v3.25.4
Risk/Return Detail Data - FidelityFreedomFunds-PremierComboPRO - USD ($)
 12 Months Ended 60 Months Ended 108 Months Ended
Jan. 30, 2026
Jan. 30, 2026
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Jan. 30, 2026
Jan. 30, 2026
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom Retirement Fund | Fidelity Freedom Retirement Fund - Premier Class                        
Prospectus Line Items                        
Management Fees (as a percentage of Assets) [1],[2] 0.24%                      
Distribution and Service (12b-1) Fees 0.00%                      
Other Expenses (as a percentage of Assets): 0.00%                      
Expenses (as a percentage of Assets) [2] 0.24%                      
Expense Example, with Redemption, 1 Year $ 25                      
Expense Example, with Redemption, 3 Years 77                      
Expense Example, with Redemption, 5 Years 135                      
Expense Example, with Redemption, 10 Years $ 306                      
Average Annual Return, Label [Optional Text]   Return Before Taxes                    
Average Annual Return, Percent   10.62%                 2.83% 4.10% [3]
Annual Return [Percent]     10.62% 4.60% 8.42% (11.25%) 3.24% 9.07% 10.71% (1.71%)    
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom Retirement Fund                        
Prospectus Line Items                        
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity Freedom® Retirement Fund /Premier                        
Objective [Heading] Investment Objective                      
Objective, Primary [Text Block] Fidelity Freedom® Retirement Fund seeks high current income and, as a                      
Objective, Secondary [Text Block] secondary objective, capital appreciation.                      
Expense Heading [Optional Text] Fee Table                      
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                      
Shareholder Fees Caption [Optional Text] Shareholder fees                      
Shareholder Fee, Other $ 0                      
Operating Expenses Caption [Optional Text] Annual Operating Expenses                      
Portfolio Turnover [Heading] Portfolio Turnover                      
Portfolio Turnover [Text Block] The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity ® funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 14 % of the average value of its portfolio.                      
Portfolio Turnover, Rate 14.00%                      
Expenses Restated to Reflect Current [Text] Adjusted to reflect current fees.                      
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                      
Strategy [Heading] Principal Investment Strategies                      
Strategy Narrative [Text Block] Investing primarily in a combination of Fidelity® U.S. equity funds, international equity funds, bond funds, and short-term funds (underlying Fidelity® funds). Allocating assets according to a stable neutral asset allocation strategy. A revised neutral asset allocation strategy (approximately 17% in U.S. equity funds, 11% in international equity funds, 2% in commodity funds, 37% in U.S. investment grade bond funds, 5% in international bond funds, 2% in long-term treasury bond funds, 21% in short-term inflation-protected bond funds, and 6% in short-term funds; allocations do not add to 100% due to rounding) is expected to take effect by the end of the first quarter of 2027. During the fourth quarter of 2025, Fidelity Management & Research Company LLC (FMR) (the Adviser) will begin transitioning the neutral asset allocation percentages to achieve the desired allocations. The Adviser may modify the fund's neutral asset allocations from time to time when in the interests of shareholders. Buying and selling futures contracts (both long and short positions) in an effort to manage cash flows efficiently, remain fully invested, or facilitate asset allocation. The Adviser, under normal market conditions, will use an active asset allocation strategy to increase or decrease asset class exposures relative to the neutral asset allocations reflected above by up to 10% for equity funds (including commodity funds), bond funds and short-term funds to reflect the Adviser's market outlook, which is primarily focused on the intermediate term. The Adviser may also make active asset allocations within other asset classes (such as high yield debt (also referred to as junk bonds), floating rate debt, real estate debt, and emerging markets debt) from 0% to 10% of the fund's total assets individually, but no more than 25% in aggregate within those other asset classes. Emerging markets include countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets that the Adviser identifies as having similar emerging markets characteristics.                      
Bar Chart and Performance Table [Heading] Performance                      
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time. The hypothetical composite of market indexes has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)   for more recent performance information. Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time.                      
Performance One Year or Less [Text] Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Availability Website Address [Text] www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)                        
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                      
Bar Chart [Heading] Year-by-Year Returns                      
Annual Return, Inception Date Jun. 07, 2017                      
Bar Chart, Returns for Class Not Offered in Prospectus [Text] * The returns shown above are for Class K6, a class of shares of the fund that is not offered through this prospectus. Premier Class   would have substantially similar annual returns to Class K6 because the classes are invested in the same portfolio of securities. Premier Class's   returns would differ from Class K6's returns only to the extent that the classes do not have the same expenses.                      
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                      
Highest Quarterly Return, Date Dec. 31, 2023                      
Highest Quarterly Return 6.51%                      
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                      
Lowest Quarterly Return, Date Jun. 30, 2022                      
Lowest Quarterly Return (6.14%)                      
Performance Table Heading Average Annual Returns                      
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.                      
Performance Table Not Relevant to Tax Deferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                      
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom Retirement Fund | After Taxes on Distributions | Fidelity Freedom Retirement Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                    
Average Annual Return, Percent   9.03%                 1.25% 2.55% [3]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom Retirement Fund | After Taxes on Distributions and Sales | Fidelity Freedom Retirement Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                    
Average Annual Return, Percent   6.26%                 1.58% 2.63% [3]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom Retirement Fund | F0199                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Fidelity Freedom Retirement Composite Index℠                    
Average Annual Return, Percent   9.39%                 2.70% 4.09%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom Retirement Fund | LB001                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Bloomberg U.S. Aggregate Bond Index                    
Average Annual Return, Percent   7.30%                 (0.36%) 1.74%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2010 Fund | Fidelity Freedom 2010 Fund - Premier Class                        
Prospectus Line Items                        
Management Fees (as a percentage of Assets) [4],[5] 0.24%                      
Distribution and Service (12b-1) Fees 0.00%                      
Other Expenses (as a percentage of Assets): 0.00%                      
Expenses (as a percentage of Assets) [5] 0.24%                      
Expense Example, with Redemption, 1 Year $ 25                      
Expense Example, with Redemption, 3 Years 77                      
Expense Example, with Redemption, 5 Years 135                      
Expense Example, with Redemption, 10 Years $ 306                      
Average Annual Return, Label [Optional Text]   Return Before Taxes                    
Average Annual Return, Percent   11.66%                 3.55% 5.18% [6]
Annual Return [Percent]     11.66% 5.55% 9.97% (13.04%) 5.65% 11.26% 14.46% (3.40%)    
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2010 Fund                        
Prospectus Line Items                        
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity Freedom® 2010 Fund /Premier                        
Objective [Heading] Investment Objective                      
Objective, Primary [Text Block] Fidelity Freedom® 2010 Fund seeks high total return until its target retirement date. Thereafter the fund's objective will be to seek high current income and, as a                      
Objective, Secondary [Text Block] secondary objective, capital appreciation.                      
Expense Heading [Optional Text] Fee Table                      
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                      
Shareholder Fees Caption [Optional Text] Shareholder fees                      
Shareholder Fee, Other $ 0                      
Operating Expenses Caption [Optional Text] Annual Operating Expenses                      
Portfolio Turnover [Heading] Portfolio Turnover                      
Portfolio Turnover [Text Block] The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity ® funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 14 % of the average value of its portfolio.                      
Portfolio Turnover, Rate 14.00%                      
Expenses Restated to Reflect Current [Text] Adjusted to reflect current fees.                      
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                      
Strategy [Heading] Principal Investment Strategies                      
Strategy Narrative [Text Block] Investing primarily in a combination of Fidelity® U.S. equity funds, international equity funds, bond funds, and short-term funds (underlying Fidelity® funds). Allocating assets according to a neutral asset allocation strategy shown in the glide path below that adjusts over time until it reaches an allocation similar to that of the Fidelity Freedom® Retirement Fund, approximately 10 to 19 years after the year 2010. Fidelity Management & Research Company LLC (FMR) (the Adviser) may modify the fund's neutral asset allocations from time to time when in the interests of shareholders. A revised neutral asset allocation strategy for the fund is expected to take effect by the end of the first quarter of 2027, as illustrated in the following chart. During the fourth quarter of 2025, the Adviser will begin transitioning the neutral asset allocation percentages to achieve the desired allocations.     The neutral asset allocation shown in the glide path depicts the allocation to U.S. equity funds (including commodity funds), international equity funds, bond funds (including U.S. investment grade bond, international bond, short-term inflation-protected bond, long-term inflation-protected bond, and long-term treasury bond funds), and short-term funds. Buying and selling futures contracts (both long and short positions) in an effort to manage cash flows efficiently, remain fully invested, or facilitate asset allocation. The Adviser, under normal market conditions, will make investments that are consistent with seeking high total return for several years beyond the fund's target retirement date in an effort to achieve the fund's overall investment objective. The Adviser, under normal market conditions, will use an active asset allocation strategy to increase or decrease asset class exposures relative to the neutral asset allocations reflected above by up to 10% for equity funds (including commodity funds), bond funds and short-term funds to reflect the Adviser's market outlook, which is primarily focused on the intermediate term. The asset allocations in the glide path above are referred to as neutral because they do not reflect any decisions made by the Adviser to overweight or underweight an asset class. The Adviser may also make active asset allocations within other asset classes (such as high yield debt (also referred to as junk bonds), floating rate debt, real estate debt, and emerging markets debt) from 0% to 10% of the fund's total assets individually, but no more than 25% in aggregate within those other asset classes. Such asset classes are not reflected in the neutral asset allocations reflected in the glide path above. Emerging markets include countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets that the Adviser identifies as having similar emerging markets characteristics. Designed for investors who retired in or within a few years of 2010 (target retirement date) at or around age 65. When the neutral asset allocation of a fund matches Fidelity Freedom® Retirement Fund's neutral asset allocation (approximately 10 to 19 years after the year indicated in the fund's name), the Board of Trustees may combine the fund with Fidelity Freedom® Retirement Fund, without shareholder approval, and the fund's shareholders will become shareholders of Fidelity Freedom® Retirement Fund.                      
Bar Chart and Performance Table [Heading] Performance                      
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time. The hypothetical composite of market indexes has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)   for more recent performance information. Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time.                      
Performance One Year or Less [Text] Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Availability Website Address [Text] www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)                        
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                      
Bar Chart [Heading] Year-by-Year Returns                      
Annual Return, Inception Date Jun. 07, 2017                      
Bar Chart, Returns for Class Not Offered in Prospectus [Text] * The returns shown above are for Class K6, a class of shares of the fund that is not offered through this prospectus. Premier Class   would have substantially similar annual returns to Class K6 because the classes are invested in the same portfolio of securities. Premier Class's   returns would differ from Class K6's returns only to the extent that the classes do not have the same expenses.                      
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                      
Highest Quarterly Return, Date Jun. 30, 2020                      
Highest Quarterly Return 9.27%                      
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                      
Lowest Quarterly Return, Date Mar. 31, 2020                      
Lowest Quarterly Return (8.30%)                      
Performance Table Heading Average Annual Returns                      
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.                      
Performance Table Not Relevant to Tax Deferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                      
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2010 Fund | After Taxes on Distributions | Fidelity Freedom 2010 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                    
Average Annual Return, Percent   9.66%                 1.74% 3.31% [6]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2010 Fund | After Taxes on Distributions and Sales | Fidelity Freedom 2010 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                    
Average Annual Return, Percent   7.20%                 2.15% 3.47% [6]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2010 Fund | LB001                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Bloomberg U.S. Aggregate Bond Index                    
Average Annual Return, Percent   7.30%                 (0.36%) 1.74%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2010 Fund | F0201                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Fidelity Freedom 2010 Composite Index℠                    
Average Annual Return, Percent   10.33%                 3.34% 5.12%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2015 Fund | Fidelity Freedom 2015 Fund - Premier Class                        
Prospectus Line Items                        
Management Fees (as a percentage of Assets) [7],[8] 0.26%                      
Distribution and Service (12b-1) Fees 0.00%                      
Other Expenses (as a percentage of Assets): 0.00%                      
Expenses (as a percentage of Assets) [8] 0.26%                      
Expense Example, with Redemption, 1 Year $ 27                      
Expense Example, with Redemption, 3 Years 84                      
Expense Example, with Redemption, 5 Years 146                      
Expense Example, with Redemption, 10 Years $ 331                      
Average Annual Return, Label [Optional Text]   Return Before Taxes                    
Average Annual Return, Percent   13.38%                 4.37% 6.01% [9]
Annual Return [Percent]     13.38% 6.61% 11.54% (14.48%) 7.38% 12.58% 16.48% (4.32%)    
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2015 Fund                        
Prospectus Line Items                        
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity Freedom® 2015 Fund /Premier                        
Objective [Heading] Investment Objective                      
Objective, Primary [Text Block] Fidelity Freedom® 2015 Fund seeks high total return until its target retirement date. Thereafter the fund's objective will be to seek high current income and, as a                      
Objective, Secondary [Text Block] secondary objective, capital appreciation.                      
Expense Heading [Optional Text] Fee Table                      
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                      
Shareholder Fees Caption [Optional Text] Shareholder fees                      
Shareholder Fee, Other $ 0                      
Operating Expenses Caption [Optional Text] Annual Operating Expenses                      
Portfolio Turnover [Heading] Portfolio Turnover                      
Portfolio Turnover [Text Block] The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity ® funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 14 % of the average value of its portfolio.                      
Portfolio Turnover, Rate 14.00%                      
Expenses Restated to Reflect Current [Text] Adjusted to reflect current fees.                      
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                      
Strategy [Heading] Principal Investment Strategies                      
Strategy Narrative [Text Block] Investing primarily in a combination of Fidelity® U.S. equity funds, international equity funds, bond funds, and short-term funds (underlying Fidelity® funds). Allocating assets according to a neutral asset allocation strategy shown in the glide path below that adjusts over time until it reaches an allocation similar to that of the Fidelity Freedom® Retirement Fund, approximately 10 to 19 years after the year 2015. Fidelity Management & Research Company LLC (FMR) (the Adviser) may modify the fund's neutral asset allocations from time to time when in the interests of shareholders. A revised neutral asset allocation strategy for the fund is expected to take effect by the end of the first quarter of 2027, as illustrated in the following chart. During the fourth quarter of 2025, the Adviser will begin transitioning the neutral asset allocation percentages to achieve the desired allocations.     The neutral asset allocation shown in the glide path depicts the allocation to U.S. equity funds (including commodity funds), international equity funds, bond funds (including U.S. investment grade bond, international bond, short-term inflation-protected bond, long-term inflation-protected bond, and long-term treasury bond funds), and short-term funds. Buying and selling futures contracts (both long and short positions) in an effort to manage cash flows efficiently, remain fully invested, or facilitate asset allocation. The Adviser, under normal market conditions, will make investments that are consistent with seeking high total return for several years beyond the fund's target retirement date in an effort to achieve the fund's overall investment objective. The Adviser, under normal market conditions, will use an active asset allocation strategy to increase or decrease asset class exposures relative to the neutral asset allocations reflected above by up to 10% for equity funds (including commodity funds), bond funds and short-term funds to reflect the Adviser's market outlook, which is primarily focused on the intermediate term. The asset allocations in the glide path above are referred to as neutral because they do not reflect any decisions made by the Adviser to overweight or underweight an asset class. The Adviser may also make active asset allocations within other asset classes (such as high yield debt (also referred to as junk bonds), floating rate debt, real estate debt, and emerging markets debt) from 0% to 10% of the fund's total assets individually, but no more than 25% in aggregate within those other asset classes. Such asset classes are not reflected in the neutral asset allocations reflected in the glide path above. Emerging markets include countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets that the Adviser identifies as having similar emerging markets characteristics. Designed for investors who retired in or within a few years of 2015 (target retirement date) at or around age 65. When the neutral asset allocation of a fund matches Fidelity Freedom® Retirement Fund's neutral asset allocation (approximately 10 to 19 years after the year indicated in the fund's name), the Board of Trustees may combine the fund with Fidelity Freedom® Retirement Fund, without shareholder approval, and the fund's shareholders will become shareholders of Fidelity Freedom® Retirement Fund.                      
Bar Chart and Performance Table [Heading] Performance                      
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time. The hypothetical composite of market indexes has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)   for more recent performance information. Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time.                      
Performance One Year or Less [Text] Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Availability Website Address [Text] www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)                        
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                      
Bar Chart [Heading] Year-by-Year Returns                      
Annual Return, Inception Date Jun. 07, 2017                      
Bar Chart, Returns for Class Not Offered in Prospectus [Text] * The returns shown above are for Class K6, a class of shares of the fund that is not offered through this prospectus. Premier Class   would have substantially similar annual returns to Class K6 because the classes are invested in the same portfolio of securities. Premier Class's   returns would differ from Class K6's returns only to the extent that the classes do not have the same expenses.                      
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                      
Highest Quarterly Return, Date Jun. 30, 2020                      
Highest Quarterly Return 10.90%                      
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                      
Lowest Quarterly Return, Date Mar. 31, 2020                      
Lowest Quarterly Return (10.44%)                      
Performance Table Heading Average Annual Returns                      
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.                      
Performance Table Not Relevant to Tax Deferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                      
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2015 Fund | After Taxes on Distributions | Fidelity Freedom 2015 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                    
Average Annual Return, Percent   11.01%                 2.34% 3.95% [9]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2015 Fund | After Taxes on Distributions and Sales | Fidelity Freedom 2015 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                    
Average Annual Return, Percent   8.53%                 2.78% 4.12% [9]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2015 Fund | LB001                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Bloomberg U.S. Aggregate Bond Index                    
Average Annual Return, Percent   7.30%                 (0.36%) 1.74%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2015 Fund | F0550                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Fidelity Freedom 2015 Composite Index℠                    
Average Annual Return, Percent   11.90%                 4.07% 5.90%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2020 Fund | Fidelity Freedom 2020 Fund - Premier Class                        
Prospectus Line Items                        
Management Fees (as a percentage of Assets) [10],[11] 0.28%                      
Distribution and Service (12b-1) Fees 0.00%                      
Other Expenses (as a percentage of Assets): 0.00%                      
Expenses (as a percentage of Assets) [11] 0.28%                      
Expense Example, with Redemption, 1 Year $ 29                      
Expense Example, with Redemption, 3 Years 90                      
Expense Example, with Redemption, 5 Years 157                      
Expense Example, with Redemption, 10 Years $ 356                      
Average Annual Return, Label [Optional Text]   Return Before Taxes                    
Average Annual Return, Percent   15.15%                 5.16% 6.79% [12]
Annual Return [Percent]     15.15% 7.61% 13.17% (15.92%) 9.07% 13.94% 18.15% (5.03%)    
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2020 Fund                        
Prospectus Line Items                        
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity Freedom® 2020 Fund /Premier                        
Objective [Heading] Investment Objective                      
Objective, Primary [Text Block] Fidelity Freedom® 2020 Fund seeks high total return until its target retirement date. Thereafter the fund's objective will be to seek high current income and, as a                      
Objective, Secondary [Text Block] secondary objective, capital appreciation.                      
Expense Heading [Optional Text] Fee Table                      
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                      
Shareholder Fees Caption [Optional Text] Shareholder fees                      
Shareholder Fee, Other $ 0                      
Operating Expenses Caption [Optional Text] Annual Operating Expenses                      
Portfolio Turnover [Heading] Portfolio Turnover                      
Portfolio Turnover [Text Block] The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity ® funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 14 % of the average value of its portfolio.                      
Portfolio Turnover, Rate 14.00%                      
Expenses Restated to Reflect Current [Text] Adjusted to reflect current fees.                      
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                      
Strategy [Heading] Principal Investment Strategies                      
Strategy Narrative [Text Block] Investing primarily in a combination of Fidelity® U.S. equity funds, international equity funds, bond funds, and short-term funds (underlying Fidelity® funds). Allocating assets according to a neutral asset allocation strategy shown in the glide path below that adjusts over time until it reaches an allocation similar to that of the Fidelity Freedom® Retirement Fund, approximately 10 to 19 years after the year 2020. Fidelity Management & Research Company LLC (FMR) (the Adviser) may modify the fund's neutral asset allocations from time to time when in the interests of shareholders. A revised neutral asset allocation strategy for the fund is expected to take effect by the end of the first quarter of 2027, as illustrated in the following chart. During the fourth quarter of 2025, the Adviser will begin transitioning the neutral asset allocation percentages to achieve the desired allocations.     The neutral asset allocation shown in the glide path depicts the allocation to U.S. equity funds (including commodity funds), international equity funds, bond funds (including U.S. investment grade bond, international bond, short-term inflation-protected bond, long-term inflation-protected bond, and long-term treasury bond funds), and short-term funds. Buying and selling futures contracts (both long and short positions) in an effort to manage cash flows efficiently, remain fully invested, or facilitate asset allocation. The Adviser, under normal market conditions, will make investments that are consistent with seeking high total return for several years beyond the fund's target retirement date in an effort to achieve the fund's overall investment objective. The Adviser, under normal market conditions, will use an active asset allocation strategy to increase or decrease asset class exposures relative to the neutral asset allocations reflected above by up to 10% for equity funds (including commodity funds), bond funds and short-term funds to reflect the Adviser's market outlook, which is primarily focused on the intermediate term. The asset allocations in the glide path above are referred to as neutral because they do not reflect any decisions made by the Adviser to overweight or underweight an asset class. The Adviser may also make active asset allocations within other asset classes (such as high yield debt (also referred to as junk bonds), floating rate debt, real estate debt, and emerging markets debt) from 0% to 10% of the fund's total assets individually, but no more than 25% in aggregate within those other asset classes. Such asset classes are not reflected in the neutral asset allocations reflected in the glide path above. Emerging markets include countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets that the Adviser identifies as having similar emerging markets characteristics. Designed for investors who retired in or within a few years of 2020 (target retirement date) at or around age 65. When the neutral asset allocation of a fund matches Fidelity Freedom® Retirement Fund's neutral asset allocation (approximately 10 to 19 years after the year indicated in the fund's name), the Board of Trustees may combine the fund with Fidelity Freedom® Retirement Fund, without shareholder approval, and the fund's shareholders will become shareholders of Fidelity Freedom® Retirement Fund.                      
Bar Chart and Performance Table [Heading] Performance                      
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time. The hypothetical composite of market indexes has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)   for more recent performance information. Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time.                      
Performance One Year or Less [Text] Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Availability Website Address [Text] www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)                        
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                      
Bar Chart [Heading] Year-by-Year Returns                      
Annual Return, Inception Date Jun. 07, 2017                      
Bar Chart, Returns for Class Not Offered in Prospectus [Text] * The returns shown above are for Class K6, a class of shares of the fund that is not offered through this prospectus. Premier Class   would have substantially similar annual returns to Class K6 because the classes are invested in the same portfolio of securities. Premier Class's   returns would differ from Class K6's returns only to the extent that the classes do not have the same expenses.                      
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                      
Highest Quarterly Return, Date Jun. 30, 2020                      
Highest Quarterly Return 12.47%                      
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                      
Lowest Quarterly Return, Date Mar. 31, 2020                      
Lowest Quarterly Return (12.32%)                      
Performance Table Heading Average Annual Returns                      
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.                      
Performance Table Not Relevant to Tax Deferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                      
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2020 Fund | After Taxes on Distributions | Fidelity Freedom 2020 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                    
Average Annual Return, Percent   12.54%                 2.96% 4.65% [12]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2020 Fund | After Taxes on Distributions and Sales | Fidelity Freedom 2020 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                    
Average Annual Return, Percent   9.78%                 3.39% 4.75% [12]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2020 Fund | LB001                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Bloomberg U.S. Aggregate Bond Index                    
Average Annual Return, Percent   7.30%                 (0.36%) 1.74%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2020 Fund | F0202                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Fidelity Freedom 2020 Composite Index℠                    
Average Annual Return, Percent   13.49%                 4.77% 6.62%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2025 Fund | Fidelity Freedom 2025 Fund - Premier Class                        
Prospectus Line Items                        
Management Fees (as a percentage of Assets) [13],[14] 0.32%                      
Distribution and Service (12b-1) Fees 0.00%                      
Other Expenses (as a percentage of Assets): 0.00%                      
Expenses (as a percentage of Assets) [14] 0.32%                      
Expense Example, with Redemption, 1 Year $ 33                      
Expense Example, with Redemption, 3 Years 103                      
Expense Example, with Redemption, 5 Years 180                      
Expense Example, with Redemption, 10 Years $ 406                      
Average Annual Return, Label [Optional Text]   Return Before Taxes                    
Average Annual Return, Percent   16.75%                 5.94% 7.49% [15]
Annual Return [Percent]     16.75% 8.48% 14.44% (16.54%) 10.29% 14.87% 19.72% (5.78%)    
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2025 Fund                        
Prospectus Line Items                        
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity Freedom® 2025 Fund /Premier                        
Objective [Heading] Investment Objective                      
Objective, Primary [Text Block] Fidelity Freedom® 2025 Fund seeks high total return until its target retirement date. Thereafter the fund's objective will be to seek high current income and, as a                      
Objective, Secondary [Text Block] secondary objective, capital appreciation.                      
Expense Heading [Optional Text] Fee Table                      
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                      
Shareholder Fees Caption [Optional Text] Shareholder fees                      
Shareholder Fee, Other $ 0                      
Operating Expenses Caption [Optional Text] Annual Operating Expenses                      
Portfolio Turnover [Heading] Portfolio Turnover                      
Portfolio Turnover [Text Block] The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity ® funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 15 % of the average value of its portfolio.                      
Portfolio Turnover, Rate 15.00%                      
Expenses Restated to Reflect Current [Text] Adjusted to reflect current fees.                      
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                      
Strategy [Heading] Principal Investment Strategies                      
Strategy Narrative [Text Block] Investing primarily in a combination of Fidelity® U.S. equity funds, international equity funds, bond funds, and short-term funds (underlying Fidelity® funds). Allocating assets according to a neutral asset allocation strategy shown in the glide path below that adjusts over time until it reaches an allocation similar to that of the Fidelity Freedom® Retirement Fund, approximately 10 to 19 years after the year 2025. Fidelity Management & Research Company LLC (FMR) (the Adviser) may modify the fund's neutral asset allocations from time to time when in the interests of shareholders. A revised neutral asset allocation strategy for the fund is expected to take effect by the end of the first quarter of 2027, as illustrated in the following chart. During the fourth quarter of 2025, the Adviser will begin transitioning the neutral asset allocation percentages to achieve the desired allocations.     The neutral asset allocation shown in the glide path depicts the allocation to U.S. equity funds (including commodity funds), international equity funds, bond funds (including U.S. investment grade bond, international bond, short-term inflation-protected bond, long-term inflation-protected bond, and long-term treasury bond funds), and short-term funds. Buying and selling futures contracts (both long and short positions) in an effort to manage cash flows efficiently, remain fully invested, or facilitate asset allocation. The Adviser, under normal market conditions, will make investments that are consistent with seeking high total return for several years beyond the fund's target retirement date in an effort to achieve the fund's overall investment objective. The Adviser, under normal market conditions, will use an active asset allocation strategy to increase or decrease asset class exposures relative to the neutral asset allocations reflected above by up to 10% for equity funds (including commodity funds), bond funds and short-term funds to reflect the Adviser's market outlook, which is primarily focused on the intermediate term. The asset allocations in the glide path above are referred to as neutral because they do not reflect any decisions made by the Adviser to overweight or underweight an asset class. The Adviser may also make active asset allocations within other asset classes (such as high yield debt (also referred to as junk bonds), floating rate debt, real estate debt, and emerging markets debt) from 0% to 10% of the fund's total assets individually, but no more than 25% in aggregate within those other asset classes. Such asset classes are not reflected in the neutral asset allocations reflected in the glide path above. Emerging markets include countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets that the Adviser identifies as having similar emerging markets characteristics. Designed for investors who anticipate retiring in or within a few years of 2025 (target retirement date) at or around age 65. When the neutral asset allocation of a fund matches Fidelity Freedom® Retirement Fund's neutral asset allocation (approximately 10 to 19 years after the year indicated in the fund's name), the Board of Trustees may combine the fund with Fidelity Freedom® Retirement Fund, without shareholder approval, and the fund's shareholders will become shareholders of Fidelity Freedom® Retirement Fund.                      
Bar Chart and Performance Table [Heading] Performance                      
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time. The hypothetical composite of market indexes has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)   for more recent performance information. Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time.                      
Performance One Year or Less [Text] Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Availability Website Address [Text] www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)                        
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                      
Bar Chart [Heading] Year-by-Year Returns                      
Annual Return, Inception Date Jun. 07, 2017                      
Bar Chart, Returns for Class Not Offered in Prospectus [Text] * The returns shown above are for Class K6, a class of shares of the fund that is not offered through this prospectus. Premier Class   would have substantially similar annual returns to Class K6 because the classes are invested in the same portfolio of securities. Premier Class's   returns would differ from Class K6's returns only to the extent that the classes do not have the same expenses.                      
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                      
Highest Quarterly Return, Date Jun. 30, 2020                      
Highest Quarterly Return 13.70%                      
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                      
Lowest Quarterly Return, Date Mar. 31, 2020                      
Lowest Quarterly Return (13.81%)                      
Performance Table Heading Average Annual Returns                      
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.                      
Performance Table Not Relevant to Tax Deferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                      
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2025 Fund | After Taxes on Distributions | Fidelity Freedom 2025 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                    
Average Annual Return, Percent   14.39%                 3.94% 5.55% [15]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2025 Fund | After Taxes on Distributions and Sales | Fidelity Freedom 2025 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                    
Average Annual Return, Percent   10.64%                 4.04% 5.36% [15]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2025 Fund | F0551                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Fidelity Freedom 2025 Composite Index℠                    
Average Annual Return, Percent   14.98%                 5.50% 7.29%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2025 Fund | SP001                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   S&P 500® Index                    
Average Annual Return, Percent   17.88%                 14.42% 14.71%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2030 Fund | Fidelity Freedom 2030 Fund - Premier Class                        
Prospectus Line Items                        
Management Fees (as a percentage of Assets) [16],[17] 0.35%                      
Distribution and Service (12b-1) Fees 0.00%                      
Other Expenses (as a percentage of Assets): 0.00%                      
Expenses (as a percentage of Assets) [17] 0.35%                      
Expense Example, with Redemption, 1 Year $ 36                      
Expense Example, with Redemption, 3 Years 113                      
Expense Example, with Redemption, 5 Years 197                      
Expense Example, with Redemption, 10 Years $ 443                      
Average Annual Return, Label [Optional Text]   Return Before Taxes                    
Average Annual Return, Percent   17.95%                 6.80% 8.35% [18]
Annual Return [Percent]     17.95% 9.51% 15.72% (16.77%) 11.69% 15.84% 22.06% (6.83%)    
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2030 Fund                        
Prospectus Line Items                        
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity Freedom® 2030 Fund /Premier                        
Objective [Heading] Investment Objective                      
Objective, Primary [Text Block] Fidelity Freedom® 2030 Fund seeks high total return until its target retirement date. Thereafter the fund's objective will be to seek high current income and, as a                      
Objective, Secondary [Text Block] secondary objective, capital appreciation.                      
Expense Heading [Optional Text] Fee Table                      
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                      
Shareholder Fees Caption [Optional Text] Shareholder fees                      
Shareholder Fee, Other $ 0                      
Operating Expenses Caption [Optional Text] Annual Operating Expenses                      
Portfolio Turnover [Heading] Portfolio Turnover                      
Portfolio Turnover [Text Block] The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity ® funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 16 % of the average value of its portfolio.                      
Portfolio Turnover, Rate 16.00%                      
Expenses Restated to Reflect Current [Text] Adjusted to reflect current fees.                      
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                      
Strategy [Heading] Principal Investment Strategies                      
Strategy Narrative [Text Block] Investing primarily in a combination of Fidelity® U.S. equity funds, international equity funds, bond funds, and short-term funds (underlying Fidelity® funds). Allocating assets according to a neutral asset allocation strategy shown in the glide path below that adjusts over time until it reaches an allocation similar to that of the Fidelity Freedom® Retirement Fund, approximately 10 to 19 years after the year 2030. Fidelity Management & Research Company LLC (FMR) (the Adviser) may modify the fund's neutral asset allocations from time to time when in the interests of shareholders. A revised neutral asset allocation strategy for the fund is expected to take effect by the end of the first quarter of 2027, as illustrated in the following chart. During the fourth quarter of 2025, the Adviser will begin transitioning the neutral asset allocation percentages to achieve the desired allocations.     The neutral asset allocation shown in the glide path depicts the allocation to U.S. equity funds (including commodity funds), international equity funds, bond funds (including U.S. investment grade bond, international bond, short-term inflation-protected bond, long-term inflation-protected bond, and long-term treasury bond funds), and short-term funds. Buying and selling futures contracts (both long and short positions) in an effort to manage cash flows efficiently, remain fully invested, or facilitate asset allocation. The Adviser, under normal market conditions, will make investments that are consistent with seeking high total return for several years beyond the fund's target retirement date in an effort to achieve the fund's overall investment objective. The Adviser, under normal market conditions, will use an active asset allocation strategy to increase or decrease asset class exposures relative to the neutral asset allocations reflected above by up to 10% for equity funds (including commodity funds), bond funds and short-term funds to reflect the Adviser's market outlook, which is primarily focused on the intermediate term. The asset allocations in the glide path above are referred to as neutral because they do not reflect any decisions made by the Adviser to overweight or underweight an asset class. The Adviser may also make active asset allocations within other asset classes (such as high yield debt (also referred to as junk bonds), floating rate debt, real estate debt, and emerging markets debt) from 0% to 10% of the fund's total assets individually, but no more than 25% in aggregate within those other asset classes. Such asset classes are not reflected in the neutral asset allocations reflected in the glide path above. Emerging markets include countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets that the Adviser identifies as having similar emerging markets characteristics. Designed for investors who anticipate retiring in or within a few years of 2030 (target retirement date) at or around age 65. When the neutral asset allocation of a fund matches Fidelity Freedom® Retirement Fund's neutral asset allocation (approximately 10 to 19 years after the year indicated in the fund's name), the Board of Trustees may combine the fund with Fidelity Freedom® Retirement Fund, without shareholder approval, and the fund's shareholders will become shareholders of Fidelity Freedom® Retirement Fund.                      
Bar Chart and Performance Table [Heading] Performance                      
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time. The hypothetical composite of market indexes has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)   for more recent performance information. Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time.                      
Performance One Year or Less [Text] Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Availability Website Address [Text] www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)                        
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                      
Bar Chart [Heading] Year-by-Year Returns                      
Annual Return, Inception Date Jun. 07, 2017                      
Bar Chart, Returns for Class Not Offered in Prospectus [Text] * The returns shown above are for Class K6, a class of shares of the fund that is not offered through this prospectus. Premier Class   would have substantially similar annual returns to Class K6 because the classes are invested in the same portfolio of securities. Premier Class's   returns would differ from Class K6's returns only to the extent that the classes do not have the same expenses.                      
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                      
Highest Quarterly Return, Date Jun. 30, 2020                      
Highest Quarterly Return 15.42%                      
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                      
Lowest Quarterly Return, Date Mar. 31, 2020                      
Lowest Quarterly Return (15.93%)                      
Performance Table Heading Average Annual Returns                      
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.                      
Performance Table Not Relevant to Tax Deferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                      
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2030 Fund | After Taxes on Distributions | Fidelity Freedom 2030 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                    
Average Annual Return, Percent   15.86%                 4.88% 6.41% [18]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2030 Fund | After Taxes on Distributions and Sales | Fidelity Freedom 2030 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                    
Average Annual Return, Percent   11.21%                 4.74% 6.07% [18]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2030 Fund | SP001                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   S&P 500® Index                    
Average Annual Return, Percent   17.88%                 14.42% 14.71%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2030 Fund | F0203                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Fidelity Freedom 2030 Composite Index℠                    
Average Annual Return, Percent   15.99%                 6.30% 8.13%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2035 Fund | Fidelity Freedom 2035 Fund - Premier Class                        
Prospectus Line Items                        
Management Fees (as a percentage of Assets) [19],[20] 0.36%                      
Distribution and Service (12b-1) Fees 0.00%                      
Other Expenses (as a percentage of Assets): 0.00%                      
Expenses (as a percentage of Assets) [20] 0.36%                      
Expense Example, with Redemption, 1 Year $ 37                      
Expense Example, with Redemption, 3 Years 116                      
Expense Example, with Redemption, 5 Years 202                      
Expense Example, with Redemption, 10 Years $ 456                      
Average Annual Return, Label [Optional Text]   Return Before Taxes                    
Average Annual Return, Percent   19.56%                 8.23% 9.59% [21]
Annual Return [Percent]     19.56% 11.33% 18.06% (17.51%) 14.56% 17.41% 24.74% (8.15%)    
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2035 Fund                        
Prospectus Line Items                        
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity Freedom® 2035 Fund /Premier                        
Objective [Heading] Investment Objective                      
Objective, Primary [Text Block] Fidelity Freedom® 2035 Fund seeks high total return until its target retirement date. Thereafter the fund's objective will be to seek high current income and, as a                      
Objective, Secondary [Text Block] secondary objective, capital appreciation.                      
Expense Heading [Optional Text] Fee Table                      
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                      
Shareholder Fees Caption [Optional Text] Shareholder fees                      
Shareholder Fee, Other $ 0                      
Operating Expenses Caption [Optional Text] Annual Operating Expenses                      
Portfolio Turnover [Heading] Portfolio Turnover                      
Portfolio Turnover [Text Block] The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity ® funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 19 % of the average value of its portfolio.                      
Portfolio Turnover, Rate 19.00%                      
Expenses Restated to Reflect Current [Text] Adjusted to reflect current fees.                      
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                      
Strategy [Heading] Principal Investment Strategies                      
Strategy Narrative [Text Block] Investing primarily in a combination of Fidelity® U.S. equity funds, international equity funds, bond funds, and short-term funds (underlying Fidelity® funds). Allocating assets according to a neutral asset allocation strategy shown in the glide path below that adjusts over time until it reaches an allocation similar to that of the Fidelity Freedom® Retirement Fund, approximately 10 to 19 years after the year 2035. Fidelity Management & Research Company LLC (FMR) (the Adviser) may modify the fund's neutral asset allocations from time to time when in the interests of shareholders. A revised neutral asset allocation strategy for the fund is expected to take effect by the end of the first quarter of 2027, as illustrated in the following chart. During the fourth quarter of 2025, the Adviser will begin transitioning the neutral asset allocation percentages to achieve the desired allocations.     The neutral asset allocation shown in the glide path depicts the allocation to U.S. equity funds (including commodity funds), international equity funds, bond funds (including U.S. investment grade bond, international bond, short-term inflation-protected bond, long-term inflation-protected bond, and long-term treasury bond funds), and short-term funds. Buying and selling futures contracts (both long and short positions) in an effort to manage cash flows efficiently, remain fully invested, or facilitate asset allocation. The Adviser, under normal market conditions, will make investments that are consistent with seeking high total return for several years beyond the fund's target retirement date in an effort to achieve the fund's overall investment objective. The Adviser, under normal market conditions, will use an active asset allocation strategy to increase or decrease asset class exposures relative to the neutral asset allocations reflected above by up to 10% for equity funds (including commodity funds), bond funds and short-term funds to reflect the Adviser's market outlook, which is primarily focused on the intermediate term. The asset allocations in the glide path above are referred to as neutral because they do not reflect any decisions made by the Adviser to overweight or underweight an asset class. The Adviser may also make active asset allocations within other asset classes (such as high yield debt (also referred to as junk bonds), floating rate debt, real estate debt, and emerging markets debt) from 0% to 10% of the fund's total assets individually, but no more than 25% in aggregate within those other asset classes. Such asset classes are not reflected in the neutral asset allocations reflected in the glide path above. Emerging markets include countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets that the Adviser identifies as having similar emerging markets characteristics. Designed for investors who anticipate retiring in or within a few years of 2035 (target retirement date) at or around age 65. When the neutral asset allocation of a fund matches Fidelity Freedom® Retirement Fund's neutral asset allocation (approximately 10 to 19 years after the year indicated in the fund's name), the Board of Trustees may combine the fund with Fidelity Freedom® Retirement Fund, without shareholder approval, and the fund's shareholders will become shareholders of Fidelity Freedom® Retirement Fund.                      
Bar Chart and Performance Table [Heading] Performance                      
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time. The hypothetical composite of market indexes has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)   for more recent performance information. Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time.                      
Performance One Year or Less [Text] Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Availability Website Address [Text] www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)                        
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                      
Bar Chart [Heading] Year-by-Year Returns                      
Annual Return, Inception Date Jun. 07, 2017                      
Bar Chart, Returns for Class Not Offered in Prospectus [Text] * The returns shown above are for Class K6, a class of shares of the fund that is not offered through this prospectus. Premier Class   would have substantially similar annual returns to Class K6 because the classes are invested in the same portfolio of securities. Premier Class's   returns would differ from Class K6's returns only to the extent that the classes do not have the same expenses.                      
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                      
Highest Quarterly Return, Date Jun. 30, 2020                      
Highest Quarterly Return 17.93%                      
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                      
Lowest Quarterly Return, Date Mar. 31, 2020                      
Lowest Quarterly Return (19.14%)                      
Performance Table Heading Average Annual Returns                      
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.                      
Performance Table Not Relevant to Tax Deferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                      
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2035 Fund | After Taxes on Distributions | Fidelity Freedom 2035 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                    
Average Annual Return, Percent   17.58%                 6.29% 7.65% [21]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2035 Fund | After Taxes on Distributions and Sales | Fidelity Freedom 2035 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                    
Average Annual Return, Percent   12.13%                 5.89% 7.12% [21]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2035 Fund | SP001                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   S&P 500® Index                    
Average Annual Return, Percent   17.88%                 14.42% 14.71%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2035 Fund | F0552                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Fidelity Freedom 2035 Composite Index℠                    
Average Annual Return, Percent   17.39%                 7.63% 9.32%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2040 Fund | Fidelity Freedom 2040 Fund - Premier Class                        
Prospectus Line Items                        
Management Fees (as a percentage of Assets) [22],[23] 0.37%                      
Distribution and Service (12b-1) Fees 0.00%                      
Other Expenses (as a percentage of Assets): 0.00%                      
Expenses (as a percentage of Assets) [23] 0.37%                      
Expense Example, with Redemption, 1 Year $ 38                      
Expense Example, with Redemption, 3 Years 119                      
Expense Example, with Redemption, 5 Years 208                      
Expense Example, with Redemption, 10 Years $ 468                      
Average Annual Return, Label [Optional Text]   Return Before Taxes                    
Average Annual Return, Percent   22.34%                 9.83% 10.69% [24]
Annual Return [Percent]     22.34% 13.61% 20.26% (18.06%) 16.70% 18.53% 25.70% (8.75%)    
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2040 Fund                        
Prospectus Line Items                        
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity Freedom® 2040 Fund /Premier                        
Objective [Heading] Investment Objective                      
Objective, Primary [Text Block] Fidelity Freedom® 2040 Fund seeks high total return until its target retirement date. Thereafter the fund's objective will be to seek high current income and, as a                      
Objective, Secondary [Text Block] secondary objective, capital appreciation.                      
Expense Heading [Optional Text] Fee Table                      
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                      
Shareholder Fees Caption [Optional Text] Shareholder fees                      
Shareholder Fee, Other $ 0                      
Operating Expenses Caption [Optional Text] Annual Operating Expenses                      
Portfolio Turnover [Heading] Portfolio Turnover                      
Portfolio Turnover [Text Block] The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity ® funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 20 % of the average value of its portfolio.                      
Portfolio Turnover, Rate 20.00%                      
Expenses Restated to Reflect Current [Text] Adjusted to reflect current fees.                      
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                      
Strategy [Heading] Principal Investment Strategies                      
Strategy Narrative [Text Block] Investing primarily in a combination of Fidelity® U.S. equity funds, international equity funds, bond funds, and short-term funds (underlying Fidelity® funds). Allocating assets according to a neutral asset allocation strategy shown in the glide path below that adjusts over time until it reaches an allocation similar to that of the Fidelity Freedom® Retirement Fund, approximately 10 to 19 years after the year 2040. Fidelity Management & Research Company LLC (FMR) (the Adviser) may modify the fund's neutral asset allocations from time to time when in the interests of shareholders. A revised neutral asset allocation strategy for the fund is expected to take effect by the end of the first quarter of 2027, as illustrated in the following chart. During the fourth quarter of 2025, the Adviser will begin transitioning the neutral asset allocation percentages to achieve the desired allocations.     The neutral asset allocation shown in the glide path depicts the allocation to U.S. equity funds (including commodity funds), international equity funds, bond funds (including U.S. investment grade bond, international bond, short-term inflation-protected bond, long-term inflation-protected bond, and long-term treasury bond funds), and short-term funds. Buying and selling futures contracts (both long and short positions) in an effort to manage cash flows efficiently, remain fully invested, or facilitate asset allocation. The Adviser, under normal market conditions, will make investments that are consistent with seeking high total return for several years beyond the fund's target retirement date in an effort to achieve the fund's overall investment objective. The Adviser, under normal market conditions, will use an active asset allocation strategy to increase or decrease asset class exposures relative to the neutral asset allocations reflected above by up to 10% for equity funds (including commodity funds), bond funds and short-term funds to reflect the Adviser's market outlook, which is primarily focused on the intermediate term. The asset allocations in the glide path above are referred to as neutral because they do not reflect any decisions made by the Adviser to overweight or underweight an asset class. The Adviser may also make active asset allocations within other asset classes (such as high yield debt (also referred to as junk bonds), floating rate debt, real estate debt, and emerging markets debt) from 0% to 10% of the fund's total assets individually, but no more than 25% in aggregate within those other asset classes. Such asset classes are not reflected in the neutral asset allocations reflected in the glide path above. Emerging markets include countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets that the Adviser identifies as having similar emerging markets characteristics. Designed for investors who anticipate retiring in or within a few years of 2040 (target retirement date) at or around age 65. When the neutral asset allocation of a fund matches Fidelity Freedom® Retirement Fund's neutral asset allocation (approximately 10 to 19 years after the year indicated in the fund's name), the Board of Trustees may combine the fund with Fidelity Freedom® Retirement Fund, without shareholder approval, and the fund's shareholders will become shareholders of Fidelity Freedom® Retirement Fund.                      
Bar Chart and Performance Table [Heading] Performance                      
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time. The hypothetical composite of market indexes has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)   for more recent performance information. Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time.                      
Performance One Year or Less [Text] Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Availability Website Address [Text] www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)                        
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                      
Bar Chart [Heading] Year-by-Year Returns                      
Annual Return, Inception Date Jun. 07, 2017                      
Bar Chart, Returns for Class Not Offered in Prospectus [Text] * The returns shown above are for Class K6, a class of shares of the fund that is not offered through this prospectus. Premier Class   would have substantially similar annual returns to Class K6 because the classes are invested in the same portfolio of securities. Premier Class's   returns would differ from Class K6's returns only to the extent that the classes do not have the same expenses.                      
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                      
Highest Quarterly Return, Date Jun. 30, 2020                      
Highest Quarterly Return 19.23%                      
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                      
Lowest Quarterly Return, Date Mar. 31, 2020                      
Lowest Quarterly Return (20.66%)                      
Performance Table Heading Average Annual Returns                      
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.                      
Performance Table Not Relevant to Tax Deferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                      
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2040 Fund | After Taxes on Distributions | Fidelity Freedom 2040 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                    
Average Annual Return, Percent   20.39%                 7.88% 8.75% [24]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2040 Fund | After Taxes on Distributions and Sales | Fidelity Freedom 2040 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                    
Average Annual Return, Percent   13.84%                 7.19% 8.03% [24]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2040 Fund | SP001                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   S&P 500® Index                    
Average Annual Return, Percent   17.88%                 14.42% 14.71%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2040 Fund | F0270                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Fidelity Freedom 2040 Composite Index℠                    
Average Annual Return, Percent   19.93%                 9.14% 10.38%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2045 Fund | Fidelity Freedom 2045 Fund - Premier Class                        
Prospectus Line Items                        
Management Fees (as a percentage of Assets) [25],[26] 0.37%                      
Distribution and Service (12b-1) Fees 0.00%                      
Other Expenses (as a percentage of Assets): 0.00%                      
Expenses (as a percentage of Assets) [26] 0.37%                      
Expense Example, with Redemption, 1 Year $ 38                      
Expense Example, with Redemption, 3 Years 119                      
Expense Example, with Redemption, 5 Years 208                      
Expense Example, with Redemption, 10 Years $ 468                      
Average Annual Return, Label [Optional Text]   Return Before Taxes                    
Average Annual Return, Percent   24.07%                 10.41% 11.02% [27]
Annual Return [Percent]     24.07% 14.40% 20.91% (18.12%) 16.78% 18.46% 25.76% (8.74%)    
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2045 Fund                        
Prospectus Line Items                        
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity Freedom® 2045 Fund /Premier                        
Objective [Heading] Investment Objective                      
Objective, Primary [Text Block] Fidelity Freedom® 2045 Fund seeks high total return until its target retirement date. Thereafter the fund's objective will be to seek high current income and, as a                      
Objective, Secondary [Text Block] secondary objective, capital appreciation.                      
Expense Heading [Optional Text] Fee Table                      
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                      
Shareholder Fees Caption [Optional Text] Shareholder fees                      
Shareholder Fee, Other $ 0                      
Operating Expenses Caption [Optional Text] Annual Operating Expenses                      
Portfolio Turnover [Heading] Portfolio Turnover                      
Portfolio Turnover [Text Block] The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity ® funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 18 % of the average value of its portfolio.                      
Portfolio Turnover, Rate 18.00%                      
Expenses Restated to Reflect Current [Text] Adjusted to reflect current fees.                      
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                      
Strategy [Heading] Principal Investment Strategies                      
Strategy Narrative [Text Block] Investing primarily in a combination of Fidelity® U.S. equity funds, international equity funds, bond funds, and short-term funds (underlying Fidelity® funds). Allocating assets according to a neutral asset allocation strategy shown in the glide path below that adjusts over time until it reaches an allocation similar to that of the Fidelity Freedom® Retirement Fund, approximately 10 to 19 years after the year 2045. Fidelity Management & Research Company LLC (FMR) (the Adviser) may modify the fund's neutral asset allocations from time to time when in the interests of shareholders. A revised neutral asset allocation strategy for the fund is expected to take effect by the end of the first quarter of 2027, as illustrated in the following chart. During the fourth quarter of 2025, the Adviser will begin transitioning the neutral asset allocation percentages to achieve the desired allocations.     The neutral asset allocation shown in the glide path depicts the allocation to U.S. equity funds (including commodity funds), international equity funds, bond funds (including U.S. investment grade bond, international bond, short-term inflation-protected bond, long-term inflation-protected bond, and long-term treasury bond funds), and short-term funds. Buying and selling futures contracts (both long and short positions) in an effort to manage cash flows efficiently, remain fully invested, or facilitate asset allocation. The Adviser, under normal market conditions, will make investments that are consistent with seeking high total return for several years beyond the fund's target retirement date in an effort to achieve the fund's overall investment objective. The Adviser, under normal market conditions, will use an active asset allocation strategy to increase or decrease asset class exposures relative to the neutral asset allocations reflected above by up to 10% for equity funds (including commodity funds), bond funds and short-term funds to reflect the Adviser's market outlook, which is primarily focused on the intermediate term. The asset allocations in the glide path above are referred to as neutral because they do not reflect any decisions made by the Adviser to overweight or underweight an asset class. The Adviser may also make active asset allocations within other asset classes (such as high yield debt (also referred to as junk bonds), floating rate debt, real estate debt, and emerging markets debt) from 0% to 10% of the fund's total assets individually, but no more than 25% in aggregate within those other asset classes. Such asset classes are not reflected in the neutral asset allocations reflected in the glide path above. Emerging markets include countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets that the Adviser identifies as having similar emerging markets characteristics. Designed for investors who anticipate retiring in or within a few years of 2045 (target retirement date) at or around age 65. When the neutral asset allocation of a fund matches Fidelity Freedom® Retirement Fund's neutral asset allocation (approximately 10 to 19 years after the year indicated in the fund's name), the Board of Trustees may combine the fund with Fidelity Freedom® Retirement Fund, without shareholder approval, and the fund's shareholders will become shareholders of Fidelity Freedom® Retirement Fund.                      
Bar Chart and Performance Table [Heading] Performance                      
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time. The hypothetical composite of market indexes has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)   for more recent performance information. Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time.                      
Performance One Year or Less [Text] Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Availability Website Address [Text] www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)                        
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                      
Bar Chart [Heading] Year-by-Year Returns                      
Annual Return, Inception Date Jun. 07, 2017                      
Bar Chart, Returns for Class Not Offered in Prospectus [Text] * The returns shown above are for Class K6, a class of shares of the fund that is not offered through this prospectus. Premier Class   would have substantially similar annual returns to Class K6 because the classes are invested in the same portfolio of securities. Premier Class's   returns would differ from Class K6's returns only to the extent that the classes do not have the same expenses.                      
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                      
Highest Quarterly Return, Date Jun. 30, 2020                      
Highest Quarterly Return 19.16%                      
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                      
Lowest Quarterly Return, Date Mar. 31, 2020                      
Lowest Quarterly Return (20.68%)                      
Performance Table Heading Average Annual Returns                      
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.                      
Performance Table Not Relevant to Tax Deferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                      
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2045 Fund | After Taxes on Distributions | Fidelity Freedom 2045 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                    
Average Annual Return, Percent   22.29%                 8.54% 9.17% [27]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2045 Fund | After Taxes on Distributions and Sales | Fidelity Freedom 2045 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                    
Average Annual Return, Percent   14.76%                 7.66% 8.33% [27]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2045 Fund | SP001                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   S&P 500® Index                    
Average Annual Return, Percent   17.88%                 14.42% 14.71%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2045 Fund | F0390                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Fidelity Freedom 2045 Composite Index℠                    
Average Annual Return, Percent   21.40%                 9.66% 10.69%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2050 Fund | Fidelity Freedom 2050 Fund - Premier Class                        
Prospectus Line Items                        
Management Fees (as a percentage of Assets) [28],[29] 0.37%                      
Distribution and Service (12b-1) Fees 0.00%                      
Other Expenses (as a percentage of Assets): 0.00%                      
Expenses (as a percentage of Assets) [29] 0.37%                      
Expense Example, with Redemption, 1 Year $ 38                      
Expense Example, with Redemption, 3 Years 119                      
Expense Example, with Redemption, 5 Years 208                      
Expense Example, with Redemption, 10 Years $ 468                      
Average Annual Return, Label [Optional Text]   Return Before Taxes                    
Average Annual Return, Percent   24.05%                 10.42% 11.02% [30]
Annual Return [Percent]     24.05% 14.44% 20.87% (18.10%) 16.79% 18.48% 25.65% (8.74%)    
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2050 Fund                        
Prospectus Line Items                        
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity Freedom® 2050 Fund /Premier                        
Objective [Heading] Investment Objective                      
Objective, Primary [Text Block] Fidelity Freedom® 2050 Fund seeks high total return until its target retirement date. Thereafter the fund's objective will be to seek high current income and, as a                      
Objective, Secondary [Text Block] secondary objective, capital appreciation.                      
Expense Heading [Optional Text] Fee Table                      
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                      
Shareholder Fees Caption [Optional Text] Shareholder fees                      
Shareholder Fee, Other $ 0                      
Operating Expenses Caption [Optional Text] Annual Operating Expenses                      
Portfolio Turnover [Heading] Portfolio Turnover                      
Portfolio Turnover [Text Block] The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity ® funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 19 % of the average value of its portfolio.                      
Portfolio Turnover, Rate 19.00%                      
Expenses Restated to Reflect Current [Text] Adjusted to reflect current fees.                      
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                      
Strategy [Heading] Principal Investment Strategies                      
Strategy Narrative [Text Block] Investing primarily in a combination of Fidelity® U.S. equity funds, international equity funds, bond funds, and short-term funds (underlying Fidelity® funds). Allocating assets according to a neutral asset allocation strategy shown in the glide path below that adjusts over time until it reaches an allocation similar to that of the Fidelity Freedom® Retirement Fund, approximately 10 to 19 years after the year 2050. Fidelity Management & Research Company LLC (FMR) (the Adviser) may modify the fund's neutral asset allocations from time to time when in the interests of shareholders. A revised neutral asset allocation strategy for the fund is expected to take effect by the end of the first quarter of 2027, as illustrated in the following chart. During the fourth quarter of 2025, the Adviser will begin transitioning the neutral asset allocation percentages to achieve the desired allocations.     The neutral asset allocation shown in the glide path depicts the allocation to U.S. equity funds (including commodity funds), international equity funds, bond funds (including U.S. investment grade bond, international bond, short-term inflation-protected bond, long-term inflation-protected bond, and long-term treasury bond funds), and short-term funds. Buying and selling futures contracts (both long and short positions) in an effort to manage cash flows efficiently, remain fully invested, or facilitate asset allocation. The Adviser, under normal market conditions, will make investments that are consistent with seeking high total return for several years beyond the fund's target retirement date in an effort to achieve the fund's overall investment objective. The Adviser, under normal market conditions, will use an active asset allocation strategy to increase or decrease asset class exposures relative to the neutral asset allocations reflected above by up to 10% for equity funds (including commodity funds), bond funds and short-term funds to reflect the Adviser's market outlook, which is primarily focused on the intermediate term. The asset allocations in the glide path above are referred to as neutral because they do not reflect any decisions made by the Adviser to overweight or underweight an asset class. The Adviser may also make active asset allocations within other asset classes (such as high yield debt (also referred to as junk bonds), floating rate debt, real estate debt, and emerging markets debt) from 0% to 10% of the fund's total assets individually, but no more than 25% in aggregate within those other asset classes. Such asset classes are not reflected in the neutral asset allocations reflected in the glide path above. Emerging markets include countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets that the Adviser identifies as having similar emerging markets characteristics. Designed for investors who anticipate retiring in or within a few years of 2050 (target retirement date) at or around age 65. When the neutral asset allocation of a fund matches Fidelity Freedom® Retirement Fund's neutral asset allocation (approximately 10 to 19 years after the year indicated in the fund's name), the Board of Trustees may combine the fund with Fidelity Freedom® Retirement Fund, without shareholder approval, and the fund's shareholders will become shareholders of Fidelity Freedom® Retirement Fund.                      
Bar Chart and Performance Table [Heading] Performance                      
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time. The hypothetical composite of market indexes has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)   for more recent performance information. Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time.                      
Performance One Year or Less [Text] Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Availability Website Address [Text] www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)                        
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                      
Bar Chart [Heading] Year-by-Year Returns                      
Annual Return, Inception Date Jun. 07, 2017                      
Bar Chart, Returns for Class Not Offered in Prospectus [Text] * The returns shown above are for Class K6, a class of shares of the fund that is not offered through this prospectus. Premier Class   would have substantially similar annual returns to Class K6 because the classes are invested in the same portfolio of securities. Premier Class's   returns would differ from Class K6's returns only to the extent that the classes do not have the same expenses.                      
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                      
Highest Quarterly Return, Date Jun. 30, 2020                      
Highest Quarterly Return 19.16%                      
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                      
Lowest Quarterly Return, Date Mar. 31, 2020                      
Lowest Quarterly Return (20.61%)                      
Performance Table Heading Average Annual Returns                      
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.                      
Performance Table Not Relevant to Tax Deferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                      
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2050 Fund | After Taxes on Distributions | Fidelity Freedom 2050 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                    
Average Annual Return, Percent   22.36%                 8.59% 9.21% [30]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2050 Fund | After Taxes on Distributions and Sales | Fidelity Freedom 2050 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                    
Average Annual Return, Percent   14.71%                 7.68% 8.35% [30]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2050 Fund | SP001                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   S&P 500® Index                    
Average Annual Return, Percent   17.88%                 14.42% 14.71%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2050 Fund | F0391                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Fidelity Freedom 2050 Composite Index℠                    
Average Annual Return, Percent   21.41%                 9.66% 10.69%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2055 Fund | Fidelity Freedom 2055 Fund - Premier Class                        
Prospectus Line Items                        
Management Fees (as a percentage of Assets) [31],[32] 0.37%                      
Distribution and Service (12b-1) Fees 0.00%                      
Other Expenses (as a percentage of Assets): 0.00%                      
Expenses (as a percentage of Assets) [32] 0.37%                      
Expense Example, with Redemption, 1 Year $ 38                      
Expense Example, with Redemption, 3 Years 119                      
Expense Example, with Redemption, 5 Years 208                      
Expense Example, with Redemption, 10 Years $ 468                      
Average Annual Return, Label [Optional Text]   Return Before Taxes                    
Average Annual Return, Percent   24.06%                 10.42% 11.03% [33]
Annual Return [Percent]     24.06% 14.43% 20.85% (18.07%) 16.77% 18.46% 25.67% (8.68%)    
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2055 Fund                        
Prospectus Line Items                        
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity Freedom® 2055 Fund /Premier                        
Objective [Heading] Investment Objective                      
Objective, Primary [Text Block] Fidelity Freedom® 2055 Fund seeks high total return until its target retirement date. Thereafter the fund's objective will be to seek high current income and, as a                      
Objective, Secondary [Text Block] secondary objective, capital appreciation.                      
Expense Heading [Optional Text] Fee Table                      
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                      
Shareholder Fees Caption [Optional Text] Shareholder fees                      
Shareholder Fee, Other $ 0                      
Operating Expenses Caption [Optional Text] Annual Operating Expenses                      
Portfolio Turnover [Heading] Portfolio Turnover                      
Portfolio Turnover [Text Block] The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity ® funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 18 % of the average value of its portfolio.                      
Portfolio Turnover, Rate 18.00%                      
Expenses Restated to Reflect Current [Text] Adjusted to reflect current fees.                      
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                      
Strategy [Heading] Principal Investment Strategies                      
Strategy Narrative [Text Block] Investing primarily in a combination of Fidelity® U.S. equity funds, international equity funds, bond funds, and short-term funds (underlying Fidelity® funds). Allocating assets according to a neutral asset allocation strategy shown in the glide path below that adjusts over time until it reaches an allocation similar to that of the Fidelity Freedom® Retirement Fund, approximately 10 to 19 years after the year 2055. Fidelity Management & Research Company LLC (FMR) (the Adviser) may modify the fund's neutral asset allocations from time to time when in the interests of shareholders. A revised neutral asset allocation strategy for the fund is expected to take effect by the end of the first quarter of 2027, as illustrated in the following chart. During the fourth quarter of 2025, the Adviser will begin transitioning the neutral asset allocation percentages to achieve the desired allocations.     The neutral asset allocation shown in the glide path depicts the allocation to U.S. equity funds (including commodity funds), international equity funds, bond funds (including U.S. investment grade bond, international bond, short-term inflation-protected bond, long-term inflation-protected bond, and long-term treasury bond funds), and short-term funds. Buying and selling futures contracts (both long and short positions) in an effort to manage cash flows efficiently, remain fully invested, or facilitate asset allocation. The Adviser, under normal market conditions, will make investments that are consistent with seeking high total return for several years beyond the fund's target retirement date in an effort to achieve the fund's overall investment objective. The Adviser, under normal market conditions, will use an active asset allocation strategy to increase or decrease asset class exposures relative to the neutral asset allocations reflected above by up to 10% for equity funds (including commodity funds), bond funds and short-term funds to reflect the Adviser's market outlook, which is primarily focused on the intermediate term. The asset allocations in the glide path above are referred to as neutral because they do not reflect any decisions made by the Adviser to overweight or underweight an asset class. The Adviser may also make active asset allocations within other asset classes (such as high yield debt (also referred to as junk bonds), floating rate debt, real estate debt, and emerging markets debt) from 0% to 10% of the fund's total assets individually, but no more than 25% in aggregate within those other asset classes. Such asset classes are not reflected in the neutral asset allocations reflected in the glide path above. Emerging markets include countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets that the Adviser identifies as having similar emerging markets characteristics. Designed for investors who anticipate retiring in or within a few years of 2055 (target retirement date) at or around age 65. When the neutral asset allocation of a fund matches Fidelity Freedom® Retirement Fund's neutral asset allocation (approximately 10 to 19 years after the year indicated in the fund's name), the Board of Trustees may combine the fund with Fidelity Freedom® Retirement Fund, without shareholder approval, and the fund's shareholders will become shareholders of Fidelity Freedom® Retirement Fund.                      
Bar Chart and Performance Table [Heading] Performance                      
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time. The hypothetical composite of market indexes has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)   for more recent performance information. Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time.                      
Performance One Year or Less [Text] Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Availability Website Address [Text] www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)                        
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                      
Bar Chart [Heading] Year-by-Year Returns                      
Annual Return, Inception Date Jun. 07, 2017                      
Bar Chart, Returns for Class Not Offered in Prospectus [Text] * The returns shown above are for Class K6, a class of shares of the fund that is not offered through this prospectus. Premier Class   would have substantially similar annual returns to Class K6 because the classes are invested in the same portfolio of securities. Premier Class's   returns would differ from Class K6's returns only to the extent that the classes do not have the same expenses.                      
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                      
Highest Quarterly Return, Date Jun. 30, 2020                      
Highest Quarterly Return 19.23%                      
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                      
Lowest Quarterly Return, Date Mar. 31, 2020                      
Lowest Quarterly Return (20.68%)                      
Performance Table Heading Average Annual Returns                      
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.                      
Performance Table Not Relevant to Tax Deferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                      
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2055 Fund | After Taxes on Distributions | Fidelity Freedom 2055 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                    
Average Annual Return, Percent   22.44%                 8.65% 9.31% [33]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2055 Fund | After Taxes on Distributions and Sales | Fidelity Freedom 2055 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                    
Average Annual Return, Percent   14.66%                 7.70% 8.39% [33]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2055 Fund | SP001                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   S&P 500® Index                    
Average Annual Return, Percent   17.88%                 14.42% 14.71%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2055 Fund | F1682                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Fidelity Freedom 2055 Composite Index℠                    
Average Annual Return, Percent   21.42%                 9.67% 10.69%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2060 Fund | Fidelity Freedom 2060 Fund - Premier Class                        
Prospectus Line Items                        
Management Fees (as a percentage of Assets) [34],[35] 0.37%                      
Distribution and Service (12b-1) Fees 0.00%                      
Other Expenses (as a percentage of Assets): 0.00%                      
Expenses (as a percentage of Assets) [35] 0.37%                      
Expense Example, with Redemption, 1 Year $ 38                      
Expense Example, with Redemption, 3 Years 119                      
Expense Example, with Redemption, 5 Years 208                      
Expense Example, with Redemption, 10 Years $ 468                      
Average Annual Return, Label [Optional Text]   Return Before Taxes                    
Average Annual Return, Percent   24.13%                 10.41% 11.03% [36]
Annual Return [Percent]     24.13% 14.39% 20.87% (18.09%) 16.71% 18.53% 25.60% (8.69%)    
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2060 Fund                        
Prospectus Line Items                        
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity Freedom® 2060 Fund /Premier                        
Objective [Heading] Investment Objective                      
Objective, Primary [Text Block] Fidelity Freedom® 2060 Fund seeks high total return until its target retirement date. Thereafter the fund's objective will be to seek high current income and, as a                      
Objective, Secondary [Text Block] secondary objective, capital appreciation.                      
Expense Heading [Optional Text] Fee Table                      
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                      
Shareholder Fees Caption [Optional Text] Shareholder fees                      
Shareholder Fee, Other $ 0                      
Operating Expenses Caption [Optional Text] Annual Operating Expenses                      
Portfolio Turnover [Heading] Portfolio Turnover                      
Portfolio Turnover [Text Block] The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity ® funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 18 % of the average value of its portfolio.                      
Portfolio Turnover, Rate 18.00%                      
Expenses Restated to Reflect Current [Text] Adjusted to reflect current fees.                      
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                      
Strategy [Heading] Principal Investment Strategies                      
Strategy Narrative [Text Block] Investing primarily in a combination of Fidelity® U.S. equity funds, international equity funds, bond funds, and short-term funds (underlying Fidelity® funds). Allocating assets according to a neutral asset allocation strategy shown in the glide path below that adjusts over time until it reaches an allocation similar to that of the Fidelity Freedom® Retirement Fund, approximately 10 to 19 years after the year 2060. Fidelity Management & Research Company LLC (FMR) (the Adviser) may modify the fund's neutral asset allocations from time to time when in the interests of shareholders. A revised neutral asset allocation strategy for the fund is expected to take effect by the end of the first quarter of 2027, as illustrated in the following chart. During the fourth quarter of 2025, the Adviser will begin transitioning the neutral asset allocation percentages to achieve the desired allocations.     The neutral asset allocation shown in the glide path depicts the allocation to U.S. equity funds (including commodity funds), international equity funds, bond funds (including U.S. investment grade bond, international bond, short-term inflation-protected bond, long-term inflation-protected bond, and long-term treasury bond funds), and short-term funds. Buying and selling futures contracts (both long and short positions) in an effort to manage cash flows efficiently, remain fully invested, or facilitate asset allocation. The Adviser, under normal market conditions, will make investments that are consistent with seeking high total return for several years beyond the fund's target retirement date in an effort to achieve the fund's overall investment objective. The Adviser, under normal market conditions, will use an active asset allocation strategy to increase or decrease asset class exposures relative to the neutral asset allocations reflected above by up to 10% for equity funds (including commodity funds), bond funds and short-term funds to reflect the Adviser's market outlook, which is primarily focused on the intermediate term. The asset allocations in the glide path above are referred to as neutral because they do not reflect any decisions made by the Adviser to overweight or underweight an asset class. The Adviser may also make active asset allocations within other asset classes (such as high yield debt (also referred to as junk bonds), floating rate debt, real estate debt, and emerging markets debt) from 0% to 10% of the fund's total assets individually, but no more than 25% in aggregate within those other asset classes. Such asset classes are not reflected in the neutral asset allocations reflected in the glide path above. Emerging markets include countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets that the Adviser identifies as having similar emerging markets characteristics. Designed for investors who anticipate retiring in or within a few years of 2060 (target retirement date) at or around age 65. When the neutral asset allocation of a fund matches Fidelity Freedom® Retirement Fund's neutral asset allocation (approximately 10 to 19 years after the year indicated in the fund's name), the Board of Trustees may combine the fund with Fidelity Freedom® Retirement Fund, without shareholder approval, and the fund's shareholders will become shareholders of Fidelity Freedom® Retirement Fund.                      
Bar Chart and Performance Table [Heading] Performance                      
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time. The hypothetical composite of market indexes has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)   for more recent performance information. Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time.                      
Performance One Year or Less [Text] Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Availability Website Address [Text] www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)                        
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                      
Bar Chart [Heading] Year-by-Year Returns                      
Annual Return, Inception Date Jun. 07, 2017                      
Bar Chart, Returns for Class Not Offered in Prospectus [Text] * The returns shown above are for Class K6, a class of shares of the fund that is not offered through this prospectus. Premier Class   would have substantially similar annual returns to Class K6 because the classes are invested in the same portfolio of securities. Premier Class's   returns would differ from Class K6's returns only to the extent that the classes do not have the same expenses.                      
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                      
Highest Quarterly Return, Date Jun. 30, 2020                      
Highest Quarterly Return 19.27%                      
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                      
Lowest Quarterly Return, Date Mar. 31, 2020                      
Lowest Quarterly Return (20.69%)                      
Performance Table Heading Average Annual Returns                      
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.                      
Performance Table Not Relevant to Tax Deferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                      
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2060 Fund | After Taxes on Distributions | Fidelity Freedom 2060 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                    
Average Annual Return, Percent   22.57%                 8.73% 9.41% [36]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2060 Fund | After Taxes on Distributions and Sales | Fidelity Freedom 2060 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                    
Average Annual Return, Percent   14.67%                 7.72% 8.43% [36]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2060 Fund | SP001                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   S&P 500® Index                    
Average Annual Return, Percent   17.88%                 14.42% 14.71%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2060 Fund | F1032                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Fidelity Freedom 2060 Composite Index℠                    
Average Annual Return, Percent   21.42%                 9.67% 10.69%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2065 Fund | Fidelity Freedom 2065 Fund - Premier Class                        
Prospectus Line Items                        
Management Fees (as a percentage of Assets) [37],[38] 0.37%                      
Distribution and Service (12b-1) Fees 0.00%                      
Other Expenses (as a percentage of Assets): 0.00%                      
Expenses (as a percentage of Assets) [38] 0.37%                      
Expense Example, with Redemption, 1 Year $ 38                      
Expense Example, with Redemption, 3 Years 119                      
Expense Example, with Redemption, 5 Years 208                      
Expense Example, with Redemption, 10 Years $ 468                      
Average Annual Return, Label [Optional Text]   Return Before Taxes                    
Average Annual Return, Percent   24.08%                 10.41% 12.26% [39]
Annual Return [Percent]     24.08% 14.43% 20.78% (18.04%) 16.75% 18.33%        
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2065 Fund                        
Prospectus Line Items                        
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity Freedom® 2065 Fund /Premier                        
Objective [Heading] Investment Objective                      
Objective, Primary [Text Block] Fidelity Freedom® 2065 Fund seeks high total return until its target retirement date. Thereafter the fund's objective will be to seek high current income and, as a                      
Objective, Secondary [Text Block] secondary objective, capital appreciation.                      
Expense Heading [Optional Text] Fee Table                      
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                      
Shareholder Fees Caption [Optional Text] Shareholder fees                      
Shareholder Fee, Other $ 0                      
Operating Expenses Caption [Optional Text] Annual Operating Expenses                      
Portfolio Turnover [Heading] Portfolio Turnover                      
Portfolio Turnover [Text Block] The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity ® funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 16 % of the average value of its portfolio.                      
Portfolio Turnover, Rate 16.00%                      
Expenses Restated to Reflect Current [Text] Adjusted to reflect current fees.                      
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                      
Strategy [Heading] Principal Investment Strategies                      
Strategy Narrative [Text Block] Investing primarily in a combination of Fidelity® U.S. equity funds, international equity funds, bond funds, and short-term funds (underlying Fidelity® funds). Allocating assets according to a neutral asset allocation strategy shown in the glide path below that adjusts over time until it reaches an allocation similar to that of the Fidelity Freedom® Retirement Fund, approximately 10 to 19 years after the year 2065. Fidelity Management & Research Company LLC (FMR) (the Adviser) may modify the fund's neutral asset allocations from time to time when in the interests of shareholders. A revised neutral asset allocation strategy for the fund is expected to take effect by the end of the first quarter of 2027, as illustrated in the following chart. During the fourth quarter of 2025, the Adviser will begin transitioning the neutral asset allocation percentages to achieve the desired allocations.     The neutral asset allocation shown in the glide path depicts the allocation to U.S. equity funds (including commodity funds), international equity funds, bond funds (including U.S. investment grade bond, international bond, short-term inflation-protected bond, long-term inflation-protected bond, and long-term treasury bond funds), and short-term funds. Buying and selling futures contracts (both long and short positions) in an effort to manage cash flows efficiently, remain fully invested, or facilitate asset allocation. The Adviser, under normal market conditions, will make investments that are consistent with seeking high total return for several years beyond the fund's target retirement date in an effort to achieve the fund's overall investment objective. The Adviser, under normal market conditions, will use an active asset allocation strategy to increase or decrease asset class exposures relative to the neutral asset allocations reflected above by up to 10% for equity funds (including commodity funds), bond funds and short-term funds to reflect the Adviser's market outlook, which is primarily focused on the intermediate term. The asset allocations in the glide path above are referred to as neutral because they do not reflect any decisions made by the Adviser to overweight or underweight an asset class. The Adviser may also make active asset allocations within other asset classes (such as high yield debt (also referred to as junk bonds), floating rate debt, real estate debt, and emerging markets debt) from 0% to 10% of the fund's total assets individually, but no more than 25% in aggregate within those other asset classes. Such asset classes are not reflected in the neutral asset allocations reflected in the glide path above. Emerging markets include countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets that the Adviser identifies as having similar emerging markets characteristics. Designed for investors who anticipate retiring in or within a few years of 2065 (target retirement date) at or around age 65. When the neutral asset allocation of a fund matches Fidelity Freedom® Retirement Fund's neutral asset allocation (approximately 10 to 19 years after the year indicated in the fund's name), the Board of Trustees may combine the fund with Fidelity Freedom® Retirement Fund, without shareholder approval, and the fund's shareholders will become shareholders of Fidelity Freedom® Retirement Fund.                      
Bar Chart and Performance Table [Heading] Performance                      
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time. The hypothetical composite of market indexes has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)   for more recent performance information. Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time.                      
Performance One Year or Less [Text] Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Availability Website Address [Text] www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)                        
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                      
Bar Chart [Heading] Year-by-Year Returns                      
Annual Return, Inception Date Jun. 28, 2019                      
Bar Chart, Returns for Class Not Offered in Prospectus [Text] * The returns shown above are for Class K6, a class of shares of the fund that is not offered through this prospectus. Premier Class   would have substantially similar annual returns to Class K6 because the classes are invested in the same portfolio of securities. Premier Class's   returns would differ from Class K6's returns only to the extent that the classes do not have the same expenses.                      
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                      
Highest Quarterly Return, Date Jun. 30, 2020                      
Highest Quarterly Return 19.15%                      
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                      
Lowest Quarterly Return, Date Mar. 31, 2020                      
Lowest Quarterly Return (20.72%)                      
Performance Table Heading Average Annual Returns                      
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.                      
Performance Table Not Relevant to Tax Deferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                      
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2065 Fund | After Taxes on Distributions | Fidelity Freedom 2065 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                    
Average Annual Return, Percent   22.54%                 8.92% 10.91% [39]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2065 Fund | After Taxes on Distributions and Sales | Fidelity Freedom 2065 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                    
Average Annual Return, Percent   14.63%                 7.79% 9.48% [39]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2065 Fund | SP001                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   S&P 500® Index                    
Average Annual Return, Percent   17.88%                 14.42% 15.67%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2065 Fund | IXX3K                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Fidelity Freedom 2065 Composite Index℠                    
Average Annual Return, Percent   21.42%                 9.67% 11.32%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2070 Fund | Fidelity Freedom 2070 Fund - Premier Class                        
Prospectus Line Items                        
Management Fees (as a percentage of Assets) [40],[41] 0.37%                      
Distribution and Service (12b-1) Fees 0.00%                      
Other Expenses (as a percentage of Assets): 0.00%                      
Expenses (as a percentage of Assets) [41] 0.37%                      
Expense Example, with Redemption, 1 Year $ 38                      
Expense Example, with Redemption, 3 Years 119                      
Expense Example, with Redemption, 5 Years 208                      
Expense Example, with Redemption, 10 Years $ 468                      
Average Annual Return, Label [Optional Text]   Return Before Taxes                    
Average Annual Return, Percent   23.66%                   17.98% [42]
Annual Return [Percent]     23.66%                  
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2070 Fund                        
Prospectus Line Items                        
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity Freedom® 2070 Fund /Premier                        
Objective [Heading] Investment Objective                      
Objective, Primary [Text Block] Fidelity Freedom® 2070 Fund seeks high total return until its target retirement date. Thereafter the fund's objective will be to seek high current income and, as a                      
Objective, Secondary [Text Block] secondary objective, capital appreciation.                      
Expense Heading [Optional Text] Fee Table                      
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                      
Shareholder Fees Caption [Optional Text] Shareholder fees                      
Shareholder Fee, Other $ 0                      
Operating Expenses Caption [Optional Text] Annual Operating Expenses                      
Portfolio Turnover [Heading] Portfolio Turnover                      
Portfolio Turnover [Text Block] The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity ® funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance. For the period from June 28, 2024 to March 31, 2025, the fund's portfolio turnover rate was 23 % (annualized) of the average value of its portfolio.                      
Portfolio Turnover, Rate 23.00%                      
Expenses Restated to Reflect Current [Text] Adjusted to reflect current fees.                      
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                      
Strategy [Heading] Principal Investment Strategies                      
Strategy Narrative [Text Block] Investing primarily in a combination of Fidelity® U.S. equity funds, international equity funds, bond funds, and short-term funds (underlying Fidelity® funds). Allocating assets according to a neutral asset allocation strategy shown in the glide path below that adjusts over time until it reaches an allocation similar to that of the Fidelity Freedom® Retirement Fund, approximately 10 to 19 years after the year 2070. Fidelity Management & Research Company LLC (FMR) (the Adviser) may modify the fund's neutral asset allocations from time to time when in the interests of shareholders. A revised neutral asset allocation strategy for the fund is expected to take effect by the end of the first quarter of 2027, as illustrated in the following chart. During the fourth quarter of 2025, the Adviser will begin transitioning the neutral asset allocation percentages to achieve the desired allocations.     The neutral asset allocation shown in the glide path depicts the allocation to U.S. equity funds (including commodity funds), international equity funds, bond funds (including U.S. investment grade bond, international bond, short-term inflation-protected bond, long-term inflation-protected bond, and long-term treasury bond funds), and short-term funds. Buying and selling futures contracts (both long and short positions) in an effort to manage cash flows efficiently, remain fully invested, or facilitate asset allocation. The Adviser, under normal market conditions, will make investments that are consistent with seeking high total return for several years beyond the fund's target retirement date in an effort to achieve the fund's overall investment objective. The Adviser, under normal market conditions, will use an active asset allocation strategy to increase or decrease asset class exposures relative to the neutral asset allocations reflected above by up to 10% for equity funds (including commodity funds), bond funds and short-term funds to reflect the Adviser's market outlook, which is primarily focused on the intermediate term. The asset allocations in the glide path above are referred to as neutral because they do not reflect any decisions made by the Adviser to overweight or underweight an asset class. The Adviser may also make active asset allocations within other asset classes (such as high yield debt (also referred to as junk bonds), floating rate debt, real estate debt, and emerging markets debt) from 0% to 10% of the fund's total assets individually, but no more than 25% in aggregate within those other asset classes. Such asset classes are not reflected in the neutral asset allocations reflected in the glide path above. Emerging markets include countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets that the Adviser identifies as having similar emerging markets characteristics. Designed for investors who anticipate retiring in or within a few years of 2070 (target retirement date) at or around age 65. When the neutral asset allocation of a fund matches Fidelity Freedom® Retirement Fund's neutral asset allocation (approximately 10 to 19 years after the year indicated in the fund's name), the Board of Trustees may combine the fund with Fidelity Freedom® Retirement Fund, without shareholder approval, and the fund's shareholders will become shareholders of Fidelity Freedom® Retirement Fund.                      
Bar Chart and Performance Table [Heading] Performance                      
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time. The hypothetical composite of market indexes has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)   for more recent performance information. Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of Class K6 shares from year to year and compares the performance of Class K6 shares to the performance of a securities market index and a hypothetical composite of market indexes over various periods of time.                      
Performance One Year or Less [Text] Performance history will be available for Premier Class after Premier Class has been in operation for one calendar year.                      
Performance Availability Website Address [Text] www.401k.com and log in (plan accounts) or www.fidelity.com (all other accounts)                        
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                      
Bar Chart [Heading] Year-by-Year Returns                      
Annual Return, Inception Date Jun. 28, 2024                      
Bar Chart, Returns for Class Not Offered in Prospectus [Text] * The returns shown above are for Class K6, a class of shares of the fund that is not offered through this prospectus. Premier Class   would have substantially similar annual returns to Class K6 because the classes are invested in the same portfolio of securities. Premier Class's   returns would differ from Class K6's returns only to the extent that the classes do not have the same expenses.                      
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                      
Highest Quarterly Return, Date Jun. 30, 2025                      
Highest Quarterly Return 11.34%                      
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                      
Lowest Quarterly Return, Date Mar. 31, 2025                      
Lowest Quarterly Return none                      
Performance Table Heading Average Annual Returns                      
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.                      
Performance Table Not Relevant to Tax Deferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                      
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                      
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2070 Fund | After Taxes on Distributions | Fidelity Freedom 2070 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                    
Average Annual Return, Percent   22.56%                   17.06% [42]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2070 Fund | After Taxes on Distributions and Sales | Fidelity Freedom 2070 Fund - Premier Class                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                    
Average Annual Return, Percent   14.16%                   13.56% [42]
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2070 Fund | SP001                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   S&P 500® Index                    
Average Annual Return, Percent   17.88%                   17.78%
FidelityFreedomFunds-PremierComboPRO | Fidelity Freedom 2070 Fund | IXTOF                        
Prospectus Line Items                        
Average Annual Return, Label [Optional Text]   Fidelity Freedom 2070 Composite Index℠                    
Average Annual Return, Percent   21.42%                   17.49%
Document Type 485BPOS                      
Registrant Name Fidelity Aberdeen Street Trust                      
[1]
B The management fee rate is subject to the expense contract arrangements discussed in greater detail in the "Fund Services - Fund Management - Advisory Fee(s)" section of the prospectus and the "Management Contracts - Management-Related Expenses" section of the SAI.
[2]
A Adjusted to reflect current fees.
[3]
From June 7, 2017 .
[4]
B The management fee rate is subject to the expense contract arrangements discussed in greater detail in the "Fund Services - Fund Management - Advisory Fee(s)" section of the prospectus and the "Management Contracts - Management-Related Expenses" section of the SAI.
[5]
A Adjusted to reflect current fees.
[6]
From June 7, 2017 .
[7]
B The management fee rate is subject to the expense contract arrangements discussed in greater detail in the "Fund Services - Fund Management - Advisory Fee(s)" section of the prospectus and the "Management Contracts - Management-Related Expenses" section of the SAI.
[8]
A Adjusted to reflect current fees.
[9]
From June 7, 2017 .
[10]
B The management fee rate is subject to the expense contract arrangements discussed in greater detail in the "Fund Services - Fund Management - Advisory Fee(s)" section of the prospectus and the "Management Contracts - Management-Related Expenses" section of the SAI.
[11]
A Adjusted to reflect current fees.
[12]
From June 7, 2017 .
[13]
B The management fee rate is subject to the expense contract arrangements discussed in greater detail in the "Fund Services - Fund Management - Advisory Fee(s)" section of the prospectus and the "Management Contracts - Management-Related Expenses" section of the SAI.
[14]
A Adjusted to reflect current fees.
[15]
From June 7, 2017 .
[16]
B The management fee rate is subject to the expense contract arrangements discussed in greater detail in the "Fund Services - Fund Management - Advisory Fee(s)" section of the prospectus and the "Management Contracts - Management-Related Expenses" section of the SAI.
[17]
A Adjusted to reflect current fees.
[18]
From June 7, 2017 .
[19]
B The management fee rate is subject to the expense contract arrangements discussed in greater detail in the "Fund Services - Fund Management - Advisory Fee(s)" section of the prospectus and the "Management Contracts - Management-Related Expenses" section of the SAI.
[20]
A Adjusted to reflect current fees.
[21]
From June 7, 2017 .
[22]
B The management fee rate is subject to the expense contract arrangements discussed in greater detail in the "Fund Services - Fund Management - Advisory Fee(s)" section of the prospectus and the "Management Contracts - Management-Related Expenses" section of the SAI.
[23]
A Adjusted to reflect current fees.
[24]
From June 7, 2017 .
[25]
B The management fee rate is subject to the expense contract arrangements discussed in greater detail in the "Fund Services - Fund Management - Advisory Fee(s)" section of the prospectus and the "Management Contracts - Management-Related Expenses" section of the SAI.
[26]
A Adjusted to reflect current fees.
[27]
From June 7, 2017 .
[28]
B The management fee rate is subject to the expense contract arrangements discussed in greater detail in the "Fund Services - Fund Management - Advisory Fee(s)" section of the prospectus and the "Management Contracts - Management-Related Expenses" section of the SAI.
[29]
A Adjusted to reflect current fees.
[30]
From June 7, 2017 .
[31]
B The management fee rate is subject to the expense contract arrangements discussed in greater detail in the "Fund Services - Fund Management - Advisory Fee(s)" section of the prospectus and the "Management Contracts - Management-Related Expenses" section of the SAI.
[32]
A Adjusted to reflect current fees.
[33]
From June 7, 2017 .
[34]
B The management fee rate is subject to the expense contract arrangements discussed in greater detail in the "Fund Services - Fund Management - Advisory Fee(s)" section of the prospectus and the "Management Contracts - Management-Related Expenses" section of the SAI.
[35]
A Adjusted to reflect current fees.
[36]
From June 7, 2017 .
[37]
B The management fee rate is subject to the expense contract arrangements discussed in greater detail in the "Fund Services - Fund Management - Advisory Fee(s)" section of the prospectus and the "Management Contracts - Management-Related Expenses" section of the SAI.
[38]
A Adjusted to reflect current fees.
[39]
From June 28, 2019 .
[40]
B The management fee rate is subject to the expense contract arrangements discussed in greater detail in the "Fund Services - Fund Management - Advisory Fee(s)" section of the prospectus and the "Management Contracts - Management-Related Expenses" section of the SAI.
[41]
A Adjusted to reflect current fees.
[42]
From June 28, 2024 .