485BPOS

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM N-1A
REGISTRATION STATEMENT (No. 002-25235)
		UNDER THE SECURITIES ACT OF 1933	[X]
		Pre-Effective Amendment No. ____	[ ]
		Post-Effective Amendment No. 75	[X]
and
REGISTRATION STATEMENT (No. 811-01400)
		UNDER THE INVESTMENT COMPANY ACT OF 1940	[X]
		Amendment No. 75	[X]
Fidelity Contrafund
(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 No. 75 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 20th day of March, 2012.

	Fidelity Contrafund
	By	/s/Kenneth B. Robins
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||		Kenneth B. Robins, 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/Kenneth B. Robins		President and Treasurer	March 20, 2012
Kenneth B. Robins		(Principal Executive Officer)
/s/Christine Reynolds		Chief Financial Officer	March 20, 2012
Christine Reynolds		(Principal Financial Officer)
/s/James C. Curvey	*	Trustee	March 20, 2012
James C. Curvey
/s/Dennis J. Dirks	*	Trustee	March 20, 2012
Dennis J. Dirks
/s/Alan J. Lacy	*	Trustee	March 20, 2012
Alan J. Lacy
/s/Ned C. Lautenbach	*	Trustee	March 20, 2012
Ned C. Lautenbach
/s/Joseph Mauriello	*	Trustee	March 20, 2012
Joseph Mauriello
/s/Ronald P. O'Hanley	*	Trustee	March 20, 2012
Ronald P. O'Hanley
/s/Robert W. Selander	*	Trustee	March 20, 2012
Robert W. Selander
/s/Cornelia M. Small	*	Trustee	March 20, 2012
Cornelia M. Small
/s/William S. Stavropoulos	*	Trustee	March 20, 2012
William S. Stavropoulos
/s/David M. Thomas	*	Trustee	March 20, 2012
David M. Thomas
/s/Michael E. Wiley	*	Trustee	March 20, 2012
Michael E. Wiley

*	By:	/s/Joseph R. Fleming
		Joseph R. Fleming, pursuant to a power of attorney dated December 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 Advisor Series I Fidelity Advisor Series VII Fidelity Advisor Series VIII Fidelity Beacon Street Trust Fidelity Capital Trust Fidelity Central Investment Portfolios LLC Fidelity Commonwealth Trust Fidelity Concord Street Trust Fidelity Congress Street Fund Fidelity Contrafund Fidelity Covington Trust Fidelity Destiny Portfolios Fidelity Devonshire Trust Fidelity Exchange Fund Fidelity Financial Trust Fidelity Hanover Street Trust Fidelity Hastings Street Trust Fidelity Investment Trust Fidelity Magellan Fund Fidelity Mt. Vernon Street Trust Fidelity Puritan Trust Fidelity Securities Fund Fidelity Select Portfolios Fidelity Summer Street Trust Fidelity Trend Fund Variable Insurance Products Fund Variable Insurance Products Fund II Variable Insurance Products Fund III Variable Insurance Products Fund IV

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 December 1, 2011.

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

/s/James C. Curvey	/s/Robert W. Selander
James C. Curvey	Robert W. Selander
/s/Ronald P. O'Hanley	/s/Cornelia M. Small
Ronald P. O'Hanley	Cornelia M. Small
/s/Dennis J. Dirks	/s/William S. Stavropoulos
Dennis J. Dirks	William S. Stavropoulos
/s/Alan J. Lacy	/s/David M. Thomas
Alan J. Lacy	David M. Thomas
/s/Ned C. Lautenbach	/s/Michael E. Wiley
Ned C. Lautenbach	Michael E. Wiley
/s/Joseph Mauriello
Joseph Mauriello

XML

Inst | Fidelity Advisor New Insights Fund

Fund Summary

Fund/Class:

Fidelity Advisor^® New Insights Fund/Institutional

Investment Objective

The fund seeks capital appreciation.

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 New Insights 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 New Insights Fund Institutional Class
Management fee (fluctuates based on the fund's performance relative to a securities market index)	0.59%
Distribution and/or Service (12b-1) fees	none
Other expenses	0.22%
Total annual operating expenses	0.81%

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 New Insights Fund Institutional Class
1 year	83
3 years	259
5 years	450
10 years	1,002

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 58% of the average value of its portfolio.

Principal Investment Strategies

• Normally investing primarily in common stocks.

• Investing in securities of companies whose value Fidelity Management & Research Company (FMR) believes is not fully recognized by the public.

• 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.

Principal Investment Risks

• 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.

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 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.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	13.73%	September 30, 2009
Lowest Quarter Return	-20.70%	December 31, 2008

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. 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, 2011

Average Annual Total Returns Inst Fidelity Advisor New Insights Fund	Past 1 year	Past 5 years	Life of fund		Inception Date
Return Before Taxes Institutional Class	(0.73%)	2.31%	9.24%	[1]	Jul. 31, 2003
Return After Taxes on Distributions Institutional Class	(0.79%)	2.19%	9.13%	[1]	Jul. 31, 2003
Return After Taxes on Distributions and Sale of Fund Shares Institutional Class	(0.47%)	1.97%	8.17%	[1]	Jul. 31, 2003
S&P 500® Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(0.25%)	4.98%	[1]	Jul. 31, 2003

[1] From July 31, 2003.

XML

Retail | Fidelity Contrafund

Fund Summary

Fund/Class:

Fidelity^® Contrafund^®/Fidelity Contrafund

Investment Objective

The fund seeks capital appreciation.

Fee Table

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

Shareholder fees (fees paid directly from your investment)

Shareholder Fees (USD $)	Retail Fidelity Contrafund Class: Fidelity Contrafund
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	Retail Fidelity Contrafund Class: Fidelity Contrafund
Management fee (fluctuates based on the fund's performance relative to a securities market index)	0.63%
Distribution and/or Service (12b-1) fees	none
Other expenses	0.18%
Total annual operating expenses	0.81%

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 $)	Retail Fidelity Contrafund Class: Fidelity Contrafund
1 year	83
3 years	259
5 years	450
10 years	1,002

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 55% of the average value of its portfolio.

Principal Investment Strategies

• Normally investing primarily in common stocks.

• Investing in securities of companies whose value Fidelity Management & Research Company (FMR) believes is not fully recognized by the public.

• 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.

Principal Investment Risks

• 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.

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 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.

Year-by-Year Returns

Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	13.91%	September 30, 2009
Lowest Quarter Return	-20.43%	December 31, 2008

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. 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, 2011

Average Annual Total Returns Retail Fidelity Contrafund	Past 1 year	Past 5 years	Past 10 years
Return Before Taxes Class: Fidelity Contrafund	(0.14%)	2.58%	6.96%
Return After Taxes on Distributions Class: Fidelity Contrafund	(0.19%)	2.29%	6.61%
Return After Taxes on Distributions and Sale of Fund Shares Class: Fidelity Contrafund	(0.03%)	2.20%	6.11%
S&P 500® Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(0.25%)	2.92%

XML

A T B C | Fidelity Advisor New Insights Fund

Fund Summary

Fund/Class:

Fidelity Advisor^® New Insights Fund/A, T, B, C

Investment Objective

The fund seeks capital appreciation.

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 New Insights Fund	Class A		Class T		Class B		Class C
Maximum sales charge (load) on purchases (as a % of offering price)	5.75%		3.50%		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 New Insights Fund	Class A	Class T	Class B	Class C
Management fee (fluctuates based on the fund's performance relative to a securities market index)	0.59%	0.59%	0.59%	0.59%
Distribution and/or Service (12b-1) fees	0.25%	0.50%	1.00%	1.00%
Other expenses	0.24%	0.23%	0.30%	0.24%
Total annual operating expenses	1.08%	1.32%	1.89%	1.83%

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 New Insights Fund (USD $)	Class A	Class T	Class B	Class C
1 year	679	480	692	286
3 years	899	754	894	576
5 years	1,136	1,048	1,221	990
10 years	1,816	1,885	1,901	2,148

Hold Shares

Expense Example, No Redemption A T B C Fidelity Advisor New Insights Fund (USD $)	Class A	Class T	Class B	Class C
1 year	679	480	192	186
3 years	899	754	594	576
5 years	1,136	1,048	1,021	990
10 years	1,816	1,885	1,901	2,148

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 58% of the average value of its portfolio.

Principal Investment Strategies

• Normally investing primarily in common stocks.

• Investing in securities of companies whose value Fidelity Management & Research Company (FMR) believes is not fully recognized by the public.

• 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.

Principal Investment Risks

• 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.

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 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.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	13.72%	September 30, 2009
Lowest Quarter Return	-20.76%	December 31, 2008

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. 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, 2011

Average Annual Total Returns A T B C Fidelity Advisor New Insights Fund	Past 1 year	Past 5 years	Life of fund		Inception Date
Return Before Taxes Class A	(6.73%)	0.85%	8.17%	[1]	Jul. 31, 2003
Return Before Taxes Class T	(4.71%)	1.08%	8.23%	[1]	Jul. 31, 2003
Return Before Taxes Class B	(6.75%)	0.84%	8.20%	[1]	Jul. 31, 2003
Return Before Taxes Class C	(2.72%)	1.30%	8.12%	[1]	Jul. 31, 2003
Return After Taxes on Distributions Class A	(6.78%)	0.76%	8.08%	[1]	Jul. 31, 2003
Return After Taxes on Distributions and Sale of Fund Shares Class A	(4.37%)	0.73%	7.19%	[1]	Jul. 31, 2003
S&P 500® Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(0.25%)	4.98%	[1]	Jul. 31, 2003

[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 1.00% 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.

[1] From July 31, 2003.

XML

K | Fidelity Contrafund

Fund Summary

Fund/Class:

Fidelity^® Contrafund^®/K

Investment Objective

The fund seeks capital appreciation.

Fee Table

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

Shareholder fees (fees paid directly from your investment)

Shareholder Fees (USD $)	K Fidelity Contrafund Class K
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	K Fidelity Contrafund Class K
Management fee (fluctuates based on the fund's performance relative to a securities market index)	0.63%
Distribution and/or Service (12b-1) fees	none
Other expenses	0.06%
Total annual operating expenses	0.69%

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 $)	K Fidelity Contrafund Class K
1 year	70
3 years	221
5 years	384
10 years	859

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 55% of the average value of its portfolio.

Principal Investment Strategies

• Normally investing primarily in common stocks.

• Investing in securities of companies whose value Fidelity Management & Research Company (FMR) believes is not fully recognized by the public.

• 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.

Principal Investment Risks

• 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.

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 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 and log in for updated return information.

Year-by-Year Returns

Calendar Years

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	13.92%	September 30, 2009
Lowest Quarter Return	-11.61%	September 30, 2011

Average Annual Returns

For the periods ended

December 31, 2011

Average Annual Total Returns K Fidelity Contrafund	Past 1 year	Life of class		Inception Date
Class K	(0.02%)	0.15%	[1]	May 09, 2008
S&P 500® Index (reflects no deduction for fees, expenses, or taxes)	2.11%	(0.47%)	[1]	May 09, 2008

[1] From May 9, 2008.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Document Type

dei_DocumentType

485BPOS

Document Period End Date

dei_DocumentPeriodEndDate

Dec. 31, 2011

Registrant Name

dei_EntityRegistrantName

FIDELITY CONTRAFUND

Central Index Key

dei_EntityCentralIndexKey

0000024238

Amendment Flag

dei_AmendmentFlag

false

Document Creation Date

dei_DocumentCreationDate

Feb. 28, 2012

Document Effective Date

dei_DocumentEffectiveDate

Feb. 29, 2012

Prospectus Date

rr_ProspectusDate

Feb. 29, 2012

A T B C | Fidelity Advisor New Insights Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:

Fidelity Advisor^® New Insights Fund/A, T, B, C

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks capital appreciation.

Fee Table

fc24238_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, 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.

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

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)

Expense 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 and if you hold your shares:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Sell All Shares

Expense Example, No Redemption

rr_ExpenseExampleNoRedemptionAbstract

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

rr_ExpenseExampleNoRedemptionByYearCaption

Hold Shares

Portfolio Turnover

fc24238_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 58% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

58.00%

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Normally investing primarily in common stocks.

• Investing in securities of companies whose value Fidelity Management & Research Company (FMR) believes is not fully recognized by the public.

• 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

fc24238_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.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 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.advisor.fidelity.com

Annual Total Returns

rr_BarChartTableAbstract

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	13.72%	September 30, 2009
Lowest Quarter Return	-20.76%	December 31, 2008

Average Annual Total Returns

rr_AverageAnnualReturnAbstract

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

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. 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, 2011

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 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.

A T B C | Fidelity Advisor New Insights Fund | Class A

Shareholder fees

rr_ShareholderFeesAbstract

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

rr_MaximumCumulativeSalesChargeOverOfferingPrice

5.75%

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

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

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 1.00% or 0.25%, respectively.

Annual class operating expenses

rr_OperatingExpensesAbstract

Management fee (fluctuates based on the fund's performance relative to a securities market index)

rr_ManagementFeesOverAssets

0.59%

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

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.24%

Total annual operating expenses

rr_ExpensesOverAssets

1.08%

Expense Example

rr_ExpenseExampleAbstract

1 year

rr_ExpenseExampleYear01

679

3 years

rr_ExpenseExampleYear03

899

5 years

rr_ExpenseExampleYear05

1,136

10 years

rr_ExpenseExampleYear10

1,816

Expense Example, No Redemption

rr_ExpenseExampleNoRedemptionAbstract

1 year

rr_ExpenseExampleNoRedemptionYear01

679

3 years

rr_ExpenseExampleNoRedemptionYear03

899

5 years

rr_ExpenseExampleNoRedemptionYear05

1,136

10 years

rr_ExpenseExampleNoRedemptionYear10

1,816

Annual Total Returns

rr_BarChartTableAbstract

2004

rr_AnnualReturn2004

18.76%

2005

rr_AnnualReturn2005

19.01%

2006

rr_AnnualReturn2006

11.06%

2007

rr_AnnualReturn2007

20.26%

2008

rr_AnnualReturn2008

(37.92%)

2009

rr_AnnualReturn2009

29.12%

2010

rr_AnnualReturn2010

16.07%

2011

rr_AnnualReturn2011

(1.04%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.72%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(20.76%)

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

A T B C | Fidelity Advisor New Insights Fund | Class T

Shareholder fees

rr_ShareholderFeesAbstract

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

rr_MaximumCumulativeSalesChargeOverOfferingPrice

3.50%

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

rr_MaximumDeferredSalesChargeOverOther

none

^[1]

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 1.00% or 0.25%, respectively.

Annual class operating expenses

rr_OperatingExpensesAbstract

Management fee (fluctuates based on the fund's performance relative to a securities market index)

rr_ManagementFeesOverAssets

0.59%

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

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

0.23%

Total annual operating expenses

rr_ExpensesOverAssets

1.32%

Expense Example

rr_ExpenseExampleAbstract

1 year

rr_ExpenseExampleYear01

480

3 years

rr_ExpenseExampleYear03

754

5 years

rr_ExpenseExampleYear05

1,048

10 years

rr_ExpenseExampleYear10

1,885

Expense Example, No Redemption

rr_ExpenseExampleNoRedemptionAbstract

1 year

rr_ExpenseExampleNoRedemptionYear01

480

3 years

rr_ExpenseExampleNoRedemptionYear03

754

5 years

rr_ExpenseExampleNoRedemptionYear05

1,048

10 years

rr_ExpenseExampleNoRedemptionYear10

1,885

A T B C | Fidelity Advisor New Insights Fund | Class B

Shareholder fees

rr_ShareholderFeesAbstract

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]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Declines over 6 years from 5.00% to 0%.

Annual class operating expenses

rr_OperatingExpensesAbstract

Management fee (fluctuates based on the fund's performance relative to a securities market index)

rr_ManagementFeesOverAssets

0.59%

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

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.30%

Total annual operating expenses

rr_ExpensesOverAssets

1.89%

Expense Example

rr_ExpenseExampleAbstract

1 year

rr_ExpenseExampleYear01

692

3 years

rr_ExpenseExampleYear03

894

5 years

rr_ExpenseExampleYear05

1,221

10 years

rr_ExpenseExampleYear10

1,901

Expense Example, No Redemption

rr_ExpenseExampleNoRedemptionAbstract

1 year

rr_ExpenseExampleNoRedemptionYear01

192

3 years

rr_ExpenseExampleNoRedemptionYear03

594

5 years

rr_ExpenseExampleNoRedemptionYear05

1,021

10 years

rr_ExpenseExampleNoRedemptionYear10

1,901

A T B C | Fidelity Advisor New Insights Fund | Class C

Shareholder fees

rr_ShareholderFeesAbstract

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]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

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

Annual class operating expenses

rr_OperatingExpensesAbstract

Management fee (fluctuates based on the fund's performance relative to a securities market index)

rr_ManagementFeesOverAssets

0.59%

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

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.24%

Total annual operating expenses

rr_ExpensesOverAssets

1.83%

Expense Example

rr_ExpenseExampleAbstract

1 year

rr_ExpenseExampleYear01

286

3 years

rr_ExpenseExampleYear03

576

5 years

rr_ExpenseExampleYear05

990

10 years

rr_ExpenseExampleYear10

2,148

Expense Example, No Redemption

rr_ExpenseExampleNoRedemptionAbstract

1 year

rr_ExpenseExampleNoRedemptionYear01

186

3 years

rr_ExpenseExampleNoRedemptionYear03

576

5 years

rr_ExpenseExampleNoRedemptionYear05

990

10 years

rr_ExpenseExampleNoRedemptionYear10

2,148

A T B C | Fidelity Advisor New Insights Fund | Return Before Taxes | Class A

Average Annual Total Returns

rr_AverageAnnualReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(6.73%)

Past 5 years

rr_AverageAnnualReturnYear05

0.85%

Life of fund

rr_AverageAnnualReturnSinceInception

8.17%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 31, 2003

A T B C | Fidelity Advisor New Insights Fund | Return Before Taxes | Class T

Average Annual Total Returns

rr_AverageAnnualReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class T - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(4.71%)

Past 5 years

rr_AverageAnnualReturnYear05

1.08%

Life of fund

rr_AverageAnnualReturnSinceInception

8.23%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 31, 2003

A T B C | Fidelity Advisor New Insights Fund | Return Before Taxes | Class B

Average Annual Total Returns

rr_AverageAnnualReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class B - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(6.75%)

Past 5 years

rr_AverageAnnualReturnYear05

0.84%

Life of fund

rr_AverageAnnualReturnSinceInception

8.20%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 31, 2003

A T B C | Fidelity Advisor New Insights Fund | Return Before Taxes | Class C

Average Annual Total Returns

rr_AverageAnnualReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class C - Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(2.72%)

Past 5 years

rr_AverageAnnualReturnYear05

1.30%

Life of fund

rr_AverageAnnualReturnSinceInception

8.12%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 31, 2003

A T B C | Fidelity Advisor New Insights Fund | Return After Taxes on Distributions | Class A

Average Annual Total Returns

rr_AverageAnnualReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class A - Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(6.78%)

Past 5 years

rr_AverageAnnualReturnYear05

0.76%

Life of fund

rr_AverageAnnualReturnSinceInception

8.08%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 31, 2003

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

Average Annual Total Returns

rr_AverageAnnualReturnAbstract

Label

rr_AverageAnnualReturnLabel

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

Past 1 year

rr_AverageAnnualReturnYear01

(4.37%)

Past 5 years

rr_AverageAnnualReturnYear05

0.73%

Life of fund

rr_AverageAnnualReturnSinceInception

7.19%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 31, 2003

A T B C | Fidelity Advisor New Insights Fund | S&P 500® Index (reflects no deduction for fees, expenses, or taxes)

Average Annual Total 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

2.11%

Past 5 years

rr_AverageAnnualReturnYear05

(0.25%)

Life of fund

rr_AverageAnnualReturnSinceInception

4.98%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 31, 2003

Inst | Fidelity Advisor New Insights Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:

Fidelity Advisor^® New Insights Fund/Institutional

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks capital appreciation.

Fee Table

fc24238_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, hold, or sell 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)

Expense 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

fc24238_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 58% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

58.00%

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Normally investing primarily in common stocks.

• Investing in securities of companies whose value Fidelity Management & Research Company (FMR) believes is not fully recognized by the public.

• 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

fc24238_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.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 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.advisor.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 Return	13.73%	September 30, 2009
Lowest Quarter Return	-20.70%	December 31, 2008

Average Annual Total 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, 2011

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.

Inst | Fidelity Advisor New Insights Fund | Institutional 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

0.59%

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

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.22%

Total annual operating expenses

rr_ExpensesOverAssets

0.81%

Expense Example

rr_ExpenseExampleAbstract

1 year

rr_ExpenseExampleYear01

83

3 years

rr_ExpenseExampleYear03

259

5 years

rr_ExpenseExampleYear05

450

10 years

rr_ExpenseExampleYear10

1,002

Annual Total Returns

rr_BarChartTableAbstract

2004

rr_AnnualReturn2004

19.27%

2005

rr_AnnualReturn2005

19.43%

2006

rr_AnnualReturn2006

11.40%

2007

rr_AnnualReturn2007

20.57%

2008

rr_AnnualReturn2008

(37.76%)

2009

rr_AnnualReturn2009

29.37%

2010

rr_AnnualReturn2010

16.34%

2011

rr_AnnualReturn2011

(0.73%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.73%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(20.70%)

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Inst | Fidelity Advisor New Insights Fund | Return Before Taxes | Institutional Class

Average Annual Total Returns

rr_AverageAnnualReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(0.73%)

Past 5 years

rr_AverageAnnualReturnYear05

2.31%

Life of fund

rr_AverageAnnualReturnSinceInception

9.24%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 31, 2003

Inst | Fidelity Advisor New Insights Fund | Return After Taxes on Distributions | Institutional Class

Average Annual Total Returns

rr_AverageAnnualReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(0.79%)

Past 5 years

rr_AverageAnnualReturnYear05

2.19%

Life of fund

rr_AverageAnnualReturnSinceInception

9.13%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 31, 2003

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

Average Annual Total Returns

rr_AverageAnnualReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Institutional Class

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.47%)

Past 5 years

rr_AverageAnnualReturnYear05

1.97%

Life of fund

rr_AverageAnnualReturnSinceInception

8.17%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 31, 2003

Inst | Fidelity Advisor New Insights Fund | S&P 500® Index (reflects no deduction for fees, expenses, or taxes)

Average Annual Total 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

2.11%

Past 5 years

rr_AverageAnnualReturnYear05

(0.25%)

Life of fund

rr_AverageAnnualReturnSinceInception

4.98%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 31, 2003

Retail | Fidelity Contrafund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:

Fidelity^® Contrafund^®/Fidelity Contrafund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks capital appreciation.

Fee Table

fc24238_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)

Expense 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

fc24238_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 55% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

55.00%

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Normally investing primarily in common stocks.

• Investing in securities of companies whose value Fidelity Management & Research Company (FMR) believes is not fully recognized by the public.

• 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

fc24238_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 Return	13.91%	September 30, 2009
Lowest Quarter Return	-20.43%	December 31, 2008

Average Annual Total 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, 2011

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 Contrafund | Class: Fidelity Contrafund

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

0.63%

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

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.18%

Total annual operating expenses

rr_ExpensesOverAssets

0.81%

Expense Example

rr_ExpenseExampleAbstract

1 year

rr_ExpenseExampleYear01

83

3 years

rr_ExpenseExampleYear03

259

5 years

rr_ExpenseExampleYear05

450

10 years

rr_ExpenseExampleYear10

1,002

Annual Total Returns

rr_BarChartTableAbstract

2002

rr_AnnualReturn2002

(9.63%)

2003

rr_AnnualReturn2003

27.95%

2004

rr_AnnualReturn2004

15.07%

2005

rr_AnnualReturn2005

16.23%

2006

rr_AnnualReturn2006

11.54%

2007

rr_AnnualReturn2007

19.78%

2008

rr_AnnualReturn2008

(37.16%)

2009

rr_AnnualReturn2009

29.23%

2010

rr_AnnualReturn2010

16.93%

2011

rr_AnnualReturn2011

(0.14%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.91%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(20.43%)

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Retail | Fidelity Contrafund | Return Before Taxes | Class: Fidelity Contrafund

Average Annual Total Returns

rr_AverageAnnualReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Contrafund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(0.14%)

Past 5 years

rr_AverageAnnualReturnYear05

2.58%

Past 10 years

rr_AverageAnnualReturnYear10

6.96%

Retail | Fidelity Contrafund | Return After Taxes on Distributions | Class: Fidelity Contrafund

Average Annual Total Returns

rr_AverageAnnualReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Contrafund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(0.19%)

Past 5 years

rr_AverageAnnualReturnYear05

2.29%

Past 10 years

rr_AverageAnnualReturnYear10

6.61%

Retail | Fidelity Contrafund | Return After Taxes on Distributions and Sale of Fund Shares | Class: Fidelity Contrafund

Average Annual Total Returns

rr_AverageAnnualReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Fidelity Contrafund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.03%)

Past 5 years

rr_AverageAnnualReturnYear05

2.20%

Past 10 years

rr_AverageAnnualReturnYear10

6.11%

Retail | Fidelity Contrafund | S&P 500® Index (reflects no deduction for fees, expenses, or taxes)

Average Annual Total 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

2.11%

Past 5 years

rr_AverageAnnualReturnYear05

(0.25%)

Past 10 years

rr_AverageAnnualReturnYear10

2.92%

K | Fidelity Contrafund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Fund/Class:

Fidelity^® Contrafund^®/K

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks capital appreciation.

Fee Table

fc24238_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)

Expense 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

fc24238_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 55% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

55.00%

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

• Normally investing primarily in common stocks.

• Investing in securities of companies whose value Fidelity Management & Research Company (FMR) believes is not fully recognized by the public.

• 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

fc24238_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 and log in 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 and log in for updated return information

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 Return	13.92%	September 30, 2009
Lowest Quarter Return	-11.61%	September 30, 2011

Average Annual Total Returns

rr_AverageAnnualReturnAbstract

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Returns

For the periods ended

December 31, 2011

K | Fidelity Contrafund | 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

0.63%

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

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.06%

Total annual operating expenses

rr_ExpensesOverAssets

0.69%

Expense Example

rr_ExpenseExampleAbstract

1 year

rr_ExpenseExampleYear01

70

3 years

rr_ExpenseExampleYear03

221

5 years

rr_ExpenseExampleYear05

384

10 years

rr_ExpenseExampleYear10

859

Annual Total Returns

rr_BarChartTableAbstract

2009

rr_AnnualReturn2009

29.43%

2010

rr_AnnualReturn2010

17.09%

2011

rr_AnnualReturn2011

(0.02%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarter Return

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.92%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter Return

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(11.61%)

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Average Annual Total Returns

rr_AverageAnnualReturnAbstract

Label

rr_AverageAnnualReturnLabel

Class K

Past 1 year

rr_AverageAnnualReturnYear01

(0.02%)

Life of fund

rr_AverageAnnualReturnSinceInception

0.15%

^[5]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 09, 2008

K | Fidelity Contrafund | S&P 500® Index (reflects no deduction for fees, expenses, or taxes)

Average Annual Total 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

2.11%

Life of fund

rr_AverageAnnualReturnSinceInception

(0.47%)

^[5]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 09, 2008

[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 1.00% 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.

[4] From July 31, 2003.

[5] From May 9, 2008.