XML 11 R13.htm IDEA: XBRL DOCUMENT  v2.3.0.11
Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Document Type dei_DocumentType 485BPOS
Document Period End Date dei_DocumentPeriodEndDate Mar. 31, 2011
Registrant Name dei_EntityRegistrantName FIDELITY MAGELLAN FUND
Central Index Key dei_EntityCentralIndexKey 0000061397
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate May 26, 2011
Document Effective Date dei_DocumentEffectiveDate May 28, 2011
Prospectus Date rr_ProspectusDate May 28, 2011
Retail | Fidelity Magellan Fund
  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading
Fund Summary
Fund/Class:
Fidelity® Magellan® Fund/Fidelity Magellan Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The fund seeks capital appreciation.
Fee Table fmf61397_FundFeesAndExpensesAbstract  
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 and hold shares of the fund.
Shareholder fees rr_ShareholderFeesAbstract  
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder fees (fees paid directly from your investment)
Annual class operating expenses rr_OperatingExpensesAbstract  
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual class operating expenses (expenses that you pay each year as a % of the value of your investment)
Example rr_ExpenseExampleAbstract  
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:
Portfolio Turnover fmf61397_PortfolioTurnoverAltAbstract  
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 42% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 42.00%
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
  • Normally investing primarily in common stocks.
  • Investing in domestic and foreign issuers.
  • Investing in either "growth" stocks or "value" stocks or both.
  • Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions to select investments.
Risk [Heading] rr_RiskHeading Principal Investment Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
  • Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
  • Foreign Exposure. Foreign 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.
  • 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.

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.
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.
Risk Lose Money [Text] rr_RiskLoseMoney You could lose money by investing in the fund.
Performance fmf61397_FundPastPerformanceAbstract  
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 over various periods of time. The index description appears in the Additional Information about the Index section of the prospectus. Past performance (before and after taxes) is not an indication of future performance.

Visit www.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 over various periods of time.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) is not an indication of future performance.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.fidelity.com
Annual Total Returns rr_BarChartTableAbstract  
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 Return19.09%June 30, 2009
Lowest Quarter Return-27.07%December 31, 2008
Year-to-Date Return5.43%March 31, 2011
Average Annual Returns rr_AverageAnnualReturnAbstract  
Performance Table Heading rr_PerformanceTableHeading Average Annual Returns
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. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. 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, 2010
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 Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.
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.
Retail | Fidelity Magellan Fund | Fidelity Magellan Fund Class
  
Shareholder fees rr_ShareholderFeesAbstract  
Shareholder fees (fees paid directly from your investment) rr_ShareholderFeeOther none
Annual class operating expenses rr_OperatingExpensesAbstract  
Management fee (fluctuates based on the fund's performance relative to a securities market index) rr_ManagementFeesOverAssets 0.39%
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.21%
Total annual operating expenses rr_ExpensesOverAssets 0.60%
Example rr_ExpenseExampleAbstract  
1 year rr_ExpenseExampleYear01 61
3 years rr_ExpenseExampleYear03 192
5 years rr_ExpenseExampleYear05 335
10 years rr_ExpenseExampleYear10 750
Annual Total Returns rr_BarChartTableAbstract  
2001 rr_AnnualReturn2001 (11.65%)
2002 rr_AnnualReturn2002 (23.66%)
2003 rr_AnnualReturn2003 24.82%
2004 rr_AnnualReturn2004 7.49%
2005 rr_AnnualReturn2005 6.42%
2006 rr_AnnualReturn2006 7.22%
2007 rr_AnnualReturn2007 18.83%
2008 rr_AnnualReturn2008 (49.40%)
2009 rr_AnnualReturn2009 41.13%
2010 rr_AnnualReturn2010 12.41%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarter Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 19.09%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarter Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (27.07%)
Year to Date Return, Label rr_YearToDateReturnLabel Year-to-Date Return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Mar. 31, 2011
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 5.43%
Retail | Fidelity Magellan Fund | Return Before Taxes | Fidelity Magellan Fund Class
  
Average Annual Returns rr_AverageAnnualReturnAbstract  
Column rr_AverageAnnualReturnColumnName Fidelity Magellan Fund
Label rr_AverageAnnualReturnLabel Return Before Taxes
Past 1 year rr_AverageAnnualReturnYear01 12.41%
Past 5 years rr_AverageAnnualReturnYear05 0.45%
Past 10 years rr_AverageAnnualReturnYear10 (0.15%)
Retail | Fidelity Magellan Fund | Return After Taxes on Distributions | Fidelity Magellan Fund Class
  
Average Annual Returns rr_AverageAnnualReturnAbstract  
Column rr_AverageAnnualReturnColumnName Fidelity Magellan Fund
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions
Past 1 year rr_AverageAnnualReturnYear01 12.26%
Past 5 years rr_AverageAnnualReturnYear05 (0.74%)
Past 10 years rr_AverageAnnualReturnYear10 (0.89%)
Retail | Fidelity Magellan Fund | Return After Taxes on Distributions and Sale of Fund Shares | Fidelity Magellan Fund Class
  
Average Annual Returns rr_AverageAnnualReturnAbstract  
Column rr_AverageAnnualReturnColumnName Fidelity Magellan Fund
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions and Sale of Fund Shares
Past 1 year rr_AverageAnnualReturnYear01 8.25%
Past 5 years rr_AverageAnnualReturnYear05 0.49%
Past 10 years rr_AverageAnnualReturnYear10 (0.11%)
Retail | Fidelity Magellan Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)
  
Average Annual Returns rr_AverageAnnualReturnAbstract  
Label rr_AverageAnnualReturnLabel S&P 500® Index
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses, or taxes)
Past 1 year rr_AverageAnnualReturnYear01 15.06%
Past 5 years rr_AverageAnnualReturnYear05 2.29%
Past 10 years rr_AverageAnnualReturnYear10 1.41%
K | Fidelity Magellan Fund
  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading
Fund Summary
Fund/Class:
Fidelity® Magellan® Fund/K
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The fund seeks capital appreciation.
Fee Table fmf61397_FundFeesAndExpensesAbstract  
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 and hold shares of the fund.
Shareholder fees rr_ShareholderFeesAbstract  
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder fees (fees paid directly from your investment)
Annual class operating expenses rr_OperatingExpensesAbstract  
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual class operating expenses (expenses that you pay each year as a % of the value of your investment)
Example rr_ExpenseExampleAbstract  
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:
Portfolio Turnover fmf61397_PortfolioTurnoverAltAbstract  
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 42% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 42.00%
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
  • Normally investing primarily in common stocks.
  • Investing in domestic and foreign issuers.
  • Investing in either "growth" stocks or "value" stocks or both.
  • Using fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions to select investments.
Risk [Heading] rr_RiskHeading Principal Investment Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
  • Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market can react differently to these developments.
  • Foreign Exposure. Foreign 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.
  • 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.

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.
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.
Risk Lose Money [Text] rr_RiskLoseMoney You could lose money by investing in the fund.
Performance fmf61397_FundPastPerformanceAbstract  
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 over various periods of time. The index description appears in the Additional Information about the Index section of the prospectus. Past performance is not an indication of future performance.

Visit www.401k.com (log in, choose plan, select Investment Choices & Research, and then pick investment option) 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 over various periods of time.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance is not an indication of future performance.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.401k.com (log in, choose plan, select Investment Choices & Research, and then pick investment option)
Annual Total Returns rr_BarChartTableAbstract  
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 Return19.14%June 30, 2009
Lowest Quarter Return-12.77%June 30, 2010
Year-to-Date Return5.46%March 31, 2011
Average Annual Returns rr_AverageAnnualReturnAbstract  
Performance Table Heading rr_PerformanceTableHeading

Average Annual Returns

For the periods ended
December 31, 2010
K | Fidelity Magellan Fund | Class K
  
Shareholder fees rr_ShareholderFeesAbstract  
Shareholder fees (fees paid directly from your investment) rr_ShareholderFeeOther none
Annual class operating expenses rr_OperatingExpensesAbstract  
Management fee (fluctuates based on the fund's performance relative to a securities market index) rr_ManagementFeesOverAssets 0.39%
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.07%
Total annual operating expenses rr_ExpensesOverAssets 0.46%
Example rr_ExpenseExampleAbstract  
1 year rr_ExpenseExampleYear01 47
3 years rr_ExpenseExampleYear03 148
5 years rr_ExpenseExampleYear05 258
10 years rr_ExpenseExampleYear10 579
Annual Total Returns rr_BarChartTableAbstract  
2009 rr_AnnualReturn2009 41.39%
2010 rr_AnnualReturn2010 12.55%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarter Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 19.14%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarter Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Jun. 30, 2010
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (12.77%)
Year to Date Return, Label rr_YearToDateReturnLabel Year-to-Date Return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Mar. 31, 2011
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 5.46%
Average Annual Returns rr_AverageAnnualReturnAbstract  
Label rr_AverageAnnualReturnLabel Class K
Past 1 year rr_AverageAnnualReturnYear01 12.55%
Life of class rr_AverageAnnualReturnSinceInception (5.81%) [1]
Inception Date rr_AverageAnnualReturnInceptionDate May 09, 2008
K | Fidelity Magellan Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)
  
Average Annual Returns rr_AverageAnnualReturnAbstract  
Label rr_AverageAnnualReturnLabel S&P 500® Index
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses, or taxes)
Past 1 year rr_AverageAnnualReturnYear01 15.06%
Life of class rr_AverageAnnualReturnSinceInception (1.43%) [1]
Inception Date rr_AverageAnnualReturnInceptionDate May 09, 2008
[1] From May 9, 2008.