Fidelity Managed Retirement 2015 Fund (FIRSX) N-CSR 20 Sep 24 Certified annual shareholder report (management investment company) Financial data

Form N-CSR Cover

Form N-CSR Cover	12 Months Ended
	Jul. 31, 2024
Shareholder Report [Line Items]
Document Type	N-CSR
Amendment Flag	false
Registrant Name	Fidelity Income Fund
Entity Central Index Key	0000751199
Entity Investment Company Type	N-1A
Document Period End Date	Jul. 31, 2024

Shareholder Report

Shareholder Report	12 Months Ended
	Jul. 31, 2024 USD ($) shares
Shareholder Report [Line Items]
Document Type	N-CSR
Amendment Flag	false
Registrant Name	Fidelity Income Fund
Entity Central Index Key	0000751199
Entity Investment Company Type	N-1A
Document Period End Date	Jul. 31, 2024
Fidelity Managed Retirement 2035 Fund - Class K
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2035 Fund℠
Class Name	Fidelity Managed Retirement 2035 Fund℠ Class K
Trading Symbol	FMRZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2035 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-835-5092
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K $ 0.38 %
Expenses Paid, Amount	$ 40
Expense Ratio, Percent	0.38%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B25">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE December 15, 2022 through July 31, 2024. Initial investment of $10,000. Class K   $10,000 $10,812   $11,956   Fidelity Managed Retirement 2035 Composite Index   $10,000 $10,787   $11,909   S&P 500® Index   $10,000 $11,898   $14,533   Bloomberg U.S. Aggregate Bond Index   $10,000 $9,962   $10,470     2022 2023 2024 Effective February 2, 2024, the fund began comparing its performance to Bloomberg U.S. Aggregate Bond Index rather than S&P 500® Index because the Bloomberg U.S. Aggregate Bond Index conforms more closely to the fund's investment policies.
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class K 10.58% 11.60% Fidelity Managed Retirement 2035 Composite Index 10.39% 11.33% S&P 500® Index 24.56% 26.43% Bloomberg U.S. Aggregate Bond Index 5.10% 2.86% A   From December 15, 2022   Effective February 2, 2024, the fund began comparing its performance to Bloomberg U.S. Aggregate Bond Index rather than S&P 500® Index because the Bloomberg U.S. Aggregate Bond Index conforms more closely to the fund's investment policies.   Visit www.401k.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Dec. 15, 2022
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 10,439,772
Holdings Count | shares	32
Advisory Fees Paid, Amount	$ 16,710
Investment Company Portfolio Turnover	60%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 32 Total Advisory Fee $ Portfolio Turnover 60 %
Holdings [Text Block]	Bond Funds 36.9 Domestic Equity Funds 27.5 International Equity Funds 25.8 Inflation-Protected Bond Funds 9.8 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 8.4     Fidelity Series Government Bond Index Fund 8.2     Fidelity Series Investment Grade Bond Fund 8.0     Fidelity Series Large Cap Value Index Fund 7.4     Fidelity Series Emerging Markets Opportunities Fund 7.3     Fidelity Series Blue Chip Growth Fund 6.2     Fidelity Series Corporate Bond Fund 5.3     Fidelity Series Investment Grade Securitized Fund 5.2     Fidelity Series Long-Term Treasury Bond Index Fund 4.8     Fidelity Series International Growth Fund 4.1       64.9
Fidelity Advisor Managed Retirement 2020 Fund - Class I
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2020 Fund℠
Class Name	Fidelity Advisor Managed Retirement 2020 Fund℠ Class I
Trading Symbol	FIIVX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2020 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-877-208-0098
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $ 0.47 %
Expenses Paid, Amount	$ 49
Expense Ratio, Percent	0.47%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B52">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000. Class I   $10,000 $10,584   $10,745   $11,868   $12,530   $13,065   $14,116   $16,296   $14,764   $15,103   $16,410   Fidelity Managed Retirement 2020 Composite Index℠   $10,000 $10,619   $11,003   $11,968   $12,723   $13,505   $14,696   $16,666   $15,291   $15,651   $17,029   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Class I 8.65% 4.67% 5.08% Fidelity Managed Retirement 2020 Composite Index℠ 8.80% 4.75% 5.47% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit institutional.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 8,371,922
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 38,515
Investment Company Portfolio Turnover	32%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 32 %
Holdings [Text Block]	Bond Funds 45.9 International Equity Funds 19.3 Domestic Equity Funds 17.9 Inflation-Protected Bond Funds 15.8 Short-Term Funds 0.9 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Government Bond Index Fund 11.5     Fidelity Series Investment Grade Bond Fund 11.2     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 11.1     Fidelity Series Corporate Bond Fund 7.5     Fidelity Series Investment Grade Securitized Fund 7.3     Fidelity Series Emerging Markets Opportunities Fund 5.9     Fidelity Series Large Cap Value Index Fund 4.8     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 4.7     Fidelity Series International Developed Markets Bond Index Fund 4.0     Fidelity Series Blue Chip Growth Fund 3.9       71.9
Fidelity GNMA Fund
Shareholder Report [Line Items]
Fund Name	Fidelity® GNMA Fund
Class Name	Fidelity® GNMA Fund
Trading Symbol	FGMNX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® GNMA Fund for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1-800-544-8544
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® GNMA Fund $ 0.45 %
Expenses Paid, Amount	$ 46
Expense Ratio, Percent	0.45%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • U.S. taxable investment-grade bonds achieved a solid gain for the 12 months ending July 31, 2024. The period was marked by high levels of volatility, as investors anxiously awaited the arrival of interest-rate reductions by the U.S. Federal Reserve. • Against this backdrop, positioning in GNMA securities was the primary contributor to the fund's performance versus the benchmark, the Bloomberg GNMA Index, for the fiscal year. This relative gain was led by a timely overweight established last fall after GNMA securities suffered sharp selloffs in September and October. The bond class then rebounded through the end of 2023. • Picks among GNMAs, particularly overweights to securities with coupons 3% and below and 5% and above, also boosted the fund's relative performance. • The fund's non-benchmark exposure to 15- and 20-year Fannie Mae/Freddie Mac mortgage-backed securities provided another performance lift. • Overweights to MBS made up of reverse mortgages (including home equity conversion mortgages insured by the Federal Housing Administration) added value as well. • An overweight to government-agency securities made up of commercial mortgages was another notable contributor. These CMBS were among the mortgage market's best performers the past 12 months. • In contrast, the biggest detractor from relative performance was an untimely decision to reduce exposure to securities with coupons 5% and above in the fall of 2023.
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B79">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000. Fidelity® GNMA Fund   $10,000 $10,313   $10,649   $10,669   $10,593   $11,233   $11,762   $11,794   $11,064   $10,579   $11,126   Bloomberg GNMA Index   $10,000 $10,305   $10,678   $10,681   $10,644   $11,326   $11,868   $11,820   $11,155   $10,688   $11,187   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Fidelity® GNMA Fund 5.17% -0.19% 1.07% Bloomberg GNMA Index 4.67% -0.25% 1.13% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 2,053,126,666
Holdings Count | shares	2,223
Advisory Fees Paid, Amount	$ 6,162,344
Investment Company Portfolio Turnover	781%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 2,223 Total Advisory Fee $ Portfolio Turnover 781 %
Holdings [Text Block]	COUPON DISTRIBUTION (% of Fund's net assets) 0.01 - 0.99% 0.0   1 - 1.99% 1.6   2 - 2.99% 43.6   3 - 3.99% 36.0   4 - 4.99% 19.1   5 - 5.99% 12.2   6 - 6.99% 10.6   7 - 7.99% 0.0   8 - 8.99% 0.0   9 - 9.99% 0.0     U.S. Government Agency - Mortgage Securities 101.4 CMOs and Other Mortgage Related Securities 13.3 U.S. Treasury Obligations 8.4 ASSET ALLOCATION (% of Fund's net assets) Short-Term Investments and Net Other Assets (Liabilities) - (23.1)%
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Ginnie Mae II Pool 67.0     Ginnie Mae I Pool 28.3     US Treasury Notes 7.0     Ginnie Mae REMIC pass-thru certificates 6.9     Fannie Mae Mortgage pass-thru certificates 4.3     Freddie Mac Gold Pool 2.7     Freddie Mac Multifamily Structured Pass Through Certificates 2.6     Ginnie Mae Mortgage pass-thru certificates 2.0     Fannie Mae Guaranteed REMICS 1.7     US Treasury Bonds 1.4       123.9
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-544-8544 or by sending an e-mail to fidfunddocuments fidelity.com . The fund's contractural management fee was reduced during the reporting period.
Material Fund Change Expenses [Text Block]	The fund's contractural management fee was reduced during the reporting period.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-544-8544 or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-544-8544</span>" id="sjs-B93">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-544-8544&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B94">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B95">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Simplicity RMD Income Fund
Shareholder Report [Line Items]
Fund Name	Fidelity Simplicity RMD Income Fund℠
Class Name	Fidelity Simplicity RMD Income Fund℠
Trading Symbol	FIRNX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Simplicity RMD Income Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-544-8544
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity Simplicity RMD Income Fund℠ $ 0.46 %
Expenses Paid, Amount	$ 48
Expense Ratio, Percent	0.46%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B111">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000. Fidelity Simplicity RMD Income Fund℠   $10,000 $10,433   $10,667   $11,335   $11,631   $12,217   $13,095   $14,177   $13,108   $13,217   $14,185   Fidelity Simplicity RMD Income Composite Index℠   $10,000 $10,506   $10,897   $11,438   $11,791   $12,521   $13,555   $14,381   $13,423   $13,512   $14,510   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Fidelity Simplicity RMD Income Fund℠ 7.32% 3.03% 3.56% Fidelity Simplicity RMD Income Composite Index℠ 7.39% 2.99% 3.79% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 29,144,265
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 143,976
Investment Company Portfolio Turnover	20%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 20 %
Holdings [Text Block]	Bond Funds 51.2 Inflation-Protected Bond Funds 20.5 International Equity Funds 13.6 Domestic Equity Funds 9.3 Short-Term Funds 1.1 Short-Term Investments and Net Other Assets (Liabilities) 4.3 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Investment Grade Bond Fund 43.1     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 19.9     Fidelity Series Emerging Markets Opportunities Fund 4.5     Fidelity Series International Developed Markets Bond Index Fund 3.9     Fidelity Series Long-Term Treasury Bond Index Fund 2.7     Fidelity Series International Growth Fund 2.0     Fidelity Series International Value Fund 1.9     Fidelity Series Overseas Fund 1.9     Fidelity Series Growth Company Fund 1.7     Fidelity Series International Small Cap Fund 1.5       83.1
Fidelity Managed Retirement 2030 Fund - Class K
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2030 Fund℠
Class Name	Fidelity Managed Retirement 2030 Fund℠ Class K
Trading Symbol	FMREX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2030 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-835-5092
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K $ 0.39 %
Expenses Paid, Amount	$ 41
Expense Ratio, Percent	0.39%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B137">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 16, 2019 through July 31, 2024. Initial investment of $10,000. Class K   $10,000 $10,977   $13,138   $11,785   $12,235   $13,460   Fidelity Managed Retirement 2030 Composite Index℠   $10,000 $11,008   $12,899   $11,710   $12,137   $13,343   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,766   $10,690   $9,716   $9,389   $9,868     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class K 10.01% 6.17% Fidelity Managed Retirement 2030 Composite Index℠ 9.94% 5.99% Bloomberg U.S. Aggregate Bond Index 5.10% -0.27% A   From August 16, 2019   Visit www.401k.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 16, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 42,605,634
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 175,975
Investment Company Portfolio Turnover	40%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 40 %
Holdings [Text Block]	Bond Funds 39.6 Domestic Equity Funds 24.8 International Equity Funds 24.0 Inflation-Protected Bond Funds 11.6 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Government Bond Index Fund 9.2     Fidelity Series Investment Grade Bond Fund 9.0     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 7.7     Fidelity Series Emerging Markets Opportunities Fund 6.8     Fidelity Series Large Cap Value Index Fund 6.7     Fidelity Series Corporate Bond Fund 5.9     Fidelity Series Investment Grade Securitized Fund 5.8     Fidelity Series Blue Chip Growth Fund 5.6     Fidelity Series Long-Term Treasury Bond Index Fund 4.3     Fidelity Series International Developed Markets Bond Index Fund 4.0       65.0
Fidelity Advisor Managed Retirement 2015 Fund - Class A
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2015 Fund℠
Class Name	Fidelity Advisor Managed Retirement 2015 Fund℠ Class A
Trading Symbol	FARSX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2015 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-877-208-0098
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $ 0.71 %
Expenses Paid, Amount	$ 74
Expense Ratio, Percent	0.71%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B164">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000 and the current sales charge was paid. Class A   $9,425 $9,926   $10,072   $11,024   $11,516   $12,006   $12,912   $14,501   $13,202   $13,367   $14,397   Fidelity Managed Retirement 2015 Composite Index℠   $10,000 $10,602   $10,999   $11,887   $12,527   $13,298   $14,448   $16,010   $14,787   $15,032   $16,259   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Class A (incl. 5.75% sales charge)   1.51% 2.48% 3.71% Class A (without 5.75% sales charge) 7.71% 3.70% 4.33% Fidelity Managed Retirement 2015 Composite Index℠ 8.16% 4.10% 4.98% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit institutional.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 5,479,558
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 25,594
Investment Company Portfolio Turnover	34%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 34 %
Holdings [Text Block]	Bond Funds 48.3 Inflation-Protected Bond Funds 18.0 International Equity Funds 16.7 Domestic Equity Funds 13.9 Short-Term Funds 2.5 Short-Term Investments and Net Other Assets (Liabilities) 0.6 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 15.1     Fidelity Series Government Bond Index Fund 12.3     Fidelity Series Investment Grade Bond Fund 12.0     Fidelity Series Corporate Bond Fund 7.9     Fidelity Series Investment Grade Securitized Fund 7.8     Fidelity Series Emerging Markets Opportunities Fund 5.2     Fidelity Series International Developed Markets Bond Index Fund 4.0     Fidelity Series Large Cap Value Index Fund 3.7     Fidelity Series Blue Chip Growth Fund 3.0     Fidelity Series Long-Term Treasury Bond Index Fund 2.9       73.9
Fidelity Managed Retirement 2020 Fund - Class K
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2020 Fund℠
Class Name	Fidelity Managed Retirement 2020 Fund℠ Class K
Trading Symbol	FKRVX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2020 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-835-5092
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K $ 0.37 %
Expenses Paid, Amount	$ 39
Expense Ratio, Percent	0.37%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B190">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 1, 2019 through July 31, 2024. Initial investment of $10,000. Class K   $10,000 $10,831   $12,514   $11,349   $11,622   $12,642   Fidelity Managed Retirement 2020 Composite Index℠   $10,000 $10,886   $12,346   $11,327   $11,594   $12,615   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,941   $10,864   $9,874   $9,541   $10,028     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class K 8.78% 4.80% Fidelity Managed Retirement 2020 Composite Index℠ 8.80% 4.75% Bloomberg U.S. Aggregate Bond Index 5.10% 0.06% A   From August 1, 2019   Visit www.401k.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 01, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 8,371,922
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 38,515
Investment Company Portfolio Turnover	32%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 32 %
Holdings [Text Block]	Bond Funds 45.9 International Equity Funds 19.3 Domestic Equity Funds 17.9 Inflation-Protected Bond Funds 15.8 Short-Term Funds 0.9 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Government Bond Index Fund 11.5     Fidelity Series Investment Grade Bond Fund 11.2     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 11.1     Fidelity Series Corporate Bond Fund 7.5     Fidelity Series Investment Grade Securitized Fund 7.3     Fidelity Series Emerging Markets Opportunities Fund 5.9     Fidelity Series Large Cap Value Index Fund 4.8     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 4.7     Fidelity Series International Developed Markets Bond Index Fund 4.0     Fidelity Series Blue Chip Growth Fund 3.9       71.9
Fidelity Simplicity RMD 2020 Fund
Shareholder Report [Line Items]
Fund Name	Fidelity Simplicity RMD 2020 Fund℠
Class Name	Fidelity Simplicity RMD 2020 Fund℠
Trading Symbol	FIRWX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Simplicity RMD 2020 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-544-8544
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity Simplicity RMD 2020 Fund℠ $ 0.56 %
Expenses Paid, Amount	$ 59
Expense Ratio, Percent	0.56%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B217">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000. Fidelity Simplicity RMD 2020 Fund℠   $10,000 $10,598   $10,748   $11,912   $12,629   $13,139   $14,174   $16,624   $14,857   $15,519   $17,134   Fidelity Simplicity RMD 2020 Composite Index℠   $10,000 $10,628   $11,005   $12,009   $12,829   $13,603   $14,791   $16,901   $15,293   $15,868   $17,461   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Fidelity Simplicity RMD 2020 Fund℠ 10.41% 5.45% 5.53% Fidelity Simplicity RMD 2020 Composite Index℠ 10.04% 5.12% 5.73% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 47,578,281
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 274,828
Investment Company Portfolio Turnover	23%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 23 %
Holdings [Text Block]	Bond Funds 38.4 Domestic Equity Funds 25.5 International Equity Funds 24.4 Inflation-Protected Bond Funds 11.7 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Investment Grade Bond Fund 27.9     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 8.4     Fidelity Series Emerging Markets Opportunities Fund 7.0     Fidelity Series Long-Term Treasury Bond Index Fund 5.1     Fidelity Series Growth Company Fund 4.7     Fidelity Series Large Cap Stock Fund 4.3     Fidelity Series International Growth Fund 4.3     Fidelity Series International Value Fund 4.2     Fidelity Series Overseas Fund 4.2     Fidelity Series International Developed Markets Bond Index Fund 4.0       74.1
Fidelity Managed Retirement 2020 Fund
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2020 Fund℠
Class Name	Fidelity Managed Retirement 2020 Fund℠
Trading Symbol	FIRVX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2020 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-544-8544
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity Managed Retirement 2020 Fund℠ $ 0.47 %
Expenses Paid, Amount	$ 49
Expense Ratio, Percent	0.47%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B243">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000. Fidelity Managed Retirement 2020 Fund℠   $10,000 $10,584   $10,745   $11,870   $12,529   $13,065   $14,116   $16,296   $14,764   $15,102   $16,412   Fidelity Managed Retirement 2020 Composite Index℠   $10,000 $10,619   $11,003   $11,968   $12,723   $13,505   $14,696   $16,666   $15,291   $15,651   $17,029   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Fidelity Managed Retirement 2020 Fund℠ 8.67% 4.67% 5.08% Fidelity Managed Retirement 2020 Composite Index℠ 8.80% 4.75% 5.47% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 8,371,922
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 38,515
Investment Company Portfolio Turnover	32%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 32 %
Holdings [Text Block]	Bond Funds 45.9 International Equity Funds 19.3 Domestic Equity Funds 17.9 Inflation-Protected Bond Funds 15.8 Short-Term Funds 0.9 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Government Bond Index Fund 11.5     Fidelity Series Investment Grade Bond Fund 11.2     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 11.1     Fidelity Series Corporate Bond Fund 7.5     Fidelity Series Investment Grade Securitized Fund 7.3     Fidelity Series Emerging Markets Opportunities Fund 5.9     Fidelity Series Large Cap Value Index Fund 4.8     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 4.7     Fidelity Series International Developed Markets Bond Index Fund 4.0     Fidelity Series Blue Chip Growth Fund 3.9       71.9
Fidelity Managed Retirement 2010 Fund - Class K
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2010 Fund℠
Class Name	Fidelity Managed Retirement 2010 Fund℠ Class K
Trading Symbol	FRQKX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2010 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-835-5092
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K $ 0.35 %
Expenses Paid, Amount	$ 36
Expense Ratio, Percent	0.35%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B269">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 1, 2019 through July 31, 2024. Initial investment of $10,000. Class K   $10,000 $10,752   $11,809   $10,866   $10,953   $11,759   Fidelity Managed Retirement 2010 Composite Index℠   $10,000 $10,829   $11,713   $10,888   $10,991   $11,818   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,941   $10,864   $9,874   $9,541   $10,028     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class K 7.36% 3.29% Fidelity Managed Retirement 2010 Composite Index℠ 7.52% 3.39% Bloomberg U.S. Aggregate Bond Index 5.10% 0.06% A   From August 1, 2019   Visit www.401k.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 01, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 5,472,463
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 25,116
Investment Company Portfolio Turnover	25%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 25 %
Holdings [Text Block]	Bond Funds 50.8 Inflation-Protected Bond Funds 20.1 International Equity Funds 14.1 Domestic Equity Funds 10.0 Short-Term Funds 4.0 Short-Term Investments and Net Other Assets (Liabilities) 1.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 19.2     Fidelity Series Government Bond Index Fund 13.1     Fidelity Series Investment Grade Bond Fund 12.8     Fidelity Series Corporate Bond Fund 8.5     Fidelity Series Investment Grade Securitized Fund 8.3     Fidelity Series Emerging Markets Opportunities Fund 4.7     Fidelity Series International Developed Markets Bond Index Fund 3.9     Fidelity Series Treasury Bill Index Fund 3.0     Fidelity Series Long-Term Treasury Bond Index Fund 2.7     Fidelity Series Large Cap Value Index Fund 2.6       78.8
Fidelity Managed Retirement 2010 Fund - Class K6
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2010 Fund℠
Class Name	Fidelity Managed Retirement 2010 Fund℠ Class K6
Trading Symbol	FRQHX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2010 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1-800-835-5092
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K6 $ 0.25 %
Expenses Paid, Amount	$ 26
Expense Ratio, Percent	0.25%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B297">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 1, 2019 through July 31, 2024. Initial investment of $10,000. Class K6   $10,000 $10,764   $11,833   $10,899   $10,997   $11,818   Fidelity Managed Retirement 2010 Composite Index℠   $10,000 $10,829   $11,713   $10,888   $10,991   $11,818   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,941   $10,864   $9,874   $9,541   $10,028     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class K6 7.47% 3.39% Fidelity Managed Retirement 2010 Composite Index℠ 7.52% 3.39% Bloomberg U.S. Aggregate Bond Index 5.10% 0.06% A   From August 1, 2019   Visit www.401k.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 01, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 5,472,463
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 25,116
Investment Company Portfolio Turnover	25%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 25 %
Holdings [Text Block]	Bond Funds 50.8 Inflation-Protected Bond Funds 20.1 International Equity Funds 14.1 Domestic Equity Funds 10.0 Short-Term Funds 4.0 Short-Term Investments and Net Other Assets (Liabilities) 1.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 19.2     Fidelity Series Government Bond Index Fund 13.1     Fidelity Series Investment Grade Bond Fund 12.8     Fidelity Series Corporate Bond Fund 8.5     Fidelity Series Investment Grade Securitized Fund 8.3     Fidelity Series Emerging Markets Opportunities Fund 4.7     Fidelity Series International Developed Markets Bond Index Fund 3.9     Fidelity Series Treasury Bill Index Fund 3.0     Fidelity Series Long-Term Treasury Bond Index Fund 2.7     Fidelity Series Large Cap Value Index Fund 2.6       78.8
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com . Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-835-5092</span>" id="sjs-B311">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-835-5092&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B312">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B313">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Managed Retirement 2025 Fund - Class K
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2025 Fund℠
Class Name	Fidelity Managed Retirement 2025 Fund℠ Class K
Trading Symbol	FKRFX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2025 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-835-5092
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K $ 0.38 %
Expenses Paid, Amount	$ 39
Expense Ratio, Percent	0.38%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B329">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 1, 2019 through July 31, 2024. Initial investment of $10,000. Class K   $10,000 $10,863   $12,808   $11,534   $11,904   $13,033   Fidelity Managed Retirement 2025 Composite Index℠   $10,000 $10,908   $12,605   $11,491   $11,844   $12,962   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,941   $10,864   $9,874   $9,541   $10,028     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class K 9.49% 5.44% Fidelity Managed Retirement 2025 Composite Index℠ 9.44% 5.32% Bloomberg U.S. Aggregate Bond Index 5.10% 0.06% A   From August 1, 2019   Visit www.401k.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 01, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 50,060,844
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 222,391
Investment Company Portfolio Turnover	36%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 36 %
Holdings [Text Block]	Bond Funds 42.7 International Equity Funds 22.0 Domestic Equity Funds 21.8 Inflation-Protected Bond Funds 13.5 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Government Bond Index Fund 10.4     Fidelity Series Investment Grade Bond Fund 10.1     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 7.0     Fidelity Series Corporate Bond Fund 6.7     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 6.5     Fidelity Series Investment Grade Securitized Fund 6.5     Fidelity Series Emerging Markets Opportunities Fund 6.5     Fidelity Series Large Cap Value Index Fund 5.9     Fidelity Series Blue Chip Growth Fund 4.9     Fidelity Series International Developed Markets Bond Index Fund 4.0       68.5
Fidelity Advisor Managed Retirement 2025 Fund - Class A
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2025 Fund℠
Class Name	Fidelity Advisor Managed Retirement 2025 Fund℠ Class A
Trading Symbol	FARFX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2025 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-877-208-0098
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $ 0.72 %
Expenses Paid, Amount	$ 75
Expense Ratio, Percent	0.72%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B356">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000 and the current sales charge was paid. Class A   $9,425 $9,982   $10,085   $11,179   $11,822   $12,279   $13,263   $15,583   $13,987   $14,384   $15,692   Fidelity Managed Retirement 2025 Composite Index℠   $10,000 $10,641   $11,013   $12,048   $12,871   $13,663   $14,888   $17,204   $15,685   $16,166   $17,692   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Class A (incl. 5.75% sales charge)   2.82% 3.79% 4.61% Class A (without 5.75% sales charge) 9.09% 5.03% 5.23% Fidelity Managed Retirement 2025 Composite Index℠ 9.44% 5.31% 5.87% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit institutional.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 50,060,844
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 222,391
Investment Company Portfolio Turnover	36%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 36 %
Holdings [Text Block]	Bond Funds 42.7 International Equity Funds 22.0 Domestic Equity Funds 21.8 Inflation-Protected Bond Funds 13.5 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Government Bond Index Fund 10.4     Fidelity Series Investment Grade Bond Fund 10.1     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 7.0     Fidelity Series Corporate Bond Fund 6.7     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 6.5     Fidelity Series Investment Grade Securitized Fund 6.5     Fidelity Series Emerging Markets Opportunities Fund 6.5     Fidelity Series Large Cap Value Index Fund 5.9     Fidelity Series Blue Chip Growth Fund 4.9     Fidelity Series International Developed Markets Bond Index Fund 4.0       68.5
Fidelity Advisor Managed Retirement 2030 Fund - Class I
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2030 Fund℠
Class Name	Fidelity Advisor Managed Retirement 2030 Fund℠ Class I
Trading Symbol	FMRDX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2030 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-877-208-0098
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $ 0.48 %
Expenses Paid, Amount	$ 51
Expense Ratio, Percent	0.48%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B382">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 16, 2019 through July 31, 2024. Initial investment of $10,000. Class I   $10,000 $10,967   $13,119   $11,746   $12,181   $13,386   Fidelity Managed Retirement 2030 Composite Index℠   $10,000 $11,008   $12,899   $11,710   $12,137   $13,343   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,766   $10,690   $9,716   $9,389   $9,868     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class I 9.89% 6.05% Fidelity Managed Retirement 2030 Composite Index℠ 9.94% 5.99% Bloomberg U.S. Aggregate Bond Index 5.10% -0.27% A   From August 16, 2019   Visit institutional.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 16, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 42,605,634
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 175,975
Investment Company Portfolio Turnover	40%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 40 %
Holdings [Text Block]	Bond Funds 39.6 Domestic Equity Funds 24.8 International Equity Funds 24.0 Inflation-Protected Bond Funds 11.6 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Government Bond Index Fund 9.2     Fidelity Series Investment Grade Bond Fund 9.0     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 7.7     Fidelity Series Emerging Markets Opportunities Fund 6.8     Fidelity Series Large Cap Value Index Fund 6.7     Fidelity Series Corporate Bond Fund 5.9     Fidelity Series Investment Grade Securitized Fund 5.8     Fidelity Series Blue Chip Growth Fund 5.6     Fidelity Series Long-Term Treasury Bond Index Fund 4.3     Fidelity Series International Developed Markets Bond Index Fund 4.0       65.0
Fidelity Advisor Managed Retirement 2030 Fund - Class A
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2030 Fund℠
Class Name	Fidelity Advisor Managed Retirement 2030 Fund℠ Class A
Trading Symbol	FMRBX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2030 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-877-208-0098
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $ 0.73 %
Expenses Paid, Amount	$ 77
Expense Ratio, Percent	0.73%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B409">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 16, 2019 through July 31, 2024. Initial investment of $10,000 and the current sales charge was paid. Class A   $9,425 $10,316   $12,305   $10,994   $11,374   $12,464   Fidelity Managed Retirement 2030 Composite Index℠   $10,000 $11,008   $12,899   $11,710   $12,137   $13,343   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,766   $10,690   $9,716   $9,389   $9,868     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class A (incl. 5.75% sales charge)   3.29% 4.54% Class A (without 5.75% sales charge) 9.59% 5.80% Fidelity Managed Retirement 2030 Composite Index℠ 9.94% 5.99% Bloomberg U.S. Aggregate Bond Index 5.10% -0.27% A   From August 16, 2019   Visit institutional.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 16, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 42,605,634
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 175,975
Investment Company Portfolio Turnover	40%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 40 %
Holdings [Text Block]	Bond Funds 39.6 Domestic Equity Funds 24.8 International Equity Funds 24.0 Inflation-Protected Bond Funds 11.6 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Government Bond Index Fund 9.2     Fidelity Series Investment Grade Bond Fund 9.0     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 7.7     Fidelity Series Emerging Markets Opportunities Fund 6.8     Fidelity Series Large Cap Value Index Fund 6.7     Fidelity Series Corporate Bond Fund 5.9     Fidelity Series Investment Grade Securitized Fund 5.8     Fidelity Series Blue Chip Growth Fund 5.6     Fidelity Series Long-Term Treasury Bond Index Fund 4.3     Fidelity Series International Developed Markets Bond Index Fund 4.0       65.0
Fidelity Advisor Managed Retirement Income Fund - Class A
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement Income Fund℠
Class Name	Fidelity Advisor Managed Retirement Income Fund℠ Class A
Trading Symbol	FRAMX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement Income Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-877-208-0098
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $ 0.70 %
Expenses Paid, Amount	$ 73
Expense Ratio, Percent	0.70%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B436">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000 and the current sales charge was paid. Class A   $9,425 $9,754   $9,962   $10,433   $10,679   $11,189   $11,957   $12,819   $11,807   $11,823   $12,629   Fidelity Managed Retirement Income Composite Index℠   $10,000 $10,453   $10,823   $11,247   $11,594   $12,312   $13,328   $14,141   $13,199   $13,286   $14,268   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Class A (incl. 5.75% sales charge)   0.67% 1.24% 2.36% Class A (without 5.75% sales charge) 6.82% 2.45% 2.97% Fidelity Managed Retirement Income Composite Index℠ 7.39% 2.99% 3.62% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit institutional.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 14,747,002
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 64,102
Investment Company Portfolio Turnover	33%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 33 %
Holdings [Text Block]	Bond Funds 51.2 Inflation-Protected Bond Funds 20.5 International Equity Funds 13.6 Domestic Equity Funds 9.3 Short-Term Funds 4.3 Short-Term Investments and Net Other Assets (Liabilities) 1.1 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 19.9     Fidelity Series Government Bond Index Fund 13.3     Fidelity Series Investment Grade Bond Fund 12.9     Fidelity Series Corporate Bond Fund 8.6     Fidelity Series Investment Grade Securitized Fund 8.4     Fidelity Series Emerging Markets Opportunities Fund 4.6     Fidelity Series International Developed Markets Bond Index Fund 3.9     Fidelity Series Treasury Bill Index Fund 3.2     Fidelity Series Long-Term Treasury Bond Index Fund 2.6     Fidelity Series Large Cap Value Index Fund 2.4       79.8
Fidelity Advisor Managed Retirement 2015 Fund - Class I
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2015 Fund℠
Class Name	Fidelity Advisor Managed Retirement 2015 Fund℠ Class I
Trading Symbol	FRASX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2015 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-877-208-0098
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $ 0.46 %
Expenses Paid, Amount	$ 48
Expense Ratio, Percent	0.46%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B462">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000. Class I   $10,000 $10,558   $10,741   $11,786   $12,343   $12,899   $13,907   $15,657   $14,292   $14,504   $15,660   Fidelity Managed Retirement 2015 Composite Index℠   $10,000 $10,602   $10,999   $11,887   $12,527   $13,298   $14,448   $16,010   $14,787   $15,032   $16,259   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Class I 7.97% 3.96% 4.59% Fidelity Managed Retirement 2015 Composite Index℠ 8.16% 4.10% 4.98% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit institutional.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 5,479,558
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 25,594
Investment Company Portfolio Turnover	34%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 34 %
Holdings [Text Block]	Bond Funds 48.3 Inflation-Protected Bond Funds 18.0 International Equity Funds 16.7 Domestic Equity Funds 13.9 Short-Term Funds 2.5 Short-Term Investments and Net Other Assets (Liabilities) 0.6 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 15.1     Fidelity Series Government Bond Index Fund 12.3     Fidelity Series Investment Grade Bond Fund 12.0     Fidelity Series Corporate Bond Fund 7.9     Fidelity Series Investment Grade Securitized Fund 7.8     Fidelity Series Emerging Markets Opportunities Fund 5.2     Fidelity Series International Developed Markets Bond Index Fund 4.0     Fidelity Series Large Cap Value Index Fund 3.7     Fidelity Series Blue Chip Growth Fund 3.0     Fidelity Series Long-Term Treasury Bond Index Fund 2.9       73.9
Fidelity Managed Retirement 2025 Fund - Class K6
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2025 Fund℠
Class Name	Fidelity Managed Retirement 2025 Fund℠ Class K6
Trading Symbol	FHRFX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2025 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1-800-835-5092
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K6 $ 0.27 %
Expenses Paid, Amount	$ 28
Expense Ratio, Percent	0.27%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B489">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 1, 2019 through July 31, 2024. Initial investment of $10,000. Class K6   $10,000 $10,873   $12,833   $11,568   $11,950   $13,096   Fidelity Managed Retirement 2025 Composite Index℠   $10,000 $10,908   $12,605   $11,491   $11,844   $12,962   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,941   $10,864   $9,874   $9,541   $10,028     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class K6 9.59% 5.54% Fidelity Managed Retirement 2025 Composite Index℠ 9.44% 5.32% Bloomberg U.S. Aggregate Bond Index 5.10% 0.06% A   From August 1, 2019   Visit www.401k.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 01, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 50,060,844
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 222,391
Investment Company Portfolio Turnover	36%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 36 %
Holdings [Text Block]	Bond Funds 42.7 International Equity Funds 22.0 Domestic Equity Funds 21.8 Inflation-Protected Bond Funds 13.5 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Government Bond Index Fund 10.4     Fidelity Series Investment Grade Bond Fund 10.1     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 7.0     Fidelity Series Corporate Bond Fund 6.7     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 6.5     Fidelity Series Investment Grade Securitized Fund 6.5     Fidelity Series Emerging Markets Opportunities Fund 6.5     Fidelity Series Large Cap Value Index Fund 5.9     Fidelity Series Blue Chip Growth Fund 4.9     Fidelity Series International Developed Markets Bond Index Fund 4.0       68.5
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com . Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-835-5092</span>" id="sjs-B503">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-835-5092&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B504">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B505">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Advisor Managed Retirement 2025 Fund - Class I
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2025 Fund℠
Class Name	Fidelity Advisor Managed Retirement 2025 Fund℠ Class I
Trading Symbol	FIRFX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2025 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-877-208-0098
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $ 0.47 %
Expenses Paid, Amount	$ 49
Expense Ratio, Percent	0.47%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B521">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000. Class I   $10,000 $10,617   $10,751   $11,949   $12,669   $13,192   $14,286   $16,826   $15,140   $15,609   $17,071   Fidelity Managed Retirement 2025 Composite Index℠   $10,000 $10,641   $11,013   $12,048   $12,871   $13,663   $14,888   $17,204   $15,685   $16,166   $17,692   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Class I 9.36% 5.29% 5.49% Fidelity Managed Retirement 2025 Composite Index℠ 9.44% 5.31% 5.87% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit institutional.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 50,060,844
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 222,391
Investment Company Portfolio Turnover	36%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 36 %
Holdings [Text Block]	Bond Funds 42.7 International Equity Funds 22.0 Domestic Equity Funds 21.8 Inflation-Protected Bond Funds 13.5 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Government Bond Index Fund 10.4     Fidelity Series Investment Grade Bond Fund 10.1     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 7.0     Fidelity Series Corporate Bond Fund 6.7     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 6.5     Fidelity Series Investment Grade Securitized Fund 6.5     Fidelity Series Emerging Markets Opportunities Fund 6.5     Fidelity Series Large Cap Value Index Fund 5.9     Fidelity Series Blue Chip Growth Fund 4.9     Fidelity Series International Developed Markets Bond Index Fund 4.0       68.5
Fidelity Managed Retirement 2035 Fund - Class K6
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2035 Fund℠
Class Name	Fidelity Managed Retirement 2035 Fund℠ Class K6
Trading Symbol	FMRJX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2035 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1-800-835-5092
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K6 $ 0.28 %
Expenses Paid, Amount	$ 30
Expense Ratio, Percent	0.28%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B548">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE December 15, 2022 through July 31, 2024. Initial investment of $10,000. Class K6   $10,000 $10,819   $11,980   Fidelity Managed Retirement 2035 Composite Index   $10,000 $10,787   $11,909   S&P 500® Index   $10,000 $11,898   $14,533   Bloomberg U.S. Aggregate Bond Index   $10,000 $9,962   $10,470     2022 2023 2024 Effective February 2, 2024, the fund began comparing its performance to Bloomberg U.S. Aggregate Bond Index rather than S&P 500® Index because the Bloomberg U.S. Aggregate Bond Index conforms more closely to the fund's investment policies.
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class K6 10.73% 11.74% Fidelity Managed Retirement 2035 Composite Index 10.39% 11.33% S&P 500® Index 24.56% 26.43% Bloomberg U.S. Aggregate Bond Index 5.10% 2.86% A   From December 15, 2022   Effective February 2, 2024, the fund began comparing its performance to Bloomberg U.S. Aggregate Bond Index rather than S&P 500® Index because the Bloomberg U.S. Aggregate Bond Index conforms more closely to the fund's investment policies.   Visit www.401k.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Dec. 15, 2022
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 10,439,772
Holdings Count | shares	32
Advisory Fees Paid, Amount	$ 16,710
Investment Company Portfolio Turnover	60%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 32 Total Advisory Fee $ Portfolio Turnover 60 %
Holdings [Text Block]	Bond Funds 36.9 Domestic Equity Funds 27.5 International Equity Funds 25.8 Inflation-Protected Bond Funds 9.8 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 8.4     Fidelity Series Government Bond Index Fund 8.2     Fidelity Series Investment Grade Bond Fund 8.0     Fidelity Series Large Cap Value Index Fund 7.4     Fidelity Series Emerging Markets Opportunities Fund 7.3     Fidelity Series Blue Chip Growth Fund 6.2     Fidelity Series Corporate Bond Fund 5.3     Fidelity Series Investment Grade Securitized Fund 5.2     Fidelity Series Long-Term Treasury Bond Index Fund 4.8     Fidelity Series International Growth Fund 4.1       64.9
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com . Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-835-5092</span>" id="sjs-B562">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-835-5092&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B563">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B564">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Managed Retirement 2010 Fund
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2010 Fund℠
Class Name	Fidelity Managed Retirement 2010 Fund℠
Trading Symbol	FIRQX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2010 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-544-8544
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity Managed Retirement 2010 Fund℠ $ 0.45 %
Expenses Paid, Amount	$ 47
Expense Ratio, Percent	0.45%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B580">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000. Fidelity Managed Retirement 2010 Fund℠   $10,000 $10,527   $10,730   $11,671   $12,123   $12,696   $13,643   $14,970   $13,761   $13,856   $14,860   Fidelity Managed Retirement 2010 Composite Index℠   $10,000 $10,582   $10,986   $11,778   $12,300   $13,058   $14,159   $15,315   $14,237   $14,371   $15,452   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Fidelity Managed Retirement 2010 Fund℠ 7.25% 3.20% 4.04% Fidelity Managed Retirement 2010 Composite Index℠ 7.52% 3.42% 4.45% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 5,472,463
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 25,116
Investment Company Portfolio Turnover	25%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 25 %
Holdings [Text Block]	Bond Funds 50.8 Inflation-Protected Bond Funds 20.1 International Equity Funds 14.1 Domestic Equity Funds 10.0 Short-Term Funds 4.0 Short-Term Investments and Net Other Assets (Liabilities) 1.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 19.2     Fidelity Series Government Bond Index Fund 13.1     Fidelity Series Investment Grade Bond Fund 12.8     Fidelity Series Corporate Bond Fund 8.5     Fidelity Series Investment Grade Securitized Fund 8.3     Fidelity Series Emerging Markets Opportunities Fund 4.7     Fidelity Series International Developed Markets Bond Index Fund 3.9     Fidelity Series Treasury Bill Index Fund 3.0     Fidelity Series Long-Term Treasury Bond Index Fund 2.7     Fidelity Series Large Cap Value Index Fund 2.6       78.8
Fidelity Managed Retirement Income Fund
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement Income Fund℠
Class Name	Fidelity Managed Retirement Income Fund℠
Trading Symbol	FIRMX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement Income Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-544-8544
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity Managed Retirement Income Fund℠ $ 0.45 %
Expenses Paid, Amount	$ 47
Expense Ratio, Percent	0.45%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B606">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000. Fidelity Managed Retirement Income Fund℠   $10,000 $10,376   $10,622   $11,151   $11,445   $12,021   $12,878   $13,841   $12,779   $12,826   $13,738   Fidelity Managed Retirement Income Composite Index℠   $10,000 $10,453   $10,823   $11,247   $11,594   $12,312   $13,328   $14,141   $13,199   $13,286   $14,268   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Fidelity Managed Retirement Income Fund℠ 7.11% 2.70% 3.23% Fidelity Managed Retirement Income Composite Index℠ 7.39% 2.99% 3.62% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 14,747,002
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 64,102
Investment Company Portfolio Turnover	33%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 33 %
Holdings [Text Block]	Bond Funds 51.2 Inflation-Protected Bond Funds 20.5 International Equity Funds 13.6 Domestic Equity Funds 9.3 Short-Term Funds 4.3 Short-Term Investments and Net Other Assets (Liabilities) 1.1 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 19.9     Fidelity Series Government Bond Index Fund 13.3     Fidelity Series Investment Grade Bond Fund 12.9     Fidelity Series Corporate Bond Fund 8.6     Fidelity Series Investment Grade Securitized Fund 8.4     Fidelity Series Emerging Markets Opportunities Fund 4.6     Fidelity Series International Developed Markets Bond Index Fund 3.9     Fidelity Series Treasury Bill Index Fund 3.2     Fidelity Series Long-Term Treasury Bond Index Fund 2.6     Fidelity Series Large Cap Value Index Fund 2.4       79.8
Fidelity Advisor Managed Retirement Income Fund - Class I
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement Income Fund℠
Class Name	Fidelity Advisor Managed Retirement Income Fund℠ Class I
Trading Symbol	FRIMX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement Income Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-877-208-0098
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $ 0.45 %
Expenses Paid, Amount	$ 47
Expense Ratio, Percent	0.45%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B632">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000. Class I   $10,000 $10,376   $10,622   $11,153   $11,445   $12,022   $12,880   $13,843   $12,782   $12,830   $13,739   Fidelity Managed Retirement Income Composite Index℠   $10,000 $10,453   $10,823   $11,247   $11,594   $12,312   $13,328   $14,141   $13,199   $13,286   $14,268   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Class I 7.09% 2.71% 3.23% Fidelity Managed Retirement Income Composite Index℠ 7.39% 2.99% 3.62% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit institutional.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 14,747,002
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 64,102
Investment Company Portfolio Turnover	33%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 33 %
Holdings [Text Block]	Bond Funds 51.2 Inflation-Protected Bond Funds 20.5 International Equity Funds 13.6 Domestic Equity Funds 9.3 Short-Term Funds 4.3 Short-Term Investments and Net Other Assets (Liabilities) 1.1 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 19.9     Fidelity Series Government Bond Index Fund 13.3     Fidelity Series Investment Grade Bond Fund 12.9     Fidelity Series Corporate Bond Fund 8.6     Fidelity Series Investment Grade Securitized Fund 8.4     Fidelity Series Emerging Markets Opportunities Fund 4.6     Fidelity Series International Developed Markets Bond Index Fund 3.9     Fidelity Series Treasury Bill Index Fund 3.2     Fidelity Series Long-Term Treasury Bond Index Fund 2.6     Fidelity Series Large Cap Value Index Fund 2.4       79.8
Fidelity Managed Retirement 2030 Fund
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2030 Fund℠
Class Name	Fidelity Managed Retirement 2030 Fund℠
Trading Symbol	FMRAX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2030 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-544-8544
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity Managed Retirement 2030 Fund℠ $ 0.48 %
Expenses Paid, Amount	$ 50
Expense Ratio, Percent	0.48%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B658">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 16, 2019 through July 31, 2024. Initial investment of $10,000. Fidelity Managed Retirement 2030 Fund℠   $10,000 $10,966   $13,111   $11,749   $12,185   $13,392   Fidelity Managed Retirement 2030 Composite Index℠   $10,000 $11,008   $12,899   $11,710   $12,137   $13,343   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,766   $10,690   $9,716   $9,389   $9,868     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Fidelity Managed Retirement 2030 Fund℠ 9.91% 6.06% Fidelity Managed Retirement 2030 Composite Index℠ 9.94% 5.99% Bloomberg U.S. Aggregate Bond Index 5.10% -0.27% A   From August 16, 2019   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 16, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 42,605,634
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 175,975
Investment Company Portfolio Turnover	40%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 40 %
Holdings [Text Block]	Bond Funds 39.6 Domestic Equity Funds 24.8 International Equity Funds 24.0 Inflation-Protected Bond Funds 11.6 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Government Bond Index Fund 9.2     Fidelity Series Investment Grade Bond Fund 9.0     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 7.7     Fidelity Series Emerging Markets Opportunities Fund 6.8     Fidelity Series Large Cap Value Index Fund 6.7     Fidelity Series Corporate Bond Fund 5.9     Fidelity Series Investment Grade Securitized Fund 5.8     Fidelity Series Blue Chip Growth Fund 5.6     Fidelity Series Long-Term Treasury Bond Index Fund 4.3     Fidelity Series International Developed Markets Bond Index Fund 4.0       65.0
Fidelity Simplicity RMD 2030 Fund
Shareholder Report [Line Items]
Fund Name	Fidelity Simplicity RMD 2030 Fund℠
Class Name	Fidelity Simplicity RMD 2030 Fund℠
Trading Symbol	FSRMX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Simplicity RMD 2030 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-544-8544
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity Simplicity RMD 2030 Fund℠ $ 0.65 %
Expenses Paid, Amount	$ 69
Expense Ratio, Percent	0.65%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B685">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE December 15, 2022 through July 31, 2024. Initial investment of $10,000. Fidelity Simplicity RMD 2030 Fund℠   $10,000 $11,013   $12,368   Fidelity Simplicity RMD 2030 Composite Index℠   $10,000 $10,965   $12,247   S&P 500® Index   $10,000 $11,898   $14,533     2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Fidelity Simplicity RMD 2030 Fund℠ 12.31% 13.95% Fidelity Simplicity RMD 2030 Composite Index℠ 11.69% 13.26% S&P 500® Index 22.15% 25.83% A   From December 15, 2022   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Dec. 15, 2022
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 795,401
Holdings Count | shares	29
Advisory Fees Paid, Amount	$ 4,620
Investment Company Portfolio Turnover	55%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 29 Total Advisory Fee $ Portfolio Turnover 55 %
Holdings [Text Block]	Domestic Equity Funds 34.0 Bond Funds 30.9 International Equity Funds 30.1 Inflation-Protected Bond Funds 5.1 ASSET ALLOCATION (% of Fund's net assets) Short-Term Investments and Net Other Assets (Liabilities) - (0.1)%
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Investment Grade Bond Fund 18.7     Fidelity Series Emerging Markets Opportunities Fund 8.3     Fidelity Series Long-Term Treasury Bond Index Fund 6.9     Fidelity Series Growth Company Fund 6.2     Fidelity Series Large Cap Stock Fund 5.8     Fidelity Series International Growth Fund 5.5     Fidelity Series International Value Fund 5.4     Fidelity Series Overseas Fund 5.4     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 5.1     Fidelity Series Stock Selector Large Cap Value Fund 4.0       71.3
Fidelity Simplicity RMD 2025 Fund
Shareholder Report [Line Items]
Fund Name	Fidelity Simplicity RMD 2025 Fund℠
Class Name	Fidelity Simplicity RMD 2025 Fund℠
Trading Symbol	FMRHX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Simplicity RMD 2025 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-544-8544
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity Simplicity RMD 2025 Fund℠ $ 0.61 %
Expenses Paid, Amount	$ 65
Expense Ratio, Percent	0.61%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B712">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 16, 2019 through July 31, 2024. Initial investment of $10,000. Fidelity Simplicity RMD 2025 Fund℠   $10,000 $10,945   $13,157   $11,709   $12,368   $13,761   Fidelity Simplicity RMD 2025 Composite Index℠   $10,000 $10,986   $12,847   $11,582   $12,142   $13,460   S&P 500® Index   $10,000 $11,533   $15,736   $15,006   $16,959   $20,715     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Fidelity Simplicity RMD 2025 Fund℠ 11.26% 6.65% Fidelity Simplicity RMD 2025 Composite Index℠ 10.86% 6.17% S&P 500® Index 22.15% 15.81% A   From August 16, 2019   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 16, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 11,726,075
Holdings Count | shares	30
Advisory Fees Paid, Amount	$ 68,008
Investment Company Portfolio Turnover	36%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 30 Total Advisory Fee $ Portfolio Turnover 36 %
Holdings [Text Block]	Bond Funds 33.4 Domestic Equity Funds 30.0 International Equity Funds 27.4 Inflation-Protected Bond Funds 9.3 ASSET ALLOCATION (% of Fund's net assets) Short-Term Investments and Net Other Assets (Liabilities) - (0.1)%
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Investment Grade Bond Fund 21.6     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 9.3     Fidelity Series Emerging Markets Opportunities Fund 7.6     Fidelity Series Long-Term Treasury Bond Index Fund 6.5     Fidelity Series Growth Company Fund 5.5     Fidelity Series Large Cap Stock Fund 5.2     Fidelity Series International Growth Fund 4.9     Fidelity Series International Value Fund 4.9     Fidelity Series Overseas Fund 4.9     Fidelity Series International Developed Markets Bond Index Fund 3.9       74.3
Fidelity Managed Retirement 2020 Fund - Class K6
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2020 Fund℠
Class Name	Fidelity Managed Retirement 2020 Fund℠ Class K6
Trading Symbol	FHRVX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2020 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1-800-835-5092
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K6 $ 0.27 %
Expenses Paid, Amount	$ 28
Expense Ratio, Percent	0.27%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B740">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 1, 2019 through July 31, 2024. Initial investment of $10,000. Class K6   $10,000 $10,842   $12,539   $11,384   $11,669   $12,705   Fidelity Managed Retirement 2020 Composite Index℠   $10,000 $10,886   $12,346   $11,327   $11,594   $12,615   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,941   $10,864   $9,874   $9,541   $10,028     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class K6 8.88% 4.90% Fidelity Managed Retirement 2020 Composite Index℠ 8.80% 4.75% Bloomberg U.S. Aggregate Bond Index 5.10% 0.06% A   From August 1, 2019   Visit www.401k.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 01, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 8,371,922
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 38,515
Investment Company Portfolio Turnover	32%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 32 %
Holdings [Text Block]	Bond Funds 45.9 International Equity Funds 19.3 Domestic Equity Funds 17.9 Inflation-Protected Bond Funds 15.8 Short-Term Funds 0.9 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Government Bond Index Fund 11.5     Fidelity Series Investment Grade Bond Fund 11.2     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 11.1     Fidelity Series Corporate Bond Fund 7.5     Fidelity Series Investment Grade Securitized Fund 7.3     Fidelity Series Emerging Markets Opportunities Fund 5.9     Fidelity Series Large Cap Value Index Fund 4.8     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 4.7     Fidelity Series International Developed Markets Bond Index Fund 4.0     Fidelity Series Blue Chip Growth Fund 3.9       71.9
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com . Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-835-5092</span>" id="sjs-B754">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-835-5092&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B755">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B756">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Simplicity RMD 2010 Fund
Shareholder Report [Line Items]
Fund Name	Fidelity Simplicity RMD 2010 Fund℠
Class Name	Fidelity Simplicity RMD 2010 Fund℠
Trading Symbol	FIRRX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Simplicity RMD 2010 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-544-8544
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity Simplicity RMD 2010 Fund℠ $ 0.48 %
Expenses Paid, Amount	$ 50
Expense Ratio, Percent	0.48%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B772">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000. Fidelity Simplicity RMD 2010 Fund℠   $10,000 $10,548   $10,740   $11,728   $12,194   $12,763   $13,712   $15,178   $13,847   $14,147   $15,330   Fidelity Simplicity RMD 2010 Composite Index℠   $10,000 $10,594   $10,995   $11,829   $12,369   $13,129   $14,234   $15,417   $14,209   $14,465   $15,658   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Fidelity Simplicity RMD 2010 Fund℠ 8.36% 3.73% 4.37% Fidelity Simplicity RMD 2010 Composite Index℠ 8.24% 3.59% 4.59% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 10,112,022
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 48,350
Investment Company Portfolio Turnover	30%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 30 %
Holdings [Text Block]	Bond Funds 48.0 Inflation-Protected Bond Funds 17.6 International Equity Funds 17.0 Domestic Equity Funds 14.4 Short-Term Funds 0.6 Short-Term Investments and Net Other Assets (Liabilities) 2.4 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Investment Grade Bond Fund 39.7     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 14.5     Fidelity Series Emerging Markets Opportunities Fund 5.2     Fidelity Series International Developed Markets Bond Index Fund 4.0     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 3.1     Fidelity Series Long-Term Treasury Bond Index Fund 2.9     Fidelity Series International Growth Fund 2.7     Fidelity Series International Value Fund 2.7     Fidelity Series Overseas Fund 2.7     Fidelity Series Growth Company Fund 2.5       80.0
Fidelity Simplicity RMD 2015 Fund
Shareholder Report [Line Items]
Fund Name	Fidelity Simplicity RMD 2015 Fund℠
Class Name	Fidelity Simplicity RMD 2015 Fund℠
Trading Symbol	FIRUX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Simplicity RMD 2015 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-544-8544
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity Simplicity RMD 2015 Fund℠ $ 0.52 %
Expenses Paid, Amount	$ 54
Expense Ratio, Percent	0.52%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B798">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000. Fidelity Simplicity RMD 2015 Fund℠   $10,000 $10,570   $10,741   $11,823   $12,414   $12,955   $13,953   $15,895   $14,354   $14,831   $16,227   Fidelity Simplicity RMD 2015 Composite Index℠   $10,000 $10,610   $10,999   $11,923   $12,601   $13,370   $14,520   $16,153   $14,753   $15,163   $16,550   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Fidelity Simplicity RMD 2015 Fund℠ 9.41% 4.61% 4.96% Fidelity Simplicity RMD 2015 Composite Index℠ 9.15% 4.36% 5.17% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 18,974,932
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 103,222
Investment Company Portfolio Turnover	22%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 22 %
Holdings [Text Block]	Bond Funds 44.6 International Equity Funds 20.7 Domestic Equity Funds 20.0 Inflation-Protected Bond Funds 14.6 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.1 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Investment Grade Bond Fund 36.1     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 8.9     Fidelity Series Emerging Markets Opportunities Fund 6.1     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 5.7     Fidelity Series International Developed Markets Bond Index Fund 4.0     Fidelity Series Growth Company Fund 3.6     Fidelity Series International Growth Fund 3.5     Fidelity Series International Value Fund 3.5     Fidelity Series Overseas Fund 3.4     Fidelity Series Large Cap Stock Fund 3.4       78.2
Fidelity Advisor Managed Retirement 2035 Fund - Class I
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2035 Fund℠
Class Name	Fidelity Advisor Managed Retirement 2035 Fund℠ Class I
Trading Symbol	FMRYX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2035 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-877-208-0098
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $ 0.48 %
Expenses Paid, Amount	$ 51
Expense Ratio, Percent	0.48%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B824">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE December 15, 2022 through July 31, 2024. Initial investment of $10,000. Class I   $10,000 $10,807   $11,947   Fidelity Managed Retirement 2035 Composite Index   $10,000 $10,787   $11,909   S&P 500® Index   $10,000 $11,898   $14,533   Bloomberg U.S. Aggregate Bond Index   $10,000 $9,962   $10,470     2022 2023 2024 Effective February 2, 2024, the fund began comparing its performance to Bloomberg U.S. Aggregate Bond Index rather than S&P 500® Index because the Bloomberg U.S. Aggregate Bond Index conforms more closely to the fund's investment policies.
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class I 10.54% 11.55% Fidelity Managed Retirement 2035 Composite Index 10.39% 11.33% S&P 500® Index 24.56% 26.43% Bloomberg U.S. Aggregate Bond Index 5.10% 2.86% A   From December 15, 2022   Effective February 2, 2024, the fund began comparing its performance to Bloomberg U.S. Aggregate Bond Index rather than S&P 500® Index because the Bloomberg U.S. Aggregate Bond Index conforms more closely to the fund's investment policies.   Visit institutional.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Dec. 15, 2022
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 10,439,772
Holdings Count | shares	32
Advisory Fees Paid, Amount	$ 16,710
Investment Company Portfolio Turnover	60%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 32 Total Advisory Fee $ Portfolio Turnover 60 %
Holdings [Text Block]	Bond Funds 36.9 Domestic Equity Funds 27.5 International Equity Funds 25.8 Inflation-Protected Bond Funds 9.8 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 8.4     Fidelity Series Government Bond Index Fund 8.2     Fidelity Series Investment Grade Bond Fund 8.0     Fidelity Series Large Cap Value Index Fund 7.4     Fidelity Series Emerging Markets Opportunities Fund 7.3     Fidelity Series Blue Chip Growth Fund 6.2     Fidelity Series Corporate Bond Fund 5.3     Fidelity Series Investment Grade Securitized Fund 5.2     Fidelity Series Long-Term Treasury Bond Index Fund 4.8     Fidelity Series International Growth Fund 4.1       64.9
Fidelity Managed Retirement Income Fund - Class K6
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement Income Fund℠
Class Name	Fidelity Managed Retirement Income Fund℠ Class K6
Trading Symbol	FRHMX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement Income Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1-800-835-5092
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K6 $ 0.25 %
Expenses Paid, Amount	$ 26
Expense Ratio, Percent	0.25%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B852">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 1, 2019 through July 31, 2024. Initial investment of $10,000. Class K6   $10,000 $10,720   $11,544   $10,680   $10,741   $11,526   Fidelity Managed Retirement Income Composite Index℠   $10,000 $10,800   $11,459   $10,695   $10,766   $11,561   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,941   $10,864   $9,874   $9,541   $10,028     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class K6 7.31% 2.88% Fidelity Managed Retirement Income Composite Index℠ 7.39% 2.94% Bloomberg U.S. Aggregate Bond Index 5.10% 0.06% A   From August 1, 2019   Visit www.401k.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 01, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 14,747,002
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 64,102
Investment Company Portfolio Turnover	33%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 33 %
Holdings [Text Block]	Bond Funds 51.2 Inflation-Protected Bond Funds 20.5 International Equity Funds 13.6 Domestic Equity Funds 9.3 Short-Term Funds 4.3 Short-Term Investments and Net Other Assets (Liabilities) 1.1 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 19.9     Fidelity Series Government Bond Index Fund 13.3     Fidelity Series Investment Grade Bond Fund 12.9     Fidelity Series Corporate Bond Fund 8.6     Fidelity Series Investment Grade Securitized Fund 8.4     Fidelity Series Emerging Markets Opportunities Fund 4.6     Fidelity Series International Developed Markets Bond Index Fund 3.9     Fidelity Series Treasury Bill Index Fund 3.2     Fidelity Series Long-Term Treasury Bond Index Fund 2.6     Fidelity Series Large Cap Value Index Fund 2.4       79.8
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com . Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-835-5092</span>" id="sjs-B866">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-835-5092&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B867">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B868">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Managed Retirement 2030 Fund - Class K6
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2030 Fund℠
Class Name	Fidelity Managed Retirement 2030 Fund℠ Class K6
Trading Symbol	FMRFX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2030 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1-800-835-5092
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K6 $ 0.28 %
Expenses Paid, Amount	$ 30
Expense Ratio, Percent	0.28%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B885">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 16, 2019 through July 31, 2024. Initial investment of $10,000. Class K6   $10,000 $10,995   $13,165   $11,820   $12,284   $13,518   Fidelity Managed Retirement 2030 Composite Index℠   $10,000 $11,008   $12,899   $11,710   $12,137   $13,343   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,766   $10,690   $9,716   $9,389   $9,868     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class K6 10.04% 6.26% Fidelity Managed Retirement 2030 Composite Index℠ 9.94% 5.99% Bloomberg U.S. Aggregate Bond Index 5.10% -0.27% A   From August 16, 2019   Visit www.401k.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 16, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 42,605,634
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 175,975
Investment Company Portfolio Turnover	40%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 40 %
Holdings [Text Block]	Bond Funds 39.6 Domestic Equity Funds 24.8 International Equity Funds 24.0 Inflation-Protected Bond Funds 11.6 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Government Bond Index Fund 9.2     Fidelity Series Investment Grade Bond Fund 9.0     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 7.7     Fidelity Series Emerging Markets Opportunities Fund 6.8     Fidelity Series Large Cap Value Index Fund 6.7     Fidelity Series Corporate Bond Fund 5.9     Fidelity Series Investment Grade Securitized Fund 5.8     Fidelity Series Blue Chip Growth Fund 5.6     Fidelity Series Long-Term Treasury Bond Index Fund 4.3     Fidelity Series International Developed Markets Bond Index Fund 4.0       65.0
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com . Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-835-5092</span>" id="sjs-B899">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-835-5092&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B900">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B901">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Managed Retirement Income Fund - Class K
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement Income Fund℠
Class Name	Fidelity Managed Retirement Income Fund℠ Class K
Trading Symbol	FRKMX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement Income Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-835-5092
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K $ 0.35 %
Expenses Paid, Amount	$ 36
Expense Ratio, Percent	0.35%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B917">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 1, 2019 through July 31, 2024. Initial investment of $10,000. Class K   $10,000 $10,709   $11,522   $10,648   $10,698   $11,469   Fidelity Managed Retirement Income Composite Index℠   $10,000 $10,800   $11,459   $10,695   $10,766   $11,561   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,941   $10,864   $9,874   $9,541   $10,028     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class K 7.20% 2.78% Fidelity Managed Retirement Income Composite Index℠ 7.39% 2.94% Bloomberg U.S. Aggregate Bond Index 5.10% 0.06% A   From August 1, 2019   Visit www.401k.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 01, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 14,747,002
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 64,102
Investment Company Portfolio Turnover	33%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 33 %
Holdings [Text Block]	Bond Funds 51.2 Inflation-Protected Bond Funds 20.5 International Equity Funds 13.6 Domestic Equity Funds 9.3 Short-Term Funds 4.3 Short-Term Investments and Net Other Assets (Liabilities) 1.1 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 19.9     Fidelity Series Government Bond Index Fund 13.3     Fidelity Series Investment Grade Bond Fund 12.9     Fidelity Series Corporate Bond Fund 8.6     Fidelity Series Investment Grade Securitized Fund 8.4     Fidelity Series Emerging Markets Opportunities Fund 4.6     Fidelity Series International Developed Markets Bond Index Fund 3.9     Fidelity Series Treasury Bill Index Fund 3.2     Fidelity Series Long-Term Treasury Bond Index Fund 2.6     Fidelity Series Large Cap Value Index Fund 2.4       79.8
Fidelity Managed Retirement 2015 Fund
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2015 Fund℠
Class Name	Fidelity Managed Retirement 2015 Fund℠
Trading Symbol	FIRSX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2015 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-544-8544
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity Managed Retirement 2015 Fund℠ $ 0.46 %
Expenses Paid, Amount	$ 48
Expense Ratio, Percent	0.46%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B944">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000. Fidelity Managed Retirement 2015 Fund℠   $10,000 $10,560   $10,743   $11,786   $12,343   $12,899   $13,908   $15,661   $14,292   $14,505   $15,664   Fidelity Managed Retirement 2015 Composite Index℠   $10,000 $10,602   $10,999   $11,887   $12,527   $13,298   $14,448   $16,010   $14,787   $15,032   $16,259   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Fidelity Managed Retirement 2015 Fund℠ 7.99% 3.96% 4.59% Fidelity Managed Retirement 2015 Composite Index℠ 8.16% 4.10% 4.98% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 5,479,558
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 25,594
Investment Company Portfolio Turnover	34%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 34 %
Holdings [Text Block]	Bond Funds 48.3 Inflation-Protected Bond Funds 18.0 International Equity Funds 16.7 Domestic Equity Funds 13.9 Short-Term Funds 2.5 Short-Term Investments and Net Other Assets (Liabilities) 0.6 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 15.1     Fidelity Series Government Bond Index Fund 12.3     Fidelity Series Investment Grade Bond Fund 12.0     Fidelity Series Corporate Bond Fund 7.9     Fidelity Series Investment Grade Securitized Fund 7.8     Fidelity Series Emerging Markets Opportunities Fund 5.2     Fidelity Series International Developed Markets Bond Index Fund 4.0     Fidelity Series Large Cap Value Index Fund 3.7     Fidelity Series Blue Chip Growth Fund 3.0     Fidelity Series Long-Term Treasury Bond Index Fund 2.9       73.9
Fidelity Advisor Managed Retirement 2035 Fund - Class A
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2035 Fund℠
Class Name	Fidelity Advisor Managed Retirement 2035 Fund℠ Class A
Trading Symbol	FMRUX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2035 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-877-208-0098
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $ 0.73 %
Expenses Paid, Amount	$ 77
Expense Ratio, Percent	0.73%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B970">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE December 15, 2022 through July 31, 2024. Initial investment of $10,000 and the current sales charge was paid. Class A   $9,425 $10,165   $11,213   Fidelity Managed Retirement 2035 Composite Index   $10,000 $10,787   $11,909   S&P 500® Index   $10,000 $11,898   $14,533   Bloomberg U.S. Aggregate Bond Index   $10,000 $9,962   $10,470     2022 2023 2024 Effective February 2, 2024, the fund began comparing its performance to Bloomberg U.S. Aggregate Bond Index rather than S&P 500® Index because the Bloomberg U.S. Aggregate Bond Index conforms more closely to the fund's investment policies.
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class A (incl. 5.75% sales charge)   3.97% 7.29% Class A (without 5.75% sales charge) 10.31% 11.27% Fidelity Managed Retirement 2035 Composite Index 10.39% 11.33% S&P 500® Index 24.56% 26.43% Bloomberg U.S. Aggregate Bond Index 5.10% 2.86% A   From December 15, 2022   Effective February 2, 2024, the fund began comparing its performance to Bloomberg U.S. Aggregate Bond Index rather than S&P 500® Index because the Bloomberg U.S. Aggregate Bond Index conforms more closely to the fund's investment policies.   Visit institutional.fidelity.com for more recent performance information. The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Dec. 15, 2022
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 10,439,772
Holdings Count | shares	32
Advisory Fees Paid, Amount	$ 16,710
Investment Company Portfolio Turnover	60%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 32 Total Advisory Fee $ Portfolio Turnover 60 %
Holdings [Text Block]	Bond Funds 36.9 Domestic Equity Funds 27.5 International Equity Funds 25.8 Inflation-Protected Bond Funds 9.8 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 8.4     Fidelity Series Government Bond Index Fund 8.2     Fidelity Series Investment Grade Bond Fund 8.0     Fidelity Series Large Cap Value Index Fund 7.4     Fidelity Series Emerging Markets Opportunities Fund 7.3     Fidelity Series Blue Chip Growth Fund 6.2     Fidelity Series Corporate Bond Fund 5.3     Fidelity Series Investment Grade Securitized Fund 5.2     Fidelity Series Long-Term Treasury Bond Index Fund 4.8     Fidelity Series International Growth Fund 4.1       64.9
Fidelity Advisor Managed Retirement 2020 Fund - Class A
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2020 Fund℠
Class Name	Fidelity Advisor Managed Retirement 2020 Fund℠ Class A
Trading Symbol	FARVX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2020 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-877-208-0098
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $ 0.72 %
Expenses Paid, Amount	$ 75
Expense Ratio, Percent	0.72%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B997">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000 and the current sales charge was paid. Class A   $9,425 $9,951   $10,077   $11,104   $11,692   $12,162   $13,106   $15,092   $13,640   $13,918   $15,085   Fidelity Managed Retirement 2020 Composite Index℠   $10,000 $10,619   $11,003   $11,968   $12,723   $13,505   $14,696   $16,666   $15,291   $15,651   $17,029   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Class A (incl. 5.75% sales charge)   2.15% 3.17% 4.20% Class A (without 5.75% sales charge) 8.38% 4.40% 4.82% Fidelity Managed Retirement 2020 Composite Index℠ 8.80% 4.75% 5.47% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit institutional.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 8,371,922
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 38,515
Investment Company Portfolio Turnover	32%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 32 %
Holdings [Text Block]	Bond Funds 45.9 International Equity Funds 19.3 Domestic Equity Funds 17.9 Inflation-Protected Bond Funds 15.8 Short-Term Funds 0.9 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Government Bond Index Fund 11.5     Fidelity Series Investment Grade Bond Fund 11.2     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 11.1     Fidelity Series Corporate Bond Fund 7.5     Fidelity Series Investment Grade Securitized Fund 7.3     Fidelity Series Emerging Markets Opportunities Fund 5.9     Fidelity Series Large Cap Value Index Fund 4.8     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 4.7     Fidelity Series International Developed Markets Bond Index Fund 4.0     Fidelity Series Blue Chip Growth Fund 3.9       71.9
Fidelity Managed Retirement 2015 Fund - Class K6
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2015 Fund℠
Class Name	Fidelity Managed Retirement 2015 Fund℠ Class K6
Trading Symbol	FJRSX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2015 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1-800-835-5092
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K6 $ 0.26 %
Expenses Paid, Amount	$ 27
Expense Ratio, Percent	0.26%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B1024">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 1, 2019 through July 31, 2024. Initial investment of $10,000. Class K6   $10,000 $10,809   $12,195   $11,153   $11,343   $12,271   Fidelity Managed Retirement 2015 Composite Index℠   $10,000 $10,859   $12,034   $11,114   $11,298   $12,221   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,941   $10,864   $9,874   $9,541   $10,028     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class K6 8.18% 4.18% Fidelity Managed Retirement 2015 Composite Index℠ 8.16% 4.09% Bloomberg U.S. Aggregate Bond Index 5.10% 0.06% A   From August 1, 2019   Visit www.401k.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 01, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 5,479,558
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 25,594
Investment Company Portfolio Turnover	34%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 34 %
Holdings [Text Block]	Bond Funds 48.3 Inflation-Protected Bond Funds 18.0 International Equity Funds 16.7 Domestic Equity Funds 13.9 Short-Term Funds 2.5 Short-Term Investments and Net Other Assets (Liabilities) 0.6 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 15.1     Fidelity Series Government Bond Index Fund 12.3     Fidelity Series Investment Grade Bond Fund 12.0     Fidelity Series Corporate Bond Fund 7.9     Fidelity Series Investment Grade Securitized Fund 7.8     Fidelity Series Emerging Markets Opportunities Fund 5.2     Fidelity Series International Developed Markets Bond Index Fund 4.0     Fidelity Series Large Cap Value Index Fund 3.7     Fidelity Series Blue Chip Growth Fund 3.0     Fidelity Series Long-Term Treasury Bond Index Fund 2.9       73.9
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com . Effective May 24, 2024, Class Z6, a class of shares of the fund, was consolidated into Class K6 shares of the fund.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by September 28, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-835-5092</span>" id="sjs-B1038">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-835-5092&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B1039">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B1040">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Managed Retirement 2025 Fund
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2025 Fund℠
Class Name	Fidelity Managed Retirement 2025 Fund℠
Trading Symbol	FIXRX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2025 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-544-8544
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity Managed Retirement 2025 Fund℠ $ 0.47 %
Expenses Paid, Amount	$ 49
Expense Ratio, Percent	0.47%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B1056">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000. Fidelity Managed Retirement 2025 Fund℠   $10,000 $10,617   $10,753   $11,950   $12,668   $13,190   $14,284   $16,826   $15,138   $15,606   $17,070   Fidelity Managed Retirement 2025 Composite Index℠   $10,000 $10,641   $11,013   $12,048   $12,871   $13,663   $14,888   $17,204   $15,685   $16,166   $17,692   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Fidelity Managed Retirement 2025 Fund℠ 9.38% 5.29% 5.49% Fidelity Managed Retirement 2025 Composite Index℠ 9.44% 5.31% 5.87% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 50,060,844
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 222,391
Investment Company Portfolio Turnover	36%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 36 %
Holdings [Text Block]	Bond Funds 42.7 International Equity Funds 22.0 Domestic Equity Funds 21.8 Inflation-Protected Bond Funds 13.5 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series Government Bond Index Fund 10.4     Fidelity Series Investment Grade Bond Fund 10.1     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 7.0     Fidelity Series Corporate Bond Fund 6.7     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 6.5     Fidelity Series Investment Grade Securitized Fund 6.5     Fidelity Series Emerging Markets Opportunities Fund 6.5     Fidelity Series Large Cap Value Index Fund 5.9     Fidelity Series Blue Chip Growth Fund 4.9     Fidelity Series International Developed Markets Bond Index Fund 4.0       68.5
Fidelity Advisor Managed Retirement 2010 Fund - Class A
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2010 Fund℠
Class Name	Fidelity Advisor Managed Retirement 2010 Fund℠ Class A
Trading Symbol	FRQAX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2010 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-877-208-0098
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $ 0.70 %
Expenses Paid, Amount	$ 72
Expense Ratio, Percent	0.70%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B1082">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000 and the current sales charge was paid. Class A   $9,425 $9,897   $10,062   $10,918   $11,311   $11,817   $12,667   $13,865   $12,711   $12,768   $13,659   Fidelity Managed Retirement 2010 Composite Index℠   $10,000 $10,582   $10,986   $11,778   $12,300   $13,058   $14,159   $15,315   $14,237   $14,371   $15,452   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Class A (incl. 5.75% sales charge)   0.83% 1.73% 3.17% Class A (without 5.75% sales charge) 6.98% 2.94% 3.78% Fidelity Managed Retirement 2010 Composite Index℠ 7.52% 3.42% 4.45% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit institutional.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 5,472,463
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 25,116
Investment Company Portfolio Turnover	25%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 25 %
Holdings [Text Block]	Bond Funds 50.8 Inflation-Protected Bond Funds 20.1 International Equity Funds 14.1 Domestic Equity Funds 10.0 Short-Term Funds 4.0 Short-Term Investments and Net Other Assets (Liabilities) 1.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 19.2     Fidelity Series Government Bond Index Fund 13.1     Fidelity Series Investment Grade Bond Fund 12.8     Fidelity Series Corporate Bond Fund 8.5     Fidelity Series Investment Grade Securitized Fund 8.3     Fidelity Series Emerging Markets Opportunities Fund 4.7     Fidelity Series International Developed Markets Bond Index Fund 3.9     Fidelity Series Treasury Bill Index Fund 3.0     Fidelity Series Long-Term Treasury Bond Index Fund 2.7     Fidelity Series Large Cap Value Index Fund 2.6       78.8
Fidelity Managed Retirement 2015 Fund - Class K
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2015 Fund℠
Class Name	Fidelity Managed Retirement 2015 Fund℠ Class K
Trading Symbol	FKRSX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2015 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-835-5092
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K $ 0.36 %
Expenses Paid, Amount	$ 38
Expense Ratio, Percent	0.36%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B1108">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE August 1, 2019 through July 31, 2024. Initial investment of $10,000. Class K   $10,000 $10,798   $12,170   $11,119   $11,296   $12,209   Fidelity Managed Retirement 2015 Composite Index℠   $10,000 $10,859   $12,034   $11,114   $11,298   $12,221   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,941   $10,864   $9,874   $9,541   $10,028     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Class K 8.08% 4.07% Fidelity Managed Retirement 2015 Composite Index℠ 8.16% 4.09% Bloomberg U.S. Aggregate Bond Index 5.10% 0.06% A   From August 1, 2019   Visit www.401k.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Aug. 01, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 5,479,558
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 25,594
Investment Company Portfolio Turnover	34%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 34 %
Holdings [Text Block]	Bond Funds 48.3 Inflation-Protected Bond Funds 18.0 International Equity Funds 16.7 Domestic Equity Funds 13.9 Short-Term Funds 2.5 Short-Term Investments and Net Other Assets (Liabilities) 0.6 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 15.1     Fidelity Series Government Bond Index Fund 12.3     Fidelity Series Investment Grade Bond Fund 12.0     Fidelity Series Corporate Bond Fund 7.9     Fidelity Series Investment Grade Securitized Fund 7.8     Fidelity Series Emerging Markets Opportunities Fund 5.2     Fidelity Series International Developed Markets Bond Index Fund 4.0     Fidelity Series Large Cap Value Index Fund 3.7     Fidelity Series Blue Chip Growth Fund 3.0     Fidelity Series Long-Term Treasury Bond Index Fund 2.9       73.9
Fidelity Advisor Managed Retirement 2010 Fund - Class I
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2010 Fund℠
Class Name	Fidelity Advisor Managed Retirement 2010 Fund℠ Class I
Trading Symbol	FRQIX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2010 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-877-208-0098
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $ 0.45 %
Expenses Paid, Amount	$ 47
Expense Ratio, Percent	0.45%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B1135">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the past 10 years?      CUMULATIVE PERFORMANCE July 31, 2014 through July 31, 2024. Initial investment of $10,000. Class I   $10,000 $10,526   $10,730   $11,671   $12,122   $12,696   $13,645   $14,971   $13,761   $13,856   $14,861   Fidelity Managed Retirement 2010 Composite Index℠   $10,000 $10,582   $10,986   $11,778   $12,300   $13,058   $14,159   $15,315   $14,237   $14,371   $15,452   Bloomberg U.S. Aggregate Bond Index   $10,000 $10,282   $10,893   $10,837   $10,750   $11,619   $12,795   $12,705   $11,547   $11,158   $11,727     2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year 10 Year Class I 7.26% 3.20% 4.04% Fidelity Managed Retirement 2010 Composite Index℠ 7.52% 3.42% 4.45% Bloomberg U.S. Aggregate Bond Index 5.10% 0.19% 1.61%   Visit institutional.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 5,472,463
Holdings Count | shares	33
Advisory Fees Paid, Amount	$ 25,116
Investment Company Portfolio Turnover	25%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 33 Total Advisory Fee $ Portfolio Turnover 25 %
Holdings [Text Block]	Bond Funds 50.8 Inflation-Protected Bond Funds 20.1 International Equity Funds 14.1 Domestic Equity Funds 10.0 Short-Term Funds 4.0 Short-Term Investments and Net Other Assets (Liabilities) 1.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund 19.2     Fidelity Series Government Bond Index Fund 13.1     Fidelity Series Investment Grade Bond Fund 12.8     Fidelity Series Corporate Bond Fund 8.5     Fidelity Series Investment Grade Securitized Fund 8.3     Fidelity Series Emerging Markets Opportunities Fund 4.7     Fidelity Series International Developed Markets Bond Index Fund 3.9     Fidelity Series Treasury Bill Index Fund 3.0     Fidelity Series Long-Term Treasury Bond Index Fund 2.7     Fidelity Series Large Cap Value Index Fund 2.6       78.8
Fidelity Managed Retirement 2035 Fund
Shareholder Report [Line Items]
Fund Name	Fidelity Managed Retirement 2035 Fund℠
Class Name	Fidelity Managed Retirement 2035 Fund℠
Trading Symbol	FMRTX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity Managed Retirement 2035 Fund℠ for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number	1-800-544-8544
Additional Information Email	fidfunddocuments@fidelity.com
Additional Information Website	fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block]	What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity Managed Retirement 2035 Fund℠ $ 0.48 %
Expenses Paid, Amount	$ 51
Expense Ratio, Percent	0.48%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B1161">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE December 15, 2022 through July 31, 2024. Initial investment of $10,000. Fidelity Managed Retirement 2035 Fund℠   $10,000 $10,802   $11,937   Fidelity Managed Retirement 2035 Composite Index   $10,000 $10,787   $11,909   S&P 500® Index   $10,000 $11,898   $14,533   Bloomberg U.S. Aggregate Bond Index   $10,000 $9,962   $10,470     2022 2023 2024 Effective February 2, 2024, the fund began comparing its performance to Bloomberg U.S. Aggregate Bond Index rather than S&P 500® Index because the Bloomberg U.S. Aggregate Bond Index conforms more closely to the fund's investment policies.
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund A Fidelity Managed Retirement 2035 Fund℠ 10.50% 11.49% Fidelity Managed Retirement 2035 Composite Index 10.39% 11.33% S&P 500® Index 24.56% 26.43% Bloomberg U.S. Aggregate Bond Index 5.10% 2.86% A   From December 15, 2022   Effective February 2, 2024, the fund began comparing its performance to Bloomberg U.S. Aggregate Bond Index rather than S&P 500® Index because the Bloomberg U.S. Aggregate Bond Index conforms more closely to the fund's investment policies.   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Dec. 15, 2022
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 10,439,772
Holdings Count | shares	32
Advisory Fees Paid, Amount	$ 16,710
Investment Company Portfolio Turnover	60%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 32 Total Advisory Fee $ Portfolio Turnover 60 %
Holdings [Text Block]	Bond Funds 36.9 Domestic Equity Funds 27.5 International Equity Funds 25.8 Inflation-Protected Bond Funds 9.8 Short-Term Funds 0.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Fidelity Series 5+ Year Inflation-Protected Bond Index Fund 8.4     Fidelity Series Government Bond Index Fund 8.2     Fidelity Series Investment Grade Bond Fund 8.0     Fidelity Series Large Cap Value Index Fund 7.4     Fidelity Series Emerging Markets Opportunities Fund 7.3     Fidelity Series Blue Chip Growth Fund 6.2     Fidelity Series Corporate Bond Fund 5.3     Fidelity Series Investment Grade Securitized Fund 5.2     Fidelity Series Long-Term Treasury Bond Index Fund 4.8     Fidelity Series International Growth Fund 4.1       64.9

Shareholder Report, Line Graph

Shareholder Report, Line Graph (Details) - USD ($)

12 Months Ended

36 Months Ended

60 Months Ended

72 Months Ended

120 Months Ended

132 Months Ended

Jul. 31, 2024

Jul. 31, 2024

Jul. 31, 2024

Jul. 31, 2024

Jul. 31, 2024

Jul. 31, 2024

Jul. 31, 2023

Jul. 31, 2022

Jul. 31, 2021

Jul. 31, 2020

Jul. 31, 2019

Jul. 31, 2018

Jul. 31, 2017

Jul. 31, 2016

Jul. 31, 2015

Jul. 31, 2014

C000240062_0_LG_BBIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-C5">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000240062_0_BBIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

$ 10,000

C000240062_0_BBIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

$ 9,962

C000240062_0_BBIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,470

$ 10,470

$ 10,470

$ 10,470

$ 10,470

$ 10,470

C000240062_2_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000240062_2_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

2.86%

C000055916_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000055916_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000055916_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000019282_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000019282_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000019282_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000051095_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000051095_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000051095_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000213718_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000213718_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

(0.27%)

C000051071_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000051071_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000051071_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000212308_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000212308_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

0.06%

C000055918_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000055918_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000055918_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000055912_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000055912_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000055912_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000212306_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000212306_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

0.06%

C000212305_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000212305_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

0.06%

C000212310_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000212310_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

0.06%

C000055923_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000055923_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000055923_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000213723_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000213723_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

(0.27%)

C000213721_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000213721_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

(0.27%)

C000051091_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000051091_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000051091_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000051074_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000051074_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000051074_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000212309_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000212309_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

0.06%

C000055926_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000055926_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000055926_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000240060_0_LG_BBIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-C161">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000240060_0_BBIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240060_0_BBIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,962

C000240060_0_BBIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,470

$ 10,470

$ 10,470

10,470

$ 10,470

10,470

C000240060_2_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000240060_2_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

2.86%

C000051110_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000051110_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000051110_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000051090_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000051090_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000051090_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000051094_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000051094_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000051094_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000213722_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000213722_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

(0.27%)

C000240066_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

22.15%

C000240066_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

25.83%

C000213724_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

22.15%

C000213724_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

15.81%

C000212307_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000212307_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

0.06%

C000051115_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000051115_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000051115_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000051075_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000051075_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000051075_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000240064_0_LG_BBIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-C248">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000240064_0_BBIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240064_0_BBIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,962

C000240064_0_BBIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,470

$ 10,470

$ 10,470

10,470

$ 10,470

10,470

C000240064_2_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000240064_2_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

2.86%

C000212302_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000212302_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

0.06%

C000213720_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000213720_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

(0.27%)

C000212301_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000212301_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

0.06%

C000051070_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000051070_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000051070_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000240065_0_LG_BBIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-C293">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000240065_0_BBIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240065_0_BBIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,962

C000240065_0_BBIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,470

$ 10,470

$ 10,470

10,470

$ 10,470

10,470

C000240065_2_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000240065_2_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

2.86%

C000055913_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000055913_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000055913_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000212299_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000212299_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

0.06%

C000055922_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000055922_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000055922_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000051111_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000051111_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000051111_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000212300_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000212300_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

0.06%

C000051114_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000051114_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.19%

C000051114_1_BBIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.61%

C000240063_0_LG_BBIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-C359">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000240063_0_BBIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240063_0_BBIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,962

C000240063_0_BBIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,470

$ 10,470

$ 10,470

10,470

$ 10,470

10,470

C000240063_2_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.10%

C000240063_2_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

2.86%

C000240062_LG_ClassMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class K</span>" id="sjs-C377">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K&lt;/span>

C000240062_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240062_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,812

C000240062_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,956

$ 11,956

11,956

11,956

11,956

11,956

C000240062_LG_1_AdditionalIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2035 Composite Index</span>" id="sjs-C389">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2035 Composite Index&lt;/span>

C000240062_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240062_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,787

C000240062_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

11,909

$ 11,909

11,909

11,909

11,909

11,909

C000240062_LG_2_AdditionalIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

S&P 500® Index</span>" id="sjs-C401">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&amp;P 500® Index&lt;/span>

C000240062_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240062_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,898

C000240062_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 14,533

$ 14,533

14,533

14,533

14,533

$ 14,533

C000240062_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.58%

C000240062_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

11.60%

C000240062_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.39%

C000240062_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

11.33%

C000240062_1_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

24.56%

C000240062_1_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

26.43%

C000055916_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class I</span>" id="sjs-G431">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class I&lt;/span>

C000055916_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

$ 10,000

C000055916_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

$ 10,584

C000055916_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

$ 10,745

C000055916_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

$ 11,868

C000055916_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

$ 12,530

C000055916_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

$ 13,065

C000055916_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

$ 14,116

C000055916_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

$ 16,296

C000055916_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,764

C000055916_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

15,103

C000055916_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 16,410

16,410

16,410

16,410

16,410

$ 16,410

C000055916_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2020 Composite Index℠</span>" id="sjs-G467">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2020 Composite Index℠&lt;/span>

C000055916_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055916_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,619

C000055916_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

11,003

C000055916_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,968

C000055916_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,723

C000055916_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,505

C000055916_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,696

C000055916_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

16,666

C000055916_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

15,291

C000055916_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

15,651

C000055916_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

17,029

17,029

17,029

17,029

17,029

$ 17,029

C000055916_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G503">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000055916_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055916_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000055916_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000055916_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000055916_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000055916_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000055916_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000055916_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000055916_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000055916_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000055916_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

11,727

$ 11,727

$ 11,727

C000055916_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.65%

C000055916_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.67%

C000055916_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.08%

C000055916_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.80%

C000055916_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.75%

C000055916_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.47%

C000019282_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® GNMA Fund</span>" id="sjs-G557">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® GNMA Fund&lt;/span>

C000019282_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000019282_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,313

C000019282_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,649

C000019282_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,669

C000019282_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,593

C000019282_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,233

C000019282_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

11,762

C000019282_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

11,794

C000019282_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,064

C000019282_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,579

C000019282_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,126

11,126

$ 11,126

11,126

$ 11,126

$ 11,126

C000019282_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg GNMA Index</span>" id="sjs-G593">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg GNMA Index&lt;/span>

C000019282_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000019282_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,305

C000019282_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,678

C000019282_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,681

C000019282_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,644

C000019282_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,326

C000019282_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

11,868

C000019282_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

11,820

C000019282_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,155

C000019282_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,688

C000019282_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

11,187

11,187

11,187

11,187

11,187

$ 11,187

C000019282_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G629">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000019282_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000019282_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000019282_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000019282_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000019282_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000019282_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000019282_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000019282_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000019282_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000019282_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000019282_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

11,727

$ 11,727

$ 11,727

C000019282_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.17%

C000019282_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

(0.19%)

C000019282_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.07%

C000019282_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.67%

C000019282_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

(0.25%)

C000019282_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.13%

C000051095_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Simplicity RMD Income Fund℠</span>" id="sjs-G683">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Simplicity RMD Income Fund℠&lt;/span>

C000051095_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051095_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,433

C000051095_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,667

C000051095_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,335

C000051095_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

11,631

C000051095_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,217

C000051095_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

13,095

C000051095_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

14,177

C000051095_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

13,108

C000051095_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,217

C000051095_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 14,185

14,185

$ 14,185

14,185

$ 14,185

$ 14,185

C000051095_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Simplicity RMD Income Composite Index℠</span>" id="sjs-G719">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Simplicity RMD Income Composite Index℠&lt;/span>

C000051095_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051095_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,506

C000051095_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,897

C000051095_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,438

C000051095_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

11,791

C000051095_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,521

C000051095_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

13,555

C000051095_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

14,381

C000051095_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

13,423

C000051095_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,512

C000051095_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

14,510

14,510

14,510

14,510

14,510

$ 14,510

C000051095_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G755">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000051095_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051095_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000051095_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000051095_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000051095_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000051095_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000051095_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000051095_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000051095_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000051095_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000051095_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

$ 11,727

$ 11,727

$ 11,727

C000051095_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.32%

C000051095_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.03%

C000051095_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.56%

C000051095_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.39%

C000051095_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

2.99%

C000051095_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.79%

C000213718_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class K</span>" id="sjs-E809">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K&lt;/span>

C000213718_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213718_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,977

C000213718_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

13,138

C000213718_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,785

C000213718_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,235

C000213718_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 13,460

13,460

$ 13,460

$ 13,460

$ 13,460

13,460

C000213718_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2030 Composite Index℠</span>" id="sjs-E830">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2030 Composite Index℠&lt;/span>

C000213718_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213718_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

11,008

C000213718_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,899

C000213718_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,710

C000213718_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,137

C000213718_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

13,343

13,343

13,343

$ 13,343

13,343

13,343

C000213718_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-E851">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000213718_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213718_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,766

C000213718_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,690

C000213718_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,716

C000213718_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,389

C000213718_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 9,868

9,868

9,868

$ 9,868

9,868

$ 9,868

C000213718_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.01%

C000213718_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

6.17%

C000213718_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.94%

C000213718_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

5.99%

C000051071_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class A</span>" id="sjs-G884">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class A&lt;/span>

C000051071_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

9,425

C000051071_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

9,926

C000051071_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,072

C000051071_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,024

C000051071_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

11,516

C000051071_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,006

C000051071_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,912

C000051071_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

14,501

C000051071_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

13,202

C000051071_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,367

C000051071_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 14,397

14,397

14,397

14,397

14,397

$ 14,397

C000051071_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2015 Composite Index℠</span>" id="sjs-G920">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2015 Composite Index℠&lt;/span>

C000051071_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051071_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,602

C000051071_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,999

C000051071_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,887

C000051071_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,527

C000051071_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,298

C000051071_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,448

C000051071_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

16,010

C000051071_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,787

C000051071_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

15,032

C000051071_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

16,259

16,259

16,259

16,259

16,259

$ 16,259

C000051071_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G956">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000051071_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051071_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000051071_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000051071_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000051071_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000051071_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000051071_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000051071_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000051071_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000051071_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000051071_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

$ 11,727

$ 11,727

$ 11,727

C000051071_ClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.51%

C000051071_ClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

2.48%

C000051071_ClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.71%

C000051071_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.71%

C000051071_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.70%

C000051071_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.33%

C000051071_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.16%

C000051071_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.10%

C000051071_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.98%

C000212308_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class K</span>" id="sjs-E1019">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K&lt;/span>

C000212308_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212308_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,831

C000212308_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,514

C000212308_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,349

C000212308_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,622

C000212308_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 12,642

12,642

$ 12,642

$ 12,642

$ 12,642

12,642

C000212308_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2020 Composite Index℠</span>" id="sjs-E1040">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2020 Composite Index℠&lt;/span>

C000212308_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212308_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,886

C000212308_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,346

C000212308_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,327

C000212308_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,594

C000212308_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

12,615

12,615

12,615

$ 12,615

12,615

12,615

C000212308_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-E1061">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000212308_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212308_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,941

C000212308_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,864

C000212308_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,874

C000212308_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,541

C000212308_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,028

10,028

10,028

$ 10,028

10,028

$ 10,028

C000212308_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.78%

C000212308_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

4.80%

C000212308_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.80%

C000212308_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

4.75%

C000055918_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Simplicity RMD 2020 Fund℠</span>" id="sjs-G1094">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Simplicity RMD 2020 Fund℠&lt;/span>

C000055918_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055918_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,598

C000055918_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,748

C000055918_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,912

C000055918_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,629

C000055918_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,139

C000055918_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,174

C000055918_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

16,624

C000055918_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,857

C000055918_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

15,519

C000055918_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 17,134

17,134

17,134

17,134

17,134

$ 17,134

C000055918_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Simplicity RMD 2020 Composite Index℠</span>" id="sjs-G1130">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Simplicity RMD 2020 Composite Index℠&lt;/span>

C000055918_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055918_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,628

C000055918_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

11,005

C000055918_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

12,009

C000055918_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,829

C000055918_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,603

C000055918_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,791

C000055918_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

16,901

C000055918_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

15,293

C000055918_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

15,868

C000055918_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

17,461

17,461

17,461

17,461

17,461

$ 17,461

C000055918_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G1166">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000055918_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055918_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000055918_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000055918_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000055918_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000055918_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000055918_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000055918_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000055918_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000055918_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000055918_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

11,727

$ 11,727

$ 11,727

C000055918_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.41%

C000055918_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.45%

C000055918_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.53%

C000055918_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.04%

C000055918_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.12%

C000055918_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.73%

C000055912_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2020 Fund℠</span>" id="sjs-G1220">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2020 Fund℠&lt;/span>

C000055912_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055912_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,584

C000055912_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,745

C000055912_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,870

C000055912_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,529

C000055912_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,065

C000055912_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,116

C000055912_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

16,296

C000055912_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,764

C000055912_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

15,102

C000055912_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 16,412

16,412

$ 16,412

16,412

$ 16,412

$ 16,412

C000055912_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2020 Composite Index℠</span>" id="sjs-G1256">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2020 Composite Index℠&lt;/span>

C000055912_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055912_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,619

C000055912_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

11,003

C000055912_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,968

C000055912_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,723

C000055912_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,505

C000055912_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,696

C000055912_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

16,666

C000055912_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

15,291

C000055912_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

15,651

C000055912_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

17,029

17,029

17,029

17,029

17,029

$ 17,029

C000055912_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G1292">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000055912_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055912_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000055912_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000055912_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000055912_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000055912_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000055912_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000055912_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000055912_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000055912_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000055912_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

$ 11,727

$ 11,727

$ 11,727

C000055912_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.67%

C000055912_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.67%

C000055912_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.08%

C000055912_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.80%

C000055912_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.75%

C000055912_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.47%

C000212306_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class K</span>" id="sjs-E1346">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K&lt;/span>

C000212306_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212306_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,752

C000212306_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

11,809

C000212306_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,866

C000212306_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,953

C000212306_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,759

11,759

$ 11,759

$ 11,759

$ 11,759

11,759

C000212306_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2010 Composite Index℠</span>" id="sjs-E1367">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2010 Composite Index℠&lt;/span>

C000212306_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212306_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,829

C000212306_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

11,713

C000212306_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,888

C000212306_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,991

C000212306_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

11,818

11,818

11,818

$ 11,818

11,818

11,818

C000212306_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-E1388">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000212306_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212306_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,941

C000212306_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,864

C000212306_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,874

C000212306_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,541

C000212306_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,028

10,028

10,028

$ 10,028

10,028

10,028

C000212306_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.36%

C000212306_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

3.29%

C000212306_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.52%

C000212306_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

3.39%

C000212305_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class K6</span>" id="sjs-E1421">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K6&lt;/span>

C000212305_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212305_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,764

C000212305_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

11,833

C000212305_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,899

C000212305_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,997

C000212305_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,818

11,818

11,818

$ 11,818

11,818

11,818

C000212305_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2010 Composite Index℠</span>" id="sjs-E1442">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2010 Composite Index℠&lt;/span>

C000212305_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212305_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,829

C000212305_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

11,713

C000212305_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,888

C000212305_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,991

C000212305_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

11,818

11,818

11,818

$ 11,818

11,818

11,818

C000212305_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-E1463">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000212305_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212305_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,941

C000212305_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,864

C000212305_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,874

C000212305_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,541

C000212305_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,028

10,028

10,028

$ 10,028

10,028

10,028

C000212305_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.47%

C000212305_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

3.39%

C000212305_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.52%

C000212305_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

3.39%

C000212310_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class K</span>" id="sjs-E1496">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K&lt;/span>

C000212310_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212310_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,863

C000212310_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,808

C000212310_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,534

C000212310_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,904

C000212310_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 13,033

13,033

13,033

$ 13,033

13,033

13,033

C000212310_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2025 Composite Index℠</span>" id="sjs-E1517">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2025 Composite Index℠&lt;/span>

C000212310_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212310_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,908

C000212310_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,605

C000212310_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,491

C000212310_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,844

C000212310_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

12,962

12,962

12,962

$ 12,962

12,962

12,962

C000212310_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-E1538">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000212310_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212310_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,941

C000212310_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,864

C000212310_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,874

C000212310_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,541

C000212310_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,028

10,028

10,028

$ 10,028

10,028

$ 10,028

C000212310_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.49%

C000212310_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

5.44%

C000212310_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.44%

C000212310_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

5.32%

C000055923_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class A</span>" id="sjs-G1571">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class A&lt;/span>

C000055923_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

9,425

C000055923_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

9,982

C000055923_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,085

C000055923_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,179

C000055923_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

11,822

C000055923_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,279

C000055923_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

13,263

C000055923_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

15,583

C000055923_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

13,987

C000055923_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

14,384

C000055923_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 15,692

15,692

15,692

15,692

15,692

$ 15,692

C000055923_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2025 Composite Index℠</span>" id="sjs-G1607">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2025 Composite Index℠&lt;/span>

C000055923_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055923_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,641

C000055923_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

11,013

C000055923_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

12,048

C000055923_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,871

C000055923_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,663

C000055923_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,888

C000055923_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

17,204

C000055923_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

15,685

C000055923_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

16,166

C000055923_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

17,692

17,692

17,692

17,692

17,692

$ 17,692

C000055923_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G1643">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000055923_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055923_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000055923_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000055923_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000055923_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000055923_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000055923_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000055923_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000055923_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000055923_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000055923_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

$ 11,727

$ 11,727

$ 11,727

C000055923_ClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

2.82%

C000055923_ClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.79%

C000055923_ClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.61%

C000055923_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.09%

C000055923_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.03%

C000055923_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.23%

C000055923_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.44%

C000055923_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.31%

C000055923_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.87%

C000213723_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class I</span>" id="sjs-E1706">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class I&lt;/span>

C000213723_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213723_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,967

C000213723_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

13,119

C000213723_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,746

C000213723_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,181

C000213723_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 13,386

13,386

$ 13,386

$ 13,386

$ 13,386

13,386

C000213723_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2030 Composite Index℠</span>" id="sjs-E1727">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2030 Composite Index℠&lt;/span>

C000213723_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213723_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

11,008

C000213723_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,899

C000213723_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,710

C000213723_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,137

C000213723_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

13,343

13,343

13,343

$ 13,343

13,343

13,343

C000213723_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-E1748">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000213723_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213723_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,766

C000213723_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,690

C000213723_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,716

C000213723_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,389

C000213723_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 9,868

9,868

9,868

$ 9,868

9,868

9,868

C000213723_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.89%

C000213723_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

6.05%

C000213723_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.94%

C000213723_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

5.99%

C000213721_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class A</span>" id="sjs-E1781">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class A&lt;/span>

C000213721_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

9,425

C000213721_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,316

C000213721_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,305

C000213721_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,994

C000213721_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,374

C000213721_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 12,464

12,464

12,464

$ 12,464

12,464

12,464

C000213721_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2030 Composite Index℠</span>" id="sjs-E1802">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2030 Composite Index℠&lt;/span>

C000213721_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213721_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

11,008

C000213721_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,899

C000213721_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,710

C000213721_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,137

C000213721_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

13,343

13,343

13,343

$ 13,343

13,343

13,343

C000213721_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-E1823">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000213721_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213721_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,766

C000213721_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,690

C000213721_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,716

C000213721_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,389

C000213721_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 9,868

9,868

9,868

$ 9,868

9,868

$ 9,868

C000213721_ClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.29%

C000213721_ClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

4.54%

C000213721_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.59%

C000213721_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

5.80%

C000213721_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.94%

C000213721_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

5.99%

C000051091_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class A</span>" id="sjs-G1862">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class A&lt;/span>

C000051091_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

9,425

C000051091_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

9,754

C000051091_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

9,962

C000051091_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,433

C000051091_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,679

C000051091_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,189

C000051091_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

11,957

C000051091_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,819

C000051091_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,807

C000051091_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,823

C000051091_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 12,629

12,629

12,629

12,629

12,629

$ 12,629

C000051091_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement Income Composite Index℠</span>" id="sjs-G1898">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement Income Composite Index℠&lt;/span>

C000051091_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051091_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,453

C000051091_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,823

C000051091_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,247

C000051091_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

11,594

C000051091_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,312

C000051091_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

13,328

C000051091_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

14,141

C000051091_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

13,199

C000051091_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,286

C000051091_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

14,268

14,268

14,268

14,268

14,268

$ 14,268

C000051091_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G1934">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000051091_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051091_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000051091_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000051091_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000051091_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000051091_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000051091_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000051091_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000051091_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000051091_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000051091_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

11,727

$ 11,727

$ 11,727

C000051091_ClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.67%

C000051091_ClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.24%

C000051091_ClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

2.36%

C000051091_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

6.82%

C000051091_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

2.45%

C000051091_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

2.97%

C000051091_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.39%

C000051091_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

2.99%

C000051091_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.62%

C000051074_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class I</span>" id="sjs-G1997">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class I&lt;/span>

C000051074_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051074_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,558

C000051074_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,741

C000051074_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,786

C000051074_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,343

C000051074_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,899

C000051074_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

13,907

C000051074_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

15,657

C000051074_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,292

C000051074_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

14,504

C000051074_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 15,660

15,660

$ 15,660

15,660

$ 15,660

$ 15,660

C000051074_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2015 Composite Index℠</span>" id="sjs-G2033">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2015 Composite Index℠&lt;/span>

C000051074_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051074_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,602

C000051074_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,999

C000051074_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,887

C000051074_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,527

C000051074_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,298

C000051074_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,448

C000051074_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

16,010

C000051074_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,787

C000051074_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

15,032

C000051074_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

16,259

16,259

16,259

16,259

16,259

$ 16,259

C000051074_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G2069">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000051074_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051074_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000051074_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000051074_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000051074_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000051074_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000051074_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000051074_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000051074_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000051074_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000051074_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

$ 11,727

$ 11,727

$ 11,727

C000051074_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.97%

C000051074_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.96%

C000051074_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.59%

C000051074_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.16%

C000051074_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.10%

C000051074_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.98%

C000212309_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class K6</span>" id="sjs-E2123">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K6&lt;/span>

C000212309_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212309_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,873

C000212309_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,833

C000212309_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,568

C000212309_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,950

C000212309_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 13,096

13,096

$ 13,096

$ 13,096

$ 13,096

13,096

C000212309_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2025 Composite Index℠</span>" id="sjs-E2144">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2025 Composite Index℠&lt;/span>

C000212309_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212309_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,908

C000212309_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,605

C000212309_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,491

C000212309_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,844

C000212309_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

12,962

12,962

12,962

$ 12,962

12,962

12,962

C000212309_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-E2165">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000212309_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212309_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,941

C000212309_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,864

C000212309_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,874

C000212309_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,541

C000212309_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,028

10,028

10,028

$ 10,028

10,028

$ 10,028

C000212309_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.59%

C000212309_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

5.54%

C000212309_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.44%

C000212309_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

5.32%

C000055926_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class I</span>" id="sjs-G2198">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class I&lt;/span>

C000055926_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055926_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,617

C000055926_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,751

C000055926_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,949

C000055926_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,669

C000055926_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,192

C000055926_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,286

C000055926_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

16,826

C000055926_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

15,140

C000055926_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

15,609

C000055926_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 17,071

17,071

17,071

17,071

17,071

$ 17,071

C000055926_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2025 Composite Index℠</span>" id="sjs-G2234">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2025 Composite Index℠&lt;/span>

C000055926_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055926_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,641

C000055926_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

11,013

C000055926_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

12,048

C000055926_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,871

C000055926_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,663

C000055926_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,888

C000055926_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

17,204

C000055926_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

15,685

C000055926_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

16,166

C000055926_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

17,692

17,692

17,692

17,692

17,692

$ 17,692

C000055926_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G2270">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000055926_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055926_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000055926_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000055926_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000055926_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000055926_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000055926_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000055926_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000055926_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000055926_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000055926_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

$ 11,727

$ 11,727

11,727

$ 11,727

$ 11,727

C000055926_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.36%

C000055926_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.29%

C000055926_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.49%

C000055926_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.44%

C000055926_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.31%

C000055926_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.87%

C000240060_LG_ClassMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class K6</span>" id="sjs-C2324">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K6&lt;/span>

C000240060_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240060_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,819

C000240060_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,980

$ 11,980

$ 11,980

11,980

$ 11,980

11,980

C000240060_LG_1_AdditionalIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2035 Composite Index</span>" id="sjs-C2336">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2035 Composite Index&lt;/span>

C000240060_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240060_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,787

C000240060_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

11,909

$ 11,909

11,909

11,909

11,909

11,909

C000240060_LG_2_AdditionalIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

S&P 500® Index</span>" id="sjs-C2348">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&amp;P 500® Index&lt;/span>

C000240060_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240060_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,898

C000240060_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 14,533

$ 14,533

14,533

14,533

14,533

$ 14,533

C000240060_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.73%

C000240060_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

11.74%

C000240060_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.39%

C000240060_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

11.33%

C000240060_1_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

24.56%

C000240060_1_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

26.43%

C000051110_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2010 Fund℠</span>" id="sjs-G2378">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2010 Fund℠&lt;/span>

C000051110_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051110_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,527

C000051110_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,730

C000051110_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,671

C000051110_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,123

C000051110_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,696

C000051110_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

13,643

C000051110_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

14,970

C000051110_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

13,761

C000051110_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,856

C000051110_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 14,860

14,860

14,860

14,860

14,860

$ 14,860

C000051110_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2010 Composite Index℠</span>" id="sjs-G2414">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2010 Composite Index℠&lt;/span>

C000051110_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051110_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,582

C000051110_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,986

C000051110_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,778

C000051110_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,300

C000051110_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,058

C000051110_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,159

C000051110_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

15,315

C000051110_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,237

C000051110_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

14,371

C000051110_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

15,452

15,452

15,452

15,452

15,452

$ 15,452

C000051110_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G2450">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000051110_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051110_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000051110_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000051110_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000051110_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000051110_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000051110_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000051110_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000051110_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000051110_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000051110_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

11,727

$ 11,727

$ 11,727

C000051110_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.25%

C000051110_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.20%

C000051110_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.04%

C000051110_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.52%

C000051110_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.42%

C000051110_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.45%

C000051090_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement Income Fund℠</span>" id="sjs-G2504">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement Income Fund℠&lt;/span>

C000051090_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051090_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,376

C000051090_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,622

C000051090_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,151

C000051090_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

11,445

C000051090_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,021

C000051090_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,878

C000051090_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

13,841

C000051090_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

12,779

C000051090_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,826

C000051090_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 13,738

13,738

$ 13,738

13,738

$ 13,738

$ 13,738

C000051090_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement Income Composite Index℠</span>" id="sjs-G2540">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement Income Composite Index℠&lt;/span>

C000051090_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051090_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,453

C000051090_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,823

C000051090_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,247

C000051090_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

11,594

C000051090_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,312

C000051090_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

13,328

C000051090_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

14,141

C000051090_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

13,199

C000051090_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,286

C000051090_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

14,268

14,268

14,268

14,268

14,268

$ 14,268

C000051090_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G2576">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000051090_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051090_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000051090_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000051090_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000051090_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000051090_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000051090_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000051090_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000051090_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000051090_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000051090_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

11,727

$ 11,727

$ 11,727

C000051090_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.11%

C000051090_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

2.70%

C000051090_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.23%

C000051090_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.39%

C000051090_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

2.99%

C000051090_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.62%

C000051094_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class I</span>" id="sjs-G2630">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class I&lt;/span>

C000051094_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051094_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,376

C000051094_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,622

C000051094_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,153

C000051094_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

11,445

C000051094_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,022

C000051094_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,880

C000051094_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

13,843

C000051094_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

12,782

C000051094_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,830

C000051094_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 13,739

13,739

$ 13,739

13,739

$ 13,739

$ 13,739

C000051094_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement Income Composite Index℠</span>" id="sjs-G2666">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement Income Composite Index℠&lt;/span>

C000051094_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051094_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,453

C000051094_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,823

C000051094_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,247

C000051094_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

11,594

C000051094_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,312

C000051094_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

13,328

C000051094_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

14,141

C000051094_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

13,199

C000051094_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,286

C000051094_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

14,268

14,268

14,268

14,268

14,268

$ 14,268

C000051094_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G2702">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000051094_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051094_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000051094_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000051094_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000051094_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000051094_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000051094_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000051094_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000051094_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000051094_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000051094_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

$ 11,727

$ 11,727

$ 11,727

C000051094_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.09%

C000051094_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

2.71%

C000051094_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.23%

C000051094_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.39%

C000051094_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

2.99%

C000051094_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.62%

C000213722_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2030 Fund℠</span>" id="sjs-E2756">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2030 Fund℠&lt;/span>

C000213722_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213722_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,966

C000213722_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

13,111

C000213722_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,749

C000213722_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,185

C000213722_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 13,392

13,392

$ 13,392

$ 13,392

$ 13,392

13,392

C000213722_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2030 Composite Index℠</span>" id="sjs-E2777">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2030 Composite Index℠&lt;/span>

C000213722_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213722_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

11,008

C000213722_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,899

C000213722_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,710

C000213722_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,137

C000213722_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

13,343

13,343

13,343

$ 13,343

13,343

13,343

C000213722_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-E2798">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000213722_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213722_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,766

C000213722_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,690

C000213722_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,716

C000213722_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,389

C000213722_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 9,868

$ 9,868

9,868

$ 9,868

9,868

9,868

C000213722_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.91%

C000213722_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

6.06%

C000213722_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.94%

C000213722_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

5.99%

C000240066_LG_ClassMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Simplicity RMD 2030 Fund℠</span>" id="sjs-C2831">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Simplicity RMD 2030 Fund℠&lt;/span>

C000240066_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240066_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,013

C000240066_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 12,368

$ 12,368

12,368

12,368

12,368

12,368

C000240066_LG_1_AdditionalIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Simplicity RMD 2030 Composite Index℠</span>" id="sjs-C2843">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Simplicity RMD 2030 Composite Index℠&lt;/span>

C000240066_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240066_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,965

C000240066_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

12,247

$ 12,247

12,247

12,247

12,247

12,247

C000240066_LG_2_AdditionalIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

S&P 500® Index</span>" id="sjs-C2855">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&amp;P 500® Index&lt;/span>

C000240066_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240066_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,898

C000240066_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 14,533

$ 14,533

14,533

$ 14,533

14,533

14,533

C000240066_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

12.31%

C000240066_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

13.95%

C000240066_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

11.69%

C000240066_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

13.26%

C000213724_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Simplicity RMD 2025 Fund℠</span>" id="sjs-E2879">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Simplicity RMD 2025 Fund℠&lt;/span>

C000213724_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213724_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,945

C000213724_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

13,157

C000213724_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,709

C000213724_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,368

C000213724_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 13,761

13,761

13,761

$ 13,761

13,761

13,761

C000213724_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Simplicity RMD 2025 Composite Index℠</span>" id="sjs-E2900">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Simplicity RMD 2025 Composite Index℠&lt;/span>

C000213724_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213724_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,986

C000213724_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,847

C000213724_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,582

C000213724_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,142

C000213724_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

13,460

13,460

13,460

$ 13,460

13,460

13,460

C000213724_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

S&P 500® Index</span>" id="sjs-E2921">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&amp;P 500® Index&lt;/span>

C000213724_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213724_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

11,533

C000213724_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

15,736

C000213724_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

15,006

C000213724_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

16,959

C000213724_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 20,715

20,715

20,715

$ 20,715

20,715

20,715

C000213724_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

11.26%

C000213724_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

6.65%

C000213724_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.86%

C000213724_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

6.17%

C000212307_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class K6</span>" id="sjs-E2954">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K6&lt;/span>

C000212307_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212307_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,842

C000212307_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,539

C000212307_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,384

C000212307_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,669

C000212307_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 12,705

12,705

12,705

$ 12,705

12,705

12,705

C000212307_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2020 Composite Index℠</span>" id="sjs-E2975">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2020 Composite Index℠&lt;/span>

C000212307_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212307_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,886

C000212307_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,346

C000212307_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,327

C000212307_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,594

C000212307_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

12,615

12,615

12,615

$ 12,615

12,615

12,615

C000212307_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-E2996">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000212307_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212307_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,941

C000212307_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,864

C000212307_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,874

C000212307_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,541

C000212307_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,028

10,028

10,028

$ 10,028

10,028

$ 10,028

C000212307_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.88%

C000212307_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

4.90%

C000212307_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.80%

C000212307_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

4.75%

C000051115_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Simplicity RMD 2010 Fund℠</span>" id="sjs-G3029">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Simplicity RMD 2010 Fund℠&lt;/span>

C000051115_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051115_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,548

C000051115_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,740

C000051115_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,728

C000051115_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,194

C000051115_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,763

C000051115_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

13,712

C000051115_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

15,178

C000051115_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

13,847

C000051115_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

14,147

C000051115_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 15,330

15,330

15,330

15,330

15,330

$ 15,330

C000051115_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Simplicity RMD 2010 Composite Index℠</span>" id="sjs-G3065">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Simplicity RMD 2010 Composite Index℠&lt;/span>

C000051115_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051115_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,594

C000051115_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,995

C000051115_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,829

C000051115_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,369

C000051115_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,129

C000051115_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,234

C000051115_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

15,417

C000051115_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,209

C000051115_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

14,465

C000051115_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

15,658

15,658

15,658

15,658

15,658

$ 15,658

C000051115_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G3101">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000051115_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051115_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000051115_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000051115_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000051115_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000051115_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000051115_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000051115_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000051115_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000051115_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000051115_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

11,727

$ 11,727

$ 11,727

C000051115_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.36%

C000051115_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.73%

C000051115_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.37%

C000051115_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.24%

C000051115_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.59%

C000051115_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.59%

C000051075_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Simplicity RMD 2015 Fund℠</span>" id="sjs-G3155">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Simplicity RMD 2015 Fund℠&lt;/span>

C000051075_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051075_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,570

C000051075_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,741

C000051075_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,823

C000051075_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,414

C000051075_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,955

C000051075_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

13,953

C000051075_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

15,895

C000051075_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,354

C000051075_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

14,831

C000051075_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 16,227

16,227

$ 16,227

16,227

$ 16,227

$ 16,227

C000051075_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Simplicity RMD 2015 Composite Index℠</span>" id="sjs-G3191">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Simplicity RMD 2015 Composite Index℠&lt;/span>

C000051075_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051075_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,610

C000051075_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,999

C000051075_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,923

C000051075_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,601

C000051075_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,370

C000051075_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,520

C000051075_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

16,153

C000051075_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,753

C000051075_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

15,163

C000051075_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

16,550

16,550

16,550

16,550

16,550

$ 16,550

C000051075_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G3227">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000051075_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051075_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000051075_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000051075_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000051075_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000051075_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000051075_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000051075_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000051075_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000051075_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000051075_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

$ 11,727

$ 11,727

11,727

$ 11,727

$ 11,727

C000051075_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.41%

C000051075_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.61%

C000051075_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.96%

C000051075_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.15%

C000051075_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.36%

C000051075_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.17%

C000240064_LG_ClassMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class I</span>" id="sjs-C3281">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class I&lt;/span>

C000240064_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240064_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,807

C000240064_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,947

$ 11,947

$ 11,947

11,947

$ 11,947

11,947

C000240064_LG_1_AdditionalIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2035 Composite Index</span>" id="sjs-C3293">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2035 Composite Index&lt;/span>

C000240064_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240064_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,787

C000240064_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

11,909

$ 11,909

11,909

11,909

11,909

11,909

C000240064_LG_2_AdditionalIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

S&P 500® Index</span>" id="sjs-C3305">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&amp;P 500® Index&lt;/span>

C000240064_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240064_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,898

C000240064_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 14,533

$ 14,533

14,533

$ 14,533

14,533

14,533

C000240064_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.54%

C000240064_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

11.55%

C000240064_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.39%

C000240064_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

11.33%

C000240064_1_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

24.56%

C000240064_1_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

26.43%

C000212302_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class K6</span>" id="sjs-E3335">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K6&lt;/span>

C000212302_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212302_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,720

C000212302_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

11,544

C000212302_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,680

C000212302_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,741

C000212302_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,526

11,526

11,526

$ 11,526

11,526

11,526

C000212302_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement Income Composite Index℠</span>" id="sjs-E3356">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement Income Composite Index℠&lt;/span>

C000212302_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212302_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,800

C000212302_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

11,459

C000212302_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,695

C000212302_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,766

C000212302_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

11,561

11,561

11,561

$ 11,561

11,561

11,561

C000212302_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-E3377">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000212302_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212302_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,941

C000212302_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,864

C000212302_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,874

C000212302_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,541

C000212302_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,028

10,028

10,028

$ 10,028

10,028

10,028

C000212302_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.31%

C000212302_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

2.88%

C000212302_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.39%

C000212302_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

2.94%

C000213720_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class K6</span>" id="sjs-E3410">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K6&lt;/span>

C000213720_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213720_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,995

C000213720_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

13,165

C000213720_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,820

C000213720_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,284

C000213720_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 13,518

13,518

13,518

$ 13,518

13,518

13,518

C000213720_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2030 Composite Index℠</span>" id="sjs-E3431">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2030 Composite Index℠&lt;/span>

C000213720_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213720_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

11,008

C000213720_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,899

C000213720_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,710

C000213720_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,137

C000213720_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

13,343

13,343

13,343

$ 13,343

13,343

13,343

C000213720_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-E3452">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000213720_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000213720_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,766

C000213720_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,690

C000213720_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,716

C000213720_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,389

C000213720_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 9,868

9,868

9,868

$ 9,868

9,868

9,868

C000213720_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.04%

C000213720_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

6.26%

C000213720_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.94%

C000213720_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

5.99%

C000212301_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class K</span>" id="sjs-E3485">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K&lt;/span>

C000212301_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212301_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,709

C000212301_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

11,522

C000212301_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,648

C000212301_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,698

C000212301_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,469

11,469

11,469

$ 11,469

11,469

11,469

C000212301_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement Income Composite Index℠</span>" id="sjs-E3506">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement Income Composite Index℠&lt;/span>

C000212301_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212301_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,800

C000212301_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

11,459

C000212301_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,695

C000212301_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,766

C000212301_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

11,561

11,561

11,561

$ 11,561

11,561

11,561

C000212301_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-E3527">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000212301_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212301_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,941

C000212301_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,864

C000212301_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,874

C000212301_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,541

C000212301_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,028

10,028

10,028

$ 10,028

10,028

$ 10,028

C000212301_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.20%

C000212301_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

2.78%

C000212301_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.39%

C000212301_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

2.94%

C000051070_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2015 Fund℠</span>" id="sjs-G3560">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2015 Fund℠&lt;/span>

C000051070_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051070_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,560

C000051070_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,743

C000051070_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,786

C000051070_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,343

C000051070_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,899

C000051070_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

13,908

C000051070_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

15,661

C000051070_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,292

C000051070_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

14,505

C000051070_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 15,664

15,664

15,664

15,664

15,664

$ 15,664

C000051070_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2015 Composite Index℠</span>" id="sjs-G3596">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2015 Composite Index℠&lt;/span>

C000051070_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051070_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,602

C000051070_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,999

C000051070_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,887

C000051070_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,527

C000051070_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,298

C000051070_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,448

C000051070_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

16,010

C000051070_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,787

C000051070_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

15,032

C000051070_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

16,259

16,259

16,259

16,259

16,259

$ 16,259

C000051070_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G3632">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000051070_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051070_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000051070_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000051070_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000051070_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000051070_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000051070_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000051070_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000051070_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000051070_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000051070_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

$ 11,727

$ 11,727

11,727

$ 11,727

$ 11,727

C000051070_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.99%

C000051070_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.96%

C000051070_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.59%

C000051070_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.16%

C000051070_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.10%

C000051070_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.98%

C000240065_LG_ClassMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class A</span>" id="sjs-C3686">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class A&lt;/span>

C000240065_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,425

C000240065_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,165

C000240065_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,213

$ 11,213

$ 11,213

11,213

$ 11,213

11,213

C000240065_LG_1_AdditionalIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2035 Composite Index</span>" id="sjs-C3698">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2035 Composite Index&lt;/span>

C000240065_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240065_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,787

C000240065_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

11,909

$ 11,909

11,909

11,909

11,909

11,909

C000240065_LG_2_AdditionalIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

S&P 500® Index</span>" id="sjs-C3710">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&amp;P 500® Index&lt;/span>

C000240065_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240065_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,898

C000240065_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 14,533

$ 14,533

14,533

14,533

14,533

$ 14,533

C000240065_ClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.97%

C000240065_ClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

7.29%

C000240065_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.31%

C000240065_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

11.27%

C000240065_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.39%

C000240065_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

11.33%

C000240065_1_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

24.56%

C000240065_1_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

26.43%

C000055913_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class A</span>" id="sjs-G3746">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class A&lt;/span>

C000055913_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

9,425

C000055913_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

9,951

C000055913_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,077

C000055913_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,104

C000055913_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

11,692

C000055913_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,162

C000055913_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

13,106

C000055913_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

15,092

C000055913_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

13,640

C000055913_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,918

C000055913_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 15,085

15,085

15,085

15,085

15,085

$ 15,085

C000055913_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2020 Composite Index℠</span>" id="sjs-G3782">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2020 Composite Index℠&lt;/span>

C000055913_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055913_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,619

C000055913_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

11,003

C000055913_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,968

C000055913_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,723

C000055913_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,505

C000055913_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,696

C000055913_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

16,666

C000055913_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

15,291

C000055913_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

15,651

C000055913_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

17,029

17,029

17,029

17,029

17,029

$ 17,029

C000055913_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G3818">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000055913_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055913_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000055913_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000055913_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000055913_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000055913_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000055913_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000055913_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000055913_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000055913_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000055913_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

$ 11,727

$ 11,727

$ 11,727

C000055913_ClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

2.15%

C000055913_ClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.17%

C000055913_ClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.20%

C000055913_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.38%

C000055913_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.40%

C000055913_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.82%

C000055913_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.80%

C000055913_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.75%

C000055913_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.47%

C000212299_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class K6</span>" id="sjs-E3881">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K6&lt;/span>

C000212299_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212299_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,809

C000212299_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,195

C000212299_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,153

C000212299_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,343

C000212299_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 12,271

12,271

$ 12,271

$ 12,271

$ 12,271

12,271

C000212299_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2015 Composite Index℠</span>" id="sjs-E3902">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2015 Composite Index℠&lt;/span>

C000212299_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212299_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,859

C000212299_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,034

C000212299_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,114

C000212299_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,298

C000212299_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

12,221

12,221

12,221

$ 12,221

12,221

12,221

C000212299_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-E3923">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000212299_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212299_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,941

C000212299_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,864

C000212299_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,874

C000212299_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,541

C000212299_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,028

10,028

10,028

$ 10,028

10,028

$ 10,028

C000212299_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.18%

C000212299_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

4.18%

C000212299_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.16%

C000212299_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

4.09%

C000055922_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2025 Fund℠</span>" id="sjs-G3956">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2025 Fund℠&lt;/span>

C000055922_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055922_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,617

C000055922_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,753

C000055922_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,950

C000055922_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,668

C000055922_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,190

C000055922_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,284

C000055922_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

16,826

C000055922_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

15,138

C000055922_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

15,606

C000055922_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 17,070

17,070

17,070

17,070

17,070

$ 17,070

C000055922_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2025 Composite Index℠</span>" id="sjs-G3992">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2025 Composite Index℠&lt;/span>

C000055922_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055922_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,641

C000055922_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

11,013

C000055922_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

12,048

C000055922_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,871

C000055922_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,663

C000055922_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,888

C000055922_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

17,204

C000055922_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

15,685

C000055922_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

16,166

C000055922_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

17,692

17,692

17,692

17,692

17,692

$ 17,692

C000055922_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G4028">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000055922_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000055922_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000055922_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000055922_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000055922_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000055922_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000055922_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000055922_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000055922_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000055922_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000055922_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

11,727

$ 11,727

$ 11,727

C000055922_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.38%

C000055922_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.29%

C000055922_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.49%

C000055922_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.44%

C000055922_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.31%

C000055922_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

5.87%

C000051111_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class A</span>" id="sjs-G4082">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class A&lt;/span>

C000051111_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

9,425

C000051111_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

9,897

C000051111_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,062

C000051111_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,918

C000051111_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

11,311

C000051111_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,817

C000051111_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,667

C000051111_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

13,865

C000051111_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

12,711

C000051111_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,768

C000051111_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 13,659

13,659

$ 13,659

13,659

$ 13,659

$ 13,659

C000051111_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2010 Composite Index℠</span>" id="sjs-G4118">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2010 Composite Index℠&lt;/span>

C000051111_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051111_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,582

C000051111_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,986

C000051111_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,778

C000051111_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,300

C000051111_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,058

C000051111_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,159

C000051111_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

15,315

C000051111_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,237

C000051111_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

14,371

C000051111_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

15,452

15,452

15,452

15,452

15,452

$ 15,452

C000051111_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G4154">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000051111_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051111_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,282

C000051111_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,893

C000051111_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,837

C000051111_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

10,750

C000051111_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

11,619

C000051111_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,795

C000051111_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,705

C000051111_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000051111_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000051111_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

11,727

$ 11,727

$ 11,727

$ 11,727

$ 11,727

C000051111_ClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

0.83%

C000051111_ClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

1.73%

C000051111_ClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.17%

C000051111_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

6.98%

C000051111_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

2.94%

C000051111_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.78%

C000051111_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.52%

C000051111_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.42%

C000051111_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.45%

C000212300_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class K</span>" id="sjs-E4217">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K&lt;/span>

C000212300_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212300_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,798

C000212300_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,170

C000212300_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,119

C000212300_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,296

C000212300_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 12,209

12,209

$ 12,209

$ 12,209

$ 12,209

12,209

C000212300_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2015 Composite Index℠</span>" id="sjs-E4238">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2015 Composite Index℠&lt;/span>

C000212300_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212300_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,859

C000212300_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,034

C000212300_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,114

C000212300_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,298

C000212300_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

12,221

12,221

12,221

$ 12,221

12,221

12,221

C000212300_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-E4259">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000212300_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000212300_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,941

C000212300_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,864

C000212300_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

9,874

C000212300_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,541

C000212300_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,028

10,028

10,028

$ 10,028

10,028

$ 10,028

C000212300_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.08%

C000212300_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

4.07%

C000212300_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

8.16%

C000212300_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

4.09%

C000051114_LG_ClassMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Class I</span>" id="sjs-G4292">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class I&lt;/span>

C000051114_ClassMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051114_ClassMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,526

C000051114_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,730

C000051114_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,671

C000051114_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,122

C000051114_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

12,696

C000051114_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

13,645

C000051114_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

14,971

C000051114_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

13,761

C000051114_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,856

C000051114_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 14,861

14,861

14,861

14,861

14,861

$ 14,861

C000051114_LG_1_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2010 Composite Index℠</span>" id="sjs-G4328">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2010 Composite Index℠&lt;/span>

C000051114_1_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

10,000

C000051114_1_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

10,582

C000051114_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,986

C000051114_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,778

C000051114_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,300

C000051114_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,058

C000051114_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,159

C000051114_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

15,315

C000051114_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,237

C000051114_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

14,371

C000051114_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

15,452

15,452

15,452

15,452

15,452

$ 15,452

C000051114_LG_2_AdditionalIndexMember_11YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Bond Index</span>" id="sjs-G4364">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg U.S. Aggregate Bond Index&lt;/span>

C000051114_2_AdditionalIndexMember_AsOf_2014Member

Account Value [Line Items]

Account Value

$ 10,000

C000051114_2_AdditionalIndexMember_AsOf_2015Member

Account Value [Line Items]

Account Value

$ 10,282

C000051114_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

$ 10,893

C000051114_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

$ 10,837

C000051114_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

$ 10,750

C000051114_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

$ 11,619

C000051114_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

$ 12,795

C000051114_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

$ 12,705

C000051114_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,547

C000051114_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,158

C000051114_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,727

$ 11,727

$ 11,727

11,727

$ 11,727

$ 11,727

C000051114_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.26%

C000051114_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.20%

C000051114_NoLoadClassMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.04%

C000051114_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

7.52%

C000051114_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

3.42%

C000051114_0_AdditionalIndexMember_10YRMember

Account Value [Line Items]

Average Annual Return, Percent

4.45%

C000240063_LG_ClassMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2035 Fund℠</span>" id="sjs-C4418">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2035 Fund℠&lt;/span>

C000240063_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240063_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,802

C000240063_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,937

$ 11,937

$ 11,937

11,937

$ 11,937

11,937

C000240063_LG_1_AdditionalIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Managed Retirement 2035 Composite Index</span>" id="sjs-C4430">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Managed Retirement 2035 Composite Index&lt;/span>

C000240063_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,000

C000240063_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,787

C000240063_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

11,909

$ 11,909

11,909

11,909

11,909

11,909

C000240063_LG_2_AdditionalIndexMember_3YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

S&P 500® Index</span>" id="sjs-C4442">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&amp;P 500® Index&lt;/span>

C000240063_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

$ 10,000

C000240063_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

$ 11,898

C000240063_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 14,533

$ 14,533

$ 14,533

$ 14,533

$ 14,533

$ 14,533

C000240063_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.50%

C000240063_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

11.49%

C000240063_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.39%

C000240063_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

11.33%

C000240063_1_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

24.56%

C000240063_1_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

26.43%

Shareholder Report, Holdings (D

Shareholder Report, Holdings (Details)	Jul. 31, 2024
Fidelity Managed Retirement 2035 Fund - Class K | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Managed Retirement 2035 Fund - Class K | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Fidelity Managed Retirement 2035 Fund - Class K | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	8%
Fidelity Managed Retirement 2035 Fund - Class K | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Fidelity Managed Retirement 2035 Fund - Class K | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Fidelity Managed Retirement 2035 Fund - Class K | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	6.20%
Fidelity Managed Retirement 2035 Fund - Class K | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Fidelity Managed Retirement 2035 Fund - Class K | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Fidelity Managed Retirement 2035 Fund - Class K | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Fidelity Managed Retirement 2035 Fund - Class K | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4.10%
Fidelity Managed Retirement 2035 Fund - Class K | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	36.90%
Fidelity Managed Retirement 2035 Fund - Class K | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	27.50%
Fidelity Managed Retirement 2035 Fund - Class K | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	25.80%
Fidelity Managed Retirement 2035 Fund - Class K | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	9.80%
Fidelity Managed Retirement 2035 Fund - Class K | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Managed Retirement 2035 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	11.50%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	11.20%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	11.10%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.50%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	45.90%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	17.90%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	19.30%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	15.80%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0.90%
Fidelity Advisor Managed Retirement 2020 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity GNMA Fund | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	67%
Fidelity GNMA Fund | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	28.30%
Fidelity GNMA Fund | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	7%
Fidelity GNMA Fund | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	6.90%
Fidelity GNMA Fund | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity GNMA Fund | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Fidelity GNMA Fund | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity GNMA Fund | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity GNMA Fund | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	1.70%
Fidelity GNMA Fund | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	1.40%
Fidelity GNMA Fund | CD0Member
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity GNMA Fund | CD1Member
Holdings [Line Items]
Percent of Net Asset Value	1.60%
Fidelity GNMA Fund | CD2Member
Holdings [Line Items]
Percent of Net Asset Value	43.60%
Fidelity GNMA Fund | CD3Member
Holdings [Line Items]
Percent of Net Asset Value	36%
Fidelity GNMA Fund | CD4Member
Holdings [Line Items]
Percent of Net Asset Value	19.10%
Fidelity GNMA Fund | CD5Member
Holdings [Line Items]
Percent of Net Asset Value	12.20%
Fidelity GNMA Fund | CD6Member
Holdings [Line Items]
Percent of Net Asset Value	10.60%
Fidelity GNMA Fund | CD7Member
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity GNMA Fund | CD8Member
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity GNMA Fund | CD9Member
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity GNMA Fund | AAUSGovernmentAgencyMortgageSecuritiesMember
Holdings [Line Items]
Percent of Net Asset Value	101.40%
Fidelity GNMA Fund | AACMOsandOtherMortgageRelatedSecuritiesMember
Holdings [Line Items]
Percent of Net Asset Value	13.30%
Fidelity GNMA Fund | AAUSTreasuryObligationsMember
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Simplicity RMD Income Fund | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	43.10%
Fidelity Simplicity RMD Income Fund | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	19.90%
Fidelity Simplicity RMD Income Fund | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	4.50%
Fidelity Simplicity RMD Income Fund | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Simplicity RMD Income Fund | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Fidelity Simplicity RMD Income Fund | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity Simplicity RMD Income Fund | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	1.90%
Fidelity Simplicity RMD Income Fund | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	1.90%
Fidelity Simplicity RMD Income Fund | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	1.70%
Fidelity Simplicity RMD Income Fund | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	1.50%
Fidelity Simplicity RMD Income Fund | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	51.20%
Fidelity Simplicity RMD Income Fund | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	9.30%
Fidelity Simplicity RMD Income Fund | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.60%
Fidelity Simplicity RMD Income Fund | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	20.50%
Fidelity Simplicity RMD Income Fund | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	1.10%
Fidelity Simplicity RMD Income Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Managed Retirement 2030 Fund - Class K | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	9.20%
Fidelity Managed Retirement 2030 Fund - Class K | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	9%
Fidelity Managed Retirement 2030 Fund - Class K | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	7.70%
Fidelity Managed Retirement 2030 Fund - Class K | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	6.80%
Fidelity Managed Retirement 2030 Fund - Class K | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	6.70%
Fidelity Managed Retirement 2030 Fund - Class K | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Managed Retirement 2030 Fund - Class K | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Fidelity Managed Retirement 2030 Fund - Class K | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.60%
Fidelity Managed Retirement 2030 Fund - Class K | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Managed Retirement 2030 Fund - Class K | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Managed Retirement 2030 Fund - Class K | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	39.60%
Fidelity Managed Retirement 2030 Fund - Class K | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	24.80%
Fidelity Managed Retirement 2030 Fund - Class K | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	24%
Fidelity Managed Retirement 2030 Fund - Class K | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	11.60%
Fidelity Managed Retirement 2030 Fund - Class K | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Managed Retirement 2030 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	15.10%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	12.30%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	12%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.90%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	7.80%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	3%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	48.30%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.90%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	16.70%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	18%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity Advisor Managed Retirement 2015 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.60%
Fidelity Managed Retirement 2020 Fund - Class K | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	11.50%
Fidelity Managed Retirement 2020 Fund - Class K | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	11.20%
Fidelity Managed Retirement 2020 Fund - Class K | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	11.10%
Fidelity Managed Retirement 2020 Fund - Class K | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.50%
Fidelity Managed Retirement 2020 Fund - Class K | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Fidelity Managed Retirement 2020 Fund - Class K | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Managed Retirement 2020 Fund - Class K | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Fidelity Managed Retirement 2020 Fund - Class K | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Fidelity Managed Retirement 2020 Fund - Class K | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Managed Retirement 2020 Fund - Class K | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Managed Retirement 2020 Fund - Class K | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	45.90%
Fidelity Managed Retirement 2020 Fund - Class K | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	17.90%
Fidelity Managed Retirement 2020 Fund - Class K | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	19.30%
Fidelity Managed Retirement 2020 Fund - Class K | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	15.80%
Fidelity Managed Retirement 2020 Fund - Class K | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0.90%
Fidelity Managed Retirement 2020 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Simplicity RMD 2020 Fund | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	27.90%
Fidelity Simplicity RMD 2020 Fund | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Simplicity RMD 2020 Fund | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	7%
Fidelity Simplicity RMD 2020 Fund | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	5.10%
Fidelity Simplicity RMD 2020 Fund | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Fidelity Simplicity RMD 2020 Fund | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Simplicity RMD 2020 Fund | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Simplicity RMD 2020 Fund | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	4.20%
Fidelity Simplicity RMD 2020 Fund | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.20%
Fidelity Simplicity RMD 2020 Fund | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Simplicity RMD 2020 Fund | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	38.40%
Fidelity Simplicity RMD 2020 Fund | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	25.50%
Fidelity Simplicity RMD 2020 Fund | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	24.40%
Fidelity Simplicity RMD 2020 Fund | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	11.70%
Fidelity Simplicity RMD 2020 Fund | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Simplicity RMD 2020 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Managed Retirement 2020 Fund | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	11.50%
Fidelity Managed Retirement 2020 Fund | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	11.20%
Fidelity Managed Retirement 2020 Fund | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	11.10%
Fidelity Managed Retirement 2020 Fund | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.50%
Fidelity Managed Retirement 2020 Fund | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Fidelity Managed Retirement 2020 Fund | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Managed Retirement 2020 Fund | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Fidelity Managed Retirement 2020 Fund | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Fidelity Managed Retirement 2020 Fund | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Managed Retirement 2020 Fund | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Managed Retirement 2020 Fund | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	45.90%
Fidelity Managed Retirement 2020 Fund | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	17.90%
Fidelity Managed Retirement 2020 Fund | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	19.30%
Fidelity Managed Retirement 2020 Fund | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	15.80%
Fidelity Managed Retirement 2020 Fund | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0.90%
Fidelity Managed Retirement 2020 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Managed Retirement 2010 Fund - Class K | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	19.20%
Fidelity Managed Retirement 2010 Fund - Class K | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	13.10%
Fidelity Managed Retirement 2010 Fund - Class K | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	12.80%
Fidelity Managed Retirement 2010 Fund - Class K | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	8.50%
Fidelity Managed Retirement 2010 Fund - Class K | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	8.30%
Fidelity Managed Retirement 2010 Fund - Class K | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Fidelity Managed Retirement 2010 Fund - Class K | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Managed Retirement 2010 Fund - Class K | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3%
Fidelity Managed Retirement 2010 Fund - Class K | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Fidelity Managed Retirement 2010 Fund - Class K | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Managed Retirement 2010 Fund - Class K | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	50.80%
Fidelity Managed Retirement 2010 Fund - Class K | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	10%
Fidelity Managed Retirement 2010 Fund - Class K | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Fidelity Managed Retirement 2010 Fund - Class K | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	20.10%
Fidelity Managed Retirement 2010 Fund - Class K | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Managed Retirement 2010 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	1%
Fidelity Managed Retirement 2010 Fund - Class K6 | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	19.20%
Fidelity Managed Retirement 2010 Fund - Class K6 | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	13.10%
Fidelity Managed Retirement 2010 Fund - Class K6 | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	12.80%
Fidelity Managed Retirement 2010 Fund - Class K6 | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	8.50%
Fidelity Managed Retirement 2010 Fund - Class K6 | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	8.30%
Fidelity Managed Retirement 2010 Fund - Class K6 | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Fidelity Managed Retirement 2010 Fund - Class K6 | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Managed Retirement 2010 Fund - Class K6 | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3%
Fidelity Managed Retirement 2010 Fund - Class K6 | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Fidelity Managed Retirement 2010 Fund - Class K6 | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Managed Retirement 2010 Fund - Class K6 | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	50.80%
Fidelity Managed Retirement 2010 Fund - Class K6 | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	10%
Fidelity Managed Retirement 2010 Fund - Class K6 | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Fidelity Managed Retirement 2010 Fund - Class K6 | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	20.10%
Fidelity Managed Retirement 2010 Fund - Class K6 | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Managed Retirement 2010 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	1%
Fidelity Managed Retirement 2025 Fund - Class K | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Fidelity Managed Retirement 2025 Fund - Class K | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	10.10%
Fidelity Managed Retirement 2025 Fund - Class K | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	7%
Fidelity Managed Retirement 2025 Fund - Class K | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	6.70%
Fidelity Managed Retirement 2025 Fund - Class K | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Managed Retirement 2025 Fund - Class K | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Managed Retirement 2025 Fund - Class K | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Managed Retirement 2025 Fund - Class K | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Managed Retirement 2025 Fund - Class K | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.90%
Fidelity Managed Retirement 2025 Fund - Class K | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Managed Retirement 2025 Fund - Class K | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	42.70%
Fidelity Managed Retirement 2025 Fund - Class K | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	21.80%
Fidelity Managed Retirement 2025 Fund - Class K | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	22%
Fidelity Managed Retirement 2025 Fund - Class K | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.50%
Fidelity Managed Retirement 2025 Fund - Class K | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Managed Retirement 2025 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	10.10%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	7%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	6.70%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.90%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	42.70%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	21.80%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	22%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.50%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Advisor Managed Retirement 2025 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	9.20%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	9%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	7.70%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	6.80%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	6.70%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.60%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	39.60%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	24.80%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	24%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	11.60%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Advisor Managed Retirement 2030 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	9.20%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	9%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	7.70%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	6.80%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	6.70%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.60%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	39.60%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	24.80%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	24%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	11.60%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Advisor Managed Retirement 2030 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Advisor Managed Retirement Income Fund - Class A | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	19.90%
Fidelity Advisor Managed Retirement Income Fund - Class A | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	13.30%
Fidelity Advisor Managed Retirement Income Fund - Class A | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	12.90%
Fidelity Advisor Managed Retirement Income Fund - Class A | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	8.60%
Fidelity Advisor Managed Retirement Income Fund - Class A | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Advisor Managed Retirement Income Fund - Class A | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	4.60%
Fidelity Advisor Managed Retirement Income Fund - Class A | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Advisor Managed Retirement Income Fund - Class A | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Fidelity Advisor Managed Retirement Income Fund - Class A | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Advisor Managed Retirement Income Fund - Class A | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Fidelity Advisor Managed Retirement Income Fund - Class A | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	51.20%
Fidelity Advisor Managed Retirement Income Fund - Class A | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	9.30%
Fidelity Advisor Managed Retirement Income Fund - Class A | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.60%
Fidelity Advisor Managed Retirement Income Fund - Class A | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	20.50%
Fidelity Advisor Managed Retirement Income Fund - Class A | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Advisor Managed Retirement Income Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	1.10%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	15.10%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	12.30%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	12%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.90%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	7.80%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	3%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	48.30%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.90%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	16.70%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	18%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity Advisor Managed Retirement 2015 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.60%
Fidelity Managed Retirement 2025 Fund - Class K6 | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Fidelity Managed Retirement 2025 Fund - Class K6 | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	10.10%
Fidelity Managed Retirement 2025 Fund - Class K6 | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	7%
Fidelity Managed Retirement 2025 Fund - Class K6 | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	6.70%
Fidelity Managed Retirement 2025 Fund - Class K6 | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Managed Retirement 2025 Fund - Class K6 | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Managed Retirement 2025 Fund - Class K6 | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Managed Retirement 2025 Fund - Class K6 | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Managed Retirement 2025 Fund - Class K6 | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.90%
Fidelity Managed Retirement 2025 Fund - Class K6 | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Managed Retirement 2025 Fund - Class K6 | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	42.70%
Fidelity Managed Retirement 2025 Fund - Class K6 | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	21.80%
Fidelity Managed Retirement 2025 Fund - Class K6 | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	22%
Fidelity Managed Retirement 2025 Fund - Class K6 | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.50%
Fidelity Managed Retirement 2025 Fund - Class K6 | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Managed Retirement 2025 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	10.10%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	7%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	6.70%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.90%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	42.70%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	21.80%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	22%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.50%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Advisor Managed Retirement 2025 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Managed Retirement 2035 Fund - Class K6 | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Managed Retirement 2035 Fund - Class K6 | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Fidelity Managed Retirement 2035 Fund - Class K6 | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	8%
Fidelity Managed Retirement 2035 Fund - Class K6 | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Fidelity Managed Retirement 2035 Fund - Class K6 | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Fidelity Managed Retirement 2035 Fund - Class K6 | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	6.20%
Fidelity Managed Retirement 2035 Fund - Class K6 | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Fidelity Managed Retirement 2035 Fund - Class K6 | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Fidelity Managed Retirement 2035 Fund - Class K6 | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Fidelity Managed Retirement 2035 Fund - Class K6 | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4.10%
Fidelity Managed Retirement 2035 Fund - Class K6 | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	36.90%
Fidelity Managed Retirement 2035 Fund - Class K6 | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	27.50%
Fidelity Managed Retirement 2035 Fund - Class K6 | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	25.80%
Fidelity Managed Retirement 2035 Fund - Class K6 | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	9.80%
Fidelity Managed Retirement 2035 Fund - Class K6 | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Managed Retirement 2035 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Managed Retirement 2010 Fund | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	19.20%
Fidelity Managed Retirement 2010 Fund | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	13.10%
Fidelity Managed Retirement 2010 Fund | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	12.80%
Fidelity Managed Retirement 2010 Fund | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	8.50%
Fidelity Managed Retirement 2010 Fund | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	8.30%
Fidelity Managed Retirement 2010 Fund | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Fidelity Managed Retirement 2010 Fund | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Managed Retirement 2010 Fund | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3%
Fidelity Managed Retirement 2010 Fund | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Fidelity Managed Retirement 2010 Fund | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Managed Retirement 2010 Fund | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	50.80%
Fidelity Managed Retirement 2010 Fund | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	10%
Fidelity Managed Retirement 2010 Fund | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Fidelity Managed Retirement 2010 Fund | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	20.10%
Fidelity Managed Retirement 2010 Fund | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Managed Retirement 2010 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	1%
Fidelity Managed Retirement Income Fund | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	19.90%
Fidelity Managed Retirement Income Fund | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	13.30%
Fidelity Managed Retirement Income Fund | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	12.90%
Fidelity Managed Retirement Income Fund | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	8.60%
Fidelity Managed Retirement Income Fund | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Managed Retirement Income Fund | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	4.60%
Fidelity Managed Retirement Income Fund | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Managed Retirement Income Fund | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Fidelity Managed Retirement Income Fund | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Managed Retirement Income Fund | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Fidelity Managed Retirement Income Fund | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	51.20%
Fidelity Managed Retirement Income Fund | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	9.30%
Fidelity Managed Retirement Income Fund | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.60%
Fidelity Managed Retirement Income Fund | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	20.50%
Fidelity Managed Retirement Income Fund | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Managed Retirement Income Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	1.10%
Fidelity Advisor Managed Retirement Income Fund - Class I | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	19.90%
Fidelity Advisor Managed Retirement Income Fund - Class I | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	13.30%
Fidelity Advisor Managed Retirement Income Fund - Class I | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	12.90%
Fidelity Advisor Managed Retirement Income Fund - Class I | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	8.60%
Fidelity Advisor Managed Retirement Income Fund - Class I | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Advisor Managed Retirement Income Fund - Class I | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	4.60%
Fidelity Advisor Managed Retirement Income Fund - Class I | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Advisor Managed Retirement Income Fund - Class I | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Fidelity Advisor Managed Retirement Income Fund - Class I | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Advisor Managed Retirement Income Fund - Class I | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Fidelity Advisor Managed Retirement Income Fund - Class I | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	51.20%
Fidelity Advisor Managed Retirement Income Fund - Class I | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	9.30%
Fidelity Advisor Managed Retirement Income Fund - Class I | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.60%
Fidelity Advisor Managed Retirement Income Fund - Class I | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	20.50%
Fidelity Advisor Managed Retirement Income Fund - Class I | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Advisor Managed Retirement Income Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	1.10%
Fidelity Managed Retirement 2030 Fund | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	9.20%
Fidelity Managed Retirement 2030 Fund | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	9%
Fidelity Managed Retirement 2030 Fund | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	7.70%
Fidelity Managed Retirement 2030 Fund | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	6.80%
Fidelity Managed Retirement 2030 Fund | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	6.70%
Fidelity Managed Retirement 2030 Fund | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Managed Retirement 2030 Fund | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Fidelity Managed Retirement 2030 Fund | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.60%
Fidelity Managed Retirement 2030 Fund | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Managed Retirement 2030 Fund | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Managed Retirement 2030 Fund | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	39.60%
Fidelity Managed Retirement 2030 Fund | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	24.80%
Fidelity Managed Retirement 2030 Fund | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	24%
Fidelity Managed Retirement 2030 Fund | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	11.60%
Fidelity Managed Retirement 2030 Fund | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Managed Retirement 2030 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Simplicity RMD 2030 Fund | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	18.70%
Fidelity Simplicity RMD 2030 Fund | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	8.30%
Fidelity Simplicity RMD 2030 Fund | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	6.90%
Fidelity Simplicity RMD 2030 Fund | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	6.20%
Fidelity Simplicity RMD 2030 Fund | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Fidelity Simplicity RMD 2030 Fund | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.50%
Fidelity Simplicity RMD 2030 Fund | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	5.40%
Fidelity Simplicity RMD 2030 Fund | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.40%
Fidelity Simplicity RMD 2030 Fund | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	5.10%
Fidelity Simplicity RMD 2030 Fund | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Simplicity RMD 2030 Fund | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	30.90%
Fidelity Simplicity RMD 2030 Fund | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	34%
Fidelity Simplicity RMD 2030 Fund | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	30.10%
Fidelity Simplicity RMD 2030 Fund | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	5.10%
Fidelity Simplicity RMD 2025 Fund | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	21.60%
Fidelity Simplicity RMD 2025 Fund | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	9.30%
Fidelity Simplicity RMD 2025 Fund | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	7.60%
Fidelity Simplicity RMD 2025 Fund | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Simplicity RMD 2025 Fund | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	5.50%
Fidelity Simplicity RMD 2025 Fund | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Fidelity Simplicity RMD 2025 Fund | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	4.90%
Fidelity Simplicity RMD 2025 Fund | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	4.90%
Fidelity Simplicity RMD 2025 Fund | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.90%
Fidelity Simplicity RMD 2025 Fund | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Simplicity RMD 2025 Fund | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	33.40%
Fidelity Simplicity RMD 2025 Fund | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	30%
Fidelity Simplicity RMD 2025 Fund | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	27.40%
Fidelity Simplicity RMD 2025 Fund | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	9.30%
Fidelity Managed Retirement 2020 Fund - Class K6 | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	11.50%
Fidelity Managed Retirement 2020 Fund - Class K6 | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	11.20%
Fidelity Managed Retirement 2020 Fund - Class K6 | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	11.10%
Fidelity Managed Retirement 2020 Fund - Class K6 | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.50%
Fidelity Managed Retirement 2020 Fund - Class K6 | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Fidelity Managed Retirement 2020 Fund - Class K6 | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Managed Retirement 2020 Fund - Class K6 | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Fidelity Managed Retirement 2020 Fund - Class K6 | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Fidelity Managed Retirement 2020 Fund - Class K6 | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Managed Retirement 2020 Fund - Class K6 | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Managed Retirement 2020 Fund - Class K6 | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	45.90%
Fidelity Managed Retirement 2020 Fund - Class K6 | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	17.90%
Fidelity Managed Retirement 2020 Fund - Class K6 | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	19.30%
Fidelity Managed Retirement 2020 Fund - Class K6 | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	15.80%
Fidelity Managed Retirement 2020 Fund - Class K6 | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0.90%
Fidelity Managed Retirement 2020 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Simplicity RMD 2010 Fund | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	39.70%
Fidelity Simplicity RMD 2010 Fund | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	14.50%
Fidelity Simplicity RMD 2010 Fund | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Fidelity Simplicity RMD 2010 Fund | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Simplicity RMD 2010 Fund | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Fidelity Simplicity RMD 2010 Fund | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Fidelity Simplicity RMD 2010 Fund | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Fidelity Simplicity RMD 2010 Fund | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Fidelity Simplicity RMD 2010 Fund | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Fidelity Simplicity RMD 2010 Fund | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity Simplicity RMD 2010 Fund | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	48%
Fidelity Simplicity RMD 2010 Fund | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	14.40%
Fidelity Simplicity RMD 2010 Fund | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	17%
Fidelity Simplicity RMD 2010 Fund | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	17.60%
Fidelity Simplicity RMD 2010 Fund | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0.60%
Fidelity Simplicity RMD 2010 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Fidelity Simplicity RMD 2015 Fund | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	36.10%
Fidelity Simplicity RMD 2015 Fund | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	8.90%
Fidelity Simplicity RMD 2015 Fund | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	6.10%
Fidelity Simplicity RMD 2015 Fund | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	5.70%
Fidelity Simplicity RMD 2015 Fund | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Simplicity RMD 2015 Fund | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	3.60%
Fidelity Simplicity RMD 2015 Fund | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	3.50%
Fidelity Simplicity RMD 2015 Fund | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3.50%
Fidelity Simplicity RMD 2015 Fund | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Fidelity Simplicity RMD 2015 Fund | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Fidelity Simplicity RMD 2015 Fund | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	44.60%
Fidelity Simplicity RMD 2015 Fund | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	20%
Fidelity Simplicity RMD 2015 Fund | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	20.70%
Fidelity Simplicity RMD 2015 Fund | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	14.60%
Fidelity Simplicity RMD 2015 Fund | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Simplicity RMD 2015 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.10%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	8%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	6.20%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4.10%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	36.90%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	27.50%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	25.80%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	9.80%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Advisor Managed Retirement 2035 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Managed Retirement Income Fund - Class K6 | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	19.90%
Fidelity Managed Retirement Income Fund - Class K6 | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	13.30%
Fidelity Managed Retirement Income Fund - Class K6 | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	12.90%
Fidelity Managed Retirement Income Fund - Class K6 | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	8.60%
Fidelity Managed Retirement Income Fund - Class K6 | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Managed Retirement Income Fund - Class K6 | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	4.60%
Fidelity Managed Retirement Income Fund - Class K6 | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Managed Retirement Income Fund - Class K6 | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Fidelity Managed Retirement Income Fund - Class K6 | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Managed Retirement Income Fund - Class K6 | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Fidelity Managed Retirement Income Fund - Class K6 | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	51.20%
Fidelity Managed Retirement Income Fund - Class K6 | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	9.30%
Fidelity Managed Retirement Income Fund - Class K6 | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.60%
Fidelity Managed Retirement Income Fund - Class K6 | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	20.50%
Fidelity Managed Retirement Income Fund - Class K6 | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Managed Retirement Income Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	1.10%
Fidelity Managed Retirement 2030 Fund - Class K6 | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	9.20%
Fidelity Managed Retirement 2030 Fund - Class K6 | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	9%
Fidelity Managed Retirement 2030 Fund - Class K6 | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	7.70%
Fidelity Managed Retirement 2030 Fund - Class K6 | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	6.80%
Fidelity Managed Retirement 2030 Fund - Class K6 | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	6.70%
Fidelity Managed Retirement 2030 Fund - Class K6 | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Managed Retirement 2030 Fund - Class K6 | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Fidelity Managed Retirement 2030 Fund - Class K6 | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.60%
Fidelity Managed Retirement 2030 Fund - Class K6 | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Managed Retirement 2030 Fund - Class K6 | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Managed Retirement 2030 Fund - Class K6 | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	39.60%
Fidelity Managed Retirement 2030 Fund - Class K6 | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	24.80%
Fidelity Managed Retirement 2030 Fund - Class K6 | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	24%
Fidelity Managed Retirement 2030 Fund - Class K6 | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	11.60%
Fidelity Managed Retirement 2030 Fund - Class K6 | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Managed Retirement 2030 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Managed Retirement Income Fund - Class K | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	19.90%
Fidelity Managed Retirement Income Fund - Class K | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	13.30%
Fidelity Managed Retirement Income Fund - Class K | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	12.90%
Fidelity Managed Retirement Income Fund - Class K | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	8.60%
Fidelity Managed Retirement Income Fund - Class K | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Managed Retirement Income Fund - Class K | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	4.60%
Fidelity Managed Retirement Income Fund - Class K | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Managed Retirement Income Fund - Class K | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Fidelity Managed Retirement Income Fund - Class K | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Managed Retirement Income Fund - Class K | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Fidelity Managed Retirement Income Fund - Class K | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	51.20%
Fidelity Managed Retirement Income Fund - Class K | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	9.30%
Fidelity Managed Retirement Income Fund - Class K | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.60%
Fidelity Managed Retirement Income Fund - Class K | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	20.50%
Fidelity Managed Retirement Income Fund - Class K | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Managed Retirement Income Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	1.10%
Fidelity Managed Retirement 2015 Fund | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	15.10%
Fidelity Managed Retirement 2015 Fund | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	12.30%
Fidelity Managed Retirement 2015 Fund | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	12%
Fidelity Managed Retirement 2015 Fund | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.90%
Fidelity Managed Retirement 2015 Fund | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	7.80%
Fidelity Managed Retirement 2015 Fund | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Fidelity Managed Retirement 2015 Fund | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Managed Retirement 2015 Fund | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Fidelity Managed Retirement 2015 Fund | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	3%
Fidelity Managed Retirement 2015 Fund | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Fidelity Managed Retirement 2015 Fund | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	48.30%
Fidelity Managed Retirement 2015 Fund | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.90%
Fidelity Managed Retirement 2015 Fund | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	16.70%
Fidelity Managed Retirement 2015 Fund | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	18%
Fidelity Managed Retirement 2015 Fund | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity Managed Retirement 2015 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.60%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	8%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	6.20%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4.10%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	36.90%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	27.50%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	25.80%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	9.80%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Advisor Managed Retirement 2035 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	11.50%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	11.20%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	11.10%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.50%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	45.90%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	17.90%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	19.30%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	15.80%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0.90%
Fidelity Advisor Managed Retirement 2020 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Managed Retirement 2015 Fund - Class K6 | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	15.10%
Fidelity Managed Retirement 2015 Fund - Class K6 | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	12.30%
Fidelity Managed Retirement 2015 Fund - Class K6 | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	12%
Fidelity Managed Retirement 2015 Fund - Class K6 | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.90%
Fidelity Managed Retirement 2015 Fund - Class K6 | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	7.80%
Fidelity Managed Retirement 2015 Fund - Class K6 | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Fidelity Managed Retirement 2015 Fund - Class K6 | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Managed Retirement 2015 Fund - Class K6 | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Fidelity Managed Retirement 2015 Fund - Class K6 | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	3%
Fidelity Managed Retirement 2015 Fund - Class K6 | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Fidelity Managed Retirement 2015 Fund - Class K6 | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	48.30%
Fidelity Managed Retirement 2015 Fund - Class K6 | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.90%
Fidelity Managed Retirement 2015 Fund - Class K6 | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	16.70%
Fidelity Managed Retirement 2015 Fund - Class K6 | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	18%
Fidelity Managed Retirement 2015 Fund - Class K6 | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity Managed Retirement 2015 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.60%
Fidelity Managed Retirement 2025 Fund | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Fidelity Managed Retirement 2025 Fund | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	10.10%
Fidelity Managed Retirement 2025 Fund | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	7%
Fidelity Managed Retirement 2025 Fund | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	6.70%
Fidelity Managed Retirement 2025 Fund | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Managed Retirement 2025 Fund | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Managed Retirement 2025 Fund | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity Managed Retirement 2025 Fund | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Managed Retirement 2025 Fund | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.90%
Fidelity Managed Retirement 2025 Fund | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Managed Retirement 2025 Fund | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	42.70%
Fidelity Managed Retirement 2025 Fund | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	21.80%
Fidelity Managed Retirement 2025 Fund | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	22%
Fidelity Managed Retirement 2025 Fund | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.50%
Fidelity Managed Retirement 2025 Fund | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Managed Retirement 2025 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	19.20%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	13.10%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	12.80%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	8.50%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	8.30%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	50.80%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	10%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	20.10%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Advisor Managed Retirement 2010 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	1%
Fidelity Managed Retirement 2015 Fund - Class K | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	15.10%
Fidelity Managed Retirement 2015 Fund - Class K | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	12.30%
Fidelity Managed Retirement 2015 Fund - Class K | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	12%
Fidelity Managed Retirement 2015 Fund - Class K | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.90%
Fidelity Managed Retirement 2015 Fund - Class K | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	7.80%
Fidelity Managed Retirement 2015 Fund - Class K | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Fidelity Managed Retirement 2015 Fund - Class K | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Managed Retirement 2015 Fund - Class K | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Fidelity Managed Retirement 2015 Fund - Class K | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	3%
Fidelity Managed Retirement 2015 Fund - Class K | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Fidelity Managed Retirement 2015 Fund - Class K | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	48.30%
Fidelity Managed Retirement 2015 Fund - Class K | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	13.90%
Fidelity Managed Retirement 2015 Fund - Class K | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	16.70%
Fidelity Managed Retirement 2015 Fund - Class K | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	18%
Fidelity Managed Retirement 2015 Fund - Class K | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity Managed Retirement 2015 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.60%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	19.20%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	13.10%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	12.80%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	8.50%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	8.30%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	50.80%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	10%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	20.10%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Advisor Managed Retirement 2010 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	1%
Fidelity Managed Retirement 2035 Fund | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Managed Retirement 2035 Fund | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Fidelity Managed Retirement 2035 Fund | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	8%
Fidelity Managed Retirement 2035 Fund | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Fidelity Managed Retirement 2035 Fund | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Fidelity Managed Retirement 2035 Fund | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	6.20%
Fidelity Managed Retirement 2035 Fund | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Fidelity Managed Retirement 2035 Fund | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Fidelity Managed Retirement 2035 Fund | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Fidelity Managed Retirement 2035 Fund | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	4.10%
Fidelity Managed Retirement 2035 Fund | AABondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	36.90%
Fidelity Managed Retirement 2035 Fund | AADomesticEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	27.50%
Fidelity Managed Retirement 2035 Fund | AAInternationalEquityFundsMember
Holdings [Line Items]
Percent of Net Asset Value	25.80%
Fidelity Managed Retirement 2035 Fund | AAInflationProtectedBondFundsMember
Holdings [Line Items]
Percent of Net Asset Value	9.80%
Fidelity Managed Retirement 2035 Fund | AAShortTermFundsMember
Holdings [Line Items]
Percent of Net Asset Value	0%
Fidelity Managed Retirement 2035 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0%