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    <rr:ExpenseHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">         Fee Table

</rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">                  The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund. In addition to the fees and expenses described below, your broker may also require you to pay brokerage commissions on purchases
            and sales of certain share classes of the fund.

                  You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least  $50,000  in the fund or certain other Fidelity&#xae; funds. More information about these and other discounts is available from your investment professional and in the "Fund Distribution"
               section beginning on page 33 of the prospectus.  Different intermediaries may provide additional waivers or reductions of the sales charge. Please see &#x93;Sales Charge Waiver
            Policies Applied by Certain Intermediaries&#x94; in the &#x93;Appendix&#x94; section of the prospectus.


</rr:ExpenseNarrativeTextBlock>
    <rr:ExpenseBreakpointDiscounts contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least  $50,000  in the fund or certain other Fidelity&#xae; funds. More information about these and other discounts is available from your investment professional and in the "Fund Distribution"
               section beginning on page 33 of the prospectus.</rr:ExpenseBreakpointDiscounts>
    <rr:ExpenseBreakpointMinimumInvestmentRequiredAmount
      contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">50000</rr:ExpenseBreakpointMinimumInvestmentRequiredAmount>
    <rr:ShareholderFeesCaption contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">                  Shareholder fees
                  (fees paid directly from your investment)

</rr:ShareholderFeesCaption>
    <rr:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0400</rr:MaximumCumulativeSalesChargeOverOfferingPrice>
    <rr:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="S000005152_C000014113_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0400</rr:MaximumCumulativeSalesChargeOverOfferingPrice>
    <rr:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="S000005152_C000014112_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0</rr:MaximumCumulativeSalesChargeOverOfferingPrice>
    <rr:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="S000005152_C000014114_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0</rr:MaximumCumulativeSalesChargeOverOfferingPrice>
    <rr:MaximumCumulativeSalesChargeOverOfferingPrice
      contextRef="S000005152_C000204998_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0</rr:MaximumCumulativeSalesChargeOverOfferingPrice>
    <rr:MaximumDeferredSalesChargeOverOther
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      id="id_footnote_elem_780034011_10"
      unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOther>
    <rr:MaximumDeferredSalesChargeOverOther
      contextRef="S000005152_C000014113_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      id="id_footnote_elem_780034011_12"
      unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOther>
    <rr:MaximumDeferredSalesChargeOverOther
      contextRef="S000005152_C000014112_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      id="id_footnote_elem_780034011_14"
      unitRef="pure">0.0100</rr:MaximumDeferredSalesChargeOverOther>
    <rr:MaximumDeferredSalesChargeOverOther
      contextRef="S000005152_C000014114_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOther>
    <rr:MaximumDeferredSalesChargeOverOther
      contextRef="S000005152_C000204998_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOther>
    <rr:ExpensesDeferredChargesTextBlock contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Class A and Class M purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class
                  M purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.</rr:ExpensesDeferredChargesTextBlock>
    <rr:ExpensesDeferredChargesTextBlock contextRef="S000005152_C000014112_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">On Class C shares redeemed less than one year after purchase.</rr:ExpensesDeferredChargesTextBlock>
    <rr:OperatingExpensesCaption contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">                  Annual Operating Expenses
                  (expenses that you pay each year as a % of the value of your investment)

</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0055</rr:ManagementFeesOverAssets>
    <rr:ManagementFeesOverAssets
      contextRef="S000005152_C000014113_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0055</rr:ManagementFeesOverAssets>
    <rr:ManagementFeesOverAssets
      contextRef="S000005152_C000014112_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0055</rr:ManagementFeesOverAssets>
    <rr:ManagementFeesOverAssets
      contextRef="S000005152_C000014114_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0055</rr:ManagementFeesOverAssets>
    <rr:ManagementFeesOverAssets
      contextRef="S000005152_C000204998_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0055</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0025</rr:DistributionAndService12b1FeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000005152_C000014113_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0025</rr:DistributionAndService12b1FeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000005152_C000014112_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0100</rr:DistributionAndService12b1FeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000005152_C000014114_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000005152_C000204998_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0017</rr:OtherExpensesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000005152_C000014113_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0016</rr:OtherExpensesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000005152_C000014112_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0017</rr:OtherExpensesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000005152_C000014114_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0016</rr:OtherExpensesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000005152_C000204998_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0006</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0097</rr:ExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000005152_C000014113_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0096</rr:ExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000005152_C000014112_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0172</rr:ExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000005152_C000014114_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0071</rr:ExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000005152_C000204998_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0061</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">                  This example helps compare the cost of investing in the fund with the cost of investing in other funds.

                  Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual
            operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses
            or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end
            of each time period indicated and if you hold your shares:


</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">495</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleNoRedemptionYear01
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">495</rr:ExpenseExampleNoRedemptionYear01>
    <rr:ExpenseExampleYear01
      contextRef="S000005152_C000014113_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">494</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleNoRedemptionYear01
      contextRef="S000005152_C000014113_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">494</rr:ExpenseExampleNoRedemptionYear01>
    <rr:ExpenseExampleYear01
      contextRef="S000005152_C000014112_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">275</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleNoRedemptionYear01
      contextRef="S000005152_C000014112_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">175</rr:ExpenseExampleNoRedemptionYear01>
    <rr:ExpenseExampleYear01
      contextRef="S000005152_C000014114_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">73</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleNoRedemptionYear01
      contextRef="S000005152_C000014114_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">73</rr:ExpenseExampleNoRedemptionYear01>
    <rr:ExpenseExampleYear01
      contextRef="S000005152_C000204998_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">62</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleNoRedemptionYear01
      contextRef="S000005152_C000204998_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">62</rr:ExpenseExampleNoRedemptionYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">697</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleNoRedemptionYear03
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">697</rr:ExpenseExampleNoRedemptionYear03>
    <rr:ExpenseExampleYear03
      contextRef="S000005152_C000014113_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">694</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleNoRedemptionYear03
      contextRef="S000005152_C000014113_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">694</rr:ExpenseExampleNoRedemptionYear03>
    <rr:ExpenseExampleYear03
      contextRef="S000005152_C000014112_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">542</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleNoRedemptionYear03
      contextRef="S000005152_C000014112_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">542</rr:ExpenseExampleNoRedemptionYear03>
    <rr:ExpenseExampleYear03
      contextRef="S000005152_C000014114_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">227</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleNoRedemptionYear03
      contextRef="S000005152_C000014114_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">227</rr:ExpenseExampleNoRedemptionYear03>
    <rr:ExpenseExampleYear03
      contextRef="S000005152_C000204998_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">195</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleNoRedemptionYear03
      contextRef="S000005152_C000204998_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">195</rr:ExpenseExampleNoRedemptionYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">915</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleNoRedemptionYear05
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">915</rr:ExpenseExampleNoRedemptionYear05>
    <rr:ExpenseExampleYear05
      contextRef="S000005152_C000014113_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">910</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleNoRedemptionYear05
      contextRef="S000005152_C000014113_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">910</rr:ExpenseExampleNoRedemptionYear05>
    <rr:ExpenseExampleYear05
      contextRef="S000005152_C000014112_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">933</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleNoRedemptionYear05
      contextRef="S000005152_C000014112_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">933</rr:ExpenseExampleNoRedemptionYear05>
    <rr:ExpenseExampleYear05
      contextRef="S000005152_C000014114_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">395</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleNoRedemptionYear05
      contextRef="S000005152_C000014114_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">395</rr:ExpenseExampleNoRedemptionYear05>
    <rr:ExpenseExampleYear05
      contextRef="S000005152_C000204998_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">340</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleNoRedemptionYear05
      contextRef="S000005152_C000204998_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">340</rr:ExpenseExampleNoRedemptionYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">1542</rr:ExpenseExampleYear10>
    <rr:ExpenseExampleNoRedemptionYear10
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">1542</rr:ExpenseExampleNoRedemptionYear10>
    <rr:ExpenseExampleYear10
      contextRef="S000005152_C000014113_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">1531</rr:ExpenseExampleYear10>
    <rr:ExpenseExampleNoRedemptionYear10
      contextRef="S000005152_C000014113_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">1531</rr:ExpenseExampleNoRedemptionYear10>
    <rr:ExpenseExampleYear10
      contextRef="S000005152_C000014112_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">1831</rr:ExpenseExampleYear10>
    <rr:ExpenseExampleNoRedemptionYear10
      contextRef="S000005152_C000014112_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">1831</rr:ExpenseExampleNoRedemptionYear10>
    <rr:ExpenseExampleYear10
      contextRef="S000005152_C000014114_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">883</rr:ExpenseExampleYear10>
    <rr:ExpenseExampleNoRedemptionYear10
      contextRef="S000005152_C000014114_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">883</rr:ExpenseExampleNoRedemptionYear10>
    <rr:ExpenseExampleYear10
      contextRef="S000005152_C000204998_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">762</rr:ExpenseExampleYear10>
    <rr:ExpenseExampleNoRedemptionYear10
      contextRef="S000005152_C000204998_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="0"
      unitRef="usd">762</rr:ExpenseExampleNoRedemptionYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">         Portfolio Turnover

</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">         The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are
            held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 94%  of the average value of its portfolio.


</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.94</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">         Principal Investment Strategies

</rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">
            Investing primarily in debt securities, including lower-quality debt securities (those of less than investment-grade quality,
               also referred to as high yield debt securities or junk bonds).



            Allocating the fund's assets among four general investment categories: high yield securities, U.S. Government and investment-grade
               securities, emerging market securities, and foreign developed market securities.



            Potentially investing in equity securities.


            Using a neutral mix of approximately 45% high yield, 30% U.S. Government and investment-grade, 15% emerging markets, and 10%
               foreign developed markets.



            Analyzing a security's structural features and current pricing, its issuer's potential for success, and the credit, currency,
               and economic risks of the security and its issuer to select investments.



            Hedging the fund's foreign currency exposures utilizing forward foreign currency exchange contracts, although not all of the
               fund&#x92;s foreign currency exposure will be hedged.



            Engaging in transactions that have a leveraging effect on the fund, including investments in derivatives - such as swaps (interest
               rate, total return, and credit default), options, and futures contracts - and forward-settling securities, to adjust the fund's
               risk exposure.



            Investing in Fidelity's central funds (specialized investment vehicles used by Fidelity&#xae; funds to invest in particular security types or investment disciplines) consistent with the asset classes discussed above.



</rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">         Principal Investment Risks

</rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">
            Stock Market Volatility.&#160;Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or
               economic developments. Different parts of the market, including different market sectors, and different types of securities
               can react differently to these developments.



            Interest Rate Changes.&#160;Interest rate increases can cause the price of a debt security to decrease.



            Foreign Exposure.&#160;Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse
               issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. The extent of economic development; political stability; market depth, infrastructure, and capitalization; and regulatory
               oversight can be less than in more developed markets. Emerging markets typically have less established legal, accounting and
               financial reporting systems than those in more developed markets, which may reduce the scope or quality of financial information
               available to investors. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties
               and can be extremely volatile. Foreign exchange rates also can be extremely volatile.



            Foreign Currency Transactions.&#160;Although a forward foreign currency exchange contract is used to reduce or hedge a fund&#x92;s exposure to changes in the
               value of the currency, suitable hedging transactions may not be available in all circumstances, may not be successful, and
               may eliminate any chance for the fund to benefit from favorable fluctuations in relevant foreign currencies.



            Prepayment.&#160;The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility
               if interest rates change.



            Issuer-Specific Changes.&#160;The value of an individual security or particular type of security can be more volatile than, and can perform differently
               from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security
               can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities
               or junk bonds) and certain types of other securities involve greater risk of default or price changes due to changes in the
               credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity
               to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.



            Leverage Risk.&#160;Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.


                  An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation
               or any other government agency.  You could lose money by investing in the fund.


</rr:RiskNarrativeTextBlock>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation
               or any other government agency.</rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">You could lose money by investing in the fund.</rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">         Performance

</rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">                  The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance
               of the fund's shares to the performance of a securities market index and a hypothetical composite of market indexes over various
               periods of time.  The indexes have characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional
            Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

                  Visit institutional.fidelity.com  for more recent performance information.


</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance
               of the fund's shares to the performance of a securities market index and a hypothetical composite of market indexes over various
               periods of time.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Past performance (before and after taxes) is not an indication of future performance.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">institutional.fidelity.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">         Year-by-Year Returns

</rr:BarChartHeading>
    <rr:BarChartNarrativeTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">         The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be
               lower than those shown.


</rr:BarChartNarrativeTextBlock>
    <rr:BarChartDoesNotReflectSalesLoads contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be
               lower than those shown.</rr:BarChartDoesNotReflectSalesLoads>
    <rr:HighestQuarterlyReturnLabel contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Highest Quarter Return</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0805</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Lowest Quarter Return</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">-0.0862</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000005152_C000014110_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Average Annual Returns

</rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">         Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.  After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect
               the impact of state or local taxes.  After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.  Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement,
               such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).  Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a
               tax benefit of realizing a capital loss upon the sale of fund shares.


</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableDoesReflectSalesLoads contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.</rr:PerformanceTableDoesReflectSalesLoads>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect
               the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableOneClassOfAfterTaxShown contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.</rr:PerformanceTableOneClassOfAfterTaxShown>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement,
               such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a
               tax benefit of realizing a capital loss upon the sale of fund shares.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000005152_C000014110_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Class A - Return Before Taxes</rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000005152_C000014110_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">-0.0056</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000005152_C000014110_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0432</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000005152_C000014110_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0418</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnLabel contextRef="S000005152_C000014110_AfterTaxesOnDistributions_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Return After Taxes on Distributions</rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000005152_C000014110_AfterTaxesOnDistributions_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">-0.0209</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000005152_C000014110_AfterTaxesOnDistributions_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0272</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000005152_C000014110_AfterTaxesOnDistributions_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0256</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnLabel contextRef="S000005152_C000014110_AfterTaxesOnDistributionsAndSales_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Return After Taxes on Distributions and Sale of Fund Shares</rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000005152_C000014110_AfterTaxesOnDistributionsAndSales_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">-0.0014</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000005152_C000014110_AfterTaxesOnDistributionsAndSales_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0266</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000005152_C000014110_AfterTaxesOnDistributionsAndSales_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0255</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnLabel contextRef="S000005152_C000014113_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Class M - Return Before Taxes</rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000005152_C000014113_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">-0.0056</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000005152_C000014113_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0433</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000005152_C000014113_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0419</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnLabel contextRef="S000005152_C000014112_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Class C - Return Before Taxes</rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000005152_C000014112_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0182</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000005152_C000014112_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0441</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000005152_C000014112_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0398</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnLabel contextRef="S000005152_C000014114_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Class I - Return Before Taxes</rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000005152_C000014114_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0391</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000005152_C000014114_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0544</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000005152_C000014114_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0487</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnLabel contextRef="S000005152_C000204998_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Class Z - Return Before Taxes</rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000005152_C000204998_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0392</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000005152_C000204998_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      id="id_footnote_elem_780034372_138"
      unitRef="pure">0.0606</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear10
      contextRef="S000005152_C000204998_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      unitRef="pure"
      xsi:nil="true"/>
    <rr:AverageAnnualReturnInceptionDate contextRef="S000005152_C000204998_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">2018-10-02</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnLabel contextRef="S000005152_IndexLB091_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Bloomberg U.S. Universal Bond Index</rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000005152_IndexLB091_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">-0.0110</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000005152_IndexLB091_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0384</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000005152_IndexLB091_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0331</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnLabel contextRef="S000005152_IndexF0097_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member">Fidelity Strategic Income Composite Index&#x2120;</rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000005152_IndexF0097_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0125</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000005152_IndexF0097_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0465</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000005152_IndexF0097_D1231FidelityAdvisorStrategicIncomeFundAMCIZPRO16Member"
      decimals="4"
      unitRef="pure">0.0442</rr:AverageAnnualReturnYear10>
    <rr:RiskReturnHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">         Fund Summary
                  Fund/Class:Fidelity Advisor&#xae; Strategic Income Fund/Fidelity&#xae; Strategic Income Fund

</rr:RiskReturnHeading>
    <rr:ObjectiveHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">         Investment Objective

</rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">         The fund seeks a high level of current income. The fund may also seek capital appreciation.

</rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">         Fee Table

</rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">         The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund.

</rr:ExpenseNarrativeTextBlock>
    <rr:ShareholderFeesCaption contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">         Shareholder fees

</rr:ShareholderFeesCaption>
    <rr:ShareholderFeeOther
      contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="0"
      unitRef="usd">0</rr:ShareholderFeeOther>
    <rr:OperatingExpensesCaption contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">                  Annual Operating Expenses
                  (expenses that you pay each year as a % of the value of your investment)

</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000005152_C000200078_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      unitRef="pure">0.0055</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000005152_C000200078_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000005152_C000200078_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      unitRef="pure">0.0011</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000005152_C000200078_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      unitRef="pure">0.0066</rr:ExpensesOverAssets>
    <rr:ExpenseExampleNarrativeTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">                  This example helps compare the cost of investing in the fund with the cost of investing in other funds.

                  Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual
            operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses
            or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end
            of each time period indicated:


</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000005152_C000200078_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="0"
      unitRef="usd">67</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000005152_C000200078_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="0"
      unitRef="usd">211</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000005152_C000200078_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="0"
      unitRef="usd">368</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000005152_C000200078_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="0"
      unitRef="usd">822</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">         Portfolio Turnover

</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">         The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are
            held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 94%  of the average value of its portfolio.


</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      unitRef="pure">0.94</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">         Principal Investment Strategies

</rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">
            Investing primarily in debt securities, including lower-quality debt securities (those of less than investment-grade quality,
               also referred to as high yield debt securities or junk bonds).



            Allocating the fund's assets among four general investment categories: high yield securities, U.S. Government and investment-grade
               securities, emerging market securities, and foreign developed market securities.



            Potentially investing in equity securities.


            Using a neutral mix of approximately 45% high yield, 30% U.S. Government and investment-grade, 15% emerging markets, and 10%
               foreign developed markets.



            Analyzing a security's structural features and current pricing, its issuer's potential for success, and the credit, currency,
               and economic risks of the security and its issuer to select investments.



            Hedging the fund's foreign currency exposures utilizing forward foreign currency exchange contracts, although not all of the
               fund&#x92;s foreign currency exposure will be hedged.



            Engaging in transactions that have a leveraging effect on the fund, including investments in derivatives - such as swaps (interest
               rate, total return, and credit default), options, and futures contracts - and forward-settling securities, to adjust the fund's
               risk exposure.



            Investing in Fidelity's central funds (specialized investment vehicles used by Fidelity&#xae; funds to invest in particular security types or investment disciplines) consistent with the asset classes discussed above.



</rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">         Principal Investment Risks

</rr:RiskHeading>
    <rr:RiskNarrativeTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">
            Stock Market Volatility.&#160;Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or
               economic developments. Different parts of the market, including different market sectors, and different types of securities
               can react differently to these developments.



            Interest Rate Changes.&#160;Interest rate increases can cause the price of a debt security to decrease.



            Foreign Exposure.&#160;Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse
               issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. The extent of economic development; political stability; market depth, infrastructure, and capitalization; and regulatory
               oversight can be less than in more developed markets. Emerging markets typically have less established legal, accounting and
               financial reporting systems than those in more developed markets, which may reduce the scope or quality of financial information
               available to investors. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties
               and can be extremely volatile. Foreign exchange rates also can be extremely volatile.



            Foreign Currency Transactions.&#160;Although a forward foreign currency exchange contract is used to reduce or hedge a fund&#x92;s exposure to changes in the
               value of the currency, suitable hedging transactions may not be available in all circumstances, may not be successful, and
               may eliminate any chance for the fund to benefit from favorable fluctuations in relevant foreign currencies.



            Prepayment.&#160;The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility
               if interest rates change.



            Issuer-Specific Changes.&#160;The value of an individual security or particular type of security can be more volatile than, and can perform differently
               from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security
               can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities
               or junk bonds) and certain types of other securities involve greater risk of default or price changes due to changes in the
               credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity
               to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.



            Leverage Risk.&#160;Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.


                  An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation
               or any other government agency.  You could lose money by investing in the fund.


</rr:RiskNarrativeTextBlock>
    <rr:RiskNotInsuredDepositoryInstitution contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation
               or any other government agency.</rr:RiskNotInsuredDepositoryInstitution>
    <rr:RiskLoseMoney contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">You could lose money by investing in the fund.</rr:RiskLoseMoney>
    <rr:BarChartAndPerformanceTableHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">         Performance

</rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">                  The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance
               of the fund's shares to the performance of a securities market index and a hypothetical composite of market indexes over various
               periods of time.  The indexes have characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional
            Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

                  Visit www.fidelity.com  for more recent performance information.


</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance
               of the fund's shares to the performance of a securities market index and a hypothetical composite of market indexes over various
               periods of time.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">Past performance (before and after taxes) is not an indication of future performance.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">www.fidelity.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:BarChartHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">         Year-by-Year Returns

</rr:BarChartHeading>
    <rr:HighestQuarterlyReturnLabel contextRef="S000005152_C000200078_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">Highest Quarter Return</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000005152_C000200078_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      unitRef="pure">0.0811</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate contextRef="S000005152_C000200078_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel contextRef="S000005152_C000200078_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">Lowest Quarter Return</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000005152_C000200078_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      unitRef="pure">-0.0850</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate contextRef="S000005152_C000200078_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">Average Annual Returns

</rr:PerformanceTableHeading>
    <rr:PerformanceTableNarrativeTextBlock contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">         After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect
               the impact of state or local taxes.  Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement,
               such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).  Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a
               tax benefit of realizing a capital loss upon the sale of fund shares.


</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect
               the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement,
               such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a
               tax benefit of realizing a capital loss upon the sale of fund shares.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:AverageAnnualReturnLabel contextRef="S000005152_C000200078_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">Return Before Taxes</rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000005152_C000200078_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      unitRef="pure">0.0396</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000005152_C000200078_ReturnBeforeTaxes_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      id="id_footnote_elem_780038728_187"
      unitRef="pure">0.0518</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000005152_C000200078_AfterTaxesOnDistributions_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">Return After Taxes on Distributions</rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000005152_C000200078_AfterTaxesOnDistributions_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      unitRef="pure">0.0224</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000005152_C000200078_AfterTaxesOnDistributions_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      id="id_footnote_elem_780038728_190"
      unitRef="pure">0.0345</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000005152_C000200078_AfterTaxesOnDistributionsAndSales_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">Return After Taxes on Distributions and Sale of Fund Shares</rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000005152_C000200078_AfterTaxesOnDistributionsAndSales_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      unitRef="pure">0.0253</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000005152_C000200078_AfterTaxesOnDistributionsAndSales_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      id="id_footnote_elem_780038728_193"
      unitRef="pure">0.0329</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000005152_IndexLB091_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">Bloomberg U.S. Universal Bond Index</rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000005152_IndexLB091_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      unitRef="pure">-0.0110</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000005152_IndexLB091_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      id="id_footnote_elem_780038728_196"
      unitRef="pure">0.0450</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnLabel contextRef="S000005152_IndexF0097_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">Fidelity Strategic Income Composite Index&#x2120;</rr:AverageAnnualReturnLabel>
    <rr:AverageAnnualReturnYear01
      contextRef="S000005152_IndexF0097_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      unitRef="pure">0.0125</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000005152_IndexF0097_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member"
      decimals="4"
      id="id_footnote_elem_780038728_199"
      unitRef="pure">0.0445</rr:AverageAnnualReturnSinceInception>
    <rr:AnnualReturnInceptionDate contextRef="S000005152_D1231FidelityAdvisorStrategicIncomeFundRetailPRO10Member">2018-04-13</rr:AnnualReturnInceptionDate>
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        <link:footnote id="footnote_770757807" xlink:label="footnote_770757807" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:p style="font: 11px Arial, Helvetica, sans-serif;"><xhtml:sup>(a)</xhtml:sup><xhtml:i>Class A and Class M purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class
                  M purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively. </xhtml:i></xhtml:p>

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        <link:footnote id="footnote_770757808" xlink:label="footnote_770757808" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:p style="font: 11px Arial, Helvetica, sans-serif;"><xhtml:sup>(b)</xhtml:sup><xhtml:i>On Class C shares redeemed less than one year after purchase. </xhtml:i></xhtml:p>

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        <link:footnote id="footnote_418130955" xlink:label="footnote_418130955" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:p style="font: 11px Arial, Helvetica, sans-serif;"><xhtml:sup>(a)</xhtml:sup><xhtml:i>Since inception October 2, 2018.</xhtml:i></xhtml:p>

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        <link:footnote id="footnote_669505105" xlink:label="footnote_669505105" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US"><xhtml:p style="font: 11px Arial, Helvetica, sans-serif;"><xhtml:sup>(a)</xhtml:sup><xhtml:i>From April 13, 2018 </xhtml:i></xhtml:p>

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