485BPOS

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM N-1A
REGISTRATION STATEMENT (No. 033-06516)
		UNDER THE SECURITIES ACT OF 1933	[X]
		Pre-Effective Amendment No. ____	[ ]
		Post-Effective Amendment No. 106	[X]
and
REGISTRATION STATEMENT (No. 811-04707)
		UNDER THE INVESTMENT COMPANY ACT OF 1940	[X]
		Amendment No. 108	[X]
Fidelity Advisor Series II
(Exact Name of Registrant as Specified in Charter)
82 Devonshire St., Boston, Massachusetts 02109
(Address Of Principal Executive Offices) (Zip Code)
Registrant's Telephone Number: 617-563-7000
Scott C. Goebel, Secretary
82 Devonshire Street
Boston, Massachusetts 02109
(Name and Address of Agent for Service)
It is proposed that this filing will become effective
	(X)	immediately upon filing pursuant to paragraph (b).
	( )	on ( ) pursuant to paragraph (b) at 5:30 p.m. Eastern Time.
	( )	60 days after filing pursuant to paragraph (a)(1) at 5:30 p.m. Eastern Time.
	( )	on ( ) pursuant to paragraph (a)(1) of Rule 485 at 5:30 p.m. Eastern Time.
	( )	75 days after filing pursuant to paragraph (a)(2) at 5:30 p.m. Eastern Time.
	( )	on ( ) pursuant to paragraph (a)(2) of Rule 485 at 5:30 p.m. Eastern Time.
If appropriate, check the following box:
	( )	this post-effective amendment designates a new effective date for a previously filed post-effective amendment.

EXHIBIT INDEX

Exhibit	Exhibit No.
XBRL Instance Document	EX-101.INS
XBRL Taxonomy Extension Schema Document	EX-101.SCH
XBRL Taxonomy Extension Calculation Linkbase Document	EX-101.CAL
XBRL Taxonomy Extension Definition Linkbase Document	EX-101.DEF
XBRL Taxonomy Extension Labels Linkbase Document	EX-101.LAB
XBRL Taxonomy Extension Presentation Linkbase Document	EX-101.PRE

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all of the requirements for the effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933 and has duly caused this Post-Effective Amendment Nos. 106 & 108 to the Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Boston, and Commonwealth of Massachusetts, on the 18th day of January, 2013.

	Fidelity Advisor Series II
	By	/s/John R. Hebble
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||		John R. Hebble, President

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.

(Signature)		(Title)	(Date)
/s/John R. Hebble		President and Treasurer	January 18, 2013
John R. Hebble		(Principal Executive Officer)
/s/Christine Reynolds		Chief Financial Officer	January 18, 2013
Christine Reynolds		(Principal Financial Officer)
/s/Abigail P. Johnson		Trustee	January 18, 2013
Abigail P. Johnson
/s/James C. Curvey	*	Trustee	January 18, 2013
James C. Curvey
/s/Albert R. Gamper	*	Trustee	January 18, 2013
Albert R. Gamper
/s/Robert F. Gartland	*	Trustee	January 18, 2013
Robert F. Gartland
/s/Arthur E. Johnson	*	Trustee	January 18, 2013
Arthur E. Johnson
/s/Michael E. Kenneally	*	Trustee	January 18, 2013
Michael E. Kenneally
/s/James H. Keyes	*	Trustee	January 18, 2013
James H. Keyes
/s/Marie L. Knowles	*	Trustee	January 18, 2013
Marie L. Knowles
/s/Kenneth L. Wolfe	*	Trustee	January 18, 2013
Kenneth L. Wolfe

*	By:	/s/Joseph R. Fleming
		Joseph R. Fleming, pursuant to a power of attorney dated February 1, 2011 and filed herewith.

POWER OF ATTORNEY

We, the undersigned Directors or Trustees, as the case may be, of the following investment companies:

  Fidelity Aberdeen Street Trust Fidelity Advisor Series II Fidelity Advisor Series IV Fidelity Boylston Street Trust Fidelity California Municipal Trust Fidelity California Municipal Trust II Fidelity Central Investment Portfolios II LLC Fidelity Charles Street Trust Fidelity Colchester Street Trust Fidelity Court Street Trust Fidelity Court Street Trust II Fidelity Fixed-Income Trust Fidelity Garrison Street Trust Fidelity Hereford Street Trust Fidelity Income Fund   Fidelity Massachusetts Municipal Trust Fidelity Money Market Trust Fidelity Municipal Trust Fidelity Municipal Trust II Fidelity Newbury Street Trust Fidelity New York Municipal Trust Fidelity New York Municipal Trust II Fidelity Oxford Street Trust Fidelity Phillips Street Trust Fidelity Revere Street Trust Fidelity School Street Trust Fidelity Union Street Trust Fidelity Union Street Trust II Variable Insurance Products Fund V

in addition to any other investment company for which Fidelity Management & Research Company ("FMR") or an affiliate acts as investment adviser and for which the undersigned individuals serve as Directors or Trustees (collectively, the "Funds"), hereby revoke all previous powers of attorney we have given to sign and otherwise act in our names and behalf in matters involving any investment company for which FMR or an affiliate acts as investment adviser and hereby constitute and appoint Thomas C. Bogle, Joseph R. Fleming, John V. O'Hanlon, Robert W. Helm and Anthony H. Zacharski, each of them singly, our true and lawful attorneys-in-fact, with full power of substitution, and with full power to each of them, to sign for us and in our names in the appropriate capacities, all Registration Statements of the Funds on Form N-1A, or any successors thereto, any and all subsequent Amendments, Pre-Effective Amendments, or Post-Effective Amendments to said Registration Statements or any successors thereto, and any supplements or other instruments in connection therewith, and generally to do all such things in our names and behalf in connection therewith as said attorneys-in-fact deem necessary or appropriate, to comply with the provisions of the Securities Act of 1933 and the Investment Company Act of 1940, and all related requirements of the Securities and Exchange Commission. We hereby ratify and confirm all that said attorneys-in-fact or their substitutes may do or cause to be done by virtue hereof. This power of attorney is effective for all documents filed on or after February 1, 2011.

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

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

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY ADVISOR SERIES II

Prospectus Date

rr_ProspectusDate

Dec. 29, 2012

A T B C | Fidelity Advisor Municipal Income Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Advisor^® Municipal Income Fund/A, T, B, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks to provide a high current yield exempt from federal income tax.

Expense [Heading]

rr_ExpenseHeading

Fee Table

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

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

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

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The fund 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 6% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

6.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

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

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds.

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

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Normally investing at least 80% of assets in investment-grade municipal securities whose interest is exempt from federal income tax.
• Managing the fund to have similar overall interest rate risk to an index designed to represent Fidelity Management & Research Company (FMR)'s view of how the fund's competitive universe will perform over time.
• Allocating assets across different market sectors and maturities.
• Potentially investing more than 25% of total assets in municipal securities that finance similar types of projects.
• Analyzing the credit quality of the issuer, security-specific features, current and potential future valuation, and trading opportunities to select investments.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• Municipal Market Volatility. The municipal market is volatile and can be significantly affected by adverse tax, legislative, or political changes and the financial condition of the issuers of municipal securities.
• Interest Rate Changes. Interest rate increases can cause the price of a debt security to decrease.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease.

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. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund.

Risk Lose Money [Text]

rr_RiskLoseMoney

You could lose money by investing in the fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

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

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

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

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

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

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

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

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

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

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

Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	7.31%	September 30, 2009
Lowest Quarter Return	-4.34%	December 31, 2010
Year-to-Date Return	6.89%	September 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

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

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

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

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

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

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

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

For the periods ended
December 31, 2011

A T B C | Fidelity Advisor Municipal Income Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

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

rr_MaximumCumulativeSalesChargeOverOfferingPrice

4.00%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

0.37%

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

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.15%

Total annual operating expenses

rr_ExpensesOverAssets

0.77%

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 0.75% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

475

3 years

rr_ExpenseExampleYear03

636

5 years

rr_ExpenseExampleYear05

811

10 years

rr_ExpenseExampleYear10

1,316

1 year

rr_ExpenseExampleNoRedemptionYear01

475

3 years

rr_ExpenseExampleNoRedemptionYear03

636

5 years

rr_ExpenseExampleNoRedemptionYear05

811

10 years

rr_ExpenseExampleNoRedemptionYear10

1,316

2002

rr_AnnualReturn2002

10.14%

2003

rr_AnnualReturn2003

5.67%

2004

rr_AnnualReturn2004

4.69%

2005

rr_AnnualReturn2005

3.50%

2006

rr_AnnualReturn2006

4.58%

2007

rr_AnnualReturn2007

2.61%

2008

rr_AnnualReturn2008

(5.10%)

2009

rr_AnnualReturn2009

13.33%

2010

rr_AnnualReturn2010

2.12%

2011

rr_AnnualReturn2011

10.48%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.89%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

7.31%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2010

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(4.34%)

A T B C | Fidelity Advisor Municipal Income Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

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

rr_MaximumCumulativeSalesChargeOverOfferingPrice

4.00%

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

Management fee

rr_ManagementFeesOverAssets

0.37%

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

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.14%

Total annual operating expenses

rr_ExpensesOverAssets

0.76%

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 0.75% or 0.25%, respectively.

1 year

rr_ExpenseExampleYear01

475

3 years

rr_ExpenseExampleYear03

633

5 years

rr_ExpenseExampleYear05

805

10 years

rr_ExpenseExampleYear10

1,305

1 year

rr_ExpenseExampleNoRedemptionYear01

475

3 years

rr_ExpenseExampleNoRedemptionYear03

633

5 years

rr_ExpenseExampleNoRedemptionYear05

805

10 years

rr_ExpenseExampleNoRedemptionYear10

1,305

A T B C | Fidelity Advisor Municipal Income Fund | Class B

Risk/Return:

rr_RiskReturnAbstract

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

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

5.00%

^[2]

Management fee

rr_ManagementFeesOverAssets

0.37%

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

rr_DistributionAndService12b1FeesOverAssets

0.90%

Other expenses

rr_OtherExpensesOverAssets

0.18%

Total annual operating expenses

rr_ExpensesOverAssets

1.45%

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Declines over 6 years from 5.00% to 0%.

1 year

rr_ExpenseExampleYear01

648

3 years

rr_ExpenseExampleYear03

759

5 years

rr_ExpenseExampleYear05

992

10 years

rr_ExpenseExampleYear10

1,464

1 year

rr_ExpenseExampleNoRedemptionYear01

148

3 years

rr_ExpenseExampleNoRedemptionYear03

459

5 years

rr_ExpenseExampleNoRedemptionYear05

792

10 years

rr_ExpenseExampleNoRedemptionYear10

1,464

A T B C | Fidelity Advisor Municipal Income Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

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

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[3]

Management fee

rr_ManagementFeesOverAssets

0.37%

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

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.17%

Total annual operating expenses

rr_ExpensesOverAssets

1.54%

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

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

1 year

rr_ExpenseExampleYear01

257

3 years

rr_ExpenseExampleYear03

486

5 years

rr_ExpenseExampleYear05

839

10 years

rr_ExpenseExampleYear10

1,834

1 year

rr_ExpenseExampleNoRedemptionYear01

157

3 years

rr_ExpenseExampleNoRedemptionYear03

486

5 years

rr_ExpenseExampleNoRedemptionYear05

839

10 years

rr_ExpenseExampleNoRedemptionYear10

1,834

A T B C | Fidelity Advisor Municipal Income Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

6.06%

Past 5 years

rr_AverageAnnualReturnYear05

3.63%

Past 10 years

rr_AverageAnnualReturnYear10

4.66%

A T B C | Fidelity Advisor Municipal Income Fund | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

6.12%

Past 5 years

rr_AverageAnnualReturnYear05

3.65%

Past 10 years

rr_AverageAnnualReturnYear10

4.61%

A T B C | Fidelity Advisor Municipal Income Fund | Return Before Taxes | Class B

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class B - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

4.69%

Past 5 years

rr_AverageAnnualReturnYear05

3.44%

Past 10 years

rr_AverageAnnualReturnYear10

4.55%

A T B C | Fidelity Advisor Municipal Income Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

8.62%

Past 5 years

rr_AverageAnnualReturnYear05

3.70%

Past 10 years

rr_AverageAnnualReturnYear10

4.24%

A T B C | Fidelity Advisor Municipal Income Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

6.06%

Past 5 years

rr_AverageAnnualReturnYear05

3.61%

Past 10 years

rr_AverageAnnualReturnYear10

4.60%

A T B C | Fidelity Advisor Municipal Income Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

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

Past 1 year

rr_AverageAnnualReturnYear01

5.26%

Past 5 years

rr_AverageAnnualReturnYear05

3.63%

Past 10 years

rr_AverageAnnualReturnYear10

4.55%

A T B C | Fidelity Advisor Municipal Income Fund | Barclays® Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® Municipal Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

10.70%

Past 5 years

rr_AverageAnnualReturnYear05

5.22%

Past 10 years

rr_AverageAnnualReturnYear10

5.38%

A T B C | Fidelity Advisor Municipal Income Fund | Barclays 3+ Year Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays 3+ Year Municipal Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

11.96%

Past 5 years

rr_AverageAnnualReturnYear05

5.48%

Past 10 years

rr_AverageAnnualReturnYear10

5.67%

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 0.75% or 0.25%, respectively.

[2] Declines over 6 years from 5.00% to 0%.

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

XML

A T B C | Fidelity Advisor Municipal Income Fund

Fund Summary

Fund/Class:
Fidelity Advisor^® Municipal Income Fund/A, T, B, C

Investment Objective

The fund seeks to provide a high current yield exempt from federal income tax.

Fee Table

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

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

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees A T B C Fidelity Advisor Municipal Income Fund	Class A		Class T		Class B		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	4.00%		4.00%		none		none
Maximum contingent deferred sales charge (as a % of the lesser of original purchase price or redemption proceeds)	none	[1]	none	[1]	5.00%	[2]	1.00%	[3]

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

Annual Class Operating Expenses A T B C Fidelity Advisor Municipal Income Fund	Class A	Class T	Class B	Class C
Management fee	0.37%	0.37%	0.37%	0.37%
Distribution and/or Service (12b-1) fees	0.25%	0.25%	0.90%	1.00%
Other expenses	0.15%	0.14%	0.18%	0.17%
Total annual operating expenses	0.77%	0.76%	1.45%	1.54%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual 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:

Sell All Shares

Expense Example A T B C Fidelity Advisor Municipal Income Fund (USD $)	Class A	Class T	Class B	Class C
1 year	475	475	648	257
3 years	636	633	759	486
5 years	811	805	992	839
10 years	1,316	1,305	1,464	1,834

Hold Shares

Expense Example, No Redemption A T B C Fidelity Advisor Municipal Income Fund (USD $)	Class A	Class T	Class B	Class C
1 year	475	475	148	157
3 years	636	633	459	486
5 years	811	805	792	839
10 years	1,316	1,305	1,464	1,834

Portfolio Turnover

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 6% of the average value of its portfolio.

Principal Investment Strategies

• Normally investing at least 80% of assets in investment-grade municipal securities whose interest is exempt from federal income tax.
• Managing the fund to have similar overall interest rate risk to an index designed to represent Fidelity Management & Research Company (FMR)'s view of how the fund's competitive universe will perform over time.
• Allocating assets across different market sectors and maturities.
• Potentially investing more than 25% of total assets in municipal securities that finance similar types of projects.
• Analyzing the credit quality of the issuer, security-specific features, current and potential future valuation, and trading opportunities to select investments.

Principal Investment Risks

• Municipal Market Volatility. The municipal market is volatile and can be significantly affected by adverse tax, legislative, or political changes and the financial condition of the issuers of municipal securities.
• Interest Rate Changes. Interest rate increases can cause the price of a debt security to decrease.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease.

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. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund.

Performance

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

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

Year-by-Year Returns

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

Calendar Years

During the periods shown in the chart for Class A:	Returns	Quarter ended
Highest Quarter Return	7.31%	September 30, 2009
Lowest Quarter Return	-4.34%	December 31, 2010
Year-to-Date Return	6.89%	September 30, 2012

Average Annual Returns

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

For the periods ended
December 31, 2011

Average Annual Total Returns A T B C Fidelity Advisor Municipal Income Fund	Past 1 year	Past 5 years	Past 10 years
Class A Return Before Taxes	6.06%	3.63%	4.66%
Class A Return After Taxes on Distributions	6.06%	3.61%	4.60%
Class A Return After Taxes on Distributions and Sale of Fund Shares	5.26%	3.63%	4.55%
Class T Return Before Taxes	6.12%	3.65%	4.61%
Class B Return Before Taxes	4.69%	3.44%	4.55%
Class C Return Before Taxes	8.62%	3.70%	4.24%
Barclays® Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)	10.70%	5.22%	5.38%
Barclays 3+ Year Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)	11.96%	5.48%	5.67%

[1] Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 0.75% or 0.25%, respectively.

[2] Declines over 6 years from 5.00% to 0%.

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

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	FIDELITY ADVISOR SERIES II
Prospectus Date	rr_ProspectusDate	Dec. 29, 2012
Document Creation Date	dei_DocumentCreationDate	Dec. 27, 2012

XML

Document and Entity Information	12 Months Ended
	Dec. 29, 2012
Risk/Return:
Document Type	485BPOS
Document Period End Date	Oct. 31, 2012
Registrant Name	FIDELITY ADVISOR SERIES II
Central Index Key	0000795422
Amendment Flag	false
Document Creation Date	Dec. 27, 2012
Document Effective Date	Dec. 29, 2012
Prospectus Date	Dec. 29, 2012

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FIDELITY ADVISOR SERIES II

Prospectus Date

rr_ProspectusDate

Dec. 29, 2012

Inst | Fidelity Advisor Municipal Income Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:
Fidelity Advisor^® Municipal Income Fund/Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks to provide a high current yield exempt from federal income tax.

Expense [Heading]

rr_ExpenseHeading

Fee Table

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

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

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees
(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The fund 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 6% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

6.00%

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds.

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

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Normally investing at least 80% of assets in investment-grade municipal securities whose interest is exempt from federal income tax.
• Managing the fund to have similar overall interest rate risk to an index designed to represent Fidelity Management & Research Company (FMR)'s view of how the fund's competitive universe will perform over time.
• Allocating assets across different market sectors and maturities.
• Potentially investing more than 25% of total assets in municipal securities that finance similar types of projects.
• Analyzing the credit quality of the issuer, security-specific features, current and potential future valuation, and trading opportunities to select investments.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• Municipal Market Volatility. The municipal market is volatile and can be significantly affected by adverse tax, legislative, or political changes and the financial condition of the issuers of municipal securities.
• Interest Rate Changes. Interest rate increases can cause the price of a debt security to decrease.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease.

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. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund.

Risk Lose Money [Text]

rr_RiskLoseMoney

You could lose money by investing in the fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

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

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

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

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

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

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

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisor.fidelity.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

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

Bar Chart [Heading]

rr_BarChartHeading

Year-by-Year Returns
Calendar Years

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	7.32%	September 30, 2009
Lowest Quarter Return	-4.30%	December 31, 2010
Year-to-Date Return	7.04%	September 30, 2012

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances.

For the periods ended
December 31, 2011

Inst | Fidelity Advisor Municipal Income Fund | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Shareholder fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management fee

rr_ManagementFeesOverAssets

0.37%

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

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.16%

Total annual operating expenses

rr_ExpensesOverAssets

0.53%

1 year

rr_ExpenseExampleYear01

54

3 years

rr_ExpenseExampleYear03

170

5 years

rr_ExpenseExampleYear05

296

10 years

rr_ExpenseExampleYear10

665

2002

rr_AnnualReturn2002

10.24%

2003

rr_AnnualReturn2003

5.84%

2004

rr_AnnualReturn2004

4.87%

2005

rr_AnnualReturn2005

3.69%

2006

rr_AnnualReturn2006

4.66%

2007

rr_AnnualReturn2007

2.84%

2008

rr_AnnualReturn2008

(4.89%)

2009

rr_AnnualReturn2009

13.57%

2010

rr_AnnualReturn2010

2.37%

2011

rr_AnnualReturn2011

10.79%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year-to-Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

7.04%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

7.32%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2010

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(4.30%)

Inst | Fidelity Advisor Municipal Income Fund | Return Before Taxes | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

10.79%

Past 5 years

rr_AverageAnnualReturnYear05

4.73%

Past 10 years

rr_AverageAnnualReturnYear10

5.28%

Inst | Fidelity Advisor Municipal Income Fund | Return After Taxes on Distributions | Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

10.78%

Past 5 years

rr_AverageAnnualReturnYear05

4.71%

Past 10 years

rr_AverageAnnualReturnYear10

5.22%

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

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

8.49%

Past 5 years

rr_AverageAnnualReturnYear05

4.61%

Past 10 years

rr_AverageAnnualReturnYear10

5.14%

Inst | Fidelity Advisor Municipal Income Fund | Barclays® Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays^® Municipal Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

10.70%

Past 5 years

rr_AverageAnnualReturnYear05

5.22%

Past 10 years

rr_AverageAnnualReturnYear10

5.38%

Inst | Fidelity Advisor Municipal Income Fund | Barclays 3+ Year Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays 3+ Year Municipal Bond Index

Past 1 year

rr_AverageAnnualReturnYear01

11.96%

Past 5 years

rr_AverageAnnualReturnYear05

5.48%

Past 10 years

rr_AverageAnnualReturnYear10

5.67%

XML

Inst | Fidelity Advisor Municipal Income Fund

Fund Summary

Fund/Class:
Fidelity Advisor^® Municipal Income Fund/Institutional

Investment Objective

The fund seeks to provide a high current yield exempt from federal income tax.

Fee Table

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

Shareholder fees
(fees paid directly from your investment)

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

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

Annual Class Operating Expenses	Inst Fidelity Advisor Municipal Income Fund Institutional Class
Management fee	0.37%
Distribution and/or Service (12b-1) fees	none
Other expenses	0.16%
Total annual operating expenses	0.53%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual 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:

Expense Example (USD $)	Inst Fidelity Advisor Municipal Income Fund Institutional Class
1 year	54
3 years	170
5 years	296
10 years	665

Portfolio Turnover

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 6% of the average value of its portfolio.

Principal Investment Strategies

• Normally investing at least 80% of assets in investment-grade municipal securities whose interest is exempt from federal income tax.
• Managing the fund to have similar overall interest rate risk to an index designed to represent Fidelity Management & Research Company (FMR)'s view of how the fund's competitive universe will perform over time.
• Allocating assets across different market sectors and maturities.
• Potentially investing more than 25% of total assets in municipal securities that finance similar types of projects.
• Analyzing the credit quality of the issuer, security-specific features, current and potential future valuation, and trading opportunities to select investments.

Principal Investment Risks

• Municipal Market Volatility. The municipal market is volatile and can be significantly affected by adverse tax, legislative, or political changes and the financial condition of the issuers of municipal securities.
• Interest Rate Changes. Interest rate increases can cause the price of a debt security to decrease.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease.

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. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund.

Performance

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

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

Year-by-Year Returns
Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	7.32%	September 30, 2009
Lowest Quarter Return	-4.30%	December 31, 2010
Year-to-Date Return	7.04%	September 30, 2012

Average Annual Returns

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances.

For the periods ended
December 31, 2011

Average Annual Total Returns Inst Fidelity Advisor Municipal Income Fund	Past 1 year	Past 5 years	Past 10 years
Institutional Class Return Before Taxes	10.79%	4.73%	5.28%
Institutional Class Return After Taxes on Distributions	10.78%	4.71%	5.22%
Institutional Class Return After Taxes on Distributions and Sale of Fund Shares	8.49%	4.61%	5.14%
Barclays® Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)	10.70%	5.22%	5.38%
Barclays 3+ Year Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)	11.96%	5.48%	5.67%