v3.26.1
Risk/Return Detail Data - FidelityMidCapValueFund-AMCIZPRO - USD ($)
 12 Months Ended 60 Months Ended 84 Months Ended 108 Months Ended 120 Months Ended
Apr. 01, 2026
Apr. 01, 2026
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Apr. 01, 2026
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Apr. 01, 2026
FidelityMidCapValueFund-AMCIZPRO | Fidelity Mid Cap Value Fund | Fidelity Advisor Mid Cap Value Fund - Class A                                
Prospectus Line Items                                
Maximum Cumulative Sales Charge (as a percentage of Offering Price) 5.75%                              
Maximum Deferred Sales Charge (as a percentage) [1] 0.00%                              
Management Fees (as a percentage of Assets) [2] 0.87%                              
Distribution and Service (12b-1) Fees 0.25%                              
Other Expenses (as a percentage of Assets): 0.01%                              
Expenses (as a percentage of Assets) 1.13%                              
Expense Example, with Redemption, 1 Year $ 684                              
Expense Example, with Redemption, 3 Years 913                              
Expense Example, with Redemption, 5 Years 1,161                              
Expense Example, with Redemption, 10 Years 1,871                              
Expense Example, No Redemption, 1 Year 684                              
Expense Example, No Redemption, 3 Years 913                              
Expense Example, No Redemption, 5 Years 1,161                              
Expense Example, No Redemption, 10 Years $ 1,871                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   6.23%                     12.04%     8.76%
Annual Return [Percent]     12.71% 14.08% 22.21% (10.77%) 33.60% 0.69% 23.20% (19.09%) 16.67% 12.08%        
FidelityMidCapValueFund-AMCIZPRO | Fidelity Mid Cap Value Fund | Fidelity Advisor Mid Cap Value Fund - Class M                                
Prospectus Line Items                                
Maximum Cumulative Sales Charge (as a percentage of Offering Price) 3.50%                              
Maximum Deferred Sales Charge (as a percentage) [1] 0.00%                              
Management Fees (as a percentage of Assets) [2] 0.87%                              
Distribution and Service (12b-1) Fees 0.50%                              
Other Expenses (as a percentage of Assets): 0.01%                              
Expenses (as a percentage of Assets) 1.38%                              
Expense Example, with Redemption, 1 Year $ 486                              
Expense Example, with Redemption, 3 Years 772                              
Expense Example, with Redemption, 5 Years 1,079                              
Expense Example, with Redemption, 10 Years 1,949                              
Expense Example, No Redemption, 1 Year 486                              
Expense Example, No Redemption, 3 Years 772                              
Expense Example, No Redemption, 5 Years 1,079                              
Expense Example, No Redemption, 10 Years $ 1,949                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   8.50%                     12.28%     8.73%
FidelityMidCapValueFund-AMCIZPRO | Fidelity Mid Cap Value Fund | Fidelity Advisor Mid Cap Value Fund - Class C                                
Prospectus Line Items                                
Maximum Cumulative Sales Charge (as a percentage of Offering Price) 0.00%                              
Maximum Deferred Sales Charge (as a percentage) [3] 1.00%                              
Management Fees (as a percentage of Assets) [2] 0.87%                              
Distribution and Service (12b-1) Fees 1.00%                              
Other Expenses (as a percentage of Assets): 0.02%                              
Expenses (as a percentage of Assets) 1.89%                              
Expenses Deferred Charges [Text Block] On Class C shares redeemed less than one year after purchase.                              
Expense Example, with Redemption, 1 Year $ 292                              
Expense Example, with Redemption, 3 Years 594                              
Expense Example, with Redemption, 5 Years 1,021                              
Expense Example, with Redemption, 10 Years 2,013                              
Expense Example, No Redemption, 1 Year 192                              
Expense Example, No Redemption, 3 Years 594                              
Expense Example, No Redemption, 5 Years 1,021                              
Expense Example, No Redemption, 10 Years $ 2,013                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   10.87%                     12.51%     8.75%
FidelityMidCapValueFund-AMCIZPRO | Fidelity Mid Cap Value Fund | Fidelity Advisor Mid Cap Value Fund - Class I                                
Prospectus Line Items                                
Maximum Cumulative Sales Charge (as a percentage of Offering Price) 0.00%                              
Maximum Deferred Sales Charge (as a percentage) 0.00%                              
Management Fees (as a percentage of Assets) [2] 0.87%                              
Distribution and Service (12b-1) Fees 0.00%                              
Other Expenses (as a percentage of Assets): 0.02%                              
Expenses (as a percentage of Assets) 0.89%                              
Expense Example, with Redemption, 1 Year $ 91                              
Expense Example, with Redemption, 3 Years 284                              
Expense Example, with Redemption, 5 Years 493                              
Expense Example, with Redemption, 10 Years 1,096                              
Expense Example, No Redemption, 1 Year 91                              
Expense Example, No Redemption, 3 Years 284                              
Expense Example, No Redemption, 5 Years 493                              
Expense Example, No Redemption, 10 Years $ 1,096                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   12.98%                     13.67%     9.71%
FidelityMidCapValueFund-AMCIZPRO | Fidelity Mid Cap Value Fund | Fidelity Advisor Mid Cap Value Fund - Class Z                                
Prospectus Line Items                                
Maximum Cumulative Sales Charge (as a percentage of Offering Price) 0.00%                              
Maximum Deferred Sales Charge (as a percentage) 0.00%                              
Management Fees (as a percentage of Assets) [2] 0.75%                              
Distribution and Service (12b-1) Fees 0.00%                              
Other Expenses (as a percentage of Assets): 0.01%                              
Expenses (as a percentage of Assets) 0.76%                              
Expense Example, with Redemption, 1 Year $ 78                              
Expense Example, with Redemption, 3 Years 243                              
Expense Example, with Redemption, 5 Years 422                              
Expense Example, with Redemption, 10 Years 942                              
Expense Example, No Redemption, 1 Year 78                              
Expense Example, No Redemption, 3 Years 243                              
Expense Example, No Redemption, 5 Years 422                              
Expense Example, No Redemption, 10 Years $ 942                              
Annual Return, Inception Date Feb. 01, 2017                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   13.12%                     13.82%   9.44% [4]  
FidelityMidCapValueFund-AMCIZPRO | Fidelity Mid Cap Value Fund                                
Prospectus Line Items                                
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity® Mid Cap Value Fund /Fidelity Advisor® Mid Cap Value Fund A, M, C, I, Z                                
Objective [Heading] Investment Objective                              
Objective, Primary [Text Block] Fidelity® Mid Cap Value Fund seeks long-term growth of capital.                              
Expense Heading [Optional Text] Fee Table                              
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. 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 33 of the prospectus and in the sales charge waiver appendix to the prospectus.                              
Shareholder Fees Caption [Optional Text] Shareholder fees                              
Operating Expenses Caption [Optional Text] Annual Operating Expenses                              
Portfolio Turnover [Heading] Portfolio Turnover                              
Portfolio Turnover [Text Block] 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 84 % of the average value of its portfolio.                              
Portfolio Turnover, Rate 84.00%                              
Expenses Deferred Charges [Text Block] Class A and Class M purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class M purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% and 0.25%, respectively.                              
Expense Breakpoint Discounts [Text] 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 33 of the prospectus                              
Expense Breakpoint, Minimum Investment Required [Amount] $ 50,000                              
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the 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:                              
Strategy [Heading] Principal Investment Strategies                              
Strategy Narrative [Text Block] Normally investing at least 80% of assets in securities of value companies with medium market capitalizations. The Adviser generally defines medium market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell Midcap ® Index or the S&P MidCap 400 ® Index. Value companies are companies the Adviser believes are undervalued in the marketplace. The Adviser considers traditional and other measures of value, such as whether the company is included in a third-party value benchmark or classified as a value company by a third-party vendor, whether the company's free cash flow yield is above the equity market median, whether the company's enterprise value (the total value of a company's outstanding equity and debt) relative to earnings is below the equity market median, or whether the company's price-to-book (P/B) ratio or projected price-to-earnings (P/E) ratio is below the equity market median. An issuer may be determined to be a value company under any of these factors. Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Normally investing primarily in common stocks. Potentially investing in companies with smaller or larger market capitalizations. Investing in domestic and foreign issuers. 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.                              
Bar Chart and Performance Table [Heading] Performance                              
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit institutional.fidelity.com for more recent performance information.                              
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.                              
Performance Availability Website Address [Text] institutional.fidelity.com                              
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                              
Bar Chart [Heading] Year-by-Year Returns                              
Bar Chart Narrative [Text Block] 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.                              
Bar Chart Does Not Reflect Sales Loads [Text] 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.                              
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                              
Highest Quarterly Return, Date Dec. 31, 2020                              
Highest Quarterly Return 21.03%                              
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                              
Lowest Quarterly Return, Date Mar. 31, 2020                              
Lowest Quarterly Return (32.29%)                              
Performance Table Heading Average Annual Returns                              
Performance Table Does Reflect Sales Loads Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.                              
Performance Table Uses Highest Federal Rate 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 The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                              
Performance Table One Class of after Tax Shown [Text] After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.                              
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
Performance Table Narrative Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
FidelityMidCapValueFund-AMCIZPRO | Fidelity Mid Cap Value Fund | After Taxes on Distributions | Fidelity Advisor Mid Cap Value Fund - Class A                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                            
Average Annual Return, Percent   4.14%                     10.27%     7.27%
FidelityMidCapValueFund-AMCIZPRO | Fidelity Mid Cap Value Fund | After Taxes on Distributions and Sales | Fidelity Advisor Mid Cap Value Fund - Class A                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                            
Average Annual Return, Percent   5.00%                     9.24%     6.74%
FidelityMidCapValueFund-AMCIZPRO | Fidelity Mid Cap Value Fund | RS003                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 3000® Index                            
Average Annual Return, Percent   17.15%                     13.15%     14.29%
FidelityMidCapValueFund-AMCIZPRO | Fidelity Mid Cap Value Fund | RS013                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell Midcap® Value Index                            
Average Annual Return, Percent   11.05%                     9.83%     9.78%
FidelitySeriesStockSelectorLargeCapValueFund-PRO | Fidelity Series Stock Selector Large Cap Value Fund | Fidelity Series Stock Selector Large Cap Value Fund                                
Prospectus Line Items                                
Management Fees (as a percentage of Assets) 0.00%                              
Distribution and Service (12b-1) Fees 0.00%                              
Other Expenses (as a percentage of Assets): 0.00%                              
Expenses (as a percentage of Assets) 0.00%                              
Expense Example, with Redemption, 1 Year $ 0                              
Expense Example, with Redemption, 3 Years 0                              
Expense Example, with Redemption, 5 Years 0                              
Expense Example, with Redemption, 10 Years $ 0                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   16.93%                     14.01%     11.69%
Annual Return [Percent]     16.93% 18.06% 15.58% (4.75%) 26.75% 4.39% 25.58% (8.93%) 12.39% 16.84%        
FidelitySeriesStockSelectorLargeCapValueFund-PRO | Fidelity Series Stock Selector Large Cap Value Fund                                
Prospectus Line Items                                
Risk/Return [Heading] Fund Summary Fund: Fidelity® Series Stock Selector Large Cap Value Fund                              
Objective [Heading] Investment Objective                              
Objective, Primary [Text Block] Fidelity® Series Stock Selector Large Cap Value Fund seeks long-term growth of capital.                              
Expense Heading [Optional Text] Fee Table                              
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund.                              
Shareholder Fees Caption [Optional Text] Shareholder fees                              
Shareholder Fee, Other $ 0                              
Operating Expenses Caption [Optional Text] Annual Operating Expenses                              
Portfolio Turnover [Heading] Portfolio Turnover                              
Portfolio Turnover [Text Block] 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 76 % of the average value of its portfolio.                              
Portfolio Turnover, Rate 76.00%                              
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                              
Strategy [Heading] Principal Investment Strategies                              
Strategy Narrative [Text Block] Normally investing at least 80% of assets in stocks of value companies with large market capitalizations. The Adviser generally defines large market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell 1000 ® Index or the S&P 500 ® Index. Value companies are companies the Adviser believes are undervalued in the marketplace. The Adviser considers traditional and other measures of value, such as whether the company is included in a third-party value benchmark or classified as a value company by a third-party vendor, whether the company's free cash flow yield is above the equity market median, whether the company's enterprise value (the total value of a company's outstanding equity and debt) relative to earnings is below the equity market median, or whether the company's price-to-book (P/B) ratio or projected price-to-earnings (P/E) ratio is below the equity market median. An issuer may be determined to be a value company under any of these factors. Stocks are a type of equity security that represent an ownership interest in an issuer. Stocks include common stocks (including depositary receipts evidencing ownership of common stock) and preferred stocks. Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Investing in domestic and foreign issuers. Allocating the fund's assets across different market sectors (at present, communication services, consumer discretionary, consumer staples, energy, financials, health care, industrials, information technology, materials, real estate, and utilities), using different Fidelity managers. 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.                              
Bar Chart and Performance Table [Heading] Performance                              
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. The performance shown does not reflect the impact of any fees paid at the fee-based account or plan level, if applicable. Visit www.fidelity.com for more recent performance information.                              
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.                              
Performance Availability Website Address [Text] www.fidelity.com                              
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                              
Bar Chart [Heading] Year-by-Year Returns                              
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                              
Highest Quarterly Return, Date Dec. 31, 2020                              
Highest Quarterly Return 18.36%                              
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                              
Lowest Quarterly Return, Date Mar. 31, 2020                              
Lowest Quarterly Return (27.99%)                              
Performance Table Heading Average Annual Returns                              
Performance Table Uses Highest Federal Rate 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 The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                              
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
FidelitySeriesStockSelectorLargeCapValueFund-PRO | Fidelity Series Stock Selector Large Cap Value Fund | After Taxes on Distributions | Fidelity Series Stock Selector Large Cap Value Fund                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                            
Average Annual Return, Percent   13.78%                     10.93%     9.37%
FidelitySeriesStockSelectorLargeCapValueFund-PRO | Fidelity Series Stock Selector Large Cap Value Fund | After Taxes on Distributions and Sales | Fidelity Series Stock Selector Large Cap Value Fund                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                            
Average Annual Return, Percent   11.28%                     10.36%     8.88%
FidelitySeriesStockSelectorLargeCapValueFund-PRO | Fidelity Series Stock Selector Large Cap Value Fund | RS005                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 1000® Value Index                            
Average Annual Return, Percent   15.91%                     11.33%     10.53%
FidelitySeriesStockSelectorLargeCapValueFund-PRO | Fidelity Series Stock Selector Large Cap Value Fund | RS001                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 1000® Index                            
Average Annual Return, Percent   17.37%                     13.59%     14.59%
FidelitySeriesValueDiscoveryFund-PRO | Fidelity Series Value Discovery Fund | Fidelity Series Value Discovery Fund                                
Prospectus Line Items                                
Management Fees (as a percentage of Assets) 0.00%                              
Distribution and Service (12b-1) Fees 0.00%                              
Other Expenses (as a percentage of Assets): 0.00%                              
Expenses (as a percentage of Assets) 0.00%                              
Expense Example, with Redemption, 1 Year $ 0                              
Expense Example, with Redemption, 3 Years 0                              
Expense Example, with Redemption, 5 Years 0                              
Expense Example, with Redemption, 10 Years $ 0                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   17.38%                     10.68%     10.47%
Annual Return [Percent]     17.38% 9.10% 6.14% (2.83%) 25.75% 8.91% 24.26% (8.96%) 11.52% 18.64%        
FidelitySeriesValueDiscoveryFund-PRO | Fidelity Series Value Discovery Fund                                
Prospectus Line Items                                
Risk/Return [Heading] Fund Summary Fund: Fidelity® Series Value Discovery Fund                              
Objective [Heading] Investment Objective                              
Objective, Primary [Text Block] Fidelity® Series Value Discovery Fund seeks capital appreciation.                              
Expense Heading [Optional Text] Fee Table                              
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund.                              
Shareholder Fees Caption [Optional Text] Shareholder fees                              
Shareholder Fee, Other $ 0                              
Operating Expenses Caption [Optional Text] Annual Operating Expenses                              
Portfolio Turnover [Heading] Portfolio Turnover                              
Portfolio Turnover [Text Block] 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 65 % of the average value of its portfolio.                              
Portfolio Turnover, Rate 65.00%                              
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                              
Strategy [Heading] Principal Investment Strategies                              
Strategy Narrative [Text Block] Normally investing at least 80% of assets in securities of value companies.  Value companies are companies the Adviser believes are undervalued in the marketplace. The Adviser considers traditional and other measures of value, such as whether the company is included in a third-party value benchmark or classified as a value company by a third-party vendor, whether the company's free cash flow yield is above the equity market median, whether the company's enterprise value (the total value of a company's outstanding equity and debt) relative to earnings is below the equity market median, or whether the company's price-to-book (P/B) ratio or projected price-to-earnings (P/E) ratio is below the equity market median. An issuer may be determined to be a value company under any of these factors. Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Normally investing primarily in common stocks. Investing in domestic and foreign issuers. 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.                              
Bar Chart and Performance Table [Heading] Performance                              
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. The performance shown does not reflect the impact of any fees paid at the fee-based account or plan level, if applicable. Visit www.fidelity.com for more recent performance information.                              
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.                              
Performance Availability Website Address [Text] www.fidelity.com                              
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                              
Bar Chart [Heading] Year-by-Year Returns                              
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                              
Highest Quarterly Return, Date Dec. 31, 2020                              
Highest Quarterly Return 18.44%                              
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                              
Lowest Quarterly Return, Date Mar. 31, 2020                              
Lowest Quarterly Return (26.12%)                              
Performance Table Heading Average Annual Returns                              
Performance Table Uses Highest Federal Rate 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 The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                              
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
FidelitySeriesValueDiscoveryFund-PRO | Fidelity Series Value Discovery Fund | After Taxes on Distributions | Fidelity Series Value Discovery Fund                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                            
Average Annual Return, Percent   15.53%                     8.84%     8.87%
FidelitySeriesValueDiscoveryFund-PRO | Fidelity Series Value Discovery Fund | After Taxes on Distributions and Sales | Fidelity Series Value Discovery Fund                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                            
Average Annual Return, Percent   11.46%                     8.10%     8.16%
FidelitySeriesValueDiscoveryFund-PRO | Fidelity Series Value Discovery Fund | RS008                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 3000® Value Index                            
Average Annual Return, Percent   15.71%                     11.18%     10.46%
FidelitySeriesValueDiscoveryFund-PRO | Fidelity Series Value Discovery Fund | RS003                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 3000® Index                            
Average Annual Return, Percent   17.15%                     13.15%     14.29%
FidelitySeriesAll-SectorEquityFund-PRO | Fidelity Series All-Sector Equity Fund | Fidelity Series All-Sector Equity Fund                                
Prospectus Line Items                                
Management Fees (as a percentage of Assets) 0.00%                              
Distribution and Service (12b-1) Fees 0.00%                              
Other Expenses (as a percentage of Assets): 0.00%                              
Expenses (as a percentage of Assets) 0.00%                              
Expense Example, with Redemption, 1 Year $ 0                              
Expense Example, with Redemption, 3 Years 0                              
Expense Example, with Redemption, 5 Years 0                              
Expense Example, with Redemption, 10 Years $ 0                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   19.75%                     15.41%     15.77%
Annual Return [Percent]     19.75% 26.80% 30.59% (18.46%) 26.61% 26.41% 32.17% (6.06%) 21.50% 10.79%        
FidelitySeriesAll-SectorEquityFund-PRO | Fidelity Series All-Sector Equity Fund                                
Prospectus Line Items                                
Risk/Return [Heading] Fund Summary Fund: Fidelity® Series All-Sector Equity Fund                              
Objective [Heading] Investment Objective                              
Objective, Primary [Text Block] Fidelity® Series All-Sector Equity Fund seeks capital appreciation.                              
Expense Heading [Optional Text] Fee Table                              
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund.                              
Shareholder Fees Caption [Optional Text] Shareholder fees                              
Shareholder Fee, Other $ 0                              
Operating Expenses Caption [Optional Text] Annual Operating Expenses                              
Portfolio Turnover [Heading] Portfolio Turnover                              
Portfolio Turnover [Text Block] 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 50 % of the average value of its portfolio.                              
Portfolio Turnover, Rate 50.00%                              
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                              
Strategy [Heading] Principal Investment Strategies                              
Strategy Narrative [Text Block] Normally investing at least 80% of assets in equity securities. Equity securities represent an ownership interest, or the right to acquire an ownership interest, in an issuer. Equity securities include common stocks (including depositary receipts evidencing ownership of common stock), preferred stocks and other preferred securities, convertible securities, rights and warrants, and other securities, such as hybrid securities and trust preferred securities, believed to have equity-like characteristics. Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Normally investing primarily in common stocks. Investing in domestic and foreign issuers. Allocating the fund's assets across different market sectors (at present, communication services, consumer discretionary, consumer staples, energy, financials, health care, industrials, information technology, materials, real estate, and utilities), using different Fidelity managers. 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.                              
Bar Chart and Performance Table [Heading] Performance                              
Performance Narrative [Text Block] 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 Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. The performance shown does not reflect the impact of any fees paid at the fee-based account or plan level, if applicable. Visit www.fidelity.com for more recent performance information.                              
Performance Information Illustrates Variability of Returns [Text] 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 Availability Website Address [Text] www.fidelity.com                              
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                              
Bar Chart [Heading] Year-by-Year Returns                              
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                              
Highest Quarterly Return, Date Jun. 30, 2020                              
Highest Quarterly Return 23.34%                              
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                              
Lowest Quarterly Return, Date Mar. 31, 2020                              
Lowest Quarterly Return (19.64%)                              
Performance Table Heading Average Annual Returns                              
Performance Table Uses Highest Federal Rate 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 The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                              
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
FidelitySeriesAll-SectorEquityFund-PRO | Fidelity Series All-Sector Equity Fund | After Taxes on Distributions | Fidelity Series All-Sector Equity Fund                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                            
Average Annual Return, Percent   17.59%                     12.45%     12.06%
FidelitySeriesAll-SectorEquityFund-PRO | Fidelity Series All-Sector Equity Fund | After Taxes on Distributions and Sales | Fidelity Series All-Sector Equity Fund                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                            
Average Annual Return, Percent   12.95%                     11.49%     11.61%
FidelitySeriesAll-SectorEquityFund-PRO | Fidelity Series All-Sector Equity Fund | RS001                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 1000® Index                            
Average Annual Return, Percent   17.37%                     13.59%     14.59%
FidelityEquity-IncomeFund-KPRO | Fidelity Equity-Income Fund | Fidelity Equity-Income Fund - Class K                                
Prospectus Line Items                                
Management Fees (as a percentage of Assets) 0.44%                              
Distribution and Service (12b-1) Fees 0.00%                              
Other Expenses (as a percentage of Assets): 0.01%                              
Expenses (as a percentage of Assets) 0.45%                              
Expense Example, with Redemption, 1 Year $ 46                              
Expense Example, with Redemption, 3 Years 144                              
Expense Example, with Redemption, 5 Years 252                              
Expense Example, with Redemption, 10 Years $ 567                              
Average Annual Return, Label [Optional Text]   Class K                            
Average Annual Return, Percent   19.07%                     12.46%     11.64%
Annual Return [Percent]     19.07% 15.37% 10.70% (5.00%) 24.51% 6.87% 28.02% (8.33%) 13.47% 17.52%        
FidelityEquity-IncomeFund-KPRO | Fidelity Equity-Income Fund                                
Prospectus Line Items                                
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity® Equity-Income Fund /K                                
Objective [Heading] Investment Objective                              
Objective, Primary [Text Block] Fidelity® Equity-Income Fund seeks reasonable income. In pursuing this objective, the fund will also consider the potential for capital appreciation. The fund seeks a yield for its shareholders that exceeds the yield on the securities comprising the S&P 500 ® Index.                              
Expense Heading [Optional Text] Fee Table                              
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                              
Shareholder Fees Caption [Optional Text] Shareholder fees                              
Shareholder Fee, Other $ 0                              
Operating Expenses Caption [Optional Text] Annual Operating Expenses                              
Portfolio Turnover [Heading] Portfolio Turnover                              
Portfolio Turnover [Text Block] 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 11 % of the average value of its portfolio.                              
Portfolio Turnover, Rate 11.00%                              
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                              
Strategy [Heading] Principal Investment Strategies                              
Strategy Narrative [Text Block] Normally investing at least 80% of assets in income-producing equity securities. Equity securities represent an ownership interest, or the right to acquire an ownership interest, in an issuer. Equity securities include common stocks (including depositary receipts evidencing ownership of common stock), preferred stocks and other preferred securities, convertible securities, rights and warrants, and other securities, such as hybrid securities and trust preferred securities, believed to have equity-like characteristics. Income-producing equity securities are equity securities that pay, or are expected to pay within the next three months, dividends or interest. Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Potentially investing in other types of equity securities and debt securities, including lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities or junk bonds). Investing in domestic and foreign issuers. 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. Potentially using covered call options as tools in managing the fund's assets. The Adviser's emphasis on income-producing equity securities tends to lead to investments in large cap "value" stocks. However, the Adviser is not constrained by any particular investment style.                              
Bar Chart and Performance Table [Heading] Performance                              
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance is not an indication of future performance. Visit www.401k.com and log in for more recent performance information.                              
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.                              
Performance Availability Website Address [Text] www.401k.com                              
Performance Past Does Not Indicate Future [Text] Past performance is not an indication of future performance.                              
Bar Chart [Heading] Year-by-Year Returns                              
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                              
Highest Quarterly Return, Date Dec. 31, 2020                              
Highest Quarterly Return 15.54%                              
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                              
Lowest Quarterly Return, Date Mar. 31, 2020                              
Lowest Quarterly Return (22.03%)                              
Performance Table Heading Average Annual Returns                              
FidelityEquity-IncomeFund-KPRO | Fidelity Equity-Income Fund | RS008                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 3000® Value Index                            
Average Annual Return, Percent   15.71%                     11.18%     10.46%
FidelityEquity-IncomeFund-KPRO | Fidelity Equity-Income Fund | RS003                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 3000® Index                            
Average Annual Return, Percent   17.15%                     13.15%     14.29%
FidelityStockSelectorLargeCapValueFund-AMCIZPRO | Fidelity Stock Selector Large Cap Value Fund | Fidelity Advisor Stock Selector Large Cap Value Fund - Class A                                
Prospectus Line Items                                
Maximum Cumulative Sales Charge (as a percentage of Offering Price) 5.75%                              
Maximum Deferred Sales Charge (as a percentage) [5] 0.00%                              
Management Fees (as a percentage of Assets) [6] 0.82%                              
Distribution and Service (12b-1) Fees 0.25%                              
Other Expenses (as a percentage of Assets): 0.04%                              
Expenses (as a percentage of Assets) 1.11%                              
Expense Example, with Redemption, 1 Year $ 682                              
Expense Example, with Redemption, 3 Years 908                              
Expense Example, with Redemption, 5 Years 1,151                              
Expense Example, with Redemption, 10 Years 1,849                              
Expense Example, No Redemption, 1 Year 682                              
Expense Example, No Redemption, 3 Years 908                              
Expense Example, No Redemption, 5 Years 1,151                              
Expense Example, No Redemption, 10 Years $ 1,849                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   8.96%                     11.39%     10.01%
Annual Return [Percent]     15.61% 16.81% 14.11% (5.73%) 25.25% 3.87% 24.29% (9.46%) 11.95% 15.73%        
FidelityStockSelectorLargeCapValueFund-AMCIZPRO | Fidelity Stock Selector Large Cap Value Fund | Fidelity Advisor Stock Selector Large Cap Value Fund - Class M                                
Prospectus Line Items                                
Maximum Cumulative Sales Charge (as a percentage of Offering Price) 3.50%                              
Maximum Deferred Sales Charge (as a percentage) [5] 0.00%                              
Management Fees (as a percentage of Assets) [6] 0.82%                              
Distribution and Service (12b-1) Fees 0.50%                              
Other Expenses (as a percentage of Assets): 0.04%                              
Expenses (as a percentage of Assets) [7] 1.36%                              
Expense Example, with Redemption, 1 Year $ 484                              
Expense Example, with Redemption, 3 Years 766                              
Expense Example, with Redemption, 5 Years 1,069                              
Expense Example, with Redemption, 10 Years 1,928                              
Expense Example, No Redemption, 1 Year 484                              
Expense Example, No Redemption, 3 Years 766                              
Expense Example, No Redemption, 5 Years 1,069                              
Expense Example, No Redemption, 10 Years $ 1,928                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   11.31%                     11.64%     9.97%
FidelityStockSelectorLargeCapValueFund-AMCIZPRO | Fidelity Stock Selector Large Cap Value Fund | Fidelity Advisor Stock Selector Large Cap Value Fund - Class C                                
Prospectus Line Items                                
Maximum Cumulative Sales Charge (as a percentage of Offering Price) 0.00%                              
Maximum Deferred Sales Charge (as a percentage) [8] 1.00%                              
Management Fees (as a percentage of Assets) [6] 0.82%                              
Distribution and Service (12b-1) Fees 1.00%                              
Other Expenses (as a percentage of Assets): 0.04%                              
Expenses (as a percentage of Assets) 1.86%                              
Expenses Deferred Charges [Text Block] On Class C shares redeemed less than one year after purchase.                              
Expense Example, with Redemption, 1 Year $ 289                              
Expense Example, with Redemption, 3 Years 585                              
Expense Example, with Redemption, 5 Years 1,006                              
Expense Example, with Redemption, 10 Years 1,984                              
Expense Example, No Redemption, 1 Year 189                              
Expense Example, No Redemption, 3 Years 585                              
Expense Example, No Redemption, 5 Years 1,006                              
Expense Example, No Redemption, 10 Years $ 1,984                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   13.73%                     11.83%     9.94%
FidelityStockSelectorLargeCapValueFund-AMCIZPRO | Fidelity Stock Selector Large Cap Value Fund | Fidelity Advisor Stock Selector Large Cap Value Fund - Class I                                
Prospectus Line Items                                
Maximum Cumulative Sales Charge (as a percentage of Offering Price) 0.00%                              
Maximum Deferred Sales Charge (as a percentage) 0.00%                              
Management Fees (as a percentage of Assets) [6] 0.77%                              
Distribution and Service (12b-1) Fees 0.00%                              
Other Expenses (as a percentage of Assets): 0.04%                              
Expenses (as a percentage of Assets) [7] 0.81%                              
Expense Example, with Redemption, 1 Year $ 83                              
Expense Example, with Redemption, 3 Years 259                              
Expense Example, with Redemption, 5 Years 450                              
Expense Example, with Redemption, 10 Years 1,002                              
Expense Example, No Redemption, 1 Year 83                              
Expense Example, No Redemption, 3 Years 259                              
Expense Example, No Redemption, 5 Years 450                              
Expense Example, No Redemption, 10 Years $ 1,002                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   15.95%                     13.06%     10.98%
FidelityStockSelectorLargeCapValueFund-AMCIZPRO | Fidelity Stock Selector Large Cap Value Fund | Fidelity Advisor Stock Selector Large Cap Value Fund - Class Z                                
Prospectus Line Items                                
Maximum Cumulative Sales Charge (as a percentage of Offering Price) 0.00%                              
Maximum Deferred Sales Charge (as a percentage) 0.00%                              
Management Fees (as a percentage of Assets) [6] 0.67%                              
Distribution and Service (12b-1) Fees 0.00%                              
Other Expenses (as a percentage of Assets): 0.04%                              
Expenses (as a percentage of Assets) [7] 0.71%                              
Expense Example, with Redemption, 1 Year $ 73                              
Expense Example, with Redemption, 3 Years 227                              
Expense Example, with Redemption, 5 Years 395                              
Expense Example, with Redemption, 10 Years 883                              
Expense Example, No Redemption, 1 Year 73                              
Expense Example, No Redemption, 3 Years 227                              
Expense Example, No Redemption, 5 Years 395                              
Expense Example, No Redemption, 10 Years $ 883                              
Annual Return, Inception Date Feb. 01, 2017                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   16.06%                     13.17%   10.62% [9]  
FidelityStockSelectorLargeCapValueFund-AMCIZPRO | Fidelity Stock Selector Large Cap Value Fund                                
Prospectus Line Items                                
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity® Stock Selector Large Cap Value Fund /Fidelity Advisor® Stock Selector Large Cap Value Fund A, M, C, I, Z                                
Objective [Heading] Investment Objective                              
Objective, Primary [Text Block] Fidelity® Stock Selector Large Cap Value Fund seeks long-term growth of capital.                              
Expense Heading [Optional Text] Fee Table                              
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. 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 33 of the prospectus and in the sales charge waiver appendix to the prospectus.                              
Shareholder Fees Caption [Optional Text] Shareholder fees                              
Operating Expenses Caption [Optional Text] Annual Operating Expenses                              
Portfolio Turnover [Heading] Portfolio Turnover                              
Portfolio Turnover [Text Block] The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 94 % of the average value of its portfolio.                              
Portfolio Turnover, Rate 94.00%                              
Expenses Deferred Charges [Text Block] Class A and Class M purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class M purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% and 0.25%, respectively.                              
Expense Breakpoint Discounts [Text] 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 33 of the prospectus                              
Expense Breakpoint, Minimum Investment Required [Amount] $ 50,000                              
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses. For the period, acquired fund fees and expenses are less than 0.01% and are included in other expenses .                              
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the 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:                              
Strategy [Heading] Principal Investment Strategies                              
Strategy Narrative [Text Block] Normally investing at least 80% of assets in stocks of value companies with large market capitalizations. The Adviser generally defines large market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell 1000 ® Index or the S&P 500 ® Index. Value companies are companies the Adviser believes are undervalued in the marketplace. The Adviser considers traditional and other measures of value, such as whether the company is included in a third-party value benchmark or classified as a value company by a third-party vendor, whether the company's free cash flow yield is above the equity market median, whether the company's enterprise value (the total value of a company's outstanding equity and debt) relative to earnings is below the equity market median, or whether the company's price-to-book (P/B) ratio or projected price-to-earnings (P/E) ratio is below the equity market median. An issuer may be determined to be a value company under any of these factors. Stocks are a type of equity security that represent an ownership interest in an issuer. Stocks include common stocks (including depositary receipts evidencing ownership of common stock) and preferred stocks. Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Investing in domestic and foreign issuers. Allocating the fund's assets across different market sectors (at present, communication services, consumer discretionary, consumer staples, energy, financials, health care, industrials, information technology, materials, real estate, and utilities), using different Fidelity managers. 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.                              
Bar Chart and Performance Table [Heading] Performance                              
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit institutional.fidelity.com for more recent performance information.                              
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.                              
Performance Availability Website Address [Text] institutional.fidelity.com                              
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                              
Bar Chart [Heading] Year-by-Year Returns                              
Bar Chart Narrative [Text Block] 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.                              
Bar Chart Does Not Reflect Sales Loads [Text] 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.                              
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                              
Highest Quarterly Return, Date Dec. 31, 2020                              
Highest Quarterly Return 18.15%                              
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                              
Lowest Quarterly Return, Date Mar. 31, 2020                              
Lowest Quarterly Return (28.00%)                              
Performance Table Heading Average Annual Returns                              
Performance Table Does Reflect Sales Loads Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges.                              
Performance Table Uses Highest Federal Rate 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 The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                              
Performance Table One Class of after Tax Shown [Text] After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary.                              
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
Performance Table Narrative Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
FidelityStockSelectorLargeCapValueFund-AMCIZPRO | Fidelity Stock Selector Large Cap Value Fund | After Taxes on Distributions | Fidelity Advisor Stock Selector Large Cap Value Fund - Class A                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                            
Average Annual Return, Percent   6.82%                     9.65%     8.84%
FidelityStockSelectorLargeCapValueFund-AMCIZPRO | Fidelity Stock Selector Large Cap Value Fund | After Taxes on Distributions and Sales | Fidelity Advisor Stock Selector Large Cap Value Fund - Class A                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                            
Average Annual Return, Percent   6.50%                     8.72%     7.95%
FidelityStockSelectorLargeCapValueFund-AMCIZPRO | Fidelity Stock Selector Large Cap Value Fund | RS005                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 1000® Value Index                            
Average Annual Return, Percent   15.91%                     11.33%     10.53%
FidelityStockSelectorLargeCapValueFund-AMCIZPRO | Fidelity Stock Selector Large Cap Value Fund | RS001                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 1000® Index                            
Average Annual Return, Percent   17.37%                     13.59%     14.59%
FidelityStockSelectorLargeCapValueFund-RetailPRO | Fidelity Stock Selector Large Cap Value Fund | Fidelity Stock Selector Large Cap Value Fund                                
Prospectus Line Items                                
Management Fees (as a percentage of Assets) [10] 0.77%                              
Distribution and Service (12b-1) Fees 0.00%                              
Other Expenses (as a percentage of Assets): 0.04%                              
Expenses (as a percentage of Assets) 0.81%                              
Expense Example, with Redemption, 1 Year $ 83                              
Expense Example, with Redemption, 3 Years 259                              
Expense Example, with Redemption, 5 Years 450                              
Expense Example, with Redemption, 10 Years $ 1,002                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   15.92%                     13.05%     10.99%
Annual Return [Percent]     15.92% 17.16% 14.46% (5.48%) 25.69% 4.15% 24.63% (9.18%) 12.33% 16.02%        
FidelityStockSelectorLargeCapValueFund-RetailPRO | Fidelity Stock Selector Large Cap Value Fund                                
Prospectus Line Items                                
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity® Stock Selector Large Cap Value Fund /Fidelity® Stock Selector Large Cap Value Fund                              
Objective [Heading] Investment Objective                              
Objective, Primary [Text Block] Fidelity® Stock Selector Large Cap Value Fund seeks long-term growth of capital.                              
Expense Heading [Optional Text] Fee Table                              
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                              
Shareholder Fees Caption [Optional Text] Shareholder fees                              
Shareholder Fee, Other $ 0                              
Operating Expenses Caption [Optional Text] Annual Operating Expenses                              
Portfolio Turnover [Heading] Portfolio Turnover                              
Portfolio Turnover [Text Block] The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 94 % of the average value of its portfolio.                              
Portfolio Turnover, Rate 94.00%                              
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                              
Strategy [Heading] Principal Investment Strategies                              
Strategy Narrative [Text Block] Normally investing at least 80% of assets in stocks of value companies with large market capitalizations. The Adviser generally defines large market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell 1000 ® Index or the S&P 500 ® Index. Value companies are companies the Adviser believes are undervalued in the marketplace. The Adviser considers traditional and other measures of value, such as whether the company is included in a third-party value benchmark or classified as a value company by a third-party vendor, whether the company's free cash flow yield is above the equity market median, whether the company's enterprise value (the total value of a company's outstanding equity and debt) relative to earnings is below the equity market median, or whether the company's price-to-book (P/B) ratio or projected price-to-earnings (P/E) ratio is below the equity market median. An issuer may be determined to be a value company under any of these factors. Stocks are a type of equity security that represent an ownership interest in an issuer. Stocks include common stocks (including depositary receipts evidencing ownership of common stock) and preferred stocks. Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Investing in domestic and foreign issuers. Allocating the fund's assets across different market sectors (at present, communication services, consumer discretionary, consumer staples, energy, financials, health care, industrials, information technology, materials, real estate, and utilities), using different Fidelity managers. 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.                              
Bar Chart and Performance Table [Heading] Performance                              
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.fidelity.com for more recent performance information.                              
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.                              
Performance Availability Website Address [Text] www.fidelity.com                              
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                              
Bar Chart [Heading] Year-by-Year Returns                              
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                              
Highest Quarterly Return, Date Dec. 31, 2020                              
Highest Quarterly Return 18.21%                              
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                              
Lowest Quarterly Return, Date Mar. 31, 2020                              
Lowest Quarterly Return (27.96%)                              
Performance Table Heading Average Annual Returns                              
Performance Table Uses Highest Federal Rate 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 The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                              
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
FidelityStockSelectorLargeCapValueFund-RetailPRO | Fidelity Stock Selector Large Cap Value Fund | After Taxes on Distributions | Fidelity Stock Selector Large Cap Value Fund                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                            
Average Annual Return, Percent   13.59%                     11.22%     9.75%
FidelityStockSelectorLargeCapValueFund-RetailPRO | Fidelity Stock Selector Large Cap Value Fund | After Taxes on Distributions and Sales | Fidelity Stock Selector Large Cap Value Fund                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                            
Average Annual Return, Percent   10.68%                     10.06%     8.77%
FidelityStockSelectorLargeCapValueFund-RetailPRO | Fidelity Stock Selector Large Cap Value Fund | RS005                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 1000® Value Index                            
Average Annual Return, Percent   15.91%                     11.33%     10.53%
FidelityStockSelectorLargeCapValueFund-RetailPRO | Fidelity Stock Selector Large Cap Value Fund | RS001                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 1000® Index                            
Average Annual Return, Percent   17.37%                     13.59%     14.59%
FidelityEquity-IncomeFund-RetailPRO | Fidelity Equity-Income Fund | Fidelity Equity-Income Fund                                
Prospectus Line Items                                
Management Fees (as a percentage of Assets) 0.52%                              
Distribution and Service (12b-1) Fees 0.00%                              
Other Expenses (as a percentage of Assets): 0.00%                              
Expenses (as a percentage of Assets) 0.52%                              
Expense Example, with Redemption, 1 Year $ 53                              
Expense Example, with Redemption, 3 Years 167                              
Expense Example, with Redemption, 5 Years 291                              
Expense Example, with Redemption, 10 Years $ 653                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   18.98%                     12.36%     11.54%
Annual Return [Percent]     18.98% 15.29% 10.60% (5.07%) 24.38% 6.78% 27.90% (8.41%) 13.36% 17.38%        
FidelityEquity-IncomeFund-RetailPRO | Fidelity Equity-Income Fund                                
Prospectus Line Items                                
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity® Equity-Income Fund /Fidelity® Equity-Income Fund                              
Objective [Heading] Investment Objective                              
Objective, Primary [Text Block] Fidelity® Equity-Income Fund seeks reasonable income. In pursuing this objective, the fund will also consider the potential for capital appreciation. The fund seeks a yield for its shareholders that exceeds the yield on the securities comprising the S&P 500 ® Index.                              
Expense Heading [Optional Text] Fee Table                              
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                              
Shareholder Fees Caption [Optional Text] Shareholder fees                              
Shareholder Fee, Other $ 0                              
Operating Expenses Caption [Optional Text] Annual Operating Expenses                              
Portfolio Turnover [Heading] Portfolio Turnover                              
Portfolio Turnover [Text Block] 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 11 % of the average value of its portfolio.                              
Portfolio Turnover, Rate 11.00%                              
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                              
Strategy [Heading] Principal Investment Strategies                              
Strategy Narrative [Text Block] Normally investing at least 80% of assets in income-producing equity securities. Equity securities represent an ownership interest, or the right to acquire an ownership interest, in an issuer. Equity securities include common stocks (including depositary receipts evidencing ownership of common stock), preferred stocks and other preferred securities, convertible securities, rights and warrants, and other securities, such as hybrid securities and trust preferred securities, believed to have equity-like characteristics. Income-producing equity securities are equity securities that pay, or are expected to pay within the next three months, dividends or interest. Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Potentially investing in other types of equity securities and debt securities, including lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities or junk bonds). Investing in domestic and foreign issuers. 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. Potentially using covered call options as tools in managing the fund's assets. The Adviser's emphasis on income-producing equity securities tends to lead to investments in large cap "value" stocks. However, the Adviser is not constrained by any particular investment style.                              
Bar Chart and Performance Table [Heading] Performance                              
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.fidelity.com for more recent performance information.                              
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.                              
Performance Availability Website Address [Text] www.fidelity.com                              
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                              
Bar Chart [Heading] Year-by-Year Returns                              
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                              
Highest Quarterly Return, Date Dec. 31, 2020                              
Highest Quarterly Return 15.51%                              
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                              
Lowest Quarterly Return, Date Mar. 31, 2020                              
Lowest Quarterly Return (22.05%)                              
Performance Table Heading Average Annual Returns                              
Performance Table Uses Highest Federal Rate 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 The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                              
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
FidelityEquity-IncomeFund-RetailPRO | Fidelity Equity-Income Fund | After Taxes on Distributions | Fidelity Equity-Income Fund                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                            
Average Annual Return, Percent   17.66%                     10.80%     9.95%
FidelityEquity-IncomeFund-RetailPRO | Fidelity Equity-Income Fund | After Taxes on Distributions and Sales | Fidelity Equity-Income Fund                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                            
Average Annual Return, Percent   12.12%                     9.53%     9.05%
FidelityEquity-IncomeFund-RetailPRO | Fidelity Equity-Income Fund | RS008                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 3000® Value Index                            
Average Annual Return, Percent   15.71%                     11.18%     10.46%
FidelityEquity-IncomeFund-RetailPRO | Fidelity Equity-Income Fund | RS003                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 3000® Index                            
Average Annual Return, Percent   17.15%                     13.15%     14.29%
FidelityMidCapValueK6Fund-PRO | Fidelity Mid Cap Value K6 Fund | Fidelity Mid Cap Value K6 Fund                                
Prospectus Line Items                                
Management Fees (as a percentage of Assets) 0.45%                              
Distribution and Service (12b-1) Fees 0.00%                              
Other Expenses (as a percentage of Assets): 0.00%                              
Expenses (as a percentage of Assets) 0.45%                              
Expense Example, with Redemption, 1 Year $ 46                              
Expense Example, with Redemption, 3 Years 144                              
Expense Example, with Redemption, 5 Years 252                              
Expense Example, with Redemption, 10 Years $ 567                              
Annual Return, Inception Date May 25, 2017                              
Average Annual Return, Label [Optional Text]   Fidelity® Mid Cap Value K6 Fund                            
Average Annual Return, Percent   12.58%                     13.67%   9.37% [11]  
Annual Return [Percent]     12.58% 13.79% 23.09% (10.25%) 34.12% 0.54% 23.66% (18.66%)            
FidelityMidCapValueK6Fund-PRO | Fidelity Mid Cap Value K6 Fund                                
Prospectus Line Items                                
Risk/Return [Heading] Fund Summary Fund: Fidelity® Mid Cap Value K6 Fund                              
Objective [Heading] Investment Objective                              
Objective, Primary [Text Block] Fidelity® Mid Cap Value K6 Fund seeks long-term growth of capital.                              
Expense Heading [Optional Text] Fee Table                              
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions, which are not reflected in the tables and examples below.                              
Shareholder Fees Caption [Optional Text] Shareholder fees                              
Shareholder Fee, Other $ 0                              
Operating Expenses Caption [Optional Text] Annual Operating Expenses                              
Portfolio Turnover [Heading] Portfolio Turnover                              
Portfolio Turnover [Text Block] 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 97 % of the average value of its portfolio.                              
Portfolio Turnover, Rate 97.00%                              
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                              
Strategy [Heading] Principal Investment Strategies                              
Strategy Narrative [Text Block] Normally investing at least 80% of assets in securities of value companies with medium market capitalizations. The Adviser generally defines medium market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell Midcap ® Index or the S&P MidCap 400 ® Index. Value companies are companies the Adviser believes are undervalued in the marketplace. The Adviser considers traditional and other measures of value, such as whether the company is included in a third-party value benchmark or classified as a value company by a third-party vendor, whether the company's free cash flow yield is above the equity market median, whether the company's enterprise value (the total value of a company's outstanding equity and debt) relative to earnings is below the equity market median, or whether the company's price-to-book (P/B) ratio or projected price-to-earnings (P/E) ratio is below the equity market median. An issuer may be determined to be a value company under any of these factors. Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Normally investing primarily in common stocks. Potentially investing in companies with smaller or larger market capitalizations. Investing in domestic and foreign issuers. 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.                              
Bar Chart and Performance Table [Heading] Performance                              
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance is not an indication of future performance. Visit www.401k.com and log in for more recent performance information.                              
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.                              
Performance Availability Website Address [Text] www.401k.com                              
Performance Past Does Not Indicate Future [Text] Past performance is not an indication of future performance.                              
Bar Chart [Heading] Year-by-Year Returns                              
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                              
Highest Quarterly Return, Date Dec. 31, 2020                              
Highest Quarterly Return 21.11%                              
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                              
Lowest Quarterly Return, Date Mar. 31, 2020                              
Lowest Quarterly Return (32.06%)                              
Performance Table Heading Average Annual Returns                              
FidelityMidCapValueK6Fund-PRO | Fidelity Mid Cap Value K6 Fund | RS003                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 3000® Index                            
Average Annual Return, Percent   17.15%                     13.15%   14.12%  
FidelityMidCapValueK6Fund-PRO | Fidelity Mid Cap Value K6 Fund | RS013                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell Midcap® Value Index                            
Average Annual Return, Percent   11.05%                     9.83%   8.62%  
FidelityEquity-IncomeK6Fund-PRO | Fidelity Equity-Income K6 Fund | Fidelity Equity-Income K6 Fund                                
Prospectus Line Items                                
Management Fees (as a percentage of Assets) 0.34%                              
Distribution and Service (12b-1) Fees 0.00%                              
Other Expenses (as a percentage of Assets): 0.00%                              
Expenses (as a percentage of Assets) 0.34%                              
Expense Example, with Redemption, 1 Year $ 35                              
Expense Example, with Redemption, 3 Years 109                              
Expense Example, with Redemption, 5 Years 191                              
Expense Example, with Redemption, 10 Years $ 431                              
Annual Return, Inception Date Jun. 13, 2019                              
Average Annual Return, Label [Optional Text]   Fidelity® Equity-Income K6 Fund                            
Average Annual Return, Percent   19.06%                     12.61% 12.42% [12]    
Annual Return [Percent]     19.06% 15.53% 10.80% (4.77%) 24.74% 6.84%                
FidelityEquity-IncomeK6Fund-PRO | Fidelity Equity-Income K6 Fund                                
Prospectus Line Items                                
Risk/Return [Heading] Fund Summary Fund: Fidelity® Equity-Income K6 Fund                              
Objective [Heading] Investment Objective                              
Objective, Primary [Text Block] Fidelity® Equity-Income K6 Fund seeks reasonable income. In pursuing this objective, the fund will also consider the potential for capital appreciation. The fund seeks a yield for its shareholders that exceeds the yield on the securities comprising the S&P 500 ® Index.                              
Expense Heading [Optional Text] Fee Table                              
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions, which are not reflected in the tables and examples below.                              
Shareholder Fees Caption [Optional Text] Shareholder fees                              
Shareholder Fee, Other $ 0                              
Operating Expenses Caption [Optional Text] Annual Operating Expenses                              
Portfolio Turnover [Heading] Portfolio Turnover                              
Portfolio Turnover [Text Block] 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 14 % of the average value of its portfolio.                              
Portfolio Turnover, Rate 14.00%                              
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                              
Strategy [Heading] Principal Investment Strategies                              
Strategy Narrative [Text Block] Normally investing at least 80% of assets in income-producing equity securities. Equity securities represent an ownership interest, or the right to acquire an ownership interest, in an issuer. Equity securities include common stocks (including depositary receipts evidencing ownership of common stock), preferred stocks and other preferred securities, convertible securities, rights and warrants, and other securities, such as hybrid securities and trust preferred securities, believed to have equity-like characteristics. Income-producing equity securities are equity securities that pay, or are expected to pay within the next three months, dividends or interest. Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Potentially investing in other types of equity securities and debt securities, including lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities or junk bonds). Investing in domestic and foreign issuers. 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. Potentially using covered call options as tools in managing the fund's assets. The Adviser's emphasis on income-producing equity securities tends to lead to investments in large cap "value" stocks. However, the Adviser is not constrained by any particular investment style.                              
Bar Chart and Performance Table [Heading] Performance                              
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance is not an indication of future performance. Visit www.401k.com and log in for more recent performance information.                              
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.                              
Performance Availability Website Address [Text] www.401k.com                              
Performance Past Does Not Indicate Future [Text] Past performance is not an indication of future performance.                              
Bar Chart [Heading] Year-by-Year Returns                              
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                              
Highest Quarterly Return, Date Dec. 31, 2020                              
Highest Quarterly Return 15.69%                              
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                              
Lowest Quarterly Return, Date Mar. 31, 2020                              
Lowest Quarterly Return (21.98%)                              
Performance Table Heading Average Annual Returns                              
FidelityEquity-IncomeK6Fund-PRO | Fidelity Equity-Income K6 Fund | RS008                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 3000® Value Index                            
Average Annual Return, Percent   15.71%                     11.18% 10.62%    
FidelityEquity-IncomeK6Fund-PRO | Fidelity Equity-Income K6 Fund | RS003                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 3000® Index                            
Average Annual Return, Percent   17.15%                     13.15% 15.13%    
FidelityMidCapValueFund-RetailPRO | Fidelity Mid Cap Value Fund | Fidelity Mid Cap Value Fund                                
Prospectus Line Items                                
Management Fees (as a percentage of Assets) [13] 0.82%                              
Distribution and Service (12b-1) Fees 0.00%                              
Other Expenses (as a percentage of Assets): 0.02%                              
Expenses (as a percentage of Assets) 0.84%                              
Expense Example, with Redemption, 1 Year $ 86                              
Expense Example, with Redemption, 3 Years 268                              
Expense Example, with Redemption, 5 Years 466                              
Expense Example, with Redemption, 10 Years $ 1,037                              
Average Annual Return, Label [Optional Text]   Return Before Taxes                            
Average Annual Return, Percent   13.01%                     13.70%     9.73%
Annual Return [Percent]     13.01% 14.39% 22.62% (10.54%) 34.00% 0.97% 23.59% (18.84%) 17.00% 12.39%        
FidelityMidCapValueFund-RetailPRO | Fidelity Mid Cap Value Fund                                
Prospectus Line Items                                
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity® Mid Cap Value Fund /Fidelity® Mid Cap Value Fund                              
Objective [Heading] Investment Objective                              
Objective, Primary [Text Block] Fidelity® Mid Cap Value Fund seeks long-term growth of capital.                              
Expense Heading [Optional Text] Fee Table                              
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.                              
Shareholder Fees Caption [Optional Text] Shareholder fees                              
Shareholder Fee, Other $ 0                              
Operating Expenses Caption [Optional Text] Annual Operating Expenses                              
Portfolio Turnover [Heading] Portfolio Turnover                              
Portfolio Turnover [Text Block] 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 84 % of the average value of its portfolio.                              
Portfolio Turnover, Rate 84.00%                              
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:                              
Strategy [Heading] Principal Investment Strategies                              
Strategy Narrative [Text Block] Normally investing at least 80% of assets in securities of value companies with medium market capitalizations. The Adviser generally defines medium market capitalization companies as those whose market capitalization is similar to the market capitalization of companies in the Russell Midcap ® Index or the S&P MidCap 400 ® Index. Value companies are companies the Adviser believes are undervalued in the marketplace. The Adviser considers traditional and other measures of value, such as whether the company is included in a third-party value benchmark or classified as a value company by a third-party vendor, whether the company's free cash flow yield is above the equity market median, whether the company's enterprise value (the total value of a company's outstanding equity and debt) relative to earnings is below the equity market median, or whether the company's price-to-book (P/B) ratio or projected price-to-earnings (P/E) ratio is below the equity market median. An issuer may be determined to be a value company under any of these factors. Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Normally investing primarily in common stocks. Potentially investing in companies with smaller or larger market capitalizations. Investing in domestic and foreign issuers. 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.                              
Bar Chart and Performance Table [Heading] Performance                              
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.fidelity.com for more recent performance information.                              
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.                              
Performance Availability Website Address [Text] www.fidelity.com                              
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.                              
Bar Chart [Heading] Year-by-Year Returns                              
Highest Quarterly Return, Label [Optional Text]    Highest Quarter Return                              
Highest Quarterly Return, Date Dec. 31, 2020                              
Highest Quarterly Return 21.18%                              
Lowest Quarterly Return, Label [Optional Text]    Lowest Quarter Return                              
Lowest Quarterly Return, Date Mar. 31, 2020                              
Lowest Quarterly Return (32.28%)                              
Performance Table Heading Average Annual Returns                              
Performance Table Uses Highest Federal Rate 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 The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).                              
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.                              
FidelityMidCapValueFund-RetailPRO | Fidelity Mid Cap Value Fund | After Taxes on Distributions | Fidelity Mid Cap Value Fund                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions                            
Average Annual Return, Percent   10.79%                     11.86%     8.18%
FidelityMidCapValueFund-RetailPRO | Fidelity Mid Cap Value Fund | After Taxes on Distributions and Sales | Fidelity Mid Cap Value Fund                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Return After Taxes on Distributions and Sale of Fund Shares                            
Average Annual Return, Percent   9.10%                     10.60%     7.54%
FidelityMidCapValueFund-RetailPRO | Fidelity Mid Cap Value Fund | RS003                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell 3000® Index                            
Average Annual Return, Percent   17.15%                     13.15%     14.29%
FidelityMidCapValueFund-RetailPRO | Fidelity Mid Cap Value Fund | RS013                                
Prospectus Line Items                                
Average Annual Return, Label [Optional Text]   Russell Midcap® Value Index                            
Average Annual Return, Percent   11.05%                     9.83%     9.78%
Document Type 485BPOS                              
Registrant Name Fidelity Devonshire Trust                              
[1]
A Class A and Class M purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class M purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% and 0.25%, respectively.
[2]
A The management fee comprises a basic fee, which may vary by class, that is adjusted up or down by a maximum of 0.20% based on the performance of the fund or a designated class of the fund relative to that of the Russell Midcap® Value Index. Please see "Fund Services - Fund Management - Advisory Fee(s)" for additional information.
[3]
B On Class C shares redeemed less than one year after purchase.
[4]
A From February 1, 2017 .
[5]
A Class A and Class M purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class M purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% and 0.25%, respectively.
[6]
A The management fee comprises a basic fee, which may vary by class, that is adjusted up or down by a maximum of 0.20% based on the performance of the fund or a designated class of the fund relative to that of the Russell 1000® Value Index. Please see "Fund Services - Fund Management - Advisory Fee(s)" for additional information.
[7]
B Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses. For the period, acquired fund fees and expenses are less than 0.01% and are included in other expenses .
[8]
B On Class C shares redeemed less than one year after purchase.
[9]
A From February 1, 2017 .
[10]
A The management fee comprises a basic fee, which may vary by class, that is adjusted up or down by a maximum of 0.20% based on the performance of the fund or a designated class of the fund relative to that of the Russell 1000® Value Index. Please see "Fund Services - Fund Management - Advisory Fee(s)" for additional information.
[11]
A From May 25, 2017 .
[12]
A From June 13, 2019 .
[13]
A The management fee comprises a basic fee, which may vary by class, that is adjusted up or down by a maximum of 0.20% based on the performance of the fund or a designated class of the fund relative to that of the Russell Midcap® Value Index. Please see "Fund Services - Fund Management - Advisory Fee(s)" for additional information.