v3.26.1
Shareholder Report, Holdings (Details)
Mar. 31, 2026
Fidelity Advisor Freedom Blend 2065 Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.60%
Fidelity Advisor Freedom Blend 2065 Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Freedom Blend 2065 Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Advisor Freedom Blend 2065 Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2065 Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2065 Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2065 Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2065 Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2065 Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
Fidelity Advisor Freedom Blend 2065 Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Freedom Blend 2065 Fund - Class C | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Advisor Freedom Blend 2065 Fund - Class C | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Advisor Freedom Blend 2065 Fund - Class C | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Advisor Freedom Blend 2065 Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2020 Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Advisor Freedom Blend 2020 Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2020 Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2020 Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Advisor Freedom Blend 2020 Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Advisor Freedom Blend 2020 Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2020 Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Advisor Freedom Blend 2020 Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2020 Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Advisor Freedom Blend 2020 Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2020 Fund - Class A | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 26.60%
Fidelity Advisor Freedom Blend 2020 Fund - Class A | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 21.80%
Fidelity Advisor Freedom Blend 2020 Fund - Class A | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 49.20%
Fidelity Advisor Freedom Blend 2020 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2020 Fund - Class A | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Freedom Blend 2060 Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Advisor Freedom Blend 2060 Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Freedom Blend 2060 Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Advisor Freedom Blend 2060 Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2060 Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2060 Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2060 Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2060 Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2060 Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Advisor Freedom Blend 2060 Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Freedom Blend 2060 Fund - Class M | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Advisor Freedom Blend 2060 Fund - Class M | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Advisor Freedom Blend 2060 Fund - Class M | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Advisor Freedom Blend 2060 Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2015 Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
Fidelity Advisor Freedom Blend 2015 Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
Fidelity Advisor Freedom Blend 2015 Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Fidelity Advisor Freedom Blend 2015 Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Freedom Blend 2015 Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Advisor Freedom Blend 2015 Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2015 Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class Z | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.10%
Fidelity Advisor Freedom Blend 2015 Fund - Class Z | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 18.60%
Fidelity Advisor Freedom Blend 2015 Fund - Class Z | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.30%
Fidelity Advisor Freedom Blend 2015 Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2015 Fund - Class Z | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Freedom Blend 2025 Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Freedom Blend 2025 Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
Fidelity Freedom Blend 2025 Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Freedom Blend 2025 Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Freedom Blend 2025 Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Freedom Blend 2025 Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Freedom Blend 2025 Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2025 Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Freedom Blend 2025 Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2025 Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
Fidelity Freedom Blend 2025 Fund | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 31.10%
Fidelity Freedom Blend 2025 Fund | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 25.20%
Fidelity Freedom Blend 2025 Fund | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 43.40%
Fidelity Freedom Blend 2025 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2050 Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
Fidelity Advisor Freedom Blend 2050 Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
Fidelity Advisor Freedom Blend 2050 Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Advisor Freedom Blend 2050 Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2050 Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Advisor Freedom Blend 2050 Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2050 Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Freedom Blend 2050 Fund - Class I | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.00%
Fidelity Advisor Freedom Blend 2050 Fund - Class I | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.80%
Fidelity Advisor Freedom Blend 2050 Fund - Class I | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Advisor Freedom Blend 2050 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2065 Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.60%
Fidelity Advisor Freedom Blend 2065 Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Freedom Blend 2065 Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Advisor Freedom Blend 2065 Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2065 Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2065 Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2065 Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2065 Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2065 Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
Fidelity Advisor Freedom Blend 2065 Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Freedom Blend 2065 Fund - Class A | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Advisor Freedom Blend 2065 Fund - Class A | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Advisor Freedom Blend 2065 Fund - Class A | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Advisor Freedom Blend 2065 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2020 Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Advisor Freedom Blend 2020 Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2020 Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2020 Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Advisor Freedom Blend 2020 Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Advisor Freedom Blend 2020 Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2020 Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Advisor Freedom Blend 2020 Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2020 Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Advisor Freedom Blend 2020 Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2020 Fund - Class C | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 26.60%
Fidelity Advisor Freedom Blend 2020 Fund - Class C | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 21.80%
Fidelity Advisor Freedom Blend 2020 Fund - Class C | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 49.20%
Fidelity Advisor Freedom Blend 2020 Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2020 Fund - Class C | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 14.80%
Fidelity Advisor Freedom Blend 2070 Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.50%
Fidelity Advisor Freedom Blend 2070 Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Advisor Freedom Blend 2070 Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Advisor Freedom Blend 2070 Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Advisor Freedom Blend 2070 Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2070 Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2070 Fund - Class A | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 53.00%
Fidelity Advisor Freedom Blend 2070 Fund - Class A | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 42.30%
Fidelity Advisor Freedom Blend 2070 Fund - Class A | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2070 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Advisor Freedom Blend 2035 Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Advisor Freedom Blend 2035 Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Freedom Blend 2035 Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2035 Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Advisor Freedom Blend 2035 Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class M | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 39.80%
Fidelity Advisor Freedom Blend 2035 Fund - Class M | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 30.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class M | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 28.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2015 Fund - Class K6 | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
Fidelity Freedom Blend 2015 Fund - Class K6 | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
Fidelity Freedom Blend 2015 Fund - Class K6 | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Fidelity Freedom Blend 2015 Fund - Class K6 | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Freedom Blend 2015 Fund - Class K6 | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Freedom Blend 2015 Fund - Class K6 | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Freedom Blend 2015 Fund - Class K6 | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Freedom Blend 2015 Fund - Class K6 | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Freedom Blend 2015 Fund - Class K6 | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2015 Fund - Class K6 | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend 2015 Fund - Class K6 | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.10%
Fidelity Freedom Blend 2015 Fund - Class K6 | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 18.60%
Fidelity Freedom Blend 2015 Fund - Class K6 | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.30%
Fidelity Freedom Blend 2015 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2015 Fund - Class K6 | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Freedom Blend Retirement Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 20.40%
Fidelity Freedom Blend Retirement Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Freedom Blend Retirement Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Fidelity Freedom Blend Retirement Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Freedom Blend Retirement Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend Retirement Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend Retirement Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Freedom Blend Retirement Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend Retirement Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend Retirement Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Fidelity Freedom Blend Retirement Fund - Class C | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.30%
Fidelity Freedom Blend Retirement Fund - Class C | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.70%
Fidelity Freedom Blend Retirement Fund - Class C | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 61.30%
Fidelity Freedom Blend Retirement Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend Retirement Fund - Class C | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.40%
Fidelity Freedom Blend Retirement Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 20.40%
Fidelity Freedom Blend Retirement Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Freedom Blend Retirement Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Fidelity Freedom Blend Retirement Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Freedom Blend Retirement Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend Retirement Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend Retirement Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Freedom Blend Retirement Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend Retirement Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend Retirement Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Fidelity Freedom Blend Retirement Fund - Class K | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.30%
Fidelity Freedom Blend Retirement Fund - Class K | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.70%
Fidelity Freedom Blend Retirement Fund - Class K | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 61.30%
Fidelity Freedom Blend Retirement Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend Retirement Fund - Class K | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.40%
Fidelity Freedom Blend 2055 Fund - Premier Class | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Freedom Blend 2055 Fund - Premier Class | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Freedom Blend 2055 Fund - Premier Class | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
Fidelity Freedom Blend 2055 Fund - Premier Class | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2055 Fund - Premier Class | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2055 Fund - Premier Class | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2055 Fund - Premier Class | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2055 Fund - Premier Class | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2055 Fund - Premier Class | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Freedom Blend 2055 Fund - Premier Class | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend 2055 Fund - Premier Class | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.80%
Fidelity Freedom Blend 2055 Fund - Premier Class | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.30%
Fidelity Freedom Blend 2055 Fund - Premier Class | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Freedom Blend 2055 Fund - Premier Class | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2070 Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 14.80%
Fidelity Advisor Freedom Blend 2070 Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.50%
Fidelity Advisor Freedom Blend 2070 Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Advisor Freedom Blend 2070 Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Advisor Freedom Blend 2070 Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Advisor Freedom Blend 2070 Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2070 Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2070 Fund - Class M | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 53.00%
Fidelity Advisor Freedom Blend 2070 Fund - Class M | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 42.30%
Fidelity Advisor Freedom Blend 2070 Fund - Class M | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2070 Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Freedom Blend 2060 Fund - Premier Class | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Freedom Blend 2060 Fund - Premier Class | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Freedom Blend 2060 Fund - Premier Class | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Freedom Blend 2060 Fund - Premier Class | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2060 Fund - Premier Class | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2060 Fund - Premier Class | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2060 Fund - Premier Class | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2060 Fund - Premier Class | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2060 Fund - Premier Class | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Freedom Blend 2060 Fund - Premier Class | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend 2060 Fund - Premier Class | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Freedom Blend 2060 Fund - Premier Class | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Freedom Blend 2060 Fund - Premier Class | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Freedom Blend 2060 Fund - Premier Class | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2070 Fund - Premier Class | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 14.80%
Fidelity Freedom Blend 2070 Fund - Premier Class | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.50%
Fidelity Freedom Blend 2070 Fund - Premier Class | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Freedom Blend 2070 Fund - Premier Class | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Freedom Blend 2070 Fund - Premier Class | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Freedom Blend 2070 Fund - Premier Class | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2070 Fund - Premier Class | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2070 Fund - Premier Class | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2070 Fund - Premier Class | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2070 Fund - Premier Class | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2070 Fund - Premier Class | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 53.00%
Fidelity Freedom Blend 2070 Fund - Premier Class | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 42.30%
Fidelity Freedom Blend 2070 Fund - Premier Class | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2070 Fund - Premier Class | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Advisor Freedom Blend 2035 Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Advisor Freedom Blend 2035 Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Freedom Blend 2035 Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2035 Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Advisor Freedom Blend 2035 Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class A | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 39.80%
Fidelity Advisor Freedom Blend 2035 Fund - Class A | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 30.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class A | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 28.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2030 Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Advisor Freedom Blend 2030 Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2030 Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2030 Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2030 Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Advisor Freedom Blend 2030 Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Freedom Blend 2030 Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Advisor Freedom Blend 2030 Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Advisor Freedom Blend 2030 Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Freedom Blend 2030 Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Fidelity Advisor Freedom Blend 2030 Fund - Class Z | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.90%
Fidelity Advisor Freedom Blend 2030 Fund - Class Z | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 27.80%
Fidelity Advisor Freedom Blend 2030 Fund - Class Z | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 37.00%
Fidelity Advisor Freedom Blend 2030 Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2025 Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Advisor Freedom Blend 2025 Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
Fidelity Advisor Freedom Blend 2025 Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Advisor Freedom Blend 2025 Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Advisor Freedom Blend 2025 Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Advisor Freedom Blend 2025 Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Advisor Freedom Blend 2025 Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2025 Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Freedom Blend 2025 Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2025 Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
Fidelity Advisor Freedom Blend 2025 Fund - Class I | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 31.10%
Fidelity Advisor Freedom Blend 2025 Fund - Class I | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 25.20%
Fidelity Advisor Freedom Blend 2025 Fund - Class I | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 43.40%
Fidelity Advisor Freedom Blend 2025 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2015 Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
Fidelity Freedom Blend 2015 Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
Fidelity Freedom Blend 2015 Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Fidelity Freedom Blend 2015 Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Freedom Blend 2015 Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Freedom Blend 2015 Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Freedom Blend 2015 Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Freedom Blend 2015 Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Freedom Blend 2015 Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2015 Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend 2015 Fund - Class K | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.10%
Fidelity Freedom Blend 2015 Fund - Class K | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 18.60%
Fidelity Freedom Blend 2015 Fund - Class K | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.30%
Fidelity Freedom Blend 2015 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2015 Fund - Class K | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Freedom Blend 2045 Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
Fidelity Advisor Freedom Blend 2045 Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
Fidelity Advisor Freedom Blend 2045 Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Advisor Freedom Blend 2045 Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Advisor Freedom Blend 2045 Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Advisor Freedom Blend 2045 Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Freedom Blend 2045 Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Freedom Blend 2045 Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Freedom Blend 2045 Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2045 Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Freedom Blend 2045 Fund - Class Z | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.10%
Fidelity Advisor Freedom Blend 2045 Fund - Class Z | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.20%
Fidelity Advisor Freedom Blend 2045 Fund - Class Z | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor Freedom Blend 2045 Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2035 Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Advisor Freedom Blend 2035 Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Freedom Blend 2035 Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2035 Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Advisor Freedom Blend 2035 Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class Z | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 39.80%
Fidelity Advisor Freedom Blend 2035 Fund - Class Z | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 30.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class Z | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 28.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2010 Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Advisor Freedom Blend 2010 Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Advisor Freedom Blend 2010 Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Advisor Freedom Blend 2010 Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2010 Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Advisor Freedom Blend 2010 Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Advisor Freedom Blend 2010 Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class M | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 17.90%
Fidelity Advisor Freedom Blend 2010 Fund - Class M | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.00%
Fidelity Advisor Freedom Blend 2010 Fund - Class M | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 59.40%
Fidelity Advisor Freedom Blend 2010 Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Freedom Blend 2010 Fund - Class M | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Freedom Blend 2070 Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 14.80%
Fidelity Freedom Blend 2070 Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.50%
Fidelity Freedom Blend 2070 Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Freedom Blend 2070 Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Freedom Blend 2070 Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Freedom Blend 2070 Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2070 Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2070 Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2070 Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2070 Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2070 Fund | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 53.00%
Fidelity Freedom Blend 2070 Fund | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 42.30%
Fidelity Freedom Blend 2070 Fund | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2070 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Freedom Blend 2020 Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Freedom Blend 2020 Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2020 Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2020 Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Freedom Blend 2020 Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Freedom Blend 2020 Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2020 Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Freedom Blend 2020 Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2020 Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Freedom Blend 2020 Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2020 Fund - Class K | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 26.60%
Fidelity Freedom Blend 2020 Fund - Class K | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 21.80%
Fidelity Freedom Blend 2020 Fund - Class K | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 49.20%
Fidelity Freedom Blend 2020 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2020 Fund - Class K | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Freedom Blend 2040 Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Fidelity Advisor Freedom Blend 2040 Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.40%
Fidelity Advisor Freedom Blend 2040 Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
Fidelity Advisor Freedom Blend 2040 Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Advisor Freedom Blend 2040 Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2040 Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2040 Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2040 Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2040 Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2040 Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Advisor Freedom Blend 2040 Fund - Class Z | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 48.60%
Fidelity Advisor Freedom Blend 2040 Fund - Class Z | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 36.70%
Fidelity Advisor Freedom Blend 2040 Fund - Class Z | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.30%
Fidelity Advisor Freedom Blend 2040 Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2030 Fund - Premier Class | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Freedom Blend 2030 Fund - Premier Class | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2030 Fund - Premier Class | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2030 Fund - Premier Class | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2030 Fund - Premier Class | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Freedom Blend 2030 Fund - Premier Class | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Freedom Blend 2030 Fund - Premier Class | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Freedom Blend 2030 Fund - Premier Class | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Freedom Blend 2030 Fund - Premier Class | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Freedom Blend 2030 Fund - Premier Class | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Fidelity Freedom Blend 2030 Fund - Premier Class | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.90%
Fidelity Freedom Blend 2030 Fund - Premier Class | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 27.80%
Fidelity Freedom Blend 2030 Fund - Premier Class | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 37.00%
Fidelity Freedom Blend 2030 Fund - Premier Class | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2015 Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
Fidelity Advisor Freedom Blend 2015 Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
Fidelity Advisor Freedom Blend 2015 Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Fidelity Advisor Freedom Blend 2015 Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Freedom Blend 2015 Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Advisor Freedom Blend 2015 Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2015 Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class A | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.10%
Fidelity Advisor Freedom Blend 2015 Fund - Class A | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 18.60%
Fidelity Advisor Freedom Blend 2015 Fund - Class A | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.30%
Fidelity Advisor Freedom Blend 2015 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2015 Fund - Class A | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Freedom Blend 2060 Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Freedom Blend 2060 Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Freedom Blend 2060 Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Freedom Blend 2060 Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2060 Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2060 Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2060 Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2060 Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2060 Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Freedom Blend 2060 Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend 2060 Fund | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Freedom Blend 2060 Fund | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Freedom Blend 2060 Fund | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Freedom Blend 2060 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2065 Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.60%
Fidelity Advisor Freedom Blend 2065 Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Freedom Blend 2065 Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Advisor Freedom Blend 2065 Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2065 Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2065 Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2065 Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2065 Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2065 Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
Fidelity Advisor Freedom Blend 2065 Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Freedom Blend 2065 Fund - Class Z | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Advisor Freedom Blend 2065 Fund - Class Z | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Advisor Freedom Blend 2065 Fund - Class Z | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Advisor Freedom Blend 2065 Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2055 Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Freedom Blend 2055 Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Freedom Blend 2055 Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
Fidelity Freedom Blend 2055 Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2055 Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2055 Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2055 Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2055 Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2055 Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Freedom Blend 2055 Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend 2055 Fund | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.80%
Fidelity Freedom Blend 2055 Fund | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.30%
Fidelity Freedom Blend 2055 Fund | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Freedom Blend 2055 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2015 Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
Fidelity Advisor Freedom Blend 2015 Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
Fidelity Advisor Freedom Blend 2015 Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Fidelity Advisor Freedom Blend 2015 Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Freedom Blend 2015 Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Advisor Freedom Blend 2015 Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2015 Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class I | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.10%
Fidelity Advisor Freedom Blend 2015 Fund - Class I | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 18.60%
Fidelity Advisor Freedom Blend 2015 Fund - Class I | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.30%
Fidelity Advisor Freedom Blend 2015 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2015 Fund - Class I | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Freedom Blend 2015 Fund - Premier Class | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
Fidelity Freedom Blend 2015 Fund - Premier Class | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
Fidelity Freedom Blend 2015 Fund - Premier Class | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Fidelity Freedom Blend 2015 Fund - Premier Class | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Freedom Blend 2015 Fund - Premier Class | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Freedom Blend 2015 Fund - Premier Class | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Freedom Blend 2015 Fund - Premier Class | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Freedom Blend 2015 Fund - Premier Class | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Freedom Blend 2015 Fund - Premier Class | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2015 Fund - Premier Class | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend 2015 Fund - Premier Class | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.10%
Fidelity Freedom Blend 2015 Fund - Premier Class | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 18.60%
Fidelity Freedom Blend 2015 Fund - Premier Class | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.30%
Fidelity Freedom Blend 2015 Fund - Premier Class | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2015 Fund - Premier Class | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Freedom Blend 2070 Fund - Class K6 | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 14.80%
Fidelity Freedom Blend 2070 Fund - Class K6 | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.50%
Fidelity Freedom Blend 2070 Fund - Class K6 | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Freedom Blend 2070 Fund - Class K6 | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Freedom Blend 2070 Fund - Class K6 | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Freedom Blend 2070 Fund - Class K6 | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2070 Fund - Class K6 | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2070 Fund - Class K6 | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2070 Fund - Class K6 | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2070 Fund - Class K6 | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2070 Fund - Class K6 | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 53.00%
Fidelity Freedom Blend 2070 Fund - Class K6 | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 42.30%
Fidelity Freedom Blend 2070 Fund - Class K6 | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2070 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Advisor Freedom Blend 2025 Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Advisor Freedom Blend 2025 Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
Fidelity Advisor Freedom Blend 2025 Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Advisor Freedom Blend 2025 Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Advisor Freedom Blend 2025 Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Advisor Freedom Blend 2025 Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Advisor Freedom Blend 2025 Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2025 Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Freedom Blend 2025 Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2025 Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
Fidelity Advisor Freedom Blend 2025 Fund - Class C | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 31.10%
Fidelity Advisor Freedom Blend 2025 Fund - Class C | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 25.20%
Fidelity Advisor Freedom Blend 2025 Fund - Class C | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 43.40%
Fidelity Advisor Freedom Blend 2025 Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2015 Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
Fidelity Freedom Blend 2015 Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
Fidelity Freedom Blend 2015 Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Fidelity Freedom Blend 2015 Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Freedom Blend 2015 Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Freedom Blend 2015 Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Freedom Blend 2015 Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Freedom Blend 2015 Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Freedom Blend 2015 Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2015 Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend 2015 Fund | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.10%
Fidelity Freedom Blend 2015 Fund | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 18.60%
Fidelity Freedom Blend 2015 Fund | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.30%
Fidelity Freedom Blend 2015 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2015 Fund | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Freedom Blend 2060 Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Advisor Freedom Blend 2060 Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Freedom Blend 2060 Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Advisor Freedom Blend 2060 Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2060 Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2060 Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2060 Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2060 Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2060 Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Advisor Freedom Blend 2060 Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Freedom Blend 2060 Fund - Class Z | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Advisor Freedom Blend 2060 Fund - Class Z | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Advisor Freedom Blend 2060 Fund - Class Z | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Advisor Freedom Blend 2060 Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2065 Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.60%
Fidelity Advisor Freedom Blend 2065 Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Freedom Blend 2065 Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Advisor Freedom Blend 2065 Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2065 Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2065 Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2065 Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2065 Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2065 Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
Fidelity Advisor Freedom Blend 2065 Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Freedom Blend 2065 Fund - Class M | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Advisor Freedom Blend 2065 Fund - Class M | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Advisor Freedom Blend 2065 Fund - Class M | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Advisor Freedom Blend 2065 Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend Retirement Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 20.40%
Fidelity Freedom Blend Retirement Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Freedom Blend Retirement Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Fidelity Freedom Blend Retirement Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Freedom Blend Retirement Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend Retirement Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend Retirement Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Freedom Blend Retirement Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend Retirement Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend Retirement Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Fidelity Freedom Blend Retirement Fund | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.30%
Fidelity Freedom Blend Retirement Fund | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.70%
Fidelity Freedom Blend Retirement Fund | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 61.30%
Fidelity Freedom Blend Retirement Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend Retirement Fund | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.40%
Fidelity Freedom Blend 2045 Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
Fidelity Freedom Blend 2045 Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
Fidelity Freedom Blend 2045 Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Freedom Blend 2045 Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Freedom Blend 2045 Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Freedom Blend 2045 Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Freedom Blend 2045 Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Freedom Blend 2045 Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Freedom Blend 2045 Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2045 Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Freedom Blend 2045 Fund - Class K | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.10%
Fidelity Freedom Blend 2045 Fund - Class K | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.20%
Fidelity Freedom Blend 2045 Fund - Class K | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Freedom Blend 2045 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2035 Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.00%
Fidelity Freedom Blend 2035 Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Freedom Blend 2035 Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Freedom Blend 2035 Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Freedom Blend 2035 Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Freedom Blend 2035 Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2035 Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Freedom Blend 2035 Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Freedom Blend 2035 Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Freedom Blend 2035 Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Freedom Blend 2035 Fund | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 39.80%
Fidelity Freedom Blend 2035 Fund | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 30.90%
Fidelity Freedom Blend 2035 Fund | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 28.90%
Fidelity Freedom Blend 2035 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2040 Fund - Premier Class | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Fidelity Freedom Blend 2040 Fund - Premier Class | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.40%
Fidelity Freedom Blend 2040 Fund - Premier Class | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
Fidelity Freedom Blend 2040 Fund - Premier Class | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Freedom Blend 2040 Fund - Premier Class | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2040 Fund - Premier Class | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2040 Fund - Premier Class | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2040 Fund - Premier Class | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2040 Fund - Premier Class | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2040 Fund - Premier Class | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Freedom Blend 2040 Fund - Premier Class | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 48.60%
Fidelity Freedom Blend 2040 Fund - Premier Class | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 36.70%
Fidelity Freedom Blend 2040 Fund - Premier Class | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.30%
Fidelity Freedom Blend 2040 Fund - Premier Class | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2060 Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Advisor Freedom Blend 2060 Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Freedom Blend 2060 Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Advisor Freedom Blend 2060 Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2060 Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2060 Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2060 Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2060 Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2060 Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Advisor Freedom Blend 2060 Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Freedom Blend 2060 Fund - Class A | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Advisor Freedom Blend 2060 Fund - Class A | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Advisor Freedom Blend 2060 Fund - Class A | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Advisor Freedom Blend 2060 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2065 Fund - Premier Class | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.60%
Fidelity Freedom Blend 2065 Fund - Premier Class | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Freedom Blend 2065 Fund - Premier Class | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Freedom Blend 2065 Fund - Premier Class | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2065 Fund - Premier Class | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2065 Fund - Premier Class | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2065 Fund - Premier Class | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2065 Fund - Premier Class | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2065 Fund - Premier Class | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
Fidelity Freedom Blend 2065 Fund - Premier Class | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend 2065 Fund - Premier Class | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Freedom Blend 2065 Fund - Premier Class | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Freedom Blend 2065 Fund - Premier Class | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Freedom Blend 2065 Fund - Premier Class | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2025 Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Freedom Blend 2025 Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
Fidelity Freedom Blend 2025 Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Freedom Blend 2025 Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Freedom Blend 2025 Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Freedom Blend 2025 Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Freedom Blend 2025 Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2025 Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Freedom Blend 2025 Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2025 Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
Fidelity Freedom Blend 2025 Fund - Class K | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 31.10%
Fidelity Freedom Blend 2025 Fund - Class K | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 25.20%
Fidelity Freedom Blend 2025 Fund - Class K | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 43.40%
Fidelity Freedom Blend 2025 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2065 Fund - Class K6 | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.60%
Fidelity Freedom Blend 2065 Fund - Class K6 | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Freedom Blend 2065 Fund - Class K6 | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Freedom Blend 2065 Fund - Class K6 | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2065 Fund - Class K6 | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2065 Fund - Class K6 | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2065 Fund - Class K6 | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2065 Fund - Class K6 | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2065 Fund - Class K6 | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
Fidelity Freedom Blend 2065 Fund - Class K6 | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend 2065 Fund - Class K6 | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Freedom Blend 2065 Fund - Class K6 | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Freedom Blend 2065 Fund - Class K6 | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Freedom Blend 2065 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2040 Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Fidelity Freedom Blend 2040 Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.40%
Fidelity Freedom Blend 2040 Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
Fidelity Freedom Blend 2040 Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Freedom Blend 2040 Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2040 Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2040 Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2040 Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2040 Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2040 Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Freedom Blend 2040 Fund - Class K | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 48.60%
Fidelity Freedom Blend 2040 Fund - Class K | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 36.70%
Fidelity Freedom Blend 2040 Fund - Class K | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.30%
Fidelity Freedom Blend 2040 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2025 Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Advisor Freedom Blend 2025 Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
Fidelity Advisor Freedom Blend 2025 Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Advisor Freedom Blend 2025 Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Advisor Freedom Blend 2025 Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Advisor Freedom Blend 2025 Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Advisor Freedom Blend 2025 Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2025 Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Freedom Blend 2025 Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2025 Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
Fidelity Advisor Freedom Blend 2025 Fund - Class A | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 31.10%
Fidelity Advisor Freedom Blend 2025 Fund - Class A | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 25.20%
Fidelity Advisor Freedom Blend 2025 Fund - Class A | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 43.40%
Fidelity Advisor Freedom Blend 2025 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend Retirement Fund - Premier Class | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 20.40%
Fidelity Freedom Blend Retirement Fund - Premier Class | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Freedom Blend Retirement Fund - Premier Class | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Fidelity Freedom Blend Retirement Fund - Premier Class | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Freedom Blend Retirement Fund - Premier Class | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend Retirement Fund - Premier Class | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend Retirement Fund - Premier Class | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Freedom Blend Retirement Fund - Premier Class | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend Retirement Fund - Premier Class | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend Retirement Fund - Premier Class | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Fidelity Freedom Blend Retirement Fund - Premier Class | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.30%
Fidelity Freedom Blend Retirement Fund - Premier Class | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.70%
Fidelity Freedom Blend Retirement Fund - Premier Class | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 61.30%
Fidelity Freedom Blend Retirement Fund - Premier Class | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend Retirement Fund - Premier Class | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.40%
Fidelity Freedom Blend 2060 Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Freedom Blend 2060 Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Freedom Blend 2060 Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Freedom Blend 2060 Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2060 Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2060 Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2060 Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2060 Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2060 Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Freedom Blend 2060 Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend 2060 Fund - Class K | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Freedom Blend 2060 Fund - Class K | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Freedom Blend 2060 Fund - Class K | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Freedom Blend 2060 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2030 Fund - Class K6 | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Freedom Blend 2030 Fund - Class K6 | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2030 Fund - Class K6 | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2030 Fund - Class K6 | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2030 Fund - Class K6 | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Freedom Blend 2030 Fund - Class K6 | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Freedom Blend 2030 Fund - Class K6 | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Freedom Blend 2030 Fund - Class K6 | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Freedom Blend 2030 Fund - Class K6 | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Freedom Blend 2030 Fund - Class K6 | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Fidelity Freedom Blend 2030 Fund - Class K6 | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.90%
Fidelity Freedom Blend 2030 Fund - Class K6 | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 27.80%
Fidelity Freedom Blend 2030 Fund - Class K6 | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 37.00%
Fidelity Freedom Blend 2030 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2050 Fund - Premier Class | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
Fidelity Freedom Blend 2050 Fund - Premier Class | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
Fidelity Freedom Blend 2050 Fund - Premier Class | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Freedom Blend 2050 Fund - Premier Class | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2050 Fund - Premier Class | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Freedom Blend 2050 Fund - Premier Class | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Freedom Blend 2050 Fund - Premier Class | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Freedom Blend 2050 Fund - Premier Class | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Freedom Blend 2050 Fund - Premier Class | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2050 Fund - Premier Class | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Freedom Blend 2050 Fund - Premier Class | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.00%
Fidelity Freedom Blend 2050 Fund - Premier Class | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.80%
Fidelity Freedom Blend 2050 Fund - Premier Class | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend 2050 Fund - Premier Class | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2040 Fund - Class K6 | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Fidelity Freedom Blend 2040 Fund - Class K6 | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.40%
Fidelity Freedom Blend 2040 Fund - Class K6 | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
Fidelity Freedom Blend 2040 Fund - Class K6 | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Freedom Blend 2040 Fund - Class K6 | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2040 Fund - Class K6 | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2040 Fund - Class K6 | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2040 Fund - Class K6 | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2040 Fund - Class K6 | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2040 Fund - Class K6 | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Freedom Blend 2040 Fund - Class K6 | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 48.60%
Fidelity Freedom Blend 2040 Fund - Class K6 | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 36.70%
Fidelity Freedom Blend 2040 Fund - Class K6 | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.30%
Fidelity Freedom Blend 2040 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2055 Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Freedom Blend 2055 Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Freedom Blend 2055 Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
Fidelity Freedom Blend 2055 Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2055 Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2055 Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2055 Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2055 Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2055 Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Freedom Blend 2055 Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend 2055 Fund - Class K | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.80%
Fidelity Freedom Blend 2055 Fund - Class K | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.30%
Fidelity Freedom Blend 2055 Fund - Class K | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Freedom Blend 2055 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2010 Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Advisor Freedom Blend 2010 Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Advisor Freedom Blend 2010 Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Advisor Freedom Blend 2010 Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2010 Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Advisor Freedom Blend 2010 Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Advisor Freedom Blend 2010 Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class C | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 17.90%
Fidelity Advisor Freedom Blend 2010 Fund - Class C | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.00%
Fidelity Advisor Freedom Blend 2010 Fund - Class C | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 59.40%
Fidelity Advisor Freedom Blend 2010 Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Freedom Blend 2010 Fund - Class C | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Advisor Freedom Blend 2040 Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Fidelity Advisor Freedom Blend 2040 Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.40%
Fidelity Advisor Freedom Blend 2040 Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
Fidelity Advisor Freedom Blend 2040 Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Advisor Freedom Blend 2040 Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2040 Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2040 Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2040 Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2040 Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2040 Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Advisor Freedom Blend 2040 Fund - Class A | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 48.60%
Fidelity Advisor Freedom Blend 2040 Fund - Class A | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 36.70%
Fidelity Advisor Freedom Blend 2040 Fund - Class A | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.30%
Fidelity Advisor Freedom Blend 2040 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2035 Fund - Premier Class | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.00%
Fidelity Freedom Blend 2035 Fund - Premier Class | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Freedom Blend 2035 Fund - Premier Class | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Freedom Blend 2035 Fund - Premier Class | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Freedom Blend 2035 Fund - Premier Class | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Freedom Blend 2035 Fund - Premier Class | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2035 Fund - Premier Class | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Freedom Blend 2035 Fund - Premier Class | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Freedom Blend 2035 Fund - Premier Class | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Freedom Blend 2035 Fund - Premier Class | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Freedom Blend 2035 Fund - Premier Class | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 39.80%
Fidelity Freedom Blend 2035 Fund - Premier Class | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 30.90%
Fidelity Freedom Blend 2035 Fund - Premier Class | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 28.90%
Fidelity Freedom Blend 2035 Fund - Premier Class | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2045 Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
Fidelity Advisor Freedom Blend 2045 Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
Fidelity Advisor Freedom Blend 2045 Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Advisor Freedom Blend 2045 Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Advisor Freedom Blend 2045 Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Advisor Freedom Blend 2045 Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Freedom Blend 2045 Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Freedom Blend 2045 Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Freedom Blend 2045 Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2045 Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Freedom Blend 2045 Fund - Class A | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.10%
Fidelity Advisor Freedom Blend 2045 Fund - Class A | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.20%
Fidelity Advisor Freedom Blend 2045 Fund - Class A | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor Freedom Blend 2045 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2010 Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Advisor Freedom Blend 2010 Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Advisor Freedom Blend 2010 Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Advisor Freedom Blend 2010 Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2010 Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Advisor Freedom Blend 2010 Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Advisor Freedom Blend 2010 Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class I | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 17.90%
Fidelity Advisor Freedom Blend 2010 Fund - Class I | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.00%
Fidelity Advisor Freedom Blend 2010 Fund - Class I | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 59.40%
Fidelity Advisor Freedom Blend 2010 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Freedom Blend 2010 Fund - Class I | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Advisor Freedom Blend 2045 Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
Fidelity Advisor Freedom Blend 2045 Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
Fidelity Advisor Freedom Blend 2045 Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Advisor Freedom Blend 2045 Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Advisor Freedom Blend 2045 Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Advisor Freedom Blend 2045 Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Freedom Blend 2045 Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Freedom Blend 2045 Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Freedom Blend 2045 Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2045 Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Freedom Blend 2045 Fund - Class M | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.10%
Fidelity Advisor Freedom Blend 2045 Fund - Class M | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.20%
Fidelity Advisor Freedom Blend 2045 Fund - Class M | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor Freedom Blend 2045 Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2050 Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
Fidelity Freedom Blend 2050 Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
Fidelity Freedom Blend 2050 Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Freedom Blend 2050 Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2050 Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Freedom Blend 2050 Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Freedom Blend 2050 Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Freedom Blend 2050 Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Freedom Blend 2050 Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2050 Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Freedom Blend 2050 Fund - Class K | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.00%
Fidelity Freedom Blend 2050 Fund - Class K | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.80%
Fidelity Freedom Blend 2050 Fund - Class K | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend 2050 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2025 Fund - Class K6 | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Freedom Blend 2025 Fund - Class K6 | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
Fidelity Freedom Blend 2025 Fund - Class K6 | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Freedom Blend 2025 Fund - Class K6 | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Freedom Blend 2025 Fund - Class K6 | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Freedom Blend 2025 Fund - Class K6 | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Freedom Blend 2025 Fund - Class K6 | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2025 Fund - Class K6 | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Freedom Blend 2025 Fund - Class K6 | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2025 Fund - Class K6 | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
Fidelity Freedom Blend 2025 Fund - Class K6 | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 31.10%
Fidelity Freedom Blend 2025 Fund - Class K6 | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 25.20%
Fidelity Freedom Blend 2025 Fund - Class K6 | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 43.40%
Fidelity Freedom Blend 2025 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2020 Fund - Class K6 | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Freedom Blend 2020 Fund - Class K6 | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2020 Fund - Class K6 | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2020 Fund - Class K6 | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Freedom Blend 2020 Fund - Class K6 | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Freedom Blend 2020 Fund - Class K6 | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2020 Fund - Class K6 | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Freedom Blend 2020 Fund - Class K6 | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2020 Fund - Class K6 | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Freedom Blend 2020 Fund - Class K6 | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2020 Fund - Class K6 | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 26.60%
Fidelity Freedom Blend 2020 Fund - Class K6 | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 21.80%
Fidelity Freedom Blend 2020 Fund - Class K6 | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 49.20%
Fidelity Freedom Blend 2020 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2020 Fund - Class K6 | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Freedom Blend 2065 Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.60%
Fidelity Freedom Blend 2065 Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Freedom Blend 2065 Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Freedom Blend 2065 Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2065 Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2065 Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2065 Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2065 Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2065 Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
Fidelity Freedom Blend 2065 Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend 2065 Fund - Class K | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Freedom Blend 2065 Fund - Class K | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Freedom Blend 2065 Fund - Class K | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Freedom Blend 2065 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2055 Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Freedom Blend 2055 Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2055 Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2055 Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Freedom Blend 2055 Fund - Class C | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class C | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.30%
Fidelity Advisor Freedom Blend 2055 Fund - Class C | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2030 Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Freedom Blend 2030 Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2030 Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2030 Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2030 Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Freedom Blend 2030 Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Freedom Blend 2030 Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Freedom Blend 2030 Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Freedom Blend 2030 Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Freedom Blend 2030 Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Fidelity Freedom Blend 2030 Fund | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.90%
Fidelity Freedom Blend 2030 Fund | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 27.80%
Fidelity Freedom Blend 2030 Fund | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 37.00%
Fidelity Freedom Blend 2030 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2050 Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
Fidelity Advisor Freedom Blend 2050 Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
Fidelity Advisor Freedom Blend 2050 Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Advisor Freedom Blend 2050 Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2050 Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Advisor Freedom Blend 2050 Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2050 Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Freedom Blend 2050 Fund - Class Z | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.00%
Fidelity Advisor Freedom Blend 2050 Fund - Class Z | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.80%
Fidelity Advisor Freedom Blend 2050 Fund - Class Z | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Advisor Freedom Blend 2050 Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2055 Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Freedom Blend 2055 Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2055 Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2055 Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Freedom Blend 2055 Fund - Class I | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class I | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.30%
Fidelity Advisor Freedom Blend 2055 Fund - Class I | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2030 Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Advisor Freedom Blend 2030 Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2030 Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2030 Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2030 Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Advisor Freedom Blend 2030 Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Freedom Blend 2030 Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Advisor Freedom Blend 2030 Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Advisor Freedom Blend 2030 Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Freedom Blend 2030 Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Fidelity Advisor Freedom Blend 2030 Fund - Class I | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.90%
Fidelity Advisor Freedom Blend 2030 Fund - Class I | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 27.80%
Fidelity Advisor Freedom Blend 2030 Fund - Class I | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 37.00%
Fidelity Advisor Freedom Blend 2030 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2050 Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
Fidelity Advisor Freedom Blend 2050 Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
Fidelity Advisor Freedom Blend 2050 Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Advisor Freedom Blend 2050 Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2050 Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Advisor Freedom Blend 2050 Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2050 Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Freedom Blend 2050 Fund - Class A | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.00%
Fidelity Advisor Freedom Blend 2050 Fund - Class A | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.80%
Fidelity Advisor Freedom Blend 2050 Fund - Class A | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Advisor Freedom Blend 2050 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2030 Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Advisor Freedom Blend 2030 Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2030 Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2030 Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2030 Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Advisor Freedom Blend 2030 Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Freedom Blend 2030 Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Advisor Freedom Blend 2030 Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Advisor Freedom Blend 2030 Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Freedom Blend 2030 Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Fidelity Advisor Freedom Blend 2030 Fund - Class C | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.90%
Fidelity Advisor Freedom Blend 2030 Fund - Class C | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 27.80%
Fidelity Advisor Freedom Blend 2030 Fund - Class C | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 37.00%
Fidelity Advisor Freedom Blend 2030 Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2070 Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 14.80%
Fidelity Advisor Freedom Blend 2070 Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.50%
Fidelity Advisor Freedom Blend 2070 Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Advisor Freedom Blend 2070 Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Advisor Freedom Blend 2070 Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Advisor Freedom Blend 2070 Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2070 Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2070 Fund - Class I | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 53.00%
Fidelity Advisor Freedom Blend 2070 Fund - Class I | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 42.30%
Fidelity Advisor Freedom Blend 2070 Fund - Class I | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2070 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Advisor Freedom Blend 2045 Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
Fidelity Advisor Freedom Blend 2045 Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
Fidelity Advisor Freedom Blend 2045 Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Advisor Freedom Blend 2045 Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Advisor Freedom Blend 2045 Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Advisor Freedom Blend 2045 Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Freedom Blend 2045 Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Freedom Blend 2045 Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Freedom Blend 2045 Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2045 Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Freedom Blend 2045 Fund - Class I | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.10%
Fidelity Advisor Freedom Blend 2045 Fund - Class I | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.20%
Fidelity Advisor Freedom Blend 2045 Fund - Class I | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor Freedom Blend 2045 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2010 Fund - Premier Class | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.80%
Fidelity Freedom Blend 2010 Fund - Premier Class | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Freedom Blend 2010 Fund - Premier Class | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Freedom Blend 2010 Fund - Premier Class | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Freedom Blend 2010 Fund - Premier Class | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Freedom Blend 2010 Fund - Premier Class | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2010 Fund - Premier Class | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2010 Fund - Premier Class | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Freedom Blend 2010 Fund - Premier Class | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend 2010 Fund - Premier Class | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Freedom Blend 2010 Fund - Premier Class | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 17.90%
Fidelity Freedom Blend 2010 Fund - Premier Class | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.00%
Fidelity Freedom Blend 2010 Fund - Premier Class | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 59.40%
Fidelity Freedom Blend 2010 Fund - Premier Class | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Freedom Blend 2010 Fund - Premier Class | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Freedom Blend 2010 Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.80%
Fidelity Freedom Blend 2010 Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Freedom Blend 2010 Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Freedom Blend 2010 Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Freedom Blend 2010 Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Freedom Blend 2010 Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2010 Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2010 Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Freedom Blend 2010 Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend 2010 Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Freedom Blend 2010 Fund | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 17.90%
Fidelity Freedom Blend 2010 Fund | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.00%
Fidelity Freedom Blend 2010 Fund | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 59.40%
Fidelity Freedom Blend 2010 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Freedom Blend 2010 Fund | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Freedom Blend 2020 Fund - Premier Class | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Freedom Blend 2020 Fund - Premier Class | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2020 Fund - Premier Class | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2020 Fund - Premier Class | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Freedom Blend 2020 Fund - Premier Class | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Freedom Blend 2020 Fund - Premier Class | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2020 Fund - Premier Class | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Freedom Blend 2020 Fund - Premier Class | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2020 Fund - Premier Class | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Freedom Blend 2020 Fund - Premier Class | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2020 Fund - Premier Class | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 26.60%
Fidelity Freedom Blend 2020 Fund - Premier Class | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 21.80%
Fidelity Freedom Blend 2020 Fund - Premier Class | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 49.20%
Fidelity Freedom Blend 2020 Fund - Premier Class | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2020 Fund - Premier Class | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Freedom Blend 2015 Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
Fidelity Advisor Freedom Blend 2015 Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
Fidelity Advisor Freedom Blend 2015 Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Fidelity Advisor Freedom Blend 2015 Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Freedom Blend 2015 Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Advisor Freedom Blend 2015 Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2015 Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class M | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.10%
Fidelity Advisor Freedom Blend 2015 Fund - Class M | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 18.60%
Fidelity Advisor Freedom Blend 2015 Fund - Class M | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.30%
Fidelity Advisor Freedom Blend 2015 Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2015 Fund - Class M | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
Fidelity Advisor Freedom Blend 2050 Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
Fidelity Advisor Freedom Blend 2050 Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Advisor Freedom Blend 2050 Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2050 Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Advisor Freedom Blend 2050 Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2050 Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Freedom Blend 2050 Fund - Class C | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.00%
Fidelity Advisor Freedom Blend 2050 Fund - Class C | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.80%
Fidelity Advisor Freedom Blend 2050 Fund - Class C | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Advisor Freedom Blend 2050 Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2050 Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
Fidelity Freedom Blend 2050 Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
Fidelity Freedom Blend 2050 Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Freedom Blend 2050 Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2050 Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Freedom Blend 2050 Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Freedom Blend 2050 Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Freedom Blend 2050 Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Freedom Blend 2050 Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2050 Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Freedom Blend 2050 Fund | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.00%
Fidelity Freedom Blend 2050 Fund | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.80%
Fidelity Freedom Blend 2050 Fund | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend 2050 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2020 Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Advisor Freedom Blend 2020 Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2020 Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2020 Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Advisor Freedom Blend 2020 Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Advisor Freedom Blend 2020 Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2020 Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Advisor Freedom Blend 2020 Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2020 Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Advisor Freedom Blend 2020 Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2020 Fund - Class M | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 26.60%
Fidelity Advisor Freedom Blend 2020 Fund - Class M | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 21.80%
Fidelity Advisor Freedom Blend 2020 Fund - Class M | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 49.20%
Fidelity Advisor Freedom Blend 2020 Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2020 Fund - Class M | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Freedom Blend 2045 Fund - Premier Class | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
Fidelity Freedom Blend 2045 Fund - Premier Class | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
Fidelity Freedom Blend 2045 Fund - Premier Class | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Freedom Blend 2045 Fund - Premier Class | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Freedom Blend 2045 Fund - Premier Class | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Freedom Blend 2045 Fund - Premier Class | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Freedom Blend 2045 Fund - Premier Class | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Freedom Blend 2045 Fund - Premier Class | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Freedom Blend 2045 Fund - Premier Class | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2045 Fund - Premier Class | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Freedom Blend 2045 Fund - Premier Class | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.10%
Fidelity Freedom Blend 2045 Fund - Premier Class | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.20%
Fidelity Freedom Blend 2045 Fund - Premier Class | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Freedom Blend 2045 Fund - Premier Class | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2045 Fund - Class K6 | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
Fidelity Freedom Blend 2045 Fund - Class K6 | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
Fidelity Freedom Blend 2045 Fund - Class K6 | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Freedom Blend 2045 Fund - Class K6 | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Freedom Blend 2045 Fund - Class K6 | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Freedom Blend 2045 Fund - Class K6 | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Freedom Blend 2045 Fund - Class K6 | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Freedom Blend 2045 Fund - Class K6 | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Freedom Blend 2045 Fund - Class K6 | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2045 Fund - Class K6 | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Freedom Blend 2045 Fund - Class K6 | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.10%
Fidelity Freedom Blend 2045 Fund - Class K6 | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.20%
Fidelity Freedom Blend 2045 Fund - Class K6 | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Freedom Blend 2045 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2025 Fund - Premier Class | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Freedom Blend 2025 Fund - Premier Class | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
Fidelity Freedom Blend 2025 Fund - Premier Class | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Freedom Blend 2025 Fund - Premier Class | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Freedom Blend 2025 Fund - Premier Class | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Freedom Blend 2025 Fund - Premier Class | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Freedom Blend 2025 Fund - Premier Class | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2025 Fund - Premier Class | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Freedom Blend 2025 Fund - Premier Class | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2025 Fund - Premier Class | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
Fidelity Freedom Blend 2025 Fund - Premier Class | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 31.10%
Fidelity Freedom Blend 2025 Fund - Premier Class | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 25.20%
Fidelity Freedom Blend 2025 Fund - Premier Class | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 43.40%
Fidelity Freedom Blend 2025 Fund - Premier Class | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2040 Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Fidelity Advisor Freedom Blend 2040 Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.40%
Fidelity Advisor Freedom Blend 2040 Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
Fidelity Advisor Freedom Blend 2040 Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Advisor Freedom Blend 2040 Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2040 Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2040 Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2040 Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2040 Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2040 Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Advisor Freedom Blend 2040 Fund - Class C | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 48.60%
Fidelity Advisor Freedom Blend 2040 Fund - Class C | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 36.70%
Fidelity Advisor Freedom Blend 2040 Fund - Class C | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.30%
Fidelity Advisor Freedom Blend 2040 Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2020 Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Advisor Freedom Blend 2020 Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2020 Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2020 Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Advisor Freedom Blend 2020 Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Advisor Freedom Blend 2020 Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2020 Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Advisor Freedom Blend 2020 Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2020 Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Advisor Freedom Blend 2020 Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2020 Fund - Class I | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 26.60%
Fidelity Advisor Freedom Blend 2020 Fund - Class I | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 21.80%
Fidelity Advisor Freedom Blend 2020 Fund - Class I | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 49.20%
Fidelity Advisor Freedom Blend 2020 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2020 Fund - Class I | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Freedom Blend 2035 Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Advisor Freedom Blend 2035 Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Freedom Blend 2035 Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2035 Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Advisor Freedom Blend 2035 Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class I | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 39.80%
Fidelity Advisor Freedom Blend 2035 Fund - Class I | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 30.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class I | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 28.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2070 Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 14.80%
Fidelity Advisor Freedom Blend 2070 Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.50%
Fidelity Advisor Freedom Blend 2070 Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Advisor Freedom Blend 2070 Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Advisor Freedom Blend 2070 Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Advisor Freedom Blend 2070 Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2070 Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2070 Fund - Class C | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 53.00%
Fidelity Advisor Freedom Blend 2070 Fund - Class C | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 42.30%
Fidelity Advisor Freedom Blend 2070 Fund - Class C | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2070 Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Freedom Blend 2065 Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.60%
Fidelity Freedom Blend 2065 Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Freedom Blend 2065 Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Freedom Blend 2065 Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2065 Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2065 Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2065 Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2065 Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2065 Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
Fidelity Freedom Blend 2065 Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend 2065 Fund | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Freedom Blend 2065 Fund | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Freedom Blend 2065 Fund | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Freedom Blend 2065 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2010 Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.80%
Fidelity Freedom Blend 2010 Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Freedom Blend 2010 Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Freedom Blend 2010 Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Freedom Blend 2010 Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Freedom Blend 2010 Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2010 Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2010 Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Freedom Blend 2010 Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend 2010 Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Freedom Blend 2010 Fund - Class K | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 17.90%
Fidelity Freedom Blend 2010 Fund - Class K | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.00%
Fidelity Freedom Blend 2010 Fund - Class K | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 59.40%
Fidelity Freedom Blend 2010 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Freedom Blend 2010 Fund - Class K | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Freedom Blend Retirement Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 20.40%
Fidelity Freedom Blend Retirement Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Freedom Blend Retirement Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Fidelity Freedom Blend Retirement Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Freedom Blend Retirement Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend Retirement Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend Retirement Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Freedom Blend Retirement Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend Retirement Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend Retirement Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Fidelity Freedom Blend Retirement Fund - Class Z | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.30%
Fidelity Freedom Blend Retirement Fund - Class Z | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.70%
Fidelity Freedom Blend Retirement Fund - Class Z | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 61.30%
Fidelity Freedom Blend Retirement Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend Retirement Fund - Class Z | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.40%
Fidelity Freedom Blend 2070 Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 14.80%
Fidelity Freedom Blend 2070 Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.50%
Fidelity Freedom Blend 2070 Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Freedom Blend 2070 Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Freedom Blend 2070 Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Freedom Blend 2070 Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2070 Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2070 Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2070 Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2070 Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2070 Fund - Class K | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 53.00%
Fidelity Freedom Blend 2070 Fund - Class K | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 42.30%
Fidelity Freedom Blend 2070 Fund - Class K | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2070 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Freedom Blend 2060 Fund - Class K6 | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Freedom Blend 2060 Fund - Class K6 | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Freedom Blend 2060 Fund - Class K6 | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Freedom Blend 2060 Fund - Class K6 | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2060 Fund - Class K6 | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2060 Fund - Class K6 | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2060 Fund - Class K6 | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2060 Fund - Class K6 | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2060 Fund - Class K6 | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Freedom Blend 2060 Fund - Class K6 | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend 2060 Fund - Class K6 | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Freedom Blend 2060 Fund - Class K6 | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Freedom Blend 2060 Fund - Class K6 | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Freedom Blend 2060 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2060 Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Advisor Freedom Blend 2060 Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Freedom Blend 2060 Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Advisor Freedom Blend 2060 Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2060 Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2060 Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2060 Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2060 Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2060 Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Advisor Freedom Blend 2060 Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Freedom Blend 2060 Fund - Class I | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Advisor Freedom Blend 2060 Fund - Class I | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Advisor Freedom Blend 2060 Fund - Class I | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Advisor Freedom Blend 2060 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2045 Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
Fidelity Advisor Freedom Blend 2045 Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
Fidelity Advisor Freedom Blend 2045 Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Advisor Freedom Blend 2045 Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Advisor Freedom Blend 2045 Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Advisor Freedom Blend 2045 Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Freedom Blend 2045 Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Freedom Blend 2045 Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Freedom Blend 2045 Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2045 Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Freedom Blend 2045 Fund - Class C | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.10%
Fidelity Advisor Freedom Blend 2045 Fund - Class C | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.20%
Fidelity Advisor Freedom Blend 2045 Fund - Class C | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor Freedom Blend 2045 Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend Retirement Fund - Class K6 | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 20.40%
Fidelity Freedom Blend Retirement Fund - Class K6 | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Freedom Blend Retirement Fund - Class K6 | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Fidelity Freedom Blend Retirement Fund - Class K6 | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Freedom Blend Retirement Fund - Class K6 | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend Retirement Fund - Class K6 | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend Retirement Fund - Class K6 | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Freedom Blend Retirement Fund - Class K6 | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend Retirement Fund - Class K6 | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend Retirement Fund - Class K6 | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Fidelity Freedom Blend Retirement Fund - Class K6 | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.30%
Fidelity Freedom Blend Retirement Fund - Class K6 | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.70%
Fidelity Freedom Blend Retirement Fund - Class K6 | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 61.30%
Fidelity Freedom Blend Retirement Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend Retirement Fund - Class K6 | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.40%
Fidelity Advisor Freedom Blend 2010 Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Advisor Freedom Blend 2010 Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Advisor Freedom Blend 2010 Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Advisor Freedom Blend 2010 Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2010 Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Advisor Freedom Blend 2010 Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Advisor Freedom Blend 2010 Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class A | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 17.90%
Fidelity Advisor Freedom Blend 2010 Fund - Class A | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.00%
Fidelity Advisor Freedom Blend 2010 Fund - Class A | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 59.40%
Fidelity Advisor Freedom Blend 2010 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Freedom Blend 2010 Fund - Class A | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Advisor Freedom Blend 2025 Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Advisor Freedom Blend 2025 Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
Fidelity Advisor Freedom Blend 2025 Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Advisor Freedom Blend 2025 Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Advisor Freedom Blend 2025 Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Advisor Freedom Blend 2025 Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Advisor Freedom Blend 2025 Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2025 Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Freedom Blend 2025 Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2025 Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
Fidelity Advisor Freedom Blend 2025 Fund - Class M | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 31.10%
Fidelity Advisor Freedom Blend 2025 Fund - Class M | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 25.20%
Fidelity Advisor Freedom Blend 2025 Fund - Class M | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 43.40%
Fidelity Advisor Freedom Blend 2025 Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2070 Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 14.80%
Fidelity Advisor Freedom Blend 2070 Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.50%
Fidelity Advisor Freedom Blend 2070 Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Advisor Freedom Blend 2070 Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Advisor Freedom Blend 2070 Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Advisor Freedom Blend 2070 Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2070 Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2070 Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2070 Fund - Class Z | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 53.00%
Fidelity Advisor Freedom Blend 2070 Fund - Class Z | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 42.30%
Fidelity Advisor Freedom Blend 2070 Fund - Class Z | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2070 Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Freedom Blend 2045 Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
Fidelity Freedom Blend 2045 Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
Fidelity Freedom Blend 2045 Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Freedom Blend 2045 Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Freedom Blend 2045 Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Freedom Blend 2045 Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Freedom Blend 2045 Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Freedom Blend 2045 Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Freedom Blend 2045 Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2045 Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Freedom Blend 2045 Fund | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.10%
Fidelity Freedom Blend 2045 Fund | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.20%
Fidelity Freedom Blend 2045 Fund | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Freedom Blend 2045 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend Retirement Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 20.40%
Fidelity Freedom Blend Retirement Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Freedom Blend Retirement Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Fidelity Freedom Blend Retirement Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Freedom Blend Retirement Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend Retirement Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend Retirement Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Freedom Blend Retirement Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend Retirement Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend Retirement Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Fidelity Freedom Blend Retirement Fund - Class A | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.30%
Fidelity Freedom Blend Retirement Fund - Class A | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.70%
Fidelity Freedom Blend Retirement Fund - Class A | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 61.30%
Fidelity Freedom Blend Retirement Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend Retirement Fund - Class A | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.40%
Fidelity Advisor Freedom Blend 2055 Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Freedom Blend 2055 Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2055 Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2055 Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Freedom Blend 2055 Fund - Class M | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class M | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.30%
Fidelity Advisor Freedom Blend 2055 Fund - Class M | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2030 Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Advisor Freedom Blend 2030 Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2030 Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2030 Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2030 Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Advisor Freedom Blend 2030 Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Freedom Blend 2030 Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Advisor Freedom Blend 2030 Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Advisor Freedom Blend 2030 Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Freedom Blend 2030 Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Fidelity Advisor Freedom Blend 2030 Fund - Class M | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.90%
Fidelity Advisor Freedom Blend 2030 Fund - Class M | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 27.80%
Fidelity Advisor Freedom Blend 2030 Fund - Class M | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 37.00%
Fidelity Advisor Freedom Blend 2030 Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2015 Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
Fidelity Advisor Freedom Blend 2015 Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
Fidelity Advisor Freedom Blend 2015 Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Fidelity Advisor Freedom Blend 2015 Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Freedom Blend 2015 Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Advisor Freedom Blend 2015 Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2015 Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Advisor Freedom Blend 2015 Fund - Class C | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 22.10%
Fidelity Advisor Freedom Blend 2015 Fund - Class C | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 18.60%
Fidelity Advisor Freedom Blend 2015 Fund - Class C | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 54.30%
Fidelity Advisor Freedom Blend 2015 Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2015 Fund - Class C | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Freedom Blend 2055 Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Freedom Blend 2055 Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2055 Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2055 Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Freedom Blend 2055 Fund - Class A | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class A | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.30%
Fidelity Advisor Freedom Blend 2055 Fund - Class A | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2035 Fund - Class K6 | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.00%
Fidelity Freedom Blend 2035 Fund - Class K6 | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Freedom Blend 2035 Fund - Class K6 | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Freedom Blend 2035 Fund - Class K6 | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Freedom Blend 2035 Fund - Class K6 | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Freedom Blend 2035 Fund - Class K6 | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2035 Fund - Class K6 | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Freedom Blend 2035 Fund - Class K6 | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Freedom Blend 2035 Fund - Class K6 | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Freedom Blend 2035 Fund - Class K6 | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Freedom Blend 2035 Fund - Class K6 | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 39.80%
Fidelity Freedom Blend 2035 Fund - Class K6 | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 30.90%
Fidelity Freedom Blend 2035 Fund - Class K6 | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 28.90%
Fidelity Freedom Blend 2035 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2020 Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Freedom Blend 2020 Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2020 Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2020 Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Freedom Blend 2020 Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Freedom Blend 2020 Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2020 Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Freedom Blend 2020 Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2020 Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Freedom Blend 2020 Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2020 Fund | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 26.60%
Fidelity Freedom Blend 2020 Fund | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 21.80%
Fidelity Freedom Blend 2020 Fund | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 49.20%
Fidelity Freedom Blend 2020 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2020 Fund | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Freedom Blend 2055 Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Freedom Blend 2055 Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2055 Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2055 Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Freedom Blend 2055 Fund - Class Z | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.80%
Fidelity Advisor Freedom Blend 2055 Fund - Class Z | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.30%
Fidelity Advisor Freedom Blend 2055 Fund - Class Z | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Freedom Blend 2055 Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2050 Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
Fidelity Advisor Freedom Blend 2050 Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
Fidelity Advisor Freedom Blend 2050 Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Advisor Freedom Blend 2050 Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2050 Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Advisor Freedom Blend 2050 Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Freedom Blend 2050 Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2050 Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Freedom Blend 2050 Fund - Class M | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.00%
Fidelity Advisor Freedom Blend 2050 Fund - Class M | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.80%
Fidelity Advisor Freedom Blend 2050 Fund - Class M | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Advisor Freedom Blend 2050 Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2035 Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.00%
Fidelity Freedom Blend 2035 Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Freedom Blend 2035 Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Freedom Blend 2035 Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Freedom Blend 2035 Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Freedom Blend 2035 Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2035 Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Freedom Blend 2035 Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Freedom Blend 2035 Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Freedom Blend 2035 Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Freedom Blend 2035 Fund - Class K | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 39.80%
Fidelity Freedom Blend 2035 Fund - Class K | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 30.90%
Fidelity Freedom Blend 2035 Fund - Class K | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 28.90%
Fidelity Freedom Blend 2035 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2025 Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Advisor Freedom Blend 2025 Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
Fidelity Advisor Freedom Blend 2025 Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Advisor Freedom Blend 2025 Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Advisor Freedom Blend 2025 Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Advisor Freedom Blend 2025 Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Advisor Freedom Blend 2025 Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2025 Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Freedom Blend 2025 Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2025 Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
Fidelity Advisor Freedom Blend 2025 Fund - Class Z | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 31.10%
Fidelity Advisor Freedom Blend 2025 Fund - Class Z | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 25.20%
Fidelity Advisor Freedom Blend 2025 Fund - Class Z | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 43.40%
Fidelity Advisor Freedom Blend 2025 Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2055 Fund - Class K6 | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Freedom Blend 2055 Fund - Class K6 | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Freedom Blend 2055 Fund - Class K6 | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
Fidelity Freedom Blend 2055 Fund - Class K6 | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Freedom Blend 2055 Fund - Class K6 | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2055 Fund - Class K6 | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2055 Fund - Class K6 | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2055 Fund - Class K6 | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2055 Fund - Class K6 | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Freedom Blend 2055 Fund - Class K6 | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend 2055 Fund - Class K6 | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.80%
Fidelity Freedom Blend 2055 Fund - Class K6 | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.30%
Fidelity Freedom Blend 2055 Fund - Class K6 | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Freedom Blend 2055 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2040 Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Fidelity Freedom Blend 2040 Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.40%
Fidelity Freedom Blend 2040 Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
Fidelity Freedom Blend 2040 Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Freedom Blend 2040 Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2040 Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2040 Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2040 Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend 2040 Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2040 Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Freedom Blend 2040 Fund | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 48.60%
Fidelity Freedom Blend 2040 Fund | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 36.70%
Fidelity Freedom Blend 2040 Fund | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.30%
Fidelity Freedom Blend 2040 Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Freedom Blend 2030 Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Freedom Blend 2030 Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2030 Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Freedom Blend 2030 Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Freedom Blend 2030 Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Freedom Blend 2030 Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Freedom Blend 2030 Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Freedom Blend 2030 Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Freedom Blend 2030 Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Freedom Blend 2030 Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Fidelity Freedom Blend 2030 Fund - Class K | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.90%
Fidelity Freedom Blend 2030 Fund - Class K | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 27.80%
Fidelity Freedom Blend 2030 Fund - Class K | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 37.00%
Fidelity Freedom Blend 2030 Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2060 Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
Fidelity Advisor Freedom Blend 2060 Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Freedom Blend 2060 Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Advisor Freedom Blend 2060 Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2060 Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2060 Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2060 Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2060 Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2060 Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Fidelity Advisor Freedom Blend 2060 Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Freedom Blend 2060 Fund - Class C | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Advisor Freedom Blend 2060 Fund - Class C | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Advisor Freedom Blend 2060 Fund - Class C | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Advisor Freedom Blend 2060 Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2030 Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Advisor Freedom Blend 2030 Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2030 Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2030 Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2030 Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Advisor Freedom Blend 2030 Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Freedom Blend 2030 Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Advisor Freedom Blend 2030 Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Advisor Freedom Blend 2030 Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Freedom Blend 2030 Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Fidelity Advisor Freedom Blend 2030 Fund - Class A | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 34.90%
Fidelity Advisor Freedom Blend 2030 Fund - Class A | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 27.80%
Fidelity Advisor Freedom Blend 2030 Fund - Class A | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 37.00%
Fidelity Advisor Freedom Blend 2030 Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2065 Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.60%
Fidelity Advisor Freedom Blend 2065 Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Freedom Blend 2065 Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Advisor Freedom Blend 2065 Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2065 Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Freedom Blend 2065 Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2065 Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2065 Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Freedom Blend 2065 Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
Fidelity Advisor Freedom Blend 2065 Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Freedom Blend 2065 Fund - Class I | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.90%
Fidelity Advisor Freedom Blend 2065 Fund - Class I | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 41.40%
Fidelity Advisor Freedom Blend 2065 Fund - Class I | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Advisor Freedom Blend 2065 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2040 Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Fidelity Advisor Freedom Blend 2040 Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.40%
Fidelity Advisor Freedom Blend 2040 Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
Fidelity Advisor Freedom Blend 2040 Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Advisor Freedom Blend 2040 Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2040 Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2040 Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2040 Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2040 Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2040 Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Advisor Freedom Blend 2040 Fund - Class M | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 48.60%
Fidelity Advisor Freedom Blend 2040 Fund - Class M | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 36.70%
Fidelity Advisor Freedom Blend 2040 Fund - Class M | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.30%
Fidelity Advisor Freedom Blend 2040 Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2010 Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Advisor Freedom Blend 2010 Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Advisor Freedom Blend 2010 Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Advisor Freedom Blend 2010 Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Freedom Blend 2010 Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Advisor Freedom Blend 2010 Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Advisor Freedom Blend 2010 Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Freedom Blend 2010 Fund - Class Z | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 17.90%
Fidelity Advisor Freedom Blend 2010 Fund - Class Z | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.00%
Fidelity Advisor Freedom Blend 2010 Fund - Class Z | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 59.40%
Fidelity Advisor Freedom Blend 2010 Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Freedom Blend 2010 Fund - Class Z | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Advisor Freedom Blend 2020 Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Advisor Freedom Blend 2020 Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Advisor Freedom Blend 2020 Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2020 Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Advisor Freedom Blend 2020 Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Advisor Freedom Blend 2020 Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2020 Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Advisor Freedom Blend 2020 Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2020 Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Advisor Freedom Blend 2020 Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2020 Fund - Class Z | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 26.60%
Fidelity Advisor Freedom Blend 2020 Fund - Class Z | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 21.80%
Fidelity Advisor Freedom Blend 2020 Fund - Class Z | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 49.20%
Fidelity Advisor Freedom Blend 2020 Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Freedom Blend 2020 Fund - Class Z | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Freedom Blend Retirement Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 20.40%
Fidelity Freedom Blend Retirement Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Freedom Blend Retirement Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Fidelity Freedom Blend Retirement Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Freedom Blend Retirement Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend Retirement Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend Retirement Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Freedom Blend Retirement Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend Retirement Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend Retirement Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Fidelity Freedom Blend Retirement Fund - Class M | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.30%
Fidelity Freedom Blend Retirement Fund - Class M | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.70%
Fidelity Freedom Blend Retirement Fund - Class M | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 61.30%
Fidelity Freedom Blend Retirement Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend Retirement Fund - Class M | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.40%
Fidelity Freedom Blend 2050 Fund - Class K6 | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
Fidelity Freedom Blend 2050 Fund - Class K6 | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
Fidelity Freedom Blend 2050 Fund - Class K6 | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Freedom Blend 2050 Fund - Class K6 | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Freedom Blend 2050 Fund - Class K6 | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Freedom Blend 2050 Fund - Class K6 | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Freedom Blend 2050 Fund - Class K6 | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Freedom Blend 2050 Fund - Class K6 | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Freedom Blend 2050 Fund - Class K6 | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Freedom Blend 2050 Fund - Class K6 | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Freedom Blend 2050 Fund - Class K6 | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 55.00%
Fidelity Freedom Blend 2050 Fund - Class K6 | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 40.80%
Fidelity Freedom Blend 2050 Fund - Class K6 | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend 2050 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend 2010 Fund - Class K6 | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.80%
Fidelity Freedom Blend 2010 Fund - Class K6 | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
Fidelity Freedom Blend 2010 Fund - Class K6 | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Freedom Blend 2010 Fund - Class K6 | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity Freedom Blend 2010 Fund - Class K6 | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Freedom Blend 2010 Fund - Class K6 | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend 2010 Fund - Class K6 | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Freedom Blend 2010 Fund - Class K6 | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Freedom Blend 2010 Fund - Class K6 | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend 2010 Fund - Class K6 | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Freedom Blend 2010 Fund - Class K6 | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 17.90%
Fidelity Freedom Blend 2010 Fund - Class K6 | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.00%
Fidelity Freedom Blend 2010 Fund - Class K6 | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 59.40%
Fidelity Freedom Blend 2010 Fund - Class K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Freedom Blend 2010 Fund - Class K6 | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Fidelity Freedom Blend Retirement Fund- Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 20.40%
Fidelity Freedom Blend Retirement Fund- Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity Freedom Blend Retirement Fund- Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Fidelity Freedom Blend Retirement Fund- Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Freedom Blend Retirement Fund- Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Freedom Blend Retirement Fund- Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Freedom Blend Retirement Fund- Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Freedom Blend Retirement Fund- Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Freedom Blend Retirement Fund- Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Freedom Blend Retirement Fund- Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Fidelity Freedom Blend Retirement Fund- Class I | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 16.30%
Fidelity Freedom Blend Retirement Fund- Class I | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.70%
Fidelity Freedom Blend Retirement Fund- Class I | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 61.30%
Fidelity Freedom Blend Retirement Fund- Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Freedom Blend Retirement Fund- Class I | AAShortTermFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.40%
Fidelity Advisor Freedom Blend 2035 Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Advisor Freedom Blend 2035 Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Freedom Blend 2035 Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Freedom Blend 2035 Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Advisor Freedom Blend 2035 Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Freedom Blend 2035 Fund - Class C | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 39.80%
Fidelity Advisor Freedom Blend 2035 Fund - Class C | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 30.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class C | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 28.90%
Fidelity Advisor Freedom Blend 2035 Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor Freedom Blend 2040 Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Fidelity Advisor Freedom Blend 2040 Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.40%
Fidelity Advisor Freedom Blend 2040 Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
Fidelity Advisor Freedom Blend 2040 Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Advisor Freedom Blend 2040 Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Freedom Blend 2040 Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2040 Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2040 Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Advisor Freedom Blend 2040 Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Advisor Freedom Blend 2040 Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Advisor Freedom Blend 2040 Fund - Class I | AADomesticEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 48.60%
Fidelity Advisor Freedom Blend 2040 Fund - Class I | AAInternationalEquityFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 36.70%
Fidelity Advisor Freedom Blend 2040 Fund - Class I | AABondFundsMember  
Holdings [Line Items]  
Percent of Net Asset Value 14.30%
Fidelity Advisor Freedom Blend 2040 Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%