Label	Element	Value
Risk Return Abstract	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	THE HARTFORD MUTUAL FUNDS II, INC.
Prospectus Date	rr_ProspectusDate	Feb. 28, 2025
Hartford Schroders Emerging Markets Equity Fund
Risk Return Abstract	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	<span style="color:#000000;font-family:Arial Narrow;font-size:20pt;font-weight:bold;">Hartford Schroders Emerging Markets Equity Fund Summary Section</span>
Objective [Heading]	rr_ObjectiveHeading	<span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">INVESTMENT OBJECTIVE. </span>
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund seeks capital appreciation.
Expense [Heading]	rr_ExpenseHeading	<span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">YOUR EXPENSES. </span>
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	The table below describes the fees and expenses that you may pay if 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 table and example below. Please contact your financial intermediary for more information regarding whether you may be required to pay a brokerage commission or other fees. 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 $50,000in certain classes of Hartford mutual funds or in The Hartford® SMART529® College Savings Plan. 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 131 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.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	<span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">Shareholder Fees</span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;"> (fees paid directly from your investment):</span>
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	<span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">Annual Fund Operating Expenses</span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;"> (expenses that you pay each year as a percentage of the value of your investment):</span>
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	<span style="color:#000000;font-family:Arial Narrow;font-size:9.5pt;">February 28, 2026</span>
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	<span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">Portfolio Turnover. </span>
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 example, affect the Fund’s performance. During the fiscal year ended October 31, 2024, the Fund’s portfolio turnover rate was 45% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	45.00%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	Investments of $1 million or more will not be subject to a front-end sales charge, but may be subject to a 1.00% contingent deferred sales charge.
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	<span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">You may qualify for </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">sales charge discounts for Class A shares if you and your family invest, or agree to invest in the future, at least $</span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">50,000</span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">in certain classes of Hartford mutual funds or in The Hartford</span><span style="color:#000000;font-family:Arial;font-size:6.5pt;position:relative;top:-2.75pt;">®</span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;"> SMART529</span><span style="color:#000000;font-family:Arial;font-size:6.5pt;position:relative;top:-2.75pt;">®</span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;"> College Savings Plan.</span>
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	<span style="color:#000000;font-family:Arial Narrow;font-size:9.5pt;">“Management fees” have been restated to reflect current fees.</span><span style="color:#000000;font-family:Arial Narrow;font-size:9.5pt;">“Other expenses” for Classes A and R5 have been restated to reflect the estimated transfer agency fees for the current fiscal year.</span>
Expense Example [Heading]	rr_ExpenseExampleHeading	<span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">Example. </span>
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The example below is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then, except as shown below, redeem all of your shares at the end of those periods. The example also assumes that:●Your investment has a 5% return each year ●The Fund’s operating expenses remain the same (except that the example reflects the fee waiver and/or expense reimbursement arrangement reflected in the table above for only the first year)●You reinvest all dividends and distributions.Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example by, Year, Caption [Text]	rr_ExpenseExampleByYearCaption	<span style="color:#000000;font-family:Arial;font-size:9pt;">If you did not redeem your shares:</span>
Strategy [Heading]	rr_StrategyHeading	<span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">PRINCIPAL INVESTMENT STRATEGY. </span>
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund normally invests at least 80% of its assets in equity securities of “emerging market” companies. The Fund’s sub-advisers, Schroder Investment Management North America Inc. (“SIMNA”) and Schroder Investment Management North America Limited (“SIMNA Ltd.,” together with SIMNA, the “Sub-Advisers”), currently consider emerging market companies to be issuers listed or domiciled in, deriving more than 50% of their revenues or profits from, or having more than 50% of their assets in emerging markets. Emerging markets are those markets (1) included in emerging market or equivalent classifications by the United Nations (and its agencies), (2) having per capita income in the low to middle ranges, as determined by the World Bank, or (3) the Fund’s benchmark index provider designates as emerging. Emerging market countries also include countries that the Fund’s Sub-Advisers consider to be emerging market countries based on their evaluation of their level of economic development or the size and experience of their securities markets. The Fund will typically seek to allocate its investments among a number of different emerging market countries. Although there is no percentage limit on investments in any one emerging market country, the Sub-Advisers will refer to the country weights of the Fund’s benchmark index along with their quantitative country allocation model as a guide when making allocation decisions. As a result of this analysis, the Fund may invest more than 25% of its assets in securities of companies located in China. Securities of companies located in China include China H-shares and China A-shares, among others. The Fund invests in countries and companies that the Sub-Advisers believe offer the potential for capital growth. The Sub-Advisers consider bottom-up and top-down factors in evaluating investment opportunities. These bottom-up factors include a company’s potential for above average earnings growth, a security’s attractive relative valuation, and whether a company has proprietary advantages. In addition, the Sub-Advisers integrate financially material environmental, social and governance (“ESG”) characteristics (where available for an issuer) into their investment process. ESG characteristics are one of several factors that contribute to the Sub-Advisers’ overall evaluation of the risk and return potential of an investment. The equity securities in which the Fund may invest include, but are not limited to, common stock, preferred stock (or units of ordinary and preference shares), and depositary receipts. The Fund may invest in companies of any size market capitalization, but tends to focus on mid to large cap companies. Based on market or economic conditions, the Fund may, through its normal stock selection process, focus in one or more sectors of the market.
Risk [Heading]	rr_RiskHeading	<span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">PRINCIPAL RISKS. </span>
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	<span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">PAST PERFORMANCE.</span>
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The performance information indicates the risks of investing in the Fund.Keep in mind that past performance (before and after taxes) does not indicate future results. Updated performance information is available at hartfordfunds.com. Effective immediately before the opening of business on October 24, 2016, the Schroder Emerging Market Equity Fund (the “Predecessor Fund”) was reorganized into the Fund. The performance information for periods prior to October 24, 2016 is that of the Predecessor Fund. The returns for the Fund in the bar chart and table:●Assume reinvestment of all dividends and distributions ●Would be different if the Fund’s fees and expenses were reflected for periods prior to October 24, 2016●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	<span style="color:#000000;font-family:Arial Narrow;font-size:10pt;"> The performance information indicates the risks of investing in the Fund.</span>
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	<span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">hartfordfunds.com</span>
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	<span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">Keep in mind that past performance (before and after taxes) does not indicate future results.</span>
Bar Chart [Heading]	rr_BarChartHeading	<span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">Total returns by calendar year (excludes sales charges)</span>
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	During the periods shown in the chart above:ReturnsQuarter EndedBest Quarter Return21.26%December 31, 2020Worst Quarter Return-23.23%March 31, 2020
Performance Table Heading	rr_PerformanceTableHeading	<span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">Average Annual Total Returns. </span>
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	<span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">After-tax returns, which are </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">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. </span>
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	<span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">Actual after-tax returns, which </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">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.</span>
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	<span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">After-tax returns, which are </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">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. </span>
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The table below shows returns for the Fund over time compared to those of a broad-based market index, which is the Fund’s performance index and regulatory 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.
Caption	rr_AverageAnnualReturnCaption	<span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">Average annual total returns for periods ending December 31, 2024 (including sales charges)</span>
Hartford Schroders Emerging Markets Equity Fund | Risk Lose Money [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	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.
Hartford Schroders Emerging Markets Equity Fund | Risk Not Insured Depository Institution [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	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.
Hartford Schroders Emerging Markets Equity Fund | Market Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	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, or as a result of other events such as geopolitical events, natural disasters, or widespread pandemics (such as COVID-19) or other adverse public health developments.
Hartford Schroders Emerging Markets Equity Fund | Foreign Investments Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	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, less stringent accounting, corporate governance, financial reporting 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.
Hartford Schroders Emerging Markets Equity Fund | Emerging Markets Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Emerging Markets Risk –  The risks related to investing in foreign securities are generally greater with respect to investments in companies that conduct their principal business activities in emerging markets or whose securities are traded principally on exchanges in emerging markets. The risks of investing in emerging markets include risks of illiquidity, increased price volatility, smaller market capitalizations, less government regulation and oversight, less extensive and less frequent accounting, financial, auditing and other reporting requirements, significant delays in settlement of trades, risk of loss resulting from problems in share registration and custody and substantial economic and political disruptions. In addition, the imposition of exchange controls (including repatriation restrictions), sanctions, confiscations, trade restrictions (including tariffs) and other government restrictions by the United States and other governments may also result in losses. Frontier markets are those emerging markets that are considered to be among the smallest, least mature and least liquid, and as a result, the risks of investing in emerging markets are magnified in frontier markets.
Hartford Schroders Emerging Markets Equity Fund | Currency Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	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.
Hartford Schroders Emerging Markets Equity Fund | Regional Country Focus Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Regional/Country Focus Risk –  To the extent that the Fund focuses its investments in a particular geographic region or country, the Fund may be subject to increased currency, political, regulatory, economic and other risks associated with that region or country. A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region. As a result, the Fund may be subject to greater price volatility and risk of loss than a fund holding more geographically diverse investments.
Hartford Schroders Emerging Markets Equity Fund | China Investments Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	China Investments Risk –  China is an emerging market and has demonstrated significantly higher volatility from time to time in comparison to developed markets. Investments in Chinese securities, including certain Hong Kong-listed and U.S.-listed securities, subject the Fund to risks specific to China. These risks include: (i) the risk of more frequent (and potentially widespread) trading suspensions and government interventions with respect to Chinese issuers, resulting in liquidity risk, price volatility, greater market execution risk, and valuation risk; (ii) the risk of currency fluctuations, currency non-convertibility, currency revaluations and other currency exchange rate fluctuations or blockage; (iii) the risk of intervention by the Chinese government in the Chinese securities markets; (iv) the risk of nationalization or expropriation of assets; (v) the risk that the Chinese government may decide not to continue to support economic reform programs; (vi) the risk of limitations on the use of brokers; (vii) the risk of interest rate fluctuations and higher rates of inflation; (viii) the risk that the U.S. government or other governments may sanction Chinese issuers or otherwise prohibit U.S. persons (such as the Fund) from investing in certain Chinese issuers; and (ix) the risk of market volatility caused by any potential regional or territorial conflicts, including military conflicts, or natural or other disasters. Recent developments in relations between the United States and China have heightened concerns of increased tariffs and restrictions on trade between the two countries. It is unclear whether further tariffs and sanctions may be imposed or other escalating actions may be taken in the future, which could negatively impact the Fund. In addition, China is alleged to have participated in state-sponsored cyberattacks against foreign companies and foreign governments. Actual and threatened responses to such activity and strained international relations, including purchasing restrictions, sanctions, tariffs or cyberattacks on the Chinese government or Chinese companies, may impact China’s economy and Chinese issuers of securities in which the Fund invests. As a result of different legal standards, the Fund faces the risk of being unable to enforce its rights with respect to holdings in Chinese securities and the information about the Chinese securities in which the Fund invests may be less reliable or complete. Chinese companies with securities listed on U.S. exchanges may be delisted if they do not meet U.S. accounting standards and auditor oversight requirements, which could significantly decrease the liquidity and value of the securities.
Hartford Schroders Emerging Markets Equity Fund | Equity Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	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.
Hartford Schroders Emerging Markets Equity Fund | Mid Cap Securities Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Mid-Cap Securities Risk –  The securities of mid-capitalization companies generally trade in lower volumes and are generally subject to greater and less predictable price changes than the securities of larger capitalization companies.
Hartford Schroders Emerging Markets Equity Fund | Large Cap Securities Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Large Cap Securities Risk –  The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.
Hartford Schroders Emerging Markets Equity Fund | Depositary Receipts Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Depositary Receipts Risk –  The Fund may invest in securities of foreign issuers in the form of depositary receipts or other securities that are convertible into securities of foreign issuers, including depositary receipts that are not sponsored by a financial institution (“Unsponsored Depositary Receipts”). Depositary receipts are generally subject to the same risks as the foreign securities that they evidence or into which they may be converted. Unsponsored Depositary Receipts are also subject to the risk that there may be less information available regarding their issuers and there may not be a correlation between such information and the market value of the depositary receipts.
Hartford Schroders Emerging Markets Equity Fund | Liquidity Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Liquidity Risk –  The risk that the market for a particular investment or type of investment is or becomes relatively illiquid, making it difficult for the Fund to sell that investment at an advantageous time or price. Illiquidity may be due to events relating to the issuer of the securities, market events, rising interest rates, economic conditions or investor perceptions. Illiquid securities may be difficult to value and their value may be lower than the market price of comparable liquid securities, which would negatively affect the Fund’s performance.
Hartford Schroders Emerging Markets Equity Fund | Active Investment Management Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Active Investment Management Risk –  The risk that, if the Sub-Advisers’ investment strategy does not perform as expected, the Fund could underperform its peers or lose money. Although the Sub-Advisers consider several factors when making investment decisions, the Sub-Advisers may not evaluate every factor prior to investing in a company or issuer, and the Sub-Advisers may determine that certain factors are more significant than others.
Hartford Schroders Emerging Markets Equity Fund | Large Shareholder Transaction Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	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.
Hartford Schroders Emerging Markets Equity Fund | Volatility Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	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.
Hartford Schroders Emerging Markets Equity Fund | ESG Integration Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	ESG Integration Risk –  Integrating financially material ESG analysis into the investment process carries the risk that the Fund may perform differently from funds that do not integrate ESG into their analysis, or funds that evaluate different ESG characteristics. ESG characteristics are one of several factors that may be considered and as a result, the Fund’s investments may not have favorable ESG characteristics or high ESG ratings.
Hartford Schroders Emerging Markets Equity Fund | Sector Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Sector Risk –  To the extent the Fund invests more heavily in a particular sector or sectors, its performance will be especially sensitive to developments that significantly affect those sectors. Individual sectors may be more volatile, and may perform differently, from the broader market.
Hartford Schroders Emerging Markets Equity Fund | Class A
Risk Return Abstract	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_MaximumDeferredSalesChargeOverOther	none	[1]
Management fees	rr_ManagementFeesOverAssets	0.91%	[2]
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.30%	[3]
Total annual fund operating expenses	rr_ExpensesOverAssets	1.46%
Fee waiver and/or expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	0.05%	[4]
Total annual fund operating expenses after fee waiver and/or expense reimbursement	rr_NetExpensesOverAssets	1.41%	[4]
Year 1	rr_ExpenseExampleYear01	$ 686
Year 3	rr_ExpenseExampleYear03	982
Year 5	rr_ExpenseExampleYear05	1,299
Year 10	rr_ExpenseExampleYear10	$ 2,196
2015	rr_AnnualReturn2015	(12.94%)
2016	rr_AnnualReturn2016	10.22%
2017	rr_AnnualReturn2017	40.54%
2018	rr_AnnualReturn2018	(15.77%)
2019	rr_AnnualReturn2019	21.84%
2020	rr_AnnualReturn2020	23.23%
2021	rr_AnnualReturn2021	(5.37%)
2022	rr_AnnualReturn2022	(22.54%)
2023	rr_AnnualReturn2023	8.60%
2024	rr_AnnualReturn2024	7.37%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	<span style="color:#000000;font-family:Arial;font-size:9pt;font-weight:bold;margin-left:0.0pt;">Best Quarter Return</span>
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2020
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	21.26%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	<span style="color:#000000;font-family:Arial;font-size:9pt;font-weight:bold;margin-left:0.0pt;">Worst Quarter Return</span>
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Mar. 31, 2020
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(23.23%)
Hartford Schroders Emerging Markets Equity Fund | Class C
Risk Return Abstract	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_MaximumDeferredSalesChargeOverOther	1.00%
Management fees	rr_ManagementFeesOverAssets	0.91%	[2]
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.14%	[3]
Total annual fund operating expenses	rr_ExpensesOverAssets	2.05%
Fee waiver and/or expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[4]
Total annual fund operating expenses after fee waiver and/or expense reimbursement	rr_NetExpensesOverAssets	2.05%	[4]
Year 1	rr_ExpenseExampleYear01	$ 308
Year 3	rr_ExpenseExampleYear03	643
Year 5	rr_ExpenseExampleYear05	1,103
Year 10	rr_ExpenseExampleYear10	2,379
Year 1	rr_ExpenseExampleNoRedemptionYear01	208
Year 3	rr_ExpenseExampleNoRedemptionYear03	643
Year 5	rr_ExpenseExampleNoRedemptionYear05	1,103
Year 10	rr_ExpenseExampleNoRedemptionYear10	$ 2,379
Hartford Schroders Emerging Markets Equity Fund | Class I
Risk Return Abstract	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_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.91%	[2]
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.22%	[3]
Total annual fund operating expenses	rr_ExpensesOverAssets	1.13%
Fee waiver and/or expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[4]
Total annual fund operating expenses after fee waiver and/or expense reimbursement	rr_NetExpensesOverAssets	1.13%	[4]
Year 1	rr_ExpenseExampleYear01	$ 115
Year 3	rr_ExpenseExampleYear03	359
Year 5	rr_ExpenseExampleYear05	622
Year 10	rr_ExpenseExampleYear10	$ 1,375
Hartford Schroders Emerging Markets Equity Fund | Class R3
Risk Return Abstract	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_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.91%	[2]
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other expenses	rr_OtherExpensesOverAssets	0.27%	[3]
Total annual fund operating expenses	rr_ExpensesOverAssets	1.68%
Fee waiver and/or expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[4]
Total annual fund operating expenses after fee waiver and/or expense reimbursement	rr_NetExpensesOverAssets	1.68%	[4]
Year 1	rr_ExpenseExampleYear01	$ 171
Year 3	rr_ExpenseExampleYear03	530
Year 5	rr_ExpenseExampleYear05	913
Year 10	rr_ExpenseExampleYear10	$ 1,987
Hartford Schroders Emerging Markets Equity Fund | Class R4
Risk Return Abstract	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_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.91%	[2]
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.20%	[3]
Total annual fund operating expenses	rr_ExpensesOverAssets	1.36%
Fee waiver and/or expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[4]
Total annual fund operating expenses after fee waiver and/or expense reimbursement	rr_NetExpensesOverAssets	1.36%	[4]
Year 1	rr_ExpenseExampleYear01	$ 138
Year 3	rr_ExpenseExampleYear03	431
Year 5	rr_ExpenseExampleYear05	745
Year 10	rr_ExpenseExampleYear10	$ 1,635
Hartford Schroders Emerging Markets Equity Fund | Class R5
Risk Return Abstract	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_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.91%	[2]
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.17%	[3]
Total annual fund operating expenses	rr_ExpensesOverAssets	1.08%
Fee waiver and/or expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[4]
Total annual fund operating expenses after fee waiver and/or expense reimbursement	rr_NetExpensesOverAssets	1.08%	[4]
Year 1	rr_ExpenseExampleYear01	$ 110
Year 3	rr_ExpenseExampleYear03	343
Year 5	rr_ExpenseExampleYear05	595
Year 10	rr_ExpenseExampleYear10	$ 1,317
Hartford Schroders Emerging Markets Equity Fund | Class Y
Risk Return Abstract	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_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.91%	[2]
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.16%	[3]
Total annual fund operating expenses	rr_ExpensesOverAssets	1.07%
Fee waiver and/or expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[4]
Total annual fund operating expenses after fee waiver and/or expense reimbursement	rr_NetExpensesOverAssets	1.07%	[4]
Year 1	rr_ExpenseExampleYear01	$ 109
Year 3	rr_ExpenseExampleYear03	340
Year 5	rr_ExpenseExampleYear05	590
Year 10	rr_ExpenseExampleYear10	$ 1,306
Hartford Schroders Emerging Markets Equity Fund | Class F
Risk Return Abstract	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_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.91%	[2]
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.05%	[3]
Total annual fund operating expenses	rr_ExpensesOverAssets	0.96%
Fee waiver and/or expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[4]
Total annual fund operating expenses after fee waiver and/or expense reimbursement	rr_NetExpensesOverAssets	0.96%	[4]
Year 1	rr_ExpenseExampleYear01	$ 98
Year 3	rr_ExpenseExampleYear03	306
Year 5	rr_ExpenseExampleYear05	531
Year 10	rr_ExpenseExampleYear10	$ 1,178
Hartford Schroders Emerging Markets Equity Fund | Class SDR
Risk Return Abstract	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_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.91%	[2]
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.05%	[3]
Total annual fund operating expenses	rr_ExpensesOverAssets	0.96%
Fee waiver and/or expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[4]
Total annual fund operating expenses after fee waiver and/or expense reimbursement	rr_NetExpensesOverAssets	0.96%	[4]
Year 1	rr_ExpenseExampleYear01	$ 98
Year 3	rr_ExpenseExampleYear03	306
Year 5	rr_ExpenseExampleYear05	531
Year 10	rr_ExpenseExampleYear10	$ 1,178
Hartford Schroders Emerging Markets Equity Fund | After Taxes on Distributions | Class A
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	1.56%
5 Years	rr_AverageAnnualReturnYear05	(0.08%)
10 Years	rr_AverageAnnualReturnYear10	3.25%
Hartford Schroders Emerging Markets Equity Fund | Return Before Taxes | Class A
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	1.48%
5 Years	rr_AverageAnnualReturnYear05	(0.10%)
10 Years	rr_AverageAnnualReturnYear10	3.26%
Hartford Schroders Emerging Markets Equity Fund | Return Before Taxes | Class C
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	5.61%	[5]
5 Years	rr_AverageAnnualReturnYear05	0.39%	[5]
10 Years	rr_AverageAnnualReturnYear10	3.32%	[5]
Hartford Schroders Emerging Markets Equity Fund | Return Before Taxes | Class I
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.56%
5 Years	rr_AverageAnnualReturnYear05	1.29%
10 Years	rr_AverageAnnualReturnYear10	4.09%
Hartford Schroders Emerging Markets Equity Fund | Return Before Taxes | Class R3
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.12%	[5]
5 Years	rr_AverageAnnualReturnYear05	0.84%	[5]
10 Years	rr_AverageAnnualReturnYear10	3.73%	[5]
Hartford Schroders Emerging Markets Equity Fund | Return Before Taxes | Class R4
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.35%	[5]
5 Years	rr_AverageAnnualReturnYear05	1.10%	[5]
10 Years	rr_AverageAnnualReturnYear10	3.95%	[5]
Hartford Schroders Emerging Markets Equity Fund | Return Before Taxes | Class R5
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.70%	[5]
5 Years	rr_AverageAnnualReturnYear05	1.35%	[5]
10 Years	rr_AverageAnnualReturnYear10	4.13%	[5]
Hartford Schroders Emerging Markets Equity Fund | Return Before Taxes | Class Y
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.68%	[5]
5 Years	rr_AverageAnnualReturnYear05	1.37%	[5]
10 Years	rr_AverageAnnualReturnYear10	4.18%	[5]
Hartford Schroders Emerging Markets Equity Fund | Return Before Taxes | Class F
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.75%	[6]
5 Years	rr_AverageAnnualReturnYear05	1.48%	[6]
10 Years	rr_AverageAnnualReturnYear10	4.23%	[6]
Hartford Schroders Emerging Markets Equity Fund | Return Before Taxes | Class SDR
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.80%
5 Years	rr_AverageAnnualReturnYear05	1.49%
10 Years	rr_AverageAnnualReturnYear10	4.27%
Hartford Schroders Emerging Markets Equity Fund | After Taxes on Distributions and Sale of Fund Shares | Class A
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	1.36%
5 Years	rr_AverageAnnualReturnYear05	0.16%
10 Years	rr_AverageAnnualReturnYear10	2.78%
Hartford Schroders Emerging Markets Equity Fund | MSCI Emerging Markets Index (Net) (reflects reinvested dividends net of withholding taxes but reflects no deduction for fees, expenses or other taxes)
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.50%
5 Years	rr_AverageAnnualReturnYear05	1.70%
10 Years	rr_AverageAnnualReturnYear10	3.64%

[1] Investments of $1 million or more will not be subject to a front-end sales charge, but may be subject to a 1.00% contingent deferred sales charge.

[2] “Management fees” have been restated to reflect current fees.

[3] “Other expenses” for Classes A and R5 have been restated to reflect the estimated transfer agency fees for the current fiscal year.

[4] Hartford Administrative Services Company (“HASCO”), the Fund’s transfer agent, has contractually agreed to waive its transfer agency fee and/or reimburse transfer agency-related expenses to the extent necessary to limit the transfer agency fee for Class A as follows: 0.200%. This contractual arrangement will remain in effect until February 28, 2026 unless the Board of Directors of The Hartford Mutual Funds II, Inc. approves its earlier termination.

[5] Class C, Class R3, Class R4, Class R5, and Class Y shares commenced operations on October 24, 2016 and performance prior to this date reflects the performance of the Predecessor Fund’s Investor Shares. Prior to October 24, 2016, Class I was called Investor Shares.

[6] Class F shares commenced operations on February 28, 2017 and performance prior to that date is that of the Fund’s Class I shares. Performance prior to Class F’s inception date has not been adjusted to reflect the operating expenses of Class F.