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Label Element Value
HARTFORD SMALL CAP VALUE FUND  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading HARTFORD SMALL CAP VALUE FUND
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE.
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund seeks long-term capital appreciation.
Expense [Heading] rr_ExpenseHeading Your Expenses.
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts for Class A shares if you and your family invest, or agree to invest in the future, at least $50,000 in certain classes of Hartford mutual funds or 529 plans administered by Hartford Funds Management Company, LLC. More information about these and other discounts is available from your financial professional and in the “How Sales Charges Are Calculated” section beginning on page 90 of the Fund’s statutory prospectus. Descriptions of any financial intermediary specific sales charge waivers and discounts are set forth in Appendix A to the statutory prospectus. In addition, the table and examples below do not reflect any transaction fees that may be charged by financial intermediaries or commissions that a shareholder may be required to pay directly to its financial intermediary when buying or selling Class I, Class R6, Class Y, or Class F shares. Please contact your financial intermediary for more information regarding whether you may be required to pay a transaction fee or a commission.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover.
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the examples, affect the Fund’s performance. During the fiscal year ended October 31, 2019, the Fund’s portfolio turnover rate was 140% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 140.00%
Expense Example [Heading] rr_ExpenseExampleHeading Example.
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The examples below are intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The examples assume that:

You invest $10,000

Your investment has a 5% return each year

The Fund’s operating expenses remain the same (except that the examples reflect the expense limitation arrangements for only the first year)

You reinvest all dividends and distributions

You pay any deferred sales charge due for the applicable period.

Your actual costs may be higher or lower. Based on these assumptions, you would pay the following expenses if you sell all of your shares at the end of each time period indicated:
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption You would pay the following expenses if you did not redeem your shares:
Strategy [Heading] rr_StrategyHeading PRINCIPAL INVESTMENT STRATEGY.
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
  Under normal circumstances, the Fund invests at least 80% of its assets in common stocks of small capitalization companies. The Fund may invest up to 15% of its net assets in securities of foreign issuers and non-dollar securities. The Fund’s sub-adviser, Wellington Management Company LLP (“Wellington Management”), primarily invests in securities it believes are undervalued in the marketplace. Wellington Management uses fundamental analysis to evaluate a security for purchase or sale by the Fund. Based on market or economic conditions, the Fund may, through its normal bottom-up stock selection process, focus in one or more sectors of the market.

The Fund defines small capitalization companies as companies with a market capitalization within the range of the Russell 2000 Index. As of December 31, 2019, the market capitalization of companies included in the Russell 2000 Index ranged from approximately $13 million to $8.34 billion. The market capitalization range of this index changes over time.
Risk [Heading] rr_RiskHeading PRINCIPAL RISKS.
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
The principal risks of investing in the Fund are described below. When you sell your shares they may be worth more or less than what you paid for them, which means that you could lose money as a result of your investment. An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Market Risk −Market risk is the risk that one or more markets in which the Fund invests will go down in value, including the possibility that the markets will go down sharply and unpredictably. Securities of a company may decline in value due to its financial prospects and activities, including certain operational impacts, such as data breaches and cybersecurity attacks. Securities may also decline in value due to general market and economic movements and trends, including adverse changes to credit markets.

Equity Risk −The risk that the price of equity or equity related securities may decline due to changes in a company's financial condition and overall market and economic conditions.

Small Cap Securities Risk −Investments in small capitalization companies involve greater risks than investments in larger, more established companies. Many of these companies are young and have limited operating or business history. These securities may be subject to more abrupt or erratic price movements and may lack sufficient market liquidity, and these issuers often face greater business risks, including the risk of bankruptcy.

Active Investment Management Risk −The risk that, if the sub-adviser’s investment strategy does not perform as expected, the Fund could underperform its peers or lose money.

Value Investing Style Risk −Using a value investing style to select investments involves special risks, particularly if it is used as part of a “contrarian” approach to evaluating issuers. Overlooked or otherwise undervalued securities entail a significant risk of never attaining their potential value. Also, the value investing style may over time go in and out of favor. At times when the value investing style is out of favor, the Fund may underperform other equity funds that use different investing styles.

Volatility Risk −The Fund's investments may fluctuate in value over a short period of time. This may cause the Fund’s net asset value per share to experience significant changes in value over short periods of time.

Sector Risk −To the extent the Fund invests more heavily in particular sectors, its performance will be especially sensitive to developments that significantly affect those sectors. Individual sectors may be more volatile, and may perform differently, than the broader market.

Foreign Investments Risk −Investments in foreign securities may be riskier, more volatile, and less liquid than investments in U.S. securities. Differences between the U.S. and foreign regulatory regimes and securities markets, including the less stringent investor protection and disclosure standards of some foreign markets, as well as political and economic developments in foreign countries and regions and the U.S. (including the imposition of sanctions, tariffs, or other governmental restrictions), may affect the value of the Fund’s investments in foreign securities. Changes in currency exchange rates may also adversely affect the Fund’s foreign investments. The impact of the United Kingdom’s departure from the European Union, commonly known as “Brexit,” and the potential departure of one or more other countries from the European Union may have significant political and financial consequences for global markets. This may adversely impact Fund performance.

Currency Risk −The risk that the value of the Fund’s investments in foreign securities or currencies will be affected by the value of the applicable currency relative to the U.S. dollar. When the Fund sells a foreign currency or foreign currency denominated security, its value may be worth less in U.S. dollars even if the investment increases in value in its local market. U.S. dollar-denominated securities of foreign issuers may also be affected by currency risk, as the revenue earned by issuers of these securities may also be affected by changes in the issuer’s local currency.

Securities Lending Risk −The Fund may engage in securities lending. The Fund may lose money because the borrower of the loaned securities fails to return the securities in a timely manner or at all. The Fund could also lose money in the event of a decline in the value of the collateral provided for loaned securities or a decline in the value of any investments made with cash collateral. These events could also trigger adverse tax consequences for the Fund.

Large Shareholder Transaction Risk −The Fund may experience adverse effects when certain large shareholders redeem or purchase large amounts of shares of the Fund. Such redemptions may cause the Fund to sell securities at times when it would not otherwise do so or borrow money (at a cost to the Fund), which may negatively impact the Fund's performance and liquidity. Similarly, large purchases may adversely affect the Fund’s performance to the extent that the Fund is delayed in investing new cash and is required to maintain a larger cash position than it ordinarily would. These transactions may also accelerate the realization of taxable income to shareholders if such sales of investments resulted in gains, and may also increase transaction costs.

The Fund is subject to certain other risks. For more information regarding risks and investments, please see “Additional Information Regarding Investment Strategies and Risks” and "More Information About Risks" in the Fund’s statutory prospectus.
Risk Lose Money [Text] rr_RiskLoseMoney When you sell your shares they may be worth more or less than what you paid for them, which means that you could lose money as a result of your investment.
RIsk Not Insured [Text] rr_RiskNotInsured An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PAST PERFORMANCE.
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The performance information indicates the risks of investing in the Fund. Keep in mind that past performance does not indicate future results. Updated performance information is available at hartfordfunds.com. The returns in the bar chart and table:

Assume reinvestment of all dividends and distributions

Include the Fund’s performance when it had a different sub-adviser prior to June 4, 2012

Include the Fund’s performance when it pursued different strategies prior to November 1, 2018

Reflect fee waivers and/or expense limitation arrangements, if any. Absent any applicable fee waivers and/or expense limitation arrangements, performance would have been lower.

The bar chart:

Shows how the Fund’s total return has varied from year to year

Returns do not include sales charges. If sales charges were reflected, returns would have been lower

Shows the returns of Class A shares. Returns for the Fund’s other classes differ only to the extent that the classes do not have the same expenses.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns  The performance information indicates the risks of investing in the Fund.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress hartfordfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Keep in mind that past performance does not indicate future results
Bar Chart [Heading] rr_BarChartHeading Total returns by calendar year (excludes sales charges)
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads Returns do not include sales charges. If sales charges were reflected, returns would have been lower
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest/Lowest quarterly results during the periods shown in the bar chart were:

Highest 14.58% (4th quarter, 2010)   Lowest -19.44% (3rd quarter, 2011)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2010
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 14.58%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (19.44%)
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns.
Performance Table Does Reflect Sales Loads rr_PerformanceTableDoesReflectSalesLoads (including sales charges)
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses or taxes)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns, which are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes, are shown only for Class A shares and will vary for other classes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Actual after-tax returns, which depend on an investor’s particular tax situation, may differ from those shown and are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns, which are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes, are shown only for Class A shares and will vary for other classes.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock
The table below shows returns for the Fund over time compared to those of a broad-based market index. After-tax returns, which are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes, are shown only for Class A shares and will vary for other classes. Actual after-tax returns, which depend on an investor’s particular tax situation, may differ from those shown and are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. For more information regarding returns, see the "Performance Notes" section in the Fund's statutory prospectus.
Average Annual Return, Caption rr_AverageAnnualReturnCaption Average annual total returns for periods ending December 31, 2019 (including sales charges)
HARTFORD SMALL CAP VALUE FUND | Russell 2000 Value Index (reflects no deduction for fees, expenses or taxes)  
Risk/Return: rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel Russell 2000 Value Index (reflects no deduction for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 22.39%
5 Years rr_AverageAnnualReturnYear05 6.99%
10 Years rr_AverageAnnualReturnYear10 10.56%
HARTFORD SMALL CAP VALUE FUND | Class A  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.50%
Maximum deferred sales charge (load) (as a percentage of purchase price or redemption proceeds, whichever is less) rr_MaximumDeferredSalesChargeOverOfferingPrice none [1]
Management fees rr_ManagementFeesOverAssets 0.70%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_Component2OtherExpensesOverAssets 0.42% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 1.37%
Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets 0.07% [3]
Total annual fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.30% [3]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination Feb. 28, 2021
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock For investments over $1 million, a 1.00% maximum deferred sales charge may apply.
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts for Class A shares if you and your family invest, or agree to invest in the future, at least $50,000 in certain classes of Hartford mutual funds or 529 plans administered by Hartford Funds Management Company, LLC.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 675
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 953
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,252
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,100
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 675
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 953
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,252
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,100
Annual Return 2010 rr_AnnualReturn2010 24.13%
Annual Return 2011 rr_AnnualReturn2011 (1.46%)
Annual Return 2012 rr_AnnualReturn2012 15.74%
Annual Return 2013 rr_AnnualReturn2013 35.94%
Annual Return 2014 rr_AnnualReturn2014 4.75%
Annual Return 2015 rr_AnnualReturn2015 (6.36%)
Annual Return 2016 rr_AnnualReturn2016 17.79%
Annual Return 2017 rr_AnnualReturn2017 9.42%
Annual Return 2018 rr_AnnualReturn2018 (10.46%)
Annual Return 2019 rr_AnnualReturn2019 20.65%
Label rr_AverageAnnualReturnLabel Class A - Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 14.02%
5 Years rr_AverageAnnualReturnYear05 4.26%
10 Years rr_AverageAnnualReturnYear10 9.52%
HARTFORD SMALL CAP VALUE FUND | Class A | After Taxes on Distributions  
Risk/Return: rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel Class A - After Taxes on Distributions
1 Year rr_AverageAnnualReturnYear01 12.32%
5 Years rr_AverageAnnualReturnYear05 1.97%
10 Years rr_AverageAnnualReturnYear10 7.56%
HARTFORD SMALL CAP VALUE FUND | Class A | After Taxes on Distributions and Sale of Fund Shares  
Risk/Return: rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel Class A - After Taxes on Distributions and Sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 9.47%
5 Years rr_AverageAnnualReturnYear05 3.00%
10 Years rr_AverageAnnualReturnYear10 7.43%
HARTFORD SMALL CAP VALUE FUND | Class C  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of purchase price or redemption proceeds, whichever is less) rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00%
Management fees rr_ManagementFeesOverAssets 0.70%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_Component2OtherExpensesOverAssets 0.44% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 2.14%
Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets 0.09% [3]
Total annual fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 2.05% [3]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination Feb. 28, 2021
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 308
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 661
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,141
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,465
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 208
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 661
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,141
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,465
Label rr_AverageAnnualReturnLabel Class C - Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 18.71%
5 Years rr_AverageAnnualReturnYear05 4.67%
10 Years rr_AverageAnnualReturnYear10 9.33%
HARTFORD SMALL CAP VALUE FUND | Class I  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of purchase price or redemption proceeds, whichever is less) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.70%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_Component2OtherExpensesOverAssets 0.30% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 1.00%
Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets none [3]
Total annual fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.00% [3]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination Feb. 28, 2021
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 102
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 318
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 552
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,225
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 102
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 318
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 552
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,225
Label rr_AverageAnnualReturnLabel Class I - Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 20.98% [4]
5 Years rr_AverageAnnualReturnYear05 5.76% [4]
10 Years rr_AverageAnnualReturnYear10 10.31% [4]
HARTFORD SMALL CAP VALUE FUND | Class R3  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of purchase price or redemption proceeds, whichever is less) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.70%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other expenses rr_Component2OtherExpensesOverAssets 0.42% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 1.62%
Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets 0.12% [3]
Total annual fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.50% [3]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination Feb. 28, 2021
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 153
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 499
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 870
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,912
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 153
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 499
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 870
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,912
Label rr_AverageAnnualReturnLabel Class R3 - Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 20.39% [4]
5 Years rr_AverageAnnualReturnYear05 5.25% [4]
10 Years rr_AverageAnnualReturnYear10 10.06% [4]
HARTFORD SMALL CAP VALUE FUND | Class R4  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of purchase price or redemption proceeds, whichever is less) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.70%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_Component2OtherExpensesOverAssets 0.36% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 1.31%
Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets 0.11% [3]
Total annual fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.20% [3]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination Feb. 28, 2021
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 122
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 404
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 708
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,569
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 122
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 404
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 708
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,569
Label rr_AverageAnnualReturnLabel Class R4 - Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 20.62% [4]
5 Years rr_AverageAnnualReturnYear05 5.52% [4]
10 Years rr_AverageAnnualReturnYear10 10.30% [4]
HARTFORD SMALL CAP VALUE FUND | Class R5  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of purchase price or redemption proceeds, whichever is less) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.70%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_Component2OtherExpensesOverAssets 0.31% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 1.01%
Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets 0.11% [3]
Total annual fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.90% [3]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination Feb. 28, 2021
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 92
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 311
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 547
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,226
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 92
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 311
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 547
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,226
Label rr_AverageAnnualReturnLabel Class R5 - Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 20.97% [4]
5 Years rr_AverageAnnualReturnYear05 5.84% [4]
10 Years rr_AverageAnnualReturnYear10 10.58% [4]
HARTFORD SMALL CAP VALUE FUND | Class R6  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of purchase price or redemption proceeds, whichever is less) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.70%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_Component2OtherExpensesOverAssets 0.19% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 0.89%
Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets 0.09% [3]
Total annual fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.80% [3]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination Feb. 28, 2021
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 82
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 275
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 484
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,088
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 82
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 275
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 484
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,088
Label rr_AverageAnnualReturnLabel Class R6 - Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 21.16% [4]
5 Years rr_AverageAnnualReturnYear05 5.93% [4]
10 Years rr_AverageAnnualReturnYear10 10.63% [4]
HARTFORD SMALL CAP VALUE FUND | Class Y  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of purchase price or redemption proceeds, whichever is less) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.70%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_Component2OtherExpensesOverAssets 0.30% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 1.00%
Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets 0.15% [3]
Total annual fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.85% [3]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination Feb. 28, 2021
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent "Other expenses" for Class Y have been restated to reflect the estimated transfer agency fees for the current year.
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 87
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 303
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 538
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,211
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 87
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 303
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 538
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,211
Label rr_AverageAnnualReturnLabel Class Y - Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 21.19%
5 Years rr_AverageAnnualReturnYear05 5.92%
10 Years rr_AverageAnnualReturnYear10 10.63%
HARTFORD SMALL CAP VALUE FUND | Class F  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of purchase price or redemption proceeds, whichever is less) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.70%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_Component2OtherExpensesOverAssets 0.19% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 0.89%
Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets 0.09% [3]
Total annual fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.80% [3]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination Feb. 28, 2021
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 82
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 275
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 484
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,088
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 82
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 275
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 484
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,088
Label rr_AverageAnnualReturnLabel Class F - Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 21.23% [4]
5 Years rr_AverageAnnualReturnYear05 5.84% [4]
10 Years rr_AverageAnnualReturnYear10 10.35% [4]
[1] For investments over $1 million, a 1.00% maximum deferred sales charge may apply.
[2] "Other expenses" for Class Y have been restated to reflect the estimated transfer agency fees for the current year.
[3] Hartford Funds Management Company, LLC (the "Investment Manager") has contractually agreed to reimburse expenses (exclusive of taxes, interest expenses, brokerage commissions, acquired fund fees and expenses and extraordinary expenses) to the extent necessary to limit total annual fund operating expenses as follows: 1.30% (Class A), 2.05% (Class C), 1.00% (Class I), 1.50% (Class R3), 1.20% (Class R4), 0.90% (Class R5), 0.80% (Class R6), 0.85% (Class Y) and 0.80% (Class F). This contractual arrangement will remain in effect until February 28, 2021 unless the Board of Directors of The Hartford Mutual Funds, Inc. approves its earlier termination.
[4] Class I shares commenced operations on March 31, 2015 and performance prior to that date is that of the Fund's Class A shares (excluding sales charges). Class R3, Class R4 and Class R5 shares commenced operations on September 30, 2011 and performance prior to that date is that of the Fund's Class Y shares. Class R6 shares commenced operations on February 28, 2018 and performance prior to that date is that of the Fund's Class Y shares. Class F shares commenced operations on February 28, 2017. Performance for Class F shares prior to February 28, 2017 reflects the performance of Class I shares from March 31, 2015 through February 27, 2017 and Class A shares (excluding sales charges) prior to March 31, 2015. Performance prior to an inception date of a class has not been adjusted to reflect the operating expenses of such class. If the performance were adjusted, it may have been higher or lower.