to-Date Return	4.61%	June 30, 2012

Average Annual Returns

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns A T C Fidelity Income Replacement 2020 Fund	Past 1 year	Life of class		Inception Date
Class A Return Before Taxes	(5.17%)	0.47%	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions	(5.77%)	(0.35%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions and Sale of Fund Shares	(3.29%)	(0.05%)	[1]	Aug. 30, 2007
Class T Return Before Taxes	(3.15%)	0.77%	[1]	Aug. 30, 2007
Class C Return Before Taxes	(1.16%)	1.08%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] On Class C shares redeemed less than one year after purchase.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

A T C | Fidelity Income Replacement 2034 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2034 Fund^SM/Fidelity Advisor Income Replacement 2034 Fund^SM A, T, C

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees A T C Fidelity Income Replacement 2034 Fund	Class A		Class T		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	5.75%		3.50%		none
Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)	none	[1]	none	[1]	1.00%	[2]

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses A T C Fidelity Income Replacement 2034 Fund		Class A	Class T	Class C
Management fee		none	none	none
Distribution and/or Service (12b-1) fees		0.25%	0.50%	1.00%
Other expenses		none	none	none
Acquired fund fees and expenses		0.64%	0.64%	0.64%
Total annual operating expenses	[1]	0.89%	1.14%	1.64%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Sell All Shares

Expense Example A T C Fidelity Income Replacement 2034 Fund (USD $)	Class A	Class T	Class C
1 year	661	462	267
3 years	843	700	517
5 years	1,040	956	892
10 years	1,608	1,688	1,944

Hold Shares

Expense Example, No Redemption A T C Fidelity Income Replacement 2034 Fund (USD $)	Class A	Class T	Class C
1 year	661	462	167
3 years	843	700	517
5 years	1,040	956	892
10 years	1,608	1,688	1,944

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 34% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2034.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	46.9%
International Equity Fund	9.2%
Bond Funds
Investment-Grade Bond Funds	27.3%
High Yield Bond Funds	5.3%
Short-Term Funds
Short-Term Funds	11.3%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	14.21%	June 30, 2009
Lowest Quarter Return	-15.21%	December 31, 2008
Year-to-Date Return	5.99%	June 30, 2012

Average Annual Returns

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns A T C Fidelity Income Replacement 2034 Fund	Past 1 year	Life of class		Inception Date
Class A Return Before Taxes	(7.13%)	(0.43%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions	(7.64%)	(1.13%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions and Sale of Fund Shares	(4.51%)	(0.71%)	[1]	Aug. 30, 2007
Class T Return Before Taxes	(5.16%)	(0.14%)	[1]	Aug. 30, 2007
Class C Return Before Taxes	(3.15%)	0.18%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] On Class C shares redeemed less than one year after purchase.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Retail | Fidelity Income Replacement 2026 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2026 Fund^SM/Fidelity Income Replacement 2026 Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 60% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

60.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2026.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	42.6%
International Equity Fund	6.0%
Bond Funds
Investment-Grade Bond Funds	31.2%
High Yield Bond Funds	4.2%
Short-Term Funds
Short-Term Funds	16.0%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	12.93%	June 30, 2009
Lowest Quarter Return	-13.72%	December 31, 2008
Year-to-Date Return	5.64%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

Going forward, the fund's performance will be compared to the Barclays^® U.S. Aggregate Bond Index, rather than the S&P 500^® Index. The Barclays U.S. Aggregate Bond Index more closely represents the fund's investment strategy, as fixed-income and short-term funds currently represent the majority of the fund's assets.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Retail | Fidelity Income Replacement 2026 Fund | Class: Fidelity Income Replacement 2026 Fund

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.60%

Total annual operating expenses

rr_ExpensesOverAssets

0.60%

^[1]

1 year

rr_ExpenseExampleYear01

61

3 years

rr_ExpenseExampleYear03

192

5 years

rr_ExpenseExampleYear05

335

10 years

rr_ExpenseExampleYear10

750

2008

rr_AnnualReturn2008

(24.78%)

2009

rr_AnnualReturn2009

24.38%

2010

rr_AnnualReturn2010

11.95%

2011

rr_AnnualReturn2011

(0.34%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.64%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.93%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(13.72%)

Retail | Fidelity Income Replacement 2026 Fund | Return Before Taxes | Class: Fidelity Income Replacement 2026 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2026 Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(0.34%)

Life of class

rr_AverageAnnualReturnSinceInception

1.70%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2026 Fund | Return After Taxes on Distributions | Class: Fidelity Income Replacement 2026 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2026 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(0.99%)

Life of class

rr_AverageAnnualReturnSinceInception

0.80%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2026 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class: Fidelity Income Replacement 2026 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2026 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.11%)

Life of class

rr_AverageAnnualReturnSinceInception

0.97%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2026 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2026 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

A T C | Fidelity Income Replacement 2042 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2042 Fund^SM/Fidelity Advisor Income Replacement 2042 Fund^SM A, T, C

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees A T C Fidelity Income Replacement 2042 Fund	Class A		Class T		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	5.75%		3.50%		none
Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)	none	[1]	none	[1]	1.00%	[2]

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses A T C Fidelity Income Replacement 2042 Fund		Class A	Class T	Class C
Management fee		none	none	none
Distribution and/or Service (12b-1) fees		0.25%	0.50%	1.00%
Other expenses		none	none	none
Acquired fund fees and expenses		0.68%	0.68%	0.68%
Total annual operating expenses	[1]	0.93%	1.18%	1.68%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Sell All Shares

Expense Example A T C Fidelity Income Replacement 2042 Fund (USD $)	Class A	Class T	Class C
1 year	664	466	271
3 years	854	712	530
5 years	1,060	976	913
10 years	1,652	1,732	1,987

Hold Shares

Expense Example, No Redemption A T C Fidelity Income Replacement 2042 Fund (USD $)	Class A	Class T	Class C
1 year	664	466	171
3 years	854	712	530
5 years	1,060	976	913
10 years	1,652	1,732	1,987

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 40% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2042.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	51.2%
International Equity Fund	12.8%
Bond Funds
Investment-Grade Bond Funds	25.6%
High Yield Bond Funds	6.5%
Short-Term Funds
Short-Term Funds	3.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.
• "Value" Investing. "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	15.61%	June 30, 2009
Lowest Quarter Return	-16.64%	December 31, 2008
Year-to-Date Return	6.59%	June 30, 2012

Average Annual Returns

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns A T C Fidelity Income Replacement 2042 Fund	Past 1 year	Life of class		Inception Date
Class A Return Before Taxes	(7.97%)	(1.61%)	[1]	Dec. 31, 2007
Class A Return After Taxes on Distributions	(8.46%)	(2.24%)	[1]	Dec. 31, 2007
Class A Return After Taxes on Distributions and Sale of Fund Shares	(5.04%)	(1.68%)	[1]	Dec. 31, 2007
Class T Return Before Taxes	(6.01%)	(1.27%)	[1]	Dec. 31, 2007
Class C Return Before Taxes	(4.03%)	(0.88%)	[1]	Dec. 31, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.64%)	[1]	Dec. 31, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] On Class C shares redeemed less than one year after purchase.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From December 31, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Retail | Fidelity Income Replacement 2022 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2022 Fund^SM/Fidelity Income Replacement 2022 Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 43% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

43.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2022.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	37.0%
International Equity Fund	4.2%
Bond Funds
Investment-Grade Bond Funds	35.0%
High Yield Bond Funds	3.1%
Short-Term Funds
Short-Term Funds	20.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	12.11%	June 30, 2009
Lowest Quarter Return	-12.77%	December 31, 2008
Year-to-Date Return	5.16%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Retail | Fidelity Income Replacement 2022 Fund | Class: Fidelity Income Replacement 2022 Fund

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.57%

Total annual operating expenses

rr_ExpensesOverAssets

0.57%

^[1]

1 year

rr_ExpenseExampleYear01

58

3 years

rr_ExpenseExampleYear03

183

5 years

rr_ExpenseExampleYear05

318

10 years

rr_ExpenseExampleYear10

714

2008

rr_AnnualReturn2008

(23.02%)

2009

rr_AnnualReturn2009

23.12%

2010

rr_AnnualReturn2010

11.26%

2011

rr_AnnualReturn2011

0.38%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.16%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.11%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(12.77%)

Retail | Fidelity Income Replacement 2022 Fund | Return Before Taxes | Class: Fidelity Income Replacement 2022 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2022 Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

0.38%

Life of class

rr_AverageAnnualReturnSinceInception

2.00%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2022 Fund | Return After Taxes on Distributions | Class: Fidelity Income Replacement 2022 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2022 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(0.30%)

Life of class

rr_AverageAnnualReturnSinceInception

1.06%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2022 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class: Fidelity Income Replacement 2022 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2022 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

0.34%

Life of class

rr_AverageAnnualReturnSinceInception

1.19%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2022 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

A T C | Fidelity Income Replacement 2016 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2016 Fund^SM/Fidelity Advisor Income Replacement 2016 Fund^SM A, T, C

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees A T C Fidelity Income Replacement 2016 Fund	Class A		Class T		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	5.75%		3.50%		none
Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)	none	[1]	none	[1]	1.00%	[2]

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses A T C Fidelity Income Replacement 2016 Fund		Class A	Class T	Class C
Management fee		none	none	none
Distribution and/or Service (12b-1) fees		0.25%	0.50%	1.00%
Other expenses		none	none	none
Acquired fund fees and expenses		0.46%	0.46%	0.46%
Total annual operating expenses	[1]	0.71%	0.96%	1.46%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Sell All Shares

Expense Example A T C Fidelity Income Replacement 2016 Fund (USD $)	Class A	Class T	Class C
1 year	643	445	249
3 years	789	645	462
5 years	947	862	797
10 years	1,407	1,487	1,746

Hold Shares

Expense Example, No Redemption A T C Fidelity Income Replacement 2016 Fund (USD $)	Class A	Class T	Class C
1 year	643	445	149
3 years	789	645	462
5 years	947	862	797
10 years	1,407	1,487	1,746

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 44% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2016.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	17.2%
International Equity Fund	0.0%
Bond Funds
Investment-Grade Bond Funds	34.0%
High Yield Bond Funds	0.0%
Short-Term Funds
Short-Term Funds	48.8%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	9.42%	June 30, 2009
Lowest Quarter Return	-9.90%	December 31, 2008
Year-to-Date Return	3.22%	June 30, 2012

Average Annual Returns

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns A T C Fidelity Income Replacement 2016 Fund	Past 1 year	Life of class		Inception Date
Class A Return Before Taxes	(3.95%)	0.81%	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions	(4.58%)	(0.08%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions and Sale of Fund Shares	(2.53%)	0.19%	[1]	Aug. 30, 2007
Class T Return Before Taxes	(1.93%)	1.10%	[1]	Aug. 30, 2007
Class C Return Before Taxes	0.14%	1.43%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] On Class C shares redeemed less than one year after purchase.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

A T C | Fidelity Income Replacement 2042 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2042 Fund^SM/Fidelity Advisor Income Replacement 2042 Fund^SM A, T, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 40% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

40.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2042.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	51.2%
International Equity Fund	12.8%
Bond Funds
Investment-Grade Bond Funds	25.6%
High Yield Bond Funds	6.5%
Short-Term Funds
Short-Term Funds	3.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.
• "Value" Investing. "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	15.61%	June 30, 2009
Lowest Quarter Return	-16.64%	December 31, 2008
Year-to-Date Return	6.59%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

A T C | Fidelity Income Replacement 2042 Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.68%

Total annual operating expenses

rr_ExpensesOverAssets

0.93%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

664

3 years

rr_ExpenseExampleYear03

854

5 years

rr_ExpenseExampleYear05

1,060

10 years

rr_ExpenseExampleYear10

1,652

1 year

rr_ExpenseExampleNoRedemptionYear01

664

3 years

rr_ExpenseExampleNoRedemptionYear03

854

5 years

rr_ExpenseExampleNoRedemptionYear05

1,060

10 years

rr_ExpenseExampleNoRedemptionYear10

1,652

2008

rr_AnnualReturn2008

(30.20%)

2009

rr_AnnualReturn2009

28.59%

2010

rr_AnnualReturn2010

13.46%

2011

rr_AnnualReturn2011

(2.35%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.59%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

15.61%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(16.64%)

A T C | Fidelity Income Replacement 2042 Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.50%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.68%

Total annual operating expenses

rr_ExpensesOverAssets

1.18%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

466

3 years

rr_ExpenseExampleYear03

712

5 years

rr_ExpenseExampleYear05

976

10 years

rr_ExpenseExampleYear10

1,732

1 year

rr_ExpenseExampleNoRedemptionYear01

466

3 years

rr_ExpenseExampleNoRedemptionYear03

712

5 years

rr_ExpenseExampleNoRedemptionYear05

976

10 years

rr_ExpenseExampleNoRedemptionYear10

1,732

A T C | Fidelity Income Replacement 2042 Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[3]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.68%

Total annual operating expenses

rr_ExpensesOverAssets

1.68%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

On Class C shares redeemed less than one year after purchase.

1 year

rr_ExpenseExampleYear01

271

3 years

rr_ExpenseExampleYear03

530

5 years

rr_ExpenseExampleYear05

913

10 years

rr_ExpenseExampleYear10

1,987

1 year

rr_ExpenseExampleNoRedemptionYear01

171

3 years

rr_ExpenseExampleNoRedemptionYear03

530

5 years

rr_ExpenseExampleNoRedemptionYear05

913

10 years

rr_ExpenseExampleNoRedemptionYear10

1,987

A T C | Fidelity Income Replacement 2042 Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(7.97%)

Life of class

rr_AverageAnnualReturnSinceInception

(1.61%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

A T C | Fidelity Income Replacement 2042 Fund | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(6.01%)

Life of class

rr_AverageAnnualReturnSinceInception

(1.27%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

A T C | Fidelity Income Replacement 2042 Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(4.03%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.88%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

A T C | Fidelity Income Replacement 2042 Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(8.46%)

Life of class

rr_AverageAnnualReturnSinceInception

(2.24%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

A T C | Fidelity Income Replacement 2042 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(5.04%)

Life of class

rr_AverageAnnualReturnSinceInception

(1.68%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

A T C | Fidelity Income Replacement 2042 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.64%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[3] On Class C shares redeemed less than one year after purchase.

[4] From December 31, 2007.

XML

Inst | Fidelity Income Replacement 2020 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2020 Fund^SM/Fidelity Advisor Income Replacement 2020 Fund^SM Institutional

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Inst Fidelity Income Replacement 2020 Fund Institutional Class
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Inst Fidelity Income Replacement 2020 Fund Institutional Class
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.55%
Total annual operating expenses	[1]	0.55%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Inst Fidelity Income Replacement 2020 Fund Institutional Class
1 year	56
3 years	176
5 years	307
10 years	689

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 35% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2020.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	32.1%
International Equity Fund	3.3%
Bond Funds
Investment-Grade Bond Funds	37.7%
High Yield Bond Funds	2.2%
Short-Term Funds
Short-Term Funds	24.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	11.53%	June 30, 2009
Lowest Quarter Return	-12.11%	December 31, 2008
Year-to-Date Return	4.74%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Inst Fidelity Income Replacement 2020 Fund	Past 1 year	Life of class		Inception Date
Institutional Class Return Before Taxes	0.85%	2.10%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions	0.13%	1.18%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions and Sale of Fund Shares	0.63%	1.29%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Retail | Fidelity Income Replacement 2028 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2028 Fund^SM/Fidelity Income Replacement 2028 Fund

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Retail Fidelity Income Replacement 2028 Fund Class: Fidelity Income Replacement 2028 Fund
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Retail Fidelity Income Replacement 2028 Fund Class: Fidelity Income Replacement 2028 Fund
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.61%
Total annual operating expenses	[1]	0.61%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Retail Fidelity Income Replacement 2028 Fund Class: Fidelity Income Replacement 2028 Fund
1 year	62
3 years	195
5 years	340
10 years	762

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 46% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2028.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	44.1%
International Equity Fund	6.8%
Bond Funds
Investment-Grade Bond Funds	29.9%
High Yield Bond Funds	4.5%
Short-Term Funds
Short-Term Funds	14.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	13.28%	June 30, 2009
Lowest Quarter Return	-14.06%	December 31, 2008
Year-to-Date Return	5.78%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Retail Fidelity Income Replacement 2028 Fund	Past 1 year	Life of class		Inception Date
Class: Fidelity Income Replacement 2028 Fund Return Before Taxes	(0.57%)	1.59%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2028 Fund Return After Taxes on Distributions	(1.22%)	0.75%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2028 Fund Return After Taxes on Distributions and Sale of Fund Shares	(0.25%)	0.90%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Retail | Fidelity Income Replacement 2024 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2024 Fund^SM/Fidelity Income Replacement 2024 Fund

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Retail Fidelity Income Replacement 2024 Fund Class: Fidelity Income Replacement 2024 Fund
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Retail Fidelity Income Replacement 2024 Fund Class: Fidelity Income Replacement 2024 Fund
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.59%
Total annual operating expenses	[1]	0.59%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Retail Fidelity Income Replacement 2024 Fund Class: Fidelity Income Replacement 2024 Fund
1 year	60
3 years	189
5 years	329
10 years	738

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 65% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2024.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	40.3%
International Equity Fund	5.2%
Bond Funds
Investment-Grade Bond Funds	32.9%
High Yield Bond Funds	3.7%
Short-Term Funds
Short-Term Funds	17.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	12.56%	June 30, 2009
Lowest Quarter Return	-13.28%	December 31, 2008
Year-to-Date Return	5.46%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Retail Fidelity Income Replacement 2024 Fund	Past 1 year	Life of class		Inception Date
Class: Fidelity Income Replacement 2024 Fund Return Before Taxes	none	1.88%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2024 Fund Return After Taxes on Distributions	(0.67%)	0.96%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2024 Fund Return After Taxes on Distributions and Sale of Fund Shares	0.11%	1.10%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

Going forward, the fund's performance will be compared to the Barclays^® U.S. Aggregate Bond Index, rather than the S&P 500^® Index. The Barclays U.S. Aggregate Bond Index more closely represents the fund's investment strategy, as fixed-income and short-term funds currently represent the majority of the fund's assets.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Retail | Fidelity Income Replacement 2016 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2016 Fund^SM/Fidelity Income Replacement 2016 Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 44% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

44.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2016.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	17.2%
International Equity Fund	0.0%
Bond Funds
Investment-Grade Bond Funds	34.0%
High Yield Bond Funds	0.0%
Short-Term Funds
Short-Term Funds	48.8%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	9.48%	June 30, 2009
Lowest Quarter Return	-9.84%	December 31, 2008
Year-to-Date Return	3.34%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Retail | Fidelity Income Replacement 2016 Fund | Class: Fidelity Income Replacement 2016 Fund

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.46%

Total annual operating expenses

rr_ExpensesOverAssets

0.46%

^[1]

1 year

rr_ExpenseExampleYear01

47

3 years

rr_ExpenseExampleYear03

148

5 years

rr_ExpenseExampleYear05

258

10 years

rr_ExpenseExampleYear10

579

2008

rr_AnnualReturn2008

(17.78%)

2009

rr_AnnualReturn2009

18.50%

2010

rr_AnnualReturn2010

8.71%

2011

rr_AnnualReturn2011

2.15%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

3.34%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

9.48%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(9.84%)

Retail | Fidelity Income Replacement 2016 Fund | Return Before Taxes | Class: Fidelity Income Replacement 2016 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2016 Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

2.15%

Life of class

rr_AverageAnnualReturnSinceInception

2.45%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2016 Fund | Return After Taxes on Distributions | Class: Fidelity Income Replacement 2016 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2016 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

1.39%

Life of class

rr_AverageAnnualReturnSinceInception

1.46%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2016 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class: Fidelity Income Replacement 2016 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2016 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

1.44%

Life of class

rr_AverageAnnualReturnSinceInception

1.52%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2016 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Inst | Fidelity Income Replacement 2038 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2038 Fund^SM/Fidelity Advisor Income Replacement 2038 Fund^SM Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 57% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

57.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2038.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	48.7%
International Equity Fund	10.9%
Bond Funds
Investment-Grade Bond Funds	26.2%
High Yield Bond Funds	5.8%
Short-Term Funds
Short-Term Funds	8.4%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	15.19%	June 30, 2009
Lowest Quarter Return	-16.18%	December 31, 2008
Year-to-Date Return	6.35%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Inst | Fidelity Income Replacement 2038 Fund | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.66%

Total annual operating expenses

rr_ExpensesOverAssets

0.66%

^[1]

1 year

rr_ExpenseExampleYear01

67

3 years

rr_ExpenseExampleYear03

211

5 years

rr_ExpenseExampleYear05

368

10 years

rr_ExpenseExampleYear10

822

2008

rr_AnnualReturn2008

(29.48%)

2009

rr_AnnualReturn2009

27.89%

2010

rr_AnnualReturn2010

13.21%

2011

rr_AnnualReturn2011

(1.68%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.35%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

15.19%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(16.18%)

Inst | Fidelity Income Replacement 2038 Fund | Return Before Taxes | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(1.68%)

Life of class

rr_AverageAnnualReturnSinceInception

0.10%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Inst | Fidelity Income Replacement 2038 Fund | Return After Taxes on Distributions | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(2.31%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.65%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Inst | Fidelity Income Replacement 2038 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.96%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.30%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Inst | Fidelity Income Replacement 2038 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.64%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From December 31, 2007.

XML

Inst | Fidelity Income Replacement 2034 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2034 Fund^SM/Fidelity Advisor Income Replacement 2034 Fund^SM Institutional

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Inst Fidelity Income Replacement 2034 Fund Institutional Class
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Inst Fidelity Income Replacement 2034 Fund Institutional Class
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.64%
Total annual operating expenses	[1]	0.64%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Inst Fidelity Income Replacement 2034 Fund Institutional Class
1 year	65
3 years	205
5 years	357
10 years	798

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 34% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2034.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	46.9%
International Equity Fund	9.2%
Bond Funds
Investment-Grade Bond Funds	27.3%
High Yield Bond Funds	5.3%
Short-Term Funds
Short-Term Funds	11.3%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	14.28%	June 30, 2009
Lowest Quarter Return	-15.17%	December 31, 2008
Year-to-Date Return	6.11%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Inst Fidelity Income Replacement 2034 Fund	Past 1 year	Life of class		Inception Date
Institutional Class Return Before Taxes	(1.21%)	1.19%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions	(1.84%)	0.39%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions and Sale of Fund Shares	(0.66%)	0.61%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Retail | Fidelity Income Replacement 2036 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2036 Fund^SM/Fidelity Income Replacement 2036 Fund

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Retail Fidelity Income Replacement 2036 Fund Class: Fidelity Income Replacement 2036 Fund
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Retail Fidelity Income Replacement 2036 Fund Class: Fidelity Income Replacement 2036 Fund
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.65%
Total annual operating expenses	[1]	0.65%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Retail Fidelity Income Replacement 2036 Fund Class: Fidelity Income Replacement 2036 Fund
1 year	66
3 years	208
5 years	362
10 years	810

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 62% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2036.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	47.8%
International Equity Fund	10.0%
Bond Funds
Investment-Grade Bond Funds	26.8%
High Yield Bond Funds	5.5%
Short-Term Funds
Short-Term Funds	9.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	14.68%	June 30, 2009
Lowest Quarter Return	-15.63%	December 31, 2008
Year-to-Date Return	6.23%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Retail Fidelity Income Replacement 2036 Fund	Past 1 year	Life of class		Inception Date
Class: Fidelity Income Replacement 2036 Fund Return Before Taxes	(1.45%)	1.07%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2036 Fund Return After Taxes on Distributions	(2.06%)	0.19%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2036 Fund Return After Taxes on Distributions and Sale of Fund Shares	(0.81%)	0.45%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Retail | Fidelity Income Replacement 2016 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2016 Fund^SM/Fidelity Income Replacement 2016 Fund

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Retail Fidelity Income Replacement 2016 Fund Class: Fidelity Income Replacement 2016 Fund
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Retail Fidelity Income Replacement 2016 Fund Class: Fidelity Income Replacement 2016 Fund
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.46%
Total annual operating expenses	[1]	0.46%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Retail Fidelity Income Replacement 2016 Fund Class: Fidelity Income Replacement 2016 Fund
1 year	47
3 years	148
5 years	258
10 years	579

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 44% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2016.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	17.2%
International Equity Fund	0.0%
Bond Funds
Investment-Grade Bond Funds	34.0%
High Yield Bond Funds	0.0%
Short-Term Funds
Short-Term Funds	48.8%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	9.48%	June 30, 2009
Lowest Quarter Return	-9.84%	December 31, 2008
Year-to-Date Return	3.34%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Retail Fidelity Income Replacement 2016 Fund	Past 1 year	Life of class		Inception Date
Class: Fidelity Income Replacement 2016 Fund Return Before Taxes	2.15%	2.45%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2016 Fund Return After Taxes on Distributions	1.39%	1.46%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2016 Fund Return After Taxes on Distributions and Sale of Fund Shares	1.44%	1.52%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Inst | Fidelity Income Replacement 2030 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2030 Fund^SM/Fidelity Advisor Income Replacement 2030 Fund^SM Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 50% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

50.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

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• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2030.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	45.3%
International Equity Fund	7.5%
Bond Funds
Investment-Grade Bond Funds	29.1%
High Yield Bond Funds	4.8%
Short-Term Funds
Short-Term Funds	13.3%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

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Principal Investment Risks

Risk Narrative [Text Block]

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• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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]

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You could lose money by investing in the fund.

Risk Not Insured Depository Institution [Text]

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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]

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Performance

Performance Narrative [Text Block]

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The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

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www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

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Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

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Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

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During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	13.58%	June 30, 2009
Lowest Quarter Return	-14.34%	December 31, 2008
Year-to-Date Return	5.94%	June 30, 2012

Performance Table Heading

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Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

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After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Inst | Fidelity Income Replacement 2030 Fund | Institutional Class

Risk/Return:

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Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.62%

Total annual operating expenses

rr_ExpensesOverAssets

0.62%

^[1]

1 year

rr_ExpenseExampleYear01

63

3 years

rr_ExpenseExampleYear03

199

5 years

rr_ExpenseExampleYear05

346

10 years

rr_ExpenseExampleYear10

774

2008

rr_AnnualReturn2008

(26.04%)

2009

rr_AnnualReturn2009

25.37%

2010

rr_AnnualReturn2010

12.37%

2011

rr_AnnualReturn2011

(0.79%)

Year to Date Return, Label

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Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.94%

Highest Quarterly Return, Label

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Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.58%

Lowest Quarterly Return, Label

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Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

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(14.34%)

Inst | Fidelity Income Replacement 2030 Fund | Return Before Taxes | Institutional Class

Risk/Return:

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Column

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Institutional Class

Label

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Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(0.79%)

Life of class

rr_AverageAnnualReturnSinceInception

1.50%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2030 Fund | Return After Taxes on Distributions | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

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Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(1.43%)

Life of class

rr_AverageAnnualReturnSinceInception

0.66%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2030 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.40%)

Life of class

rr_AverageAnnualReturnSinceInception

0.84%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2030 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

Inst | Fidelity Income Replacement 2022 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2022 Fund^SM/Fidelity Advisor Income Replacement 2022 Fund^SM Institutional

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Inst Fidelity Income Replacement 2022 Fund Institutional Class
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Inst Fidelity Income Replacement 2022 Fund Institutional Class
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.57%
Total annual operating expenses	[1]	0.57%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Inst Fidelity Income Replacement 2022 Fund Institutional Class
1 year	58
3 years	183
5 years	318
10 years	714

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 43% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2022.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	37.0%
International Equity Fund	4.2%
Bond Funds
Investment-Grade Bond Funds	35.0%
High Yield Bond Funds	3.1%
Short-Term Funds
Short-Term Funds	20.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	12.11%	June 30, 2009
Lowest Quarter Return	-12.77%	December 31, 2008
Year-to-Date Return	5.16%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Inst Fidelity Income Replacement 2022 Fund	Past 1 year	Life of class		Inception Date
Institutional Class Return Before Taxes	0.36%	1.99%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions	(0.32%)	1.05%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions and Sale of Fund Shares	0.33%	1.18%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Inst | Fidelity Income Replacement 2040 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2040 Fund^SM/Fidelity Advisor Income Replacement 2040 Fund^SM Institutional

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Inst Fidelity Income Replacement 2040 Fund Institutional Class
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Inst Fidelity Income Replacement 2040 Fund Institutional Class
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.67%
Total annual operating expenses	[1]	0.67%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Inst Fidelity Income Replacement 2040 Fund Institutional Class
1 year	68
3 years	214
5 years	373
10 years	835

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 63% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2040.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	49.9%
International Equity Fund	12.0%
Bond Funds
Investment-Grade Bond Funds	25.8%
High Yield Bond Funds	6.2%
Short-Term Funds
Short-Term Funds	6.1%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.
• "Value" Investing. "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	15.49%	June 30, 2009
Lowest Quarter Return	-16.46%	December 31, 2008
Year-to-Date Return	6.55%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Inst Fidelity Income Replacement 2040 Fund	Past 1 year	Life of class		Inception Date
Institutional Class Return Before Taxes	(1.91%)	0.14%	[1]	Dec. 31, 2007
Institutional Class Return After Taxes on Distributions	(2.53%)	(0.60%)	[1]	Dec. 31, 2007
Institutional Class Return After Taxes on Distributions and Sale of Fund Shares	(1.09%)	(0.26%)	[1]	Dec. 31, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.64%)	[1]	Dec. 31, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From December 31, 2007.

XML

A T C | Fidelity Income Replacement 2026 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2026 Fund^SM/Fidelity Advisor Income Replacement 2026 Fund^SM A, T, C

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees A T C Fidelity Income Replacement 2026 Fund	Class A		Class T		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	5.75%		3.50%		none
Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)	none	[1]	none	[1]	1.00%	[2]

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses A T C Fidelity Income Replacement 2026 Fund		Class A	Class T	Class C
Management fee		none	none	none
Distribution and/or Service (12b-1) fees		0.25%	0.50%	1.00%
Other expenses		none	none	none
Acquired fund fees and expenses		0.60%	0.60%	0.60%
Total annual operating expenses	[1]	0.85%	1.10%	1.60%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Sell All Shares

Expense Example A T C Fidelity Income Replacement 2026 Fund (USD $)	Class A	Class T	Class C
1 year	657	458	263
3 years	831	687	505
5 years	1,019	935	871
10 years	1,564	1,643	1,900

Hold Shares

Expense Example, No Redemption A T C Fidelity Income Replacement 2026 Fund (USD $)	Class A	Class T	Class C
1 year	657	458	163
3 years	831	687	505
5 years	1,019	935	871
10 years	1,564	1,643	1,900

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 60% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2026.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	42.6%
International Equity Fund	6.0%
Bond Funds
Investment-Grade Bond Funds	31.2%
High Yield Bond Funds	4.2%
Short-Term Funds
Short-Term Funds	16.0%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	12.89%	June 30, 2009
Lowest Quarter Return	-13.76%	December 31, 2008
Year-to-Date Return	5.52%	June 30, 2012

Average Annual Returns

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns A T C Fidelity Income Replacement 2026 Fund	Past 1 year	Life of class		Inception Date
Class A Return Before Taxes	(6.30%)	0.07%	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions	(6.83%)	(0.73%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions and Sale of Fund Shares	(3.99%)	(0.35%)	[1]	Aug. 30, 2007
Class T Return Before Taxes	(4.31%)	0.36%	[1]	Aug. 30, 2007
Class C Return Before Taxes	(2.31%)	0.68%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

Going forward, the fund's performance will be compared to the Barclays^® U.S. Aggregate Bond Index, rather than the S&P 500^® Index. The Barclays U.S. Aggregate Bond Index more closely represents the fund's investment strategy, as fixed-income and short-term funds currently represent the majority of the fund's assets.

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] On Class C shares redeemed less than one year after purchase.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Retail | Fidelity Income Replacement 2042 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2042 Fund^SM/Fidelity Income Replacement 2042 Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 40% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

40.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2042.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	51.2%
International Equity Fund	12.8%
Bond Funds
Investment-Grade Bond Funds	25.6%
High Yield Bond Funds	6.5%
Short-Term Funds
Short-Term Funds	3.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.
• "Value" Investing. "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	15.68%	June 30, 2009
Lowest Quarter Return	-16.60%	December 31, 2008
Year-to-Date Return	6.72%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Retail | Fidelity Income Replacement 2042 Fund | Class: Fidelity Income Replacement 2042 Fund

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.68%

Total annual operating expenses

rr_ExpensesOverAssets

0.68%

^[1]

1 year

rr_ExpenseExampleYear01

69

3 years

rr_ExpenseExampleYear03

218

5 years

rr_ExpenseExampleYear05

379

10 years

rr_ExpenseExampleYear10

847

2008

rr_AnnualReturn2008

(30.02%)

2009

rr_AnnualReturn2009

28.91%

2010

rr_AnnualReturn2010

13.75%

2011

rr_AnnualReturn2011

(2.10%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.72%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

15.68%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(16.60%)

Retail | Fidelity Income Replacement 2042 Fund | Return Before Taxes | Class: Fidelity Income Replacement 2042 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2042 Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(2.10%)

Life of class

rr_AverageAnnualReturnSinceInception

0.11%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Retail | Fidelity Income Replacement 2042 Fund | Return After Taxes on Distributions | Class: Fidelity Income Replacement 2042 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2042 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(2.72%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.62%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Retail | Fidelity Income Replacement 2042 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class: Fidelity Income Replacement 2042 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2042 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(1.22%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.28%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Retail | Fidelity Income Replacement 2042 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.64%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From December 31, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

A T C | Fidelity Income Replacement 2026 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2026 Fund^SM/Fidelity Advisor Income Replacement 2026 Fund^SM A, T, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 60% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

60.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2026.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	42.6%
International Equity Fund	6.0%
Bond Funds
Investment-Grade Bond Funds	31.2%
High Yield Bond Funds	4.2%
Short-Term Funds
Short-Term Funds	16.0%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	12.89%	June 30, 2009
Lowest Quarter Return	-13.76%	December 31, 2008
Year-to-Date Return	5.52%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

Going forward, the fund's performance will be compared to the Barclays^® U.S. Aggregate Bond Index, rather than the S&P 500^® Index. The Barclays U.S. Aggregate Bond Index more closely represents the fund's investment strategy, as fixed-income and short-term funds currently represent the majority of the fund's assets.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

A T C | Fidelity Income Replacement 2026 Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.60%

Total annual operating expenses

rr_ExpensesOverAssets

0.85%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

657

3 years

rr_ExpenseExampleYear03

831

5 years

rr_ExpenseExampleYear05

1,019

10 years

rr_ExpenseExampleYear10

1,564

1 year

rr_ExpenseExampleNoRedemptionYear01

657

3 years

rr_ExpenseExampleNoRedemptionYear03

831

5 years

rr_ExpenseExampleNoRedemptionYear05

1,019

10 years

rr_ExpenseExampleNoRedemptionYear10

1,564

2008

rr_AnnualReturn2008

(24.96%)

2009

rr_AnnualReturn2009

24.06%

2010

rr_AnnualReturn2010

11.65%

2011

rr_AnnualReturn2011

(0.58%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.52%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.89%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(13.76%)

A T C | Fidelity Income Replacement 2026 Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.50%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.60%

Total annual operating expenses

rr_ExpensesOverAssets

1.10%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

458

3 years

rr_ExpenseExampleYear03

687

5 years

rr_ExpenseExampleYear05

935

10 years

rr_ExpenseExampleYear10

1,643

1 year

rr_ExpenseExampleNoRedemptionYear01

458

3 years

rr_ExpenseExampleNoRedemptionYear03

687

5 years

rr_ExpenseExampleNoRedemptionYear05

935

10 years

rr_ExpenseExampleNoRedemptionYear10

1,643

A T C | Fidelity Income Replacement 2026 Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[3]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.60%

Total annual operating expenses

rr_ExpensesOverAssets

1.60%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

On Class C shares redeemed less than one year after purchase.

1 year

rr_ExpenseExampleYear01

263

3 years

rr_ExpenseExampleYear03

505

5 years

rr_ExpenseExampleYear05

871

10 years

rr_ExpenseExampleYear10

1,900

1 year

rr_ExpenseExampleNoRedemptionYear01

163

3 years

rr_ExpenseExampleNoRedemptionYear03

505

5 years

rr_ExpenseExampleNoRedemptionYear05

871

10 years

rr_ExpenseExampleNoRedemptionYear10

1,900

A T C | Fidelity Income Replacement 2026 Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(6.30%)

Life of class

rr_AverageAnnualReturnSinceInception

0.07%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2026 Fund | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(4.31%)

Life of class

rr_AverageAnnualReturnSinceInception

0.36%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2026 Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(2.31%)

Life of class

rr_AverageAnnualReturnSinceInception

0.68%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2026 Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(6.83%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.73%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2026 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(3.99%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.35%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2026 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2026 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[3] On Class C shares redeemed less than one year after purchase.

[4] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

A T C | Fidelity Income Replacement 2022 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2022 Fund^SM/Fidelity Advisor Income Replacement 2022 Fund^SM A, T, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 43% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

43.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2022.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	37.0%
International Equity Fund	4.2%
Bond Funds
Investment-Grade Bond Funds	35.0%
High Yield Bond Funds	3.1%
Short-Term Funds
Short-Term Funds	20.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	12.04%	June 30, 2009
Lowest Quarter Return	-12.82%	December 31, 2008
Year-to-Date Return	5.03%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

A T C | Fidelity Income Replacement 2022 Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.57%

Total annual operating expenses

rr_ExpensesOverAssets

0.82%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

654

3 years

rr_ExpenseExampleYear03

822

5 years

rr_ExpenseExampleYear05

1,004

10 years

rr_ExpenseExampleYear10

1,530

1 year

rr_ExpenseExampleNoRedemptionYear01

654

3 years

rr_ExpenseExampleNoRedemptionYear03

822

5 years

rr_ExpenseExampleNoRedemptionYear05

1,004

10 years

rr_ExpenseExampleNoRedemptionYear10

1,530

2008

rr_AnnualReturn2008

(23.21%)

2009

rr_AnnualReturn2009

22.81%

2010

rr_AnnualReturn2010

10.98%

2011

rr_AnnualReturn2011

0.11%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.03%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.04%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(12.82%)

A T C | Fidelity Income Replacement 2022 Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.50%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.57%

Total annual operating expenses

rr_ExpensesOverAssets

1.07%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

455

3 years

rr_ExpenseExampleYear03

678

5 years

rr_ExpenseExampleYear05

919

10 years

rr_ExpenseExampleYear10

1,610

1 year

rr_ExpenseExampleNoRedemptionYear01

455

3 years

rr_ExpenseExampleNoRedemptionYear03

678

5 years

rr_ExpenseExampleNoRedemptionYear05

919

10 years

rr_ExpenseExampleNoRedemptionYear10

1,610

A T C | Fidelity Income Replacement 2022 Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[3]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.57%

Total annual operating expenses

rr_ExpensesOverAssets

1.57%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

On Class C shares redeemed less than one year after purchase.

1 year

rr_ExpenseExampleYear01

260

3 years

rr_ExpenseExampleYear03

496

5 years

rr_ExpenseExampleYear05

855

10 years

rr_ExpenseExampleYear10

1,867

1 year

rr_ExpenseExampleNoRedemptionYear01

160

3 years

rr_ExpenseExampleNoRedemptionYear03

496

5 years

rr_ExpenseExampleNoRedemptionYear05

855

10 years

rr_ExpenseExampleNoRedemptionYear10

1,867

A T C | Fidelity Income Replacement 2022 Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(5.64%)

Life of class

rr_AverageAnnualReturnSinceInception

0.36%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2022 Fund | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(3.61%)

Life of class

rr_AverageAnnualReturnSinceInception

0.66%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2022 Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(1.62%)

Life of class

rr_AverageAnnualReturnSinceInception

0.98%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2022 Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(6.21%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.48%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2022 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(3.58%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.15%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2022 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[3] On Class C shares redeemed less than one year after purchase.

[4] From August 30, 2007.

XML

Retail | Fidelity Income Replacement 2034 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2034 Fund^SM/Fidelity Income Replacement 2034 Fund

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Retail Fidelity Income Replacement 2034 Fund Class: Fidelity Income Replacement 2034 Fund
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Retail Fidelity Income Replacement 2034 Fund Class: Fidelity Income Replacement 2034 Fund
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.64%
Total annual operating expenses	[1]	0.64%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Retail Fidelity Income Replacement 2034 Fund Class: Fidelity Income Replacement 2034 Fund
1 year	65
3 years	205
5 years	357
10 years	798

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 34% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2034.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	46.9%
International Equity Fund	9.2%
Bond Funds
Investment-Grade Bond Funds	27.3%
High Yield Bond Funds	5.3%
Short-Term Funds
Short-Term Funds	11.3%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	14.25%	June 30, 2009
Lowest Quarter Return	-15.15%	December 31, 2008
Year-to-Date Return	6.13%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Retail Fidelity Income Replacement 2034 Fund	Past 1 year	Life of class		Inception Date
Class: Fidelity Income Replacement 2034 Fund Return Before Taxes	(1.23%)	1.18%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2034 Fund Return After Taxes on Distributions	(1.86%)	0.38%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2034 Fund Return After Taxes on Distributions and Sale of Fund Shares	(0.67%)	0.61%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Retail | Fidelity Income Replacement 2020 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2020 Fund^SM/Fidelity Income Replacement 2020 Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 35% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

35.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2020.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	32.1%
International Equity Fund	3.3%
Bond Funds
Investment-Grade Bond Funds	37.7%
High Yield Bond Funds	2.2%
Short-Term Funds
Short-Term Funds	24.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	11.53%	June 30, 2009
Lowest Quarter Return	-12.11%	December 31, 2008
Year-to-Date Return	4.74%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Retail | Fidelity Income Replacement 2020 Fund | Class: Fidelity Income Replacement 2020 Fund

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.55%

Total annual operating expenses

rr_ExpensesOverAssets

0.55%

^[1]

1 year

rr_ExpenseExampleYear01

56

3 years

rr_ExpenseExampleYear03

176

5 years

rr_ExpenseExampleYear05

307

10 years

rr_ExpenseExampleYear10

689

2008

rr_AnnualReturn2008

(21.90%)

2009

rr_AnnualReturn2009

22.11%

2010

rr_AnnualReturn2010

10.65%

2011

rr_AnnualReturn2011

0.87%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

4.74%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

11.53%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(12.11%)

Retail | Fidelity Income Replacement 2020 Fund | Return Before Taxes | Class: Fidelity Income Replacement 2020 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2020 Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

0.87%

Life of class

rr_AverageAnnualReturnSinceInception

2.10%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2020 Fund | Return After Taxes on Distributions | Class: Fidelity Income Replacement 2020 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2020 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

0.15%

Life of class

rr_AverageAnnualReturnSinceInception

1.18%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2020 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class: Fidelity Income Replacement 2020 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2020 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

0.64%

Life of class

rr_AverageAnnualReturnSinceInception

1.29%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2020 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Retail | Fidelity Income Replacement 2024 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2024 Fund^SM/Fidelity Income Replacement 2024 Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 65% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

65.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2024.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	40.3%
International Equity Fund	5.2%
Bond Funds
Investment-Grade Bond Funds	32.9%
High Yield Bond Funds	3.7%
Short-Term Funds
Short-Term Funds	17.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	12.56%	June 30, 2009
Lowest Quarter Return	-13.28%	December 31, 2008
Year-to-Date Return	5.46%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

Going forward, the fund's performance will be compared to the Barclays^® U.S. Aggregate Bond Index, rather than the S&P 500^® Index. The Barclays U.S. Aggregate Bond Index more closely represents the fund's investment strategy, as fixed-income and short-term funds currently represent the majority of the fund's assets.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Retail | Fidelity Income Replacement 2024 Fund | Class: Fidelity Income Replacement 2024 Fund

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.59%

Total annual operating expenses

rr_ExpensesOverAssets

0.59%

^[1]

1 year

rr_ExpenseExampleYear01

60

3 years

rr_ExpenseExampleYear03

189

5 years

rr_ExpenseExampleYear05

329

10 years

rr_ExpenseExampleYear10

738

2008

rr_AnnualReturn2008

(24.02%)

2009

rr_AnnualReturn2009

23.86%

2010

rr_AnnualReturn2010

11.62%

2011

rr_AnnualReturn2011

0.00%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.46%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.56%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(13.28%)

Retail | Fidelity Income Replacement 2024 Fund | Return Before Taxes | Class: Fidelity Income Replacement 2024 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2024 Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

none

Life of class

rr_AverageAnnualReturnSinceInception

1.88%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2024 Fund | Return After Taxes on Distributions | Class: Fidelity Income Replacement 2024 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2024 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(0.67%)

Life of class

rr_AverageAnnualReturnSinceInception

0.96%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2024 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class: Fidelity Income Replacement 2024 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2024 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

0.11%

Life of class

rr_AverageAnnualReturnSinceInception

1.10%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2024 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2024 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

A T C | Fidelity Income Replacement 2020 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2020 Fund^SM/Fidelity Advisor Income Replacement 2020 Fund^SM A, T, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 35% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

35.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2020.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	32.1%
International Equity Fund	3.3%
Bond Funds
Investment-Grade Bond Funds	37.7%
High Yield Bond Funds	2.2%
Short-Term Funds
Short-Term Funds	24.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	11.46%	June 30, 2009
Lowest Quarter Return	-12.17%	December 31, 2008
Year-to-Date Return	4.61%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

A T C | Fidelity Income Replacement 2020 Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.55%

Total annual operating expenses

rr_ExpensesOverAssets

0.80%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

652

3 years

rr_ExpenseExampleYear03

816

5 years

rr_ExpenseExampleYear05

994

10 years

rr_ExpenseExampleYear10

1,508

1 year

rr_ExpenseExampleNoRedemptionYear01

652

3 years

rr_ExpenseExampleNoRedemptionYear03

816

5 years

rr_ExpenseExampleNoRedemptionYear05

994

10 years

rr_ExpenseExampleNoRedemptionYear10

1,508

2008

rr_AnnualReturn2008

(22.10%)

2009

rr_AnnualReturn2009

21.78%

2010

rr_AnnualReturn2010

10.40%

2011

rr_AnnualReturn2011

0.61%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

4.61%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

11.46%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(12.17%)

A T C | Fidelity Income Replacement 2020 Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.50%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.55%

Total annual operating expenses

rr_ExpensesOverAssets

1.05%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

453

3 years

rr_ExpenseExampleYear03

672

5 years

rr_ExpenseExampleYear05

909

10 years

rr_ExpenseExampleYear10

1,588

1 year

rr_ExpenseExampleNoRedemptionYear01

453

3 years

rr_ExpenseExampleNoRedemptionYear03

672

5 years

rr_ExpenseExampleNoRedemptionYear05

909

10 years

rr_ExpenseExampleNoRedemptionYear10

1,588

A T C | Fidelity Income Replacement 2020 Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[3]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.55%

Total annual operating expenses

rr_ExpensesOverAssets

1.55%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

On Class C shares redeemed less than one year after purchase.

1 year

rr_ExpenseExampleYear01

258

3 years

rr_ExpenseExampleYear03

490

5 years

rr_ExpenseExampleYear05

845

10 years

rr_ExpenseExampleYear10

1,845

1 year

rr_ExpenseExampleNoRedemptionYear01

158

3 years

rr_ExpenseExampleNoRedemptionYear03

490

5 years

rr_ExpenseExampleNoRedemptionYear05

845

10 years

rr_ExpenseExampleNoRedemptionYear10

1,845

A T C | Fidelity Income Replacement 2020 Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(5.17%)

Life of class

rr_AverageAnnualReturnSinceInception

0.47%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2020 Fund | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(3.15%)

Life of class

rr_AverageAnnualReturnSinceInception

0.77%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2020 Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(1.16%)

Life of class

rr_AverageAnnualReturnSinceInception

1.08%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2020 Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(5.77%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.35%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2020 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(3.29%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.05%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2020 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[3] On Class C shares redeemed less than one year after purchase.

[4] From August 30, 2007.

XML

A T C | Fidelity Income Replacement 2018 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2018 Fund^SM/Fidelity Advisor Income Replacement 2018 Fund^SM A, T, C

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees A T C Fidelity Income Replacement 2018 Fund	Class A		Class T		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	5.75%		3.50%		none
Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)	none	[1]	none	[1]	1.00%	[2]

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses A T C Fidelity Income Replacement 2018 Fund		Class A	Class T	Class C
Management fee		none	none	none
Distribution and/or Service (12b-1) fees		0.25%	0.50%	1.00%
Other expenses		none	none	none
Acquired fund fees and expenses		0.51%	0.51%	0.51%
Total annual operating expenses	[1]	0.76%	1.01%	1.51%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Sell All Shares

Expense Example A T C Fidelity Income Replacement 2018 Fund (USD $)	Class A	Class T	Class C
1 year	648	449	254
3 years	804	660	477
5 years	973	888	824
10 years	1,463	1,543	1,802

Hold Shares

Expense Example, No Redemption A T C Fidelity Income Replacement 2018 Fund (USD $)	Class A	Class T	Class C
1 year	648	449	154
3 years	804	660	477
5 years	973	888	824
10 years	1,463	1,543	1,802

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 44% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2018.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	25.5%
International Equity Fund	2.3%
Bond Funds
Investment-Grade Bond Funds	41.5%
High Yield Bond Funds	0.0%
Short-Term Funds
Short-Term Funds	30.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	10.57%	June 30, 2009
Lowest Quarter Return	-11.16%	December 31, 2008
Year-to-Date Return	4.03%	June 30, 2012

Average Annual Returns

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns A T C Fidelity Income Replacement 2018 Fund	Past 1 year	Life of class		Inception Date
Class A Return Before Taxes	(4.62%)	0.68%	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions	(5.23%)	(0.20%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions and Sale of Fund Shares	(2.94%)	0.08%	[1]	Aug. 30, 2007
Class T Return Before Taxes	(2.58%)	0.98%	[1]	Aug. 30, 2007
Class C Return Before Taxes	(0.56%)	1.30%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] On Class C shares redeemed less than one year after purchase.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Retail | Fidelity Income Replacement 2042 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2042 Fund^SM/Fidelity Income Replacement 2042 Fund

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Retail Fidelity Income Replacement 2042 Fund Class: Fidelity Income Replacement 2042 Fund
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Retail Fidelity Income Replacement 2042 Fund Class: Fidelity Income Replacement 2042 Fund
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.68%
Total annual operating expenses	[1]	0.68%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Retail Fidelity Income Replacement 2042 Fund Class: Fidelity Income Replacement 2042 Fund
1 year	69
3 years	218
5 years	379
10 years	847

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 40% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2042.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	51.2%
International Equity Fund	12.8%
Bond Funds
Investment-Grade Bond Funds	25.6%
High Yield Bond Funds	6.5%
Short-Term Funds
Short-Term Funds	3.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.
• "Value" Investing. "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	15.68%	June 30, 2009
Lowest Quarter Return	-16.60%	December 31, 2008
Year-to-Date Return	6.72%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Retail Fidelity Income Replacement 2042 Fund	Past 1 year	Life of class		Inception Date
Class: Fidelity Income Replacement 2042 Fund Return Before Taxes	(2.10%)	0.11%	[1]	Dec. 31, 2007
Class: Fidelity Income Replacement 2042 Fund Return After Taxes on Distributions	(2.72%)	(0.62%)	[1]	Dec. 31, 2007
Class: Fidelity Income Replacement 2042 Fund Return After Taxes on Distributions and Sale of Fund Shares	(1.22%)	(0.28%)	[1]	Dec. 31, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.64%)	[1]	Dec. 31, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From December 31, 2007.

XML

Inst | Fidelity Income Replacement 2018 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2018 Fund^SM/Fidelity Advisor Income Replacement 2018 Fund^SM Institutional

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Inst Fidelity Income Replacement 2018 Fund Institutional Class
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Inst Fidelity Income Replacement 2018 Fund Institutional Class
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.51%
Total annual operating expenses	[1]	0.51%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Inst Fidelity Income Replacement 2018 Fund Institutional Class
1 year	52
3 years	164
5 years	285
10 years	640

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 44% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2018.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	25.5%
International Equity Fund	2.3%
Bond Funds
Investment-Grade Bond Funds	41.5%
High Yield Bond Funds	0.0%
Short-Term Funds
Short-Term Funds	30.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	10.63%	June 30, 2009
Lowest Quarter Return	-11.12%	December 31, 2008
Year-to-Date Return	4.16%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Inst Fidelity Income Replacement 2018 Fund	Past 1 year	Life of class		Inception Date
Institutional Class Return Before Taxes	1.46%	2.32%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions	0.72%	1.33%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions and Sale of Fund Shares	1.02%	1.42%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Inst | Fidelity Income Replacement 2036 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2036 Fund^SM/Fidelity Advisor Income Replacement 2036 Fund^SM Institutional

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Inst Fidelity Income Replacement 2036 Fund Institutional Class
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Inst Fidelity Income Replacement 2036 Fund Institutional Class
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.65%
Total annual operating expenses	[1]	0.65%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Inst Fidelity Income Replacement 2036 Fund Institutional Class
1 year	66
3 years	208
5 years	362
10 years	810

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 62% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2036.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	47.8%
International Equity Fund	10.0%
Bond Funds
Investment-Grade Bond Funds	26.8%
High Yield Bond Funds	5.5%
Short-Term Funds
Short-Term Funds	9.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	14.68%	June 30, 2009
Lowest Quarter Return	-15.63%	December 31, 2008
Year-to-Date Return	6.23%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Inst Fidelity Income Replacement 2036 Fund	Past 1 year	Life of class		Inception Date
Institutional Class Return Before Taxes	(1.45%)	1.07%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions	(2.06%)	0.19%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions and Sale of Fund Shares	(0.81%)	0.45%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

A T C | Fidelity Income Replacement 2024 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2024 Fund^SM/Fidelity Advisor Income Replacement 2024 Fund^SM A, T, C

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees A T C Fidelity Income Replacement 2024 Fund	Class A		Class T		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	5.75%		3.50%		none
Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)	none	[1]	none	[1]	1.00%	[2]

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses A T C Fidelity Income Replacement 2024 Fund		Class A	Class T	Class C
Management fee		none	none	none
Distribution and/or Service (12b-1) fees		0.25%	0.50%	1.00%
Other expenses		none	none	none
Acquired fund fees and expenses		0.59%	0.59%	0.59%
Total annual operating expenses	[1]	0.84%	1.09%	1.59%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Sell All Shares

Expense Example A T C Fidelity Income Replacement 2024 Fund (USD $)	Class A	Class T	Class C
1 year	656	457	262
3 years	828	684	502
5 years	1,014	930	866
10 years	1,553	1,632	1,889

Hold Shares

Expense Example, No Redemption A T C Fidelity Income Replacement 2024 Fund (USD $)	Class A	Class T	Class C
1 year	656	457	162
3 years	828	684	502
5 years	1,014	930	866
10 years	1,553	1,632	1,889

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 65% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2024.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	40.3%
International Equity Fund	5.2%
Bond Funds
Investment-Grade Bond Funds	32.9%
High Yield Bond Funds	3.7%
Short-Term Funds
Short-Term Funds	17.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	12.49%	June 30, 2009
Lowest Quarter Return	-13.35%	December 31, 2008
Year-to-Date Return	5.33%	June 30, 2012

Average Annual Returns

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns A T C Fidelity Income Replacement 2024 Fund	Past 1 year	Life of class		Inception Date
Class A Return Before Taxes	(5.99%)	0.25%	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions	(6.54%)	(0.57%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions and Sale of Fund Shares	(3.79%)	(0.23%)	[1]	Aug. 30, 2007
Class T Return Before Taxes	(3.97%)	0.55%	[1]	Aug. 30, 2007
Class C Return Before Taxes	(1.97%)	0.86%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

Going forward, the fund's performance will be compared to the Barclays^® U.S. Aggregate Bond Index, rather than the S&P 500^® Index. The Barclays U.S. Aggregate Bond Index more closely represents the fund's investment strategy, as fixed-income and short-term funds currently represent the majority of the fund's assets.

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] On Class C shares redeemed less than one year after purchase.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Document and Entity Information	12 Months Ended
	Sep. 29, 2012
Risk/Return:
Document Type	485BPOS
Document Period End Date	Jul. 31, 2012
Registrant Name	FIDELITY INCOME FUND /MA/
Central Index Key	0000751199
Amendment Flag	false
Document Creation Date	Sep. 27, 2012
Document Effective Date	Sep. 29, 2012
Prospectus Date	Sep. 29, 2012

XML

Inst | Fidelity Income Replacement 2030 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2030 Fund^SM/Fidelity Advisor Income Replacement 2030 Fund^SM Institutional

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Inst Fidelity Income Replacement 2030 Fund Institutional Class
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Inst Fidelity Income Replacement 2030 Fund Institutional Class
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.62%
Total annual operating expenses	[1]	0.62%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Inst Fidelity Income Replacement 2030 Fund Institutional Class
1 year	63
3 years	199
5 years	346
10 years	774

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 50% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2030.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	45.3%
International Equity Fund	7.5%
Bond Funds
Investment-Grade Bond Funds	29.1%
High Yield Bond Funds	4.8%
Short-Term Funds
Short-Term Funds	13.3%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	13.58%	June 30, 2009
Lowest Quarter Return	-14.34%	December 31, 2008
Year-to-Date Return	5.94%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Inst Fidelity Income Replacement 2030 Fund	Past 1 year	Life of class		Inception Date
Institutional Class Return Before Taxes	(0.79%)	1.50%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions	(1.43%)	0.66%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions and Sale of Fund Shares	(0.40%)	0.84%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

A T C | Fidelity Income Replacement 2032 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2032 Fund^SM/Fidelity Advisor Income Replacement 2032 Fund^SM A, T, C

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees A T C Fidelity Income Replacement 2032 Fund	Class A		Class T		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	5.75%		3.50%		none
Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)	none	[1]	none	[1]	1.00%	[2]

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses A T C Fidelity Income Replacement 2032 Fund		Class A	Class T	Class C
Management fee		none	none	none
Distribution and/or Service (12b-1) fees		0.25%	0.50%	1.00%
Tax expense	[1]	0.12%	0.12%	0.12%
Remainder of other expenses		none	none	none
Total other expenses		0.12%	0.12%	0.12%
Acquired fund fees and expenses		0.63%	0.63%	0.63%
Total annual operating expenses	[2]	1.00%	1.25%	1.75%
Fee waiver and/or expense reimbursement	[1]	0.12%	0.12%	0.12%
Total annual operating expenses after fee waiver and/or expense reimbursement	[2]	0.88%	1.13%	1.63%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Sell All Shares

Expense Example A T C Fidelity Income Replacement 2032 Fund (USD $)	Class A	Class T	Class C
1 year	660	461	266
3 years	840	697	514
5 years	1,035	950	887
10 years	1,597	1,677	1,933

Hold Shares

Expense Example, No Redemption A T C Fidelity Income Replacement 2032 Fund (USD $)	Class A	Class T	Class C
1 year	660	461	166
3 years	840	697	514
5 years	1,035	950	887
10 years	1,597	1,677	1,933

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 37% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2032.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	46.2%
International Equity Fund	8.4%
Bond Funds
Investment-Grade Bond Funds	27.9%
High Yield Bond Funds	5.0%
Short-Term Funds
Short-Term Funds	12.5%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	13.84%	June 30, 2009
Lowest Quarter Return	-14.83%	December 31, 2008
Year-to-Date Return	5.87%	June 30, 2012

Average Annual Returns

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns A T C Fidelity Income Replacement 2032 Fund	Past 1 year	Life of class		Inception Date
Class A Return Before Taxes	(6.90%)	(0.25%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions	(7.43%)	(1.04%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions and Sale of Fund Shares	(4.37%)	(0.61%)	[1]	Aug. 30, 2007
Class T Return Before Taxes	(4.93%)	0.04%	[1]	Aug. 30, 2007
Class C Return Before Taxes	(2.94%)	0.36%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] On Class C shares redeemed less than one year after purchase.

[1] Represents excise tax liability on undistributed long-term capital gain, which Strategic Advisers or its affiliates has contractually agreed to reimburse. The obligation to reimburse this amount may not be terminated and will remain in effect until the fund is reimbursed for the full amount.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Inst | Fidelity Income Replacement 2038 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2038 Fund^SM/Fidelity Advisor Income Replacement 2038 Fund^SM Institutional

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Inst Fidelity Income Replacement 2038 Fund Institutional Class
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Inst Fidelity Income Replacement 2038 Fund Institutional Class
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.66%
Total annual operating expenses	[1]	0.66%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Inst Fidelity Income Replacement 2038 Fund Institutional Class
1 year	67
3 years	211
5 years	368
10 years	822

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 57% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2038.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	48.7%
International Equity Fund	10.9%
Bond Funds
Investment-Grade Bond Funds	26.2%
High Yield Bond Funds	5.8%
Short-Term Funds
Short-Term Funds	8.4%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	15.19%	June 30, 2009
Lowest Quarter Return	-16.18%	December 31, 2008
Year-to-Date Return	6.35%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Inst Fidelity Income Replacement 2038 Fund	Past 1 year	Life of class		Inception Date
Institutional Class Return Before Taxes	(1.68%)	0.10%	[1]	Dec. 31, 2007
Institutional Class Return After Taxes on Distributions	(2.31%)	(0.65%)	[1]	Dec. 31, 2007
Institutional Class Return After Taxes on Distributions and Sale of Fund Shares	(0.96%)	(0.30%)	[1]	Dec. 31, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.64%)	[1]	Dec. 31, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From December 31, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

A T C | Fidelity Income Replacement 2034 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2034 Fund^SM/Fidelity Advisor Income Replacement 2034 Fund^SM A, T, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 34% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

34.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2034.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	46.9%
International Equity Fund	9.2%
Bond Funds
Investment-Grade Bond Funds	27.3%
High Yield Bond Funds	5.3%
Short-Term Funds
Short-Term Funds	11.3%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	14.21%	June 30, 2009
Lowest Quarter Return	-15.21%	December 31, 2008
Year-to-Date Return	5.99%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

A T C | Fidelity Income Replacement 2034 Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.64%

Total annual operating expenses

rr_ExpensesOverAssets

0.89%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

661

3 years

rr_ExpenseExampleYear03

843

5 years

rr_ExpenseExampleYear05

1,040

10 years

rr_ExpenseExampleYear10

1,608

1 year

rr_ExpenseExampleNoRedemptionYear01

661

3 years

rr_ExpenseExampleNoRedemptionYear03

843

5 years

rr_ExpenseExampleNoRedemptionYear05

1,040

10 years

rr_ExpenseExampleNoRedemptionYear10

1,608

2008

rr_AnnualReturn2008

(27.84%)

2009

rr_AnnualReturn2009

26.08%

2010

rr_AnnualReturn2010

12.44%

2011

rr_AnnualReturn2011

(1.46%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.99%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

14.21%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(15.21%)

A T C | Fidelity Income Replacement 2034 Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.50%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.64%

Total annual operating expenses

rr_ExpensesOverAssets

1.14%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

462

3 years

rr_ExpenseExampleYear03

700

5 years

rr_ExpenseExampleYear05

956

10 years

rr_ExpenseExampleYear10

1,688

1 year

rr_ExpenseExampleNoRedemptionYear01

462

3 years

rr_ExpenseExampleNoRedemptionYear03

700

5 years

rr_ExpenseExampleNoRedemptionYear05

956

10 years

rr_ExpenseExampleNoRedemptionYear10

1,688

A T C | Fidelity Income Replacement 2034 Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[3]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.64%

Total annual operating expenses

rr_ExpensesOverAssets

1.64%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

On Class C shares redeemed less than one year after purchase.

1 year

rr_ExpenseExampleYear01

267

3 years

rr_ExpenseExampleYear03

517

5 years

rr_ExpenseExampleYear05

892

10 years

rr_ExpenseExampleYear10

1,944

1 year

rr_ExpenseExampleNoRedemptionYear01

167

3 years

rr_ExpenseExampleNoRedemptionYear03

517

5 years

rr_ExpenseExampleNoRedemptionYear05

892

10 years

rr_ExpenseExampleNoRedemptionYear10

1,944

A T C | Fidelity Income Replacement 2034 Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(7.13%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.43%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2034 Fund | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(5.16%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.14%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2034 Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(3.15%)

Life of class

rr_AverageAnnualReturnSinceInception

0.18%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2034 Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(7.64%)

Life of class

rr_AverageAnnualReturnSinceInception

(1.13%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2034 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(4.51%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.71%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2034 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[3] On Class C shares redeemed less than one year after purchase.

[4] From August 30, 2007.

XML

Retail | Fidelity Income Replacement 2022 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2022 Fund^SM/Fidelity Income Replacement 2022 Fund

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Retail Fidelity Income Replacement 2022 Fund Class: Fidelity Income Replacement 2022 Fund
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Retail Fidelity Income Replacement 2022 Fund Class: Fidelity Income Replacement 2022 Fund
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.57%
Total annual operating expenses	[1]	0.57%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Retail Fidelity Income Replacement 2022 Fund Class: Fidelity Income Replacement 2022 Fund
1 year	58
3 years	183
5 years	318
10 years	714

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 43% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2022.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	37.0%
International Equity Fund	4.2%
Bond Funds
Investment-Grade Bond Funds	35.0%
High Yield Bond Funds	3.1%
Short-Term Funds
Short-Term Funds	20.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	12.11%	June 30, 2009
Lowest Quarter Return	-12.77%	December 31, 2008
Year-to-Date Return	5.16%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Retail Fidelity Income Replacement 2022 Fund	Past 1 year	Life of class		Inception Date
Class: Fidelity Income Replacement 2022 Fund Return Before Taxes	0.38%	2.00%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2022 Fund Return After Taxes on Distributions	(0.30%)	1.06%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2022 Fund Return After Taxes on Distributions and Sale of Fund Shares	0.34%	1.19%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Inst | Fidelity Income Replacement 2034 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2034 Fund^SM/Fidelity Advisor Income Replacement 2034 Fund^SM Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 34% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

34.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2034.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	46.9%
International Equity Fund	9.2%
Bond Funds
Investment-Grade Bond Funds	27.3%
High Yield Bond Funds	5.3%
Short-Term Funds
Short-Term Funds	11.3%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	14.28%	June 30, 2009
Lowest Quarter Return	-15.17%	December 31, 2008
Year-to-Date Return	6.11%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Inst | Fidelity Income Replacement 2034 Fund | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.64%

Total annual operating expenses

rr_ExpensesOverAssets

0.64%

^[1]

1 year

rr_ExpenseExampleYear01

65

3 years

rr_ExpenseExampleYear03

205

5 years

rr_ExpenseExampleYear05

357

10 years

rr_ExpenseExampleYear10

798

2008

rr_AnnualReturn2008

(27.66%)

2009

rr_AnnualReturn2009

26.40%

2010

rr_AnnualReturn2010

12.71%

2011

rr_AnnualReturn2011

(1.21%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.11%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

14.28%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(15.17%)

Inst | Fidelity Income Replacement 2034 Fund | Return Before Taxes | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(1.21%)

Life of class

rr_AverageAnnualReturnSinceInception

1.19%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2034 Fund | Return After Taxes on Distributions | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(1.84%)

Life of class

rr_AverageAnnualReturnSinceInception

0.39%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2034 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.66%)

Life of class

rr_AverageAnnualReturnSinceInception

0.61%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2034 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Retail | Fidelity Income Replacement 2018 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2018 Fund^SM/Fidelity Income Replacement 2018 Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 44% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

44.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2018.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	25.5%
International Equity Fund	2.3%
Bond Funds
Investment-Grade Bond Funds	41.5%
High Yield Bond Funds	0.0%
Short-Term Funds
Short-Term Funds	30.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	10.63%	June 30, 2009
Lowest Quarter Return	-11.10%	December 31, 2008
Year-to-Date Return	4.16%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Retail | Fidelity Income Replacement 2018 Fund | Class: Fidelity Income Replacement 2018 Fund

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.51%

Total annual operating expenses

rr_ExpensesOverAssets

0.51%

^[1]

1 year

rr_ExpenseExampleYear01

52

3 years

rr_ExpenseExampleYear03

164

5 years

rr_ExpenseExampleYear05

285

10 years

rr_ExpenseExampleYear10

640

2008

rr_AnnualReturn2008

(20.09%)

2009

rr_AnnualReturn2009

20.65%

2010

rr_AnnualReturn2010

9.84%

2011

rr_AnnualReturn2011

1.46%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

4.16%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

10.63%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(11.10%)

Retail | Fidelity Income Replacement 2018 Fund | Return Before Taxes | Class: Fidelity Income Replacement 2018 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2018 Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

1.46%

Life of class

rr_AverageAnnualReturnSinceInception

2.32%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2018 Fund | Return After Taxes on Distributions | Class: Fidelity Income Replacement 2018 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2018 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

0.72%

Life of class

rr_AverageAnnualReturnSinceInception

1.33%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2018 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class: Fidelity Income Replacement 2018 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2018 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

1.02%

Life of class

rr_AverageAnnualReturnSinceInception

1.42%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2018 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

^[2]

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

Retail | Fidelity Income Replacement 2020 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2020 Fund^SM/Fidelity Income Replacement 2020 Fund

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Retail Fidelity Income Replacement 2020 Fund Class: Fidelity Income Replacement 2020 Fund
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Retail Fidelity Income Replacement 2020 Fund Class: Fidelity Income Replacement 2020 Fund
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.55%
Total annual operating expenses	[1]	0.55%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Retail Fidelity Income Replacement 2020 Fund Class: Fidelity Income Replacement 2020 Fund
1 year	56
3 years	176
5 years	307
10 years	689

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 35% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2020.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	32.1%
International Equity Fund	3.3%
Bond Funds
Investment-Grade Bond Funds	37.7%
High Yield Bond Funds	2.2%
Short-Term Funds
Short-Term Funds	24.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	11.53%	June 30, 2009
Lowest Quarter Return	-12.11%	December 31, 2008
Year-to-Date Return	4.74%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Retail Fidelity Income Replacement 2020 Fund	Past 1 year	Life of class		Inception Date
Class: Fidelity Income Replacement 2020 Fund Return Before Taxes	0.87%	2.10%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2020 Fund Return After Taxes on Distributions	0.15%	1.18%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2020 Fund Return After Taxes on Distributions and Sale of Fund Shares	0.64%	1.29%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Retail | Fidelity Income Replacement 2032 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2032 Fund^SM/Fidelity Income Replacement 2032 Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 37% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

37.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2032.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	46.2%
International Equity Fund	8.4%
Bond Funds
Investment-Grade Bond Funds	27.9%
High Yield Bond Funds	5.0%
Short-Term Funds
Short-Term Funds	12.5%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	13.91%	June 30, 2009
Lowest Quarter Return	-14.79%	December 31, 2008
Year-to-Date Return	6.00%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Retail | Fidelity Income Replacement 2032 Fund | Class: Fidelity Income Replacement 2032 Fund

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Tax expense

rr_Component1OtherExpensesOverAssets

0.12%

^[1]

Remainder of other expenses

rr_Component2OtherExpensesOverAssets

none

Total other expenses

rr_OtherExpensesOverAssets

0.12%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.63%

Total annual operating expenses

rr_ExpensesOverAssets

0.75%

^[2]

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.12%

^[1]

Total annual operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

0.63%

^[2]

1 year

rr_ExpenseExampleYear01

64

3 years

rr_ExpenseExampleYear03

202

5 years

rr_ExpenseExampleYear05

351

10 years

rr_ExpenseExampleYear10

786

2008

rr_AnnualReturn2008

(26.78%)

2009

rr_AnnualReturn2009

25.90%

2010

rr_AnnualReturn2010

12.52%

2011

rr_AnnualReturn2011

(0.98%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.00%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.91%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(14.79%)

Retail | Fidelity Income Replacement 2032 Fund | Return Before Taxes | Class: Fidelity Income Replacement 2032 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2032 Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(0.98%)

Life of class

rr_AverageAnnualReturnSinceInception

1.37%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2032 Fund | Return After Taxes on Distributions | Class: Fidelity Income Replacement 2032 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2032 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(1.62%)

Life of class

rr_AverageAnnualReturnSinceInception

0.48%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2032 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class: Fidelity Income Replacement 2032 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2032 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.51%)

Life of class

rr_AverageAnnualReturnSinceInception

0.71%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Retail | Fidelity Income Replacement 2032 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Represents excise tax liability on undistributed long-term capital gain, which Strategic Advisers or its affiliates has contractually agreed to reimburse. The obligation to reimburse this amount may not be terminated and will remain in effect until the fund is reimbursed for the full amount.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[3] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Retail | Fidelity Income Replacement 2038 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2038 Fund^SM/Fidelity Income Replacement 2038 Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 57% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

57.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2038.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	48.7%
International Equity Fund	10.9%
Bond Funds
Investment-Grade Bond Funds	26.2%
High Yield Bond Funds	5.8%
Short-Term Funds
Short-Term Funds	8.4%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	15.22%	June 30, 2009
Lowest Quarter Return	-16.16%	December 31, 2008
Year-to-Date Return	6.38%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Retail | Fidelity Income Replacement 2038 Fund | Class: Fidelity Income Replacement 2038 Fund

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.66%

Total annual operating expenses

rr_ExpensesOverAssets

0.66%

^[1]

1 year

rr_ExpenseExampleYear01

67

3 years

rr_ExpenseExampleYear03

211

5 years

rr_ExpenseExampleYear05

368

10 years

rr_ExpenseExampleYear10

822

2008

rr_AnnualReturn2008

(29.46%)

2009

rr_AnnualReturn2009

27.85%

2010

rr_AnnualReturn2010

13.23%

2011

rr_AnnualReturn2011

(1.70%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.38%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

15.22%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(16.16%)

Retail | Fidelity Income Replacement 2038 Fund | Return Before Taxes | Class: Fidelity Income Replacement 2038 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2038 Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(1.70%)

Life of class

rr_AverageAnnualReturnSinceInception

0.10%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Retail | Fidelity Income Replacement 2038 Fund | Return After Taxes on Distributions | Class: Fidelity Income Replacement 2038 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2038 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(2.33%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.65%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Retail | Fidelity Income Replacement 2038 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class: Fidelity Income Replacement 2038 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2038 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.97%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.30%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Retail | Fidelity Income Replacement 2038 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.64%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From December 31, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Retail | Fidelity Income Replacement 2040 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2040 Fund^SM/Fidelity Income Replacement 2040 Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 63% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

63.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2040.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	49.9%
International Equity Fund	12.0%
Bond Funds
Investment-Grade Bond Funds	25.8%
High Yield Bond Funds	6.2%
Short-Term Funds
Short-Term Funds	6.1%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.
• "Value" Investing. "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	15.49%	June 30, 2009
Lowest Quarter Return	-16.44%	December 31, 2008
Year-to-Date Return	6.58%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Retail | Fidelity Income Replacement 2040 Fund | Class: Fidelity Income Replacement 2040 Fund

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.67%

Total annual operating expenses

rr_ExpensesOverAssets

0.67%

^[1]

1 year

rr_ExpenseExampleYear01

68

3 years

rr_ExpenseExampleYear03

214

5 years

rr_ExpenseExampleYear05

373

10 years

rr_ExpenseExampleYear10

835

2008

rr_AnnualReturn2008

(29.79%)

2009

rr_AnnualReturn2009

28.44%

2010

rr_AnnualReturn2010

13.67%

2011

rr_AnnualReturn2011

(1.93%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.58%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

15.49%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(16.44%)

Retail | Fidelity Income Replacement 2040 Fund | Return Before Taxes | Class: Fidelity Income Replacement 2040 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2040 Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(1.93%)

Life of class

rr_AverageAnnualReturnSinceInception

0.13%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Retail | Fidelity Income Replacement 2040 Fund | Return After Taxes on Distributions | Class: Fidelity Income Replacement 2040 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2040 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(2.55%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.61%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Retail | Fidelity Income Replacement 2040 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class: Fidelity Income Replacement 2040 Fund

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Income Replacement 2040 Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(1.11%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.27%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

Retail | Fidelity Income Replacement 2040 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.64%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From December 31, 2007.

XML

Retail | Fidelity Income Replacement 2030 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2030 Fund^SM/Fidelity Income Replacement 2030 Fund

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Retail Fidelity Income Replacement 2030 Fund Class: Fidelity Income Replacement 2030 Fund
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Retail Fidelity Income Replacement 2030 Fund Class: Fidelity Income Replacement 2030 Fund
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.62%
Total annual operating expenses	[1]	0.62%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Retail Fidelity Income Replacement 2030 Fund Class: Fidelity Income Replacement 2030 Fund
1 year	63
3 years	199
5 years	346
10 years	774

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 50% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2030.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	45.3%
International Equity Fund	7.5%
Bond Funds
Investment-Grade Bond Funds	29.1%
High Yield Bond Funds	4.8%
Short-Term Funds
Short-Term Funds	13.3%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	13.58%	June 30, 2009
Lowest Quarter Return	-14.37%	December 31, 2008
Year-to-Date Return	5.92%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Retail Fidelity Income Replacement 2030 Fund	Past 1 year	Life of class		Inception Date
Class: Fidelity Income Replacement 2030 Fund Return Before Taxes	(0.79%)	1.50%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2030 Fund Return After Taxes on Distributions	(1.43%)	0.66%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2030 Fund Return After Taxes on Distributions and Sale of Fund Shares	(0.40%)	0.84%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Inst | Fidelity Income Replacement 2032 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2032 Fund^SM/Fidelity Advisor Income Replacement 2032 Fund^SM Institutional

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Inst Fidelity Income Replacement 2032 Fund Institutional Class
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Inst Fidelity Income Replacement 2032 Fund Institutional Class
Management fee		none
Distribution and/or Service (12b-1) fees		none
Tax expense	[1]	0.12%
Remainder of other expenses		none
Total other expenses		0.12%
Acquired fund fees and expenses		0.63%
Total annual operating expenses	[2]	0.75%
Fee waiver and/or expense reimbursement	[1]	0.12%
Total annual operating expenses after fee waiver and/or expense reimbursement	[2]	0.63%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Inst Fidelity Income Replacement 2032 Fund Institutional Class
1 year	64
3 years	202
5 years	351
10 years	786

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 37% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2032.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	46.2%
International Equity Fund	8.4%
Bond Funds
Investment-Grade Bond Funds	27.9%
High Yield Bond Funds	5.0%
Short-Term Funds
Short-Term Funds	12.5%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	13.91%	June 30, 2009
Lowest Quarter Return	-14.77%	December 31, 2008
Year-to-Date Return	6.00%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Inst Fidelity Income Replacement 2032 Fund	Past 1 year	Life of class		Inception Date
Institutional Class Return Before Taxes	(0.98%)	1.37%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions	(1.62%)	0.48%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions and Sale of Fund Shares	(0.51%)	0.71%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

[1] Represents excise tax liability on undistributed long-term capital gain, which Strategic Advisers or its affiliates has contractually agreed to reimburse. The obligation to reimburse this amount may not be terminated and will remain in effect until the fund is reimbursed for the full amount.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

A T C | Fidelity Income Replacement 2018 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2018 Fund^SM/Fidelity Advisor Income Replacement 2018 Fund^SM A, T, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 44% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

44.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2018.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	25.5%
International Equity Fund	2.3%
Bond Funds
Investment-Grade Bond Funds	41.5%
High Yield Bond Funds	0.0%
Short-Term Funds
Short-Term Funds	30.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	10.57%	June 30, 2009
Lowest Quarter Return	-11.16%	December 31, 2008
Year-to-Date Return	4.03%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

A T C | Fidelity Income Replacement 2018 Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.51%

Total annual operating expenses

rr_ExpensesOverAssets

0.76%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

648

3 years

rr_ExpenseExampleYear03

804

5 years

rr_ExpenseExampleYear05

973

10 years

rr_ExpenseExampleYear10

1,463

1 year

rr_ExpenseExampleNoRedemptionYear01

648

3 years

rr_ExpenseExampleNoRedemptionYear03

804

5 years

rr_ExpenseExampleNoRedemptionYear05

973

10 years

rr_ExpenseExampleNoRedemptionYear10

1,463

2008

rr_AnnualReturn2008

(20.29%)

2009

rr_AnnualReturn2009

20.33%

2010

rr_AnnualReturn2010

9.58%

2011

rr_AnnualReturn2011

1.20%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

4.03%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

10.57%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(11.16%)

A T C | Fidelity Income Replacement 2018 Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.50%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.51%

Total annual operating expenses

rr_ExpensesOverAssets

1.01%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

449

3 years

rr_ExpenseExampleYear03

660

5 years

rr_ExpenseExampleYear05

888

10 years

rr_ExpenseExampleYear10

1,543

1 year

rr_ExpenseExampleNoRedemptionYear01

449

3 years

rr_ExpenseExampleNoRedemptionYear03

660

5 years

rr_ExpenseExampleNoRedemptionYear05

888

10 years

rr_ExpenseExampleNoRedemptionYear10

1,543

A T C | Fidelity Income Replacement 2018 Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[3]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.51%

Total annual operating expenses

rr_ExpensesOverAssets

1.51%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

On Class C shares redeemed less than one year after purchase.

1 year

rr_ExpenseExampleYear01

254

3 years

rr_ExpenseExampleYear03

477

5 years

rr_ExpenseExampleYear05

824

10 years

rr_ExpenseExampleYear10

1,802

1 year

rr_ExpenseExampleNoRedemptionYear01

154

3 years

rr_ExpenseExampleNoRedemptionYear03

477

5 years

rr_ExpenseExampleNoRedemptionYear05

824

10 years

rr_ExpenseExampleNoRedemptionYear10

1,802

A T C | Fidelity Income Replacement 2018 Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(4.62%)

Life of class

rr_AverageAnnualReturnSinceInception

0.68%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2018 Fund | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(2.58%)

Life of class

rr_AverageAnnualReturnSinceInception

0.98%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2018 Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(0.56%)

Life of class

rr_AverageAnnualReturnSinceInception

1.30%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2018 Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(5.23%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.20%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2018 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(2.94%)

Life of class

rr_AverageAnnualReturnSinceInception

0.08%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2018 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[3] On Class C shares redeemed less than one year after purchase.

[4] From August 30, 2007.

XML

A T C | Fidelity Income Replacement 2036 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2036 Fund^SM/Fidelity Advisor Income Replacement 2036 Fund^SM A, T, C

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees A T C Fidelity Income Replacement 2036 Fund	Class A		Class T		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	5.75%		3.50%		none
Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)	none	[1]	none	[1]	1.00%	[2]

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses A T C Fidelity Income Replacement 2036 Fund		Class A	Class T	Class C
Management fee		none	none	none
Distribution and/or Service (12b-1) fees		0.25%	0.50%	1.00%
Other expenses		none	none	none
Acquired fund fees and expenses		0.65%	0.65%	0.65%
Total annual operating expenses	[1]	0.90%	1.15%	1.65%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Sell All Shares

Expense Example A T C Fidelity Income Replacement 2036 Fund (USD $)	Class A	Class T	Class C
1 year	662	463	268
3 years	845	703	520
5 years	1,045	961	897
10 years	1,619	1,699	1,955

Hold Shares

Expense Example, No Redemption A T C Fidelity Income Replacement 2036 Fund (USD $)	Class A	Class T	Class C
1 year	662	463	168
3 years	845	703	520
5 years	1,045	961	897
10 years	1,619	1,699	1,955

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 62% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2036.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	47.8%
International Equity Fund	10.0%
Bond Funds
Investment-Grade Bond Funds	26.8%
High Yield Bond Funds	5.5%
Short-Term Funds
Short-Term Funds	9.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	14.64%	June 30, 2009
Lowest Quarter Return	-15.69%	December 31, 2008
Year-to-Date Return	6.12%	June 30, 2012

Average Annual Returns

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns A T C Fidelity Income Replacement 2036 Fund	Past 1 year	Life of class		Inception Date
Class A Return Before Taxes	(7.35%)	(0.56%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions	(7.85%)	(1.33%)	[1]	Aug. 30, 2007
Class A Return After Taxes on Distributions and Sale of Fund Shares	(4.66%)	(0.87%)	[1]	Aug. 30, 2007
Class T Return Before Taxes	(5.37%)	(0.26%)	[1]	Aug. 30, 2007
Class C Return Before Taxes	(3.40%)	0.06%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] On Class C shares redeemed less than one year after purchase.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Inst | Fidelity Income Replacement 2032 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2032 Fund^SM/Fidelity Advisor Income Replacement 2032 Fund^SM Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 37% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

37.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2032.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	46.2%
International Equity Fund	8.4%
Bond Funds
Investment-Grade Bond Funds	27.9%
High Yield Bond Funds	5.0%
Short-Term Funds
Short-Term Funds	12.5%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	13.91%	June 30, 2009
Lowest Quarter Return	-14.77%	December 31, 2008
Year-to-Date Return	6.00%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Inst | Fidelity Income Replacement 2032 Fund | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Tax expense

rr_Component1OtherExpensesOverAssets

0.12%

^[1]

Remainder of other expenses

rr_Component2OtherExpensesOverAssets

none

Total other expenses

rr_OtherExpensesOverAssets

0.12%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.63%

Total annual operating expenses

rr_ExpensesOverAssets

0.75%

^[2]

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.12%

^[1]

Total annual operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

0.63%

^[2]

1 year

rr_ExpenseExampleYear01

64

3 years

rr_ExpenseExampleYear03

202

5 years

rr_ExpenseExampleYear05

351

10 years

rr_ExpenseExampleYear10

786

2008

rr_AnnualReturn2008

(26.76%)

2009

rr_AnnualReturn2009

25.87%

2010

rr_AnnualReturn2010

12.52%

2011

rr_AnnualReturn2011

(0.98%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.00%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.91%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(14.77%)

Inst | Fidelity Income Replacement 2032 Fund | Return Before Taxes | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(0.98%)

Life of class

rr_AverageAnnualReturnSinceInception

1.37%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2032 Fund | Return After Taxes on Distributions | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(1.62%)

Life of class

rr_AverageAnnualReturnSinceInception

0.48%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2032 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.51%)

Life of class

rr_AverageAnnualReturnSinceInception

0.71%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2032 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Represents excise tax liability on undistributed long-term capital gain, which Strategic Advisers or its affiliates has contractually agreed to reimburse. The obligation to reimburse this amount may not be terminated and will remain in effect until the fund is reimbursed for the full amount.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[3] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

A T C | Fidelity Income Replacement 2016 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2016 Fund^SM/Fidelity Advisor Income Replacement 2016 Fund^SM A, T, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 44% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

44.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2016.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	17.2%
International Equity Fund	0.0%
Bond Funds
Investment-Grade Bond Funds	34.0%
High Yield Bond Funds	0.0%
Short-Term Funds
Short-Term Funds	48.8%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	9.42%	June 30, 2009
Lowest Quarter Return	-9.90%	December 31, 2008
Year-to-Date Return	3.22%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

A T C | Fidelity Income Replacement 2016 Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.46%

Total annual operating expenses

rr_ExpensesOverAssets

0.71%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

643

3 years

rr_ExpenseExampleYear03

789

5 years

rr_ExpenseExampleYear05

947

10 years

rr_ExpenseExampleYear10

1,407

1 year

rr_ExpenseExampleNoRedemptionYear01

643

3 years

rr_ExpenseExampleNoRedemptionYear03

789

5 years

rr_ExpenseExampleNoRedemptionYear05

947

10 years

rr_ExpenseExampleNoRedemptionYear10

1,407

2008

rr_AnnualReturn2008

(17.99%)

2009

rr_AnnualReturn2009

18.20%

2010

rr_AnnualReturn2010

8.44%

2011

rr_AnnualReturn2011

1.91%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

3.22%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

9.42%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(9.90%)

A T C | Fidelity Income Replacement 2016 Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.50%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.46%

Total annual operating expenses

rr_ExpensesOverAssets

0.96%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

445

3 years

rr_ExpenseExampleYear03

645

5 years

rr_ExpenseExampleYear05

862

10 years

rr_ExpenseExampleYear10

1,487

1 year

rr_ExpenseExampleNoRedemptionYear01

445

3 years

rr_ExpenseExampleNoRedemptionYear03

645

5 years

rr_ExpenseExampleNoRedemptionYear05

862

10 years

rr_ExpenseExampleNoRedemptionYear10

1,487

A T C | Fidelity Income Replacement 2016 Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[3]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.46%

Total annual operating expenses

rr_ExpensesOverAssets

1.46%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

On Class C shares redeemed less than one year after purchase.

1 year

rr_ExpenseExampleYear01

249

3 years

rr_ExpenseExampleYear03

462

5 years

rr_ExpenseExampleYear05

797

10 years

rr_ExpenseExampleYear10

1,746

1 year

rr_ExpenseExampleNoRedemptionYear01

149

3 years

rr_ExpenseExampleNoRedemptionYear03

462

5 years

rr_ExpenseExampleNoRedemptionYear05

797

10 years

rr_ExpenseExampleNoRedemptionYear10

1,746

A T C | Fidelity Income Replacement 2016 Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(3.95%)

Life of class

rr_AverageAnnualReturnSinceInception

0.81%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2016 Fund | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(1.93%)

Life of class

rr_AverageAnnualReturnSinceInception

1.10%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2016 Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

0.14%

Life of class

rr_AverageAnnualReturnSinceInception

1.43%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2016 Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(4.58%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.08%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2016 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(2.53%)

Life of class

rr_AverageAnnualReturnSinceInception

0.19%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2016 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[3] On Class C shares redeemed less than one year after purchase.

[4] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Inst | Fidelity Income Replacement 2028 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2028 Fund^SM/Fidelity Advisor Income Replacement 2028 Fund^SM Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 46% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

46.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2028.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	44.1%
International Equity Fund	6.8%
Bond Funds
Investment-Grade Bond Funds	29.9%
High Yield Bond Funds	4.5%
Short-Term Funds
Short-Term Funds	14.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	13.28%	June 30, 2009
Lowest Quarter Return	-14.06%	December 31, 2008
Year-to-Date Return	5.78%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Inst | Fidelity Income Replacement 2028 Fund | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.61%

Total annual operating expenses

rr_ExpensesOverAssets

0.61%

^[1]

1 year

rr_ExpenseExampleYear01

62

3 years

rr_ExpenseExampleYear03

195

5 years

rr_ExpenseExampleYear05

340

10 years

rr_ExpenseExampleYear10

762

2008

rr_AnnualReturn2008

(25.43%)

2009

rr_AnnualReturn2009

24.88%

2010

rr_AnnualReturn2010

12.14%

2011

rr_AnnualReturn2011

(0.57%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.78%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.28%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(14.06%)

Inst | Fidelity Income Replacement 2028 Fund | Return Before Taxes | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(0.57%)

Life of class

rr_AverageAnnualReturnSinceInception

1.59%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2028 Fund | Return After Taxes on Distributions | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(1.22%)

Life of class

rr_AverageAnnualReturnSinceInception

0.75%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2028 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.25%)

Life of class

rr_AverageAnnualReturnSinceInception

0.90%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2028 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

A T C | Fidelity Income Replacement 2032 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2032 Fund^SM/Fidelity Advisor Income Replacement 2032 Fund^SM A, T, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 37% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

37.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2032.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	46.2%
International Equity Fund	8.4%
Bond Funds
Investment-Grade Bond Funds	27.9%
High Yield Bond Funds	5.0%
Short-Term Funds
Short-Term Funds	12.5%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	13.84%	June 30, 2009
Lowest Quarter Return	-14.83%	December 31, 2008
Year-to-Date Return	5.87%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

A T C | Fidelity Income Replacement 2032 Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Tax expense

rr_Component1OtherExpensesOverAssets

0.12%

^[2]

Remainder of other expenses

rr_Component2OtherExpensesOverAssets

none

Total other expenses

rr_OtherExpensesOverAssets

0.12%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.63%

Total annual operating expenses

rr_ExpensesOverAssets

1.00%

^[3]

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.12%

^[2]

Total annual operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

0.88%

^[3]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

660

3 years

rr_ExpenseExampleYear03

840

5 years

rr_ExpenseExampleYear05

1,035

10 years

rr_ExpenseExampleYear10

1,597

1 year

rr_ExpenseExampleNoRedemptionYear01

660

3 years

rr_ExpenseExampleNoRedemptionYear03

840

5 years

rr_ExpenseExampleNoRedemptionYear05

1,035

10 years

rr_ExpenseExampleNoRedemptionYear10

1,597

2008

rr_AnnualReturn2008

(26.95%)

2009

rr_AnnualReturn2009

25.56%

2010

rr_AnnualReturn2010

12.25%

2011

rr_AnnualReturn2011

(1.22%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.87%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.84%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(14.83%)

A T C | Fidelity Income Replacement 2032 Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.50%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Tax expense

rr_Component1OtherExpensesOverAssets

0.12%

^[2]

Remainder of other expenses

rr_Component2OtherExpensesOverAssets

none

Total other expenses

rr_OtherExpensesOverAssets

0.12%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.63%

Total annual operating expenses

rr_ExpensesOverAssets

1.25%

^[3]

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.12%

^[2]

Total annual operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

1.13%

^[3]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

461

3 years

rr_ExpenseExampleYear03

697

5 years

rr_ExpenseExampleYear05

950

10 years

rr_ExpenseExampleYear10

1,677

1 year

rr_ExpenseExampleNoRedemptionYear01

461

3 years

rr_ExpenseExampleNoRedemptionYear03

697

5 years

rr_ExpenseExampleNoRedemptionYear05

950

10 years

rr_ExpenseExampleNoRedemptionYear10

1,677

A T C | Fidelity Income Replacement 2032 Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[4]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Tax expense

rr_Component1OtherExpensesOverAssets

0.12%

^[2]

Remainder of other expenses

rr_Component2OtherExpensesOverAssets

none

Total other expenses

rr_OtherExpensesOverAssets

0.12%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.63%

Total annual operating expenses

rr_ExpensesOverAssets

1.75%

^[3]

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.12%

^[2]

Total annual operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

1.63%

^[3]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

On Class C shares redeemed less than one year after purchase.

1 year

rr_ExpenseExampleYear01

266

3 years

rr_ExpenseExampleYear03

514

5 years

rr_ExpenseExampleYear05

887

10 years

rr_ExpenseExampleYear10

1,933

1 year

rr_ExpenseExampleNoRedemptionYear01

166

3 years

rr_ExpenseExampleNoRedemptionYear03

514

5 years

rr_ExpenseExampleNoRedemptionYear05

887

10 years

rr_ExpenseExampleNoRedemptionYear10

1,933

A T C | Fidelity Income Replacement 2032 Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(6.90%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.25%)

^[5]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2032 Fund | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(4.93%)

Life of class

rr_AverageAnnualReturnSinceInception

0.04%

^[5]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2032 Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(2.94%)

Life of class

rr_AverageAnnualReturnSinceInception

0.36%

^[5]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2032 Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(7.43%)

Life of class

rr_AverageAnnualReturnSinceInception

(1.04%)

^[5]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2032 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(4.37%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.61%)

^[5]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2032 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[5]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] Represents excise tax liability on undistributed long-term capital gain, which Strategic Advisers or its affiliates has contractually agreed to reimburse. The obligation to reimburse this amount may not be terminated and will remain in effect until the fund is reimbursed for the full amount.

[3] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[4] On Class C shares redeemed less than one year after purchase.

[5] From August 30, 2007.

XML

Inst | Fidelity Income Replacement 2042 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2042 Fund^SM/Fidelity Advisor Income Replacement 2042 Fund^SM Institutional

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Inst Fidelity Income Replacement 2042 Fund Institutional Class
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Inst Fidelity Income Replacement 2042 Fund Institutional Class
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.68%
Total annual operating expenses	[1]	0.68%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Inst Fidelity Income Replacement 2042 Fund Institutional Class
1 year	69
3 years	218
5 years	379
10 years	847

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 40% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2042.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	51.2%
International Equity Fund	12.8%
Bond Funds
Investment-Grade Bond Funds	25.6%
High Yield Bond Funds	6.5%
Short-Term Funds
Short-Term Funds	3.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.
• "Value" Investing. "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	15.68%	June 30, 2009
Lowest Quarter Return	-16.58%	December 31, 2008
Year-to-Date Return	6.69%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Inst Fidelity Income Replacement 2042 Fund	Past 1 year	Life of class		Inception Date
Institutional Class Return Before Taxes	(2.10%)	0.11%	[1]	Dec. 31, 2007
Institutional Class Return After Taxes on Distributions	(2.72%)	(0.62%)	[1]	Dec. 31, 2007
Institutional Class Return After Taxes on Distributions and Sale of Fund Shares	(1.22%)	(0.28%)	[1]	Dec. 31, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.64%)	[1]	Dec. 31, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From December 31, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

A T C | Fidelity Income Replacement 2030 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2030 Fund^SM/Fidelity Advisor Income Replacement 2030 Fund^SM A, T, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 50% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

50.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2030.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	45.3%
International Equity Fund	7.5%
Bond Funds
Investment-Grade Bond Funds	29.1%
High Yield Bond Funds	4.8%
Short-Term Funds
Short-Term Funds	13.3%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	13.51%	June 30, 2009
Lowest Quarter Return	-14.40%	December 31, 2008
Year-to-Date Return	5.80%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

A T C | Fidelity Income Replacement 2030 Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.62%

Total annual operating expenses

rr_ExpensesOverAssets

0.87%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

659

3 years

rr_ExpenseExampleYear03

837

5 years

rr_ExpenseExampleYear05

1,029

10 years

rr_ExpenseExampleYear10

1,586

1 year

rr_ExpenseExampleNoRedemptionYear01

659

3 years

rr_ExpenseExampleNoRedemptionYear03

837

5 years

rr_ExpenseExampleNoRedemptionYear05

1,029

10 years

rr_ExpenseExampleNoRedemptionYear10

1,586

2008

rr_AnnualReturn2008

(26.22%)

2009

rr_AnnualReturn2009

25.08%

2010

rr_AnnualReturn2010

12.09%

2011

rr_AnnualReturn2011

(1.04%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.80%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.51%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(14.40%)

A T C | Fidelity Income Replacement 2030 Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.50%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.62%

Total annual operating expenses

rr_ExpensesOverAssets

1.12%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

460

3 years

rr_ExpenseExampleYear03

694

5 years

rr_ExpenseExampleYear05

945

10 years

rr_ExpenseExampleYear10

1,665

1 year

rr_ExpenseExampleNoRedemptionYear01

460

3 years

rr_ExpenseExampleNoRedemptionYear03

694

5 years

rr_ExpenseExampleNoRedemptionYear05

945

10 years

rr_ExpenseExampleNoRedemptionYear10

1,665

A T C | Fidelity Income Replacement 2030 Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[3]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.62%

Total annual operating expenses

rr_ExpensesOverAssets

1.62%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

On Class C shares redeemed less than one year after purchase.

1 year

rr_ExpenseExampleYear01

265

3 years

rr_ExpenseExampleYear03

511

5 years

rr_ExpenseExampleYear05

881

10 years

rr_ExpenseExampleYear10

1,922

1 year

rr_ExpenseExampleNoRedemptionYear01

165

3 years

rr_ExpenseExampleNoRedemptionYear03

511

5 years

rr_ExpenseExampleNoRedemptionYear05

881

10 years

rr_ExpenseExampleNoRedemptionYear10

1,922

A T C | Fidelity Income Replacement 2030 Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(6.73%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.12%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2030 Fund | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(4.76%)

Life of class

rr_AverageAnnualReturnSinceInception

0.17%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2030 Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(2.75%)

Life of class

rr_AverageAnnualReturnSinceInception

0.49%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2030 Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(7.24%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.86%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2030 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(4.26%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.48%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

A T C | Fidelity Income Replacement 2030 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[3] On Class C shares redeemed less than one year after purchase.

[4] From August 30, 2007.

XML

Retail | Fidelity Income Replacement 2032 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2032 Fund^SM/Fidelity Income Replacement 2032 Fund

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Retail Fidelity Income Replacement 2032 Fund Class: Fidelity Income Replacement 2032 Fund
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Retail Fidelity Income Replacement 2032 Fund Class: Fidelity Income Replacement 2032 Fund
Management fee		none
Distribution and/or Service (12b-1) fees		none
Tax expense	[1]	0.12%
Remainder of other expenses		none
Total other expenses		0.12%
Acquired fund fees and expenses		0.63%
Total annual operating expenses	[2]	0.75%
Fee waiver and/or expense reimbursement	[1]	0.12%
Total annual operating expenses after fee waiver and/or expense reimbursement	[2]	0.63%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Retail Fidelity Income Replacement 2032 Fund Class: Fidelity Income Replacement 2032 Fund
1 year	64
3 years	202
5 years	351
10 years	786

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 37% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2032.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	46.2%
International Equity Fund	8.4%
Bond Funds
Investment-Grade Bond Funds	27.9%
High Yield Bond Funds	5.0%
Short-Term Funds
Short-Term Funds	12.5%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	13.91%	June 30, 2009
Lowest Quarter Return	-14.79%	December 31, 2008
Year-to-Date Return	6.00%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Retail Fidelity Income Replacement 2032 Fund	Past 1 year	Life of class		Inception Date
Class: Fidelity Income Replacement 2032 Fund Return Before Taxes	(0.98%)	1.37%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2032 Fund Return After Taxes on Distributions	(1.62%)	0.48%	[1]	Aug. 30, 2007
Class: Fidelity Income Replacement 2032 Fund Return After Taxes on Distributions and Sale of Fund Shares	(0.51%)	0.71%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

[1] Represents excise tax liability on undistributed long-term capital gain, which Strategic Advisers or its affiliates has contractually agreed to reimburse. The obligation to reimburse this amount may not be terminated and will remain in effect until the fund is reimbursed for the full amount.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

A T C | Fidelity Income Replacement 2038 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2038 Fund^SM/Fidelity Advisor Income Replacement 2038 Fund^SM A, T, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 57% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

57.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 and if you hold your shares:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2038.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	48.7%
International Equity Fund	10.9%
Bond Funds
Investment-Grade Bond Funds	26.2%
High Yield Bond Funds	5.8%
Short-Term Funds
Short-Term Funds	8.4%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown.

Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	15.12%	June 30, 2009
Lowest Quarter Return	-16.23%	December 31, 2008
Year-to-Date Return	6.24%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

A T C | Fidelity Income Replacement 2038 Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.66%

Total annual operating expenses

rr_ExpensesOverAssets

0.91%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

663

3 years

rr_ExpenseExampleYear03

848

5 years

rr_ExpenseExampleYear05

1,050

10 years

rr_ExpenseExampleYear10

1,630

1 year

rr_ExpenseExampleNoRedemptionYear01

663

3 years

rr_ExpenseExampleNoRedemptionYear03

848

5 years

rr_ExpenseExampleNoRedemptionYear05

1,050

10 years

rr_ExpenseExampleNoRedemptionYear10

1,630

2008

rr_AnnualReturn2008

(29.65%)

2009

rr_AnnualReturn2009

27.56%

2010

rr_AnnualReturn2010

12.92%

2011

rr_AnnualReturn2011

(1.95%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.24%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

15.12%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(16.23%)

A T C | Fidelity Income Replacement 2038 Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.50%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.66%

Total annual operating expenses

rr_ExpensesOverAssets

1.16%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

464

3 years

rr_ExpenseExampleYear03

706

5 years

rr_ExpenseExampleYear05

966

10 years

rr_ExpenseExampleYear10

1,710

1 year

rr_ExpenseExampleNoRedemptionYear01

464

3 years

rr_ExpenseExampleNoRedemptionYear03

706

5 years

rr_ExpenseExampleNoRedemptionYear05

966

10 years

rr_ExpenseExampleNoRedemptionYear10

1,710

A T C | Fidelity Income Replacement 2038 Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) on purchases (as a % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds) (not applicable to automatic sales through the Smart Payment Program)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[3]

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.66%

Total annual operating expenses

rr_ExpensesOverAssets

1.66%

^[2]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

On Class C shares redeemed less than one year after purchase.

1 year

rr_ExpenseExampleYear01

269

3 years

rr_ExpenseExampleYear03

523

5 years

rr_ExpenseExampleYear05

902

10 years

rr_ExpenseExampleYear10

1,965

1 year

rr_ExpenseExampleNoRedemptionYear01

169

3 years

rr_ExpenseExampleNoRedemptionYear03

523

5 years

rr_ExpenseExampleNoRedemptionYear05

902

10 years

rr_ExpenseExampleNoRedemptionYear10

1,965

A T C | Fidelity Income Replacement 2038 Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(7.59%)

Life of class

rr_AverageAnnualReturnSinceInception

(1.63%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

A T C | Fidelity Income Replacement 2038 Fund | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(5.62%)

Life of class

rr_AverageAnnualReturnSinceInception

(1.29%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

A T C | Fidelity Income Replacement 2038 Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(3.63%)

Life of class

rr_AverageAnnualReturnSinceInception

(0.90%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

A T C | Fidelity Income Replacement 2038 Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(8.10%)

Life of class

rr_AverageAnnualReturnSinceInception

(2.28%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

A T C | Fidelity Income Replacement 2038 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(4.80%)

Life of class

rr_AverageAnnualReturnSinceInception

(1.70%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

A T C | Fidelity Income Replacement 2038 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.64%)

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2007

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

[2] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[3] On Class C shares redeemed less than one year after purchase.

[4] From December 31, 2007.

XML

Inst | Fidelity Income Replacement 2024 Fund

Fund Summary

Fund/Class:
Fidelity Income Replacement 2024 Fund^SM/Fidelity Advisor Income Replacement 2024 Fund^SM Institutional

Investment Objective

The fund seeks total return through a combination of current income and capital growth.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	Inst Fidelity Income Replacement 2024 Fund Institutional Class
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		Inst Fidelity Income Replacement 2024 Fund Institutional Class
Management fee		none
Distribution and/or Service (12b-1) fees		none
Other expenses		none
Acquired fund fees and expenses		0.59%
Total annual operating expenses	[1]	0.59%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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 (USD $)	Inst Fidelity Income Replacement 2024 Fund Institutional Class
1 year	60
3 years	189
5 years	329
10 years	738

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 65% of the average value of its portfolio.

Principal Investment Strategies

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2024.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	40.3%
International Equity Fund	5.2%
Bond Funds
Investment-Grade Bond Funds	32.9%
High Yield Bond Funds	3.7%
Short-Term Funds
Short-Term Funds	17.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Principal Investment Risks

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	12.59%	June 30, 2009
Lowest Quarter Return	-13.28%	December 31, 2008
Year-to-Date Return	5.46%	June 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Average Annual Total Returns Inst Fidelity Income Replacement 2024 Fund	Past 1 year	Life of class		Inception Date
Institutional Class Return Before Taxes	none	1.88%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions	(0.67%)	0.96%	[1]	Aug. 30, 2007
Institutional Class Return After Taxes on Distributions and Sale of Fund Shares	0.11%	1.10%	[1]	Aug. 30, 2007
Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	7.84%	6.73%	[1]	Aug. 30, 2007
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(1.19%)	[1]	Aug. 30, 2007

Going forward, the fund's performance will be compared to the Barclays^® U.S. Aggregate Bond Index, rather than the S&P 500^® Index. The Barclays U.S. Aggregate Bond Index more closely represents the fund's investment strategy, as fixed-income and short-term funds currently represent the majority of the fund's assets.

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[1] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Inst | Fidelity Income Replacement 2026 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2026 Fund^SM/Fidelity Advisor Income Replacement 2026 Fund^SM Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 60% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

60.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2026.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	42.6%
International Equity Fund	6.0%
Bond Funds
Investment-Grade Bond Funds	31.2%
High Yield Bond Funds	4.2%
Short-Term Funds
Short-Term Funds	16.0%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	12.96%	June 30, 2009
Lowest Quarter Return	-13.72%	December 31, 2008
Year-to-Date Return	5.64%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

Going forward, the fund's performance will be compared to the Barclays^® U.S. Aggregate Bond Index, rather than the S&P 500^® Index. The Barclays U.S. Aggregate Bond Index more closely represents the fund's investment strategy, as fixed-income and short-term funds currently represent the majority of the fund's assets.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Inst | Fidelity Income Replacement 2026 Fund | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.60%

Total annual operating expenses

rr_ExpensesOverAssets

0.60%

^[1]

1 year

rr_ExpenseExampleYear01

61

3 years

rr_ExpenseExampleYear03

192

5 years

rr_ExpenseExampleYear05

335

10 years

rr_ExpenseExampleYear10

750

2008

rr_AnnualReturn2008

(24.78%)

2009

rr_AnnualReturn2009

24.38%

2010

rr_AnnualReturn2010

11.95%

2011

rr_AnnualReturn2011

(0.34%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.64%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.96%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(13.72%)

Inst | Fidelity Income Replacement 2026 Fund | Return Before Taxes | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(0.34%)

Life of class

rr_AverageAnnualReturnSinceInception

1.70%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2026 Fund | Return After Taxes on Distributions | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(0.99%)

Life of class

rr_AverageAnnualReturnSinceInception

0.80%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2026 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.11%)

Life of class

rr_AverageAnnualReturnSinceInception

0.97%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2026 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2026 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Inst | Fidelity Income Replacement 2018 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2018 Fund^SM/Fidelity Advisor Income Replacement 2018 Fund^SM Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 44% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

44.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2018.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	25.5%
International Equity Fund	2.3%
Bond Funds
Investment-Grade Bond Funds	41.5%
High Yield Bond Funds	0.0%
Short-Term Funds
Short-Term Funds	30.7%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	10.63%	June 30, 2009
Lowest Quarter Return	-11.12%	December 31, 2008
Year-to-Date Return	4.16%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Inst | Fidelity Income Replacement 2018 Fund | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.51%

Total annual operating expenses

rr_ExpensesOverAssets

0.51%

^[1]

1 year

rr_ExpenseExampleYear01

52

3 years

rr_ExpenseExampleYear03

164

5 years

rr_ExpenseExampleYear05

285

10 years

rr_ExpenseExampleYear10

640

2008

rr_AnnualReturn2008

(20.10%)

2009

rr_AnnualReturn2009

20.67%

2010

rr_AnnualReturn2010

9.82%

2011

rr_AnnualReturn2011

1.46%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

4.16%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

10.63%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(11.12%)

Inst | Fidelity Income Replacement 2018 Fund | Return Before Taxes | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

1.46%

Life of class

rr_AverageAnnualReturnSinceInception

2.32%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2018 Fund | Return After Taxes on Distributions | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

0.72%

Life of class

rr_AverageAnnualReturnSinceInception

1.33%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2018 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

1.02%

Life of class

rr_AverageAnnualReturnSinceInception

1.42%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2018 Fund | Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® U.S. Aggregate Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

7.84%

Life of class

rr_AverageAnnualReturnSinceInception

6.73%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	FIDELITY INCOME FUND /MA/
Prospectus Date	rr_ProspectusDate	Sep. 29, 2012
Document Creation Date	dei_DocumentCreationDate	Sep. 27, 2012

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY INCOME FUND /MA/

Prospectus Date

rr_ProspectusDate

Sep. 29, 2012

Inst | Fidelity Income Replacement 2036 Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Income Replacement 2036 Fund^SM/Fidelity Advisor Income Replacement 2036 Fund^SM Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks total return through a combination of current income and capital growth.

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, hold, or sell shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual class 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 will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 62% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

62.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

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 mutual funds. The example assumes that you are not participating in the Smart Payment Program^®.

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. 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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Investing in a combination of underlying Fidelity equity funds, bond funds, and short-term funds using an asset allocation strategy designed to achieve a level of total return consistent with a payment strategy to be administered through the fund's horizon date, December 31, 2036.
• Allocating assets among underlying Fidelity funds according to an asset allocation strategy that begins with a relatively more aggressive asset allocation and gradually shifts to a relatively more conservative asset allocation over the fund's time horizon.
• Using an asset allocation among underlying Fidelity funds as of July 31, 2012, of approximately:

	Investment %
Equity Funds
Domestic Equity Funds	47.8%
International Equity Fund	10.0%
Bond Funds
Investment-Grade Bond Funds	26.8%
High Yield Bond Funds	5.5%
Short-Term Funds
Short-Term Funds	9.9%

The payment strategy is designed to be implemented through a shareholder's voluntary participation in the Smart Payment Program^®. The Smart Payment Program is an optional account feature designed, but not guaranteed, to enable shareholders to receive from the fund monthly payments that have the potential to keep pace with inflation over the fund's time horizon. The fund's investment objective is intended to support the Smart Payment Program's payment strategy. However, shareholders may invest in the fund and not participate in the Smart Payment Program. Investors should refer to the Features and Policies section of the prospectus for a summary of how the Smart Payment Program works.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• The fund is not designed for the accumulation of assets prior to retirement. The fund does not provide a complete solution for a shareholder's retirement income needs.
• If you participate in the Smart Payment Program, your entire investment in the fund will be gradually liquidated over time.
• If Strategic Advisers' asset allocation strategy does not work as intended, the fund may not achieve its objective. If the fund is unable to achieve its objective, the Smart Payment Program's payment strategy may not work as intended, which could mean that monthly payments would not keep pace with inflation.
• Investing in Other Funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt or money market security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

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

The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Indexes section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.advisor.fidelity.com for updated return information.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not an indication of future performance.

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	14.68%	June 30, 2009
Lowest Quarter Return	-15.63%	December 31, 2008
Year-to-Date Return	6.23%	June 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.

For the periods ended
December 31, 2011

Inst | Fidelity Income Replacement 2036 Fund | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

none

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.65%

Total annual operating expenses

rr_ExpensesOverAssets

0.65%

^[1]

1 year

rr_ExpenseExampleYear01

66

3 years

rr_ExpenseExampleYear03

208

5 years

rr_ExpenseExampleYear05

362

10 years

rr_ExpenseExampleYear10

810

2008

rr_AnnualReturn2008

(28.44%)

2009

rr_AnnualReturn2009

27.01%

2010

rr_AnnualReturn2010

12.94%

2011

rr_AnnualReturn2011

(1.45%)

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.23%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

14.68%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(15.63%)

Inst | Fidelity Income Replacement 2036 Fund | Return Before Taxes | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(1.45%)

Life of class

rr_AverageAnnualReturnSinceInception

1.07%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2036 Fund | Return After Taxes on Distributions | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(2.06%)

Life of class

rr_AverageAnnualReturnSinceInception

0.19%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2036 Fund | Return After Taxes on Distributions and Sale of Fund Shares | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.81%)

Life of class

rr_AverageAnnualReturnSinceInception

0.45%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

Inst | Fidelity Income Replacement 2036 Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500^® Index

Past 1 year

rr_AverageAnnualReturnYear01

2.11%

Life of class

rr_AverageAnnualReturnSinceInception

(1.19%)

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 30, 2007

[1] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

[2] From August 30, 2007.